JP2005109824A - Electronic photographing apparatus, vibration possibility warning method and program - Google Patents

Abstract

An object of the present invention is to issue a warning to the effect that vibration may occur before photographing.
In a digital camera as an electronic photographing apparatus, photographing conditions in which camera shake has previously occurred are stored in a photographing condition table in a storage means, and photographing of the photographing condition table stored in the storing means is performed at the time of photographing. It is determined whether or not there is a condition that matches the current shooting condition, and if there is a matching shooting condition, a hand shake possibility warning indicating that a camera shake may occur is notified before shooting. Is displayed on the liquid crystal display unit 12.
[Selection] Figure 1

Description

  The present invention relates to an electronic photographing apparatus, a vibration possibility warning method, and a program.

2. Description of the Related Art Conventionally, an electronic imaging apparatus that has a camera shake detection function and displays a warning when camera shake is detected is known (see, for example, Patent Document 1). This electronic photographing apparatus has a camera shake detection function, displays a warning when a camera shake is detected, and can select whether or not to save the photographed image.
Therefore, since an image with camera shake can be re-taken without being saved, only a high-quality image can be recorded.

  This hand shake detection and warning is uniform and warns in the same way no matter who shoots. However, each person has their own way of shooting, and if you are shooting in ways that are always blurry, it is preferable to be able to avoid that blurring by notifying you of this fact and consciously shooting next time.

  Thus, a technique is known in which a camera processor learns the blurring state and corrects camera shake (see, for example, Patent Document 2). In this technique, the learning processor receives both the acceleration sensor that detects acceleration and image movement due to camera shake, and the shake data from the CCD, and selects the input variable that minimizes the error component between these shake data. Then, shake correction data for canceling the shake is calculated. Based on the shake correction data, the actuator drives the shake correction lens so as to cancel the camera shake.

In addition, by configuring the camera to identify hand shake based on the experience of the operator as a teacher signal, it is possible to determine whether the vibration generated in the camera is due to hand shake when using after learning. It has been considered that it is possible to appropriately identify whether it is caused by a typical operation (see Patent Document 3).
JP-A-10-174027 Japanese Patent Laid-Open No. 7-20547 JP-A-6-67272

  However, even in the above prior art, there is a problem that it is not possible to issue a warning that vibration such as camera shake may occur based on a user-specific camera shake situation.

  The present invention has been made in view of the above circumstances, and an object thereof is to provide a warning that vibrations may occur.

In order to solve the above-described problems, an invention according to claim 1 is an electronic photographing apparatus comprising: an imaging unit that images a subject; and a storage unit that stores image data captured by the imaging unit.
Shooting condition acquisition means for acquiring current shooting conditions;
Photographing condition table storage means for storing a photographing condition table having photographing conditions corresponding to image data in which blurring has been taken before;
An informing means for informing a warning;
At the time of shooting, it is determined whether there is a shooting condition in the shooting condition table that matches the current shooting condition acquired by the shooting condition acquisition unit. Control means to warn by,
It is characterized by providing.

  According to the present invention, at the time of shooting, the user can be alerted to blurring with reference to previous shooting conditions, so that the possibility of shooting a blurred image can be reduced. .

According to a second aspect of the present invention, in the electronic photographing apparatus according to the first aspect,
An operation means for accepting an operation input is provided,
When erasing image data stored in the storage unit, the control unit selects image data to be erased based on an operation input from the operation unit when a blur erasure mode is selected and input by the operation unit. It is erased from the storage means, and photographing conditions corresponding to the image data to be erased are stored in the photographing condition table.

According to a third aspect of the present invention, in the electronic photographing apparatus according to the second aspect,
Equipped with a blur detection means for detecting a blur of a predetermined level or more during shooting,
The control unit causes the notification unit to notify a blur warning indicating the occurrence of a blur when the blur detection unit detects a blur.

According to a fourth aspect of the present invention, in the electronic photographing apparatus according to the third aspect,
The control means, when erasing image data in which blur is detected by the vibration detection means at the time of photographing, from the storage means, when the blur elimination mode is selected and input by the operation means, the operation input from the operation means The image data to be erased is erased from the storage means based on the above, and the photographing conditions to be erased are stored in the photographing condition table.

According to a fifth aspect of the present invention, there is provided an electronic photographing apparatus including: an imaging unit that images a subject; and a storage unit that stores image data captured by the imaging unit.
The storage means stores a shooting condition table having shooting conditions corresponding to image data in which vibrations that have been previously captured have occurred,
Shooting condition acquisition means for acquiring current shooting conditions;
An operation means for receiving an operation input;
When erasing the image data stored in the storage unit, when the vibration erasing mode is selected and input by the operation unit, the image data to be deleted is deleted based on the operation input from the operation unit, Control means for storing shooting conditions to be erased in the shooting conditions table;
It is characterized by providing.

  According to the present invention, when erasing image data, it is possible to reflect the shooting condition in which the current vibration has occurred in the shooting condition table after the next shooting, and to accurately determine the shooting condition in which the vibration occurs after the next shooting. Can be detected.

According to a sixth aspect of the present invention, there is provided an electronic imaging apparatus comprising: an imaging unit that images a subject; and a storage unit that stores image data captured by the imaging unit.
The storage means stores a shooting condition table having shooting conditions corresponding to previously captured image data having vibrations and the number of matching shooting conditions,
Shooting condition acquisition means for acquiring current shooting conditions;
It is determined whether or not the shooting conditions of the shooting condition table stored in the storage unit match the current shooting conditions acquired by the shooting condition acquisition unit. Control means for counting up the number of matches corresponding to the matching shooting conditions in the shooting condition table;
It is characterized by providing.

The invention according to claim 7 is the electronic photographing apparatus according to any one of claims 1 to 6,
The shooting condition table stores a predetermined capacity or a predetermined number of shooting conditions in a first-in first-out manner.

The invention according to claim 8 is the electronic imaging apparatus according to any one of claims 1 to 7,
A user code input means for receiving an input of a user code for identifying the user;
The shooting condition table stores shooting conditions corresponding to the user code,
The control means reads out and uses the photographing condition corresponding to the current user code input from the user code input means from the photographing condition table of the storage means.

The invention according to claim 9 displays the image data stored in the storage means, the image pickup means for picking up the subject, the storage means for storing the image data picked up by the image pickup means together with the shooting conditions. In an electronic photographing apparatus comprising: a display unit; and an erasing unit that erases image data displayed on the display unit from the storage unit.
The erasing unit includes a first normal erasing unit that erases image data in a normal erasing mode;
A second erasing unit for erasing the image data from the storage unit and recording the photographing condition of the image data in the photographing condition table;
It is characterized by providing.

According to a tenth aspect of the present invention, in the vibration possibility warning method for warning the possibility of vibration when photographing a subject,
A shooting condition table having shooting conditions corresponding to image data in which vibrations that have been captured before has occurred is stored in advance in the storage means,
When shooting a subject, get the current shooting conditions,
It is determined whether or not there is a shooting condition in the shooting condition table stored in the storage unit that matches the acquired current shooting condition. If there is a matching shooting condition, vibration occurs. A vibration possibility warning indicating that there is a possibility is notified before photographing.

The invention according to claim 11 is the vibration possibility warning method according to claim 10,
Detect vibration above a certain level when shooting,
When the vibration is detected, the current shooting condition is stored in the shooting condition table of the storage means.

The invention according to claim 12 is the vibration possibility warning method according to claim 11,
Storing image data of the photographed subject in the storage means;
When erasing image data with vibration, it accepts selection input of either normal erasure mode or vibration erasure mode,
When the normal erasure mode is selected, the image data to be erased is erased from the storage unit, and the photographing conditions corresponding to the image data to be erased are erased from the photographing condition table,
When the vibration erasing mode is selected, image data to be erased is erased from the storage means.

The invention according to claim 13 is the vibration possibility warning method according to claim 10,
Storing image data of the photographed subject in the storage means;
When erasing image data with vibration, it accepts selection input of either normal erasure mode or vibration erasure mode,
When the normal erasure mode is selected, the image data to be erased is erased from the storage means,
When the vibration erasing mode is selected, the image data to be erased is erased from the storage means, and the photographing conditions corresponding to the image data to be erased are stored in the photographing condition table.

According to a fourteenth aspect of the present invention, in the vibration possibility warning method according to the thirteenth aspect,
Detect vibration above a certain level when shooting,
Image data in which vibration is detected at the time of photographing is used as the image data to be erased.

The invention according to claim 15 is the vibration possibility warning method according to any one of claims 10 to 14,
Detect vibration above a certain level when shooting,
When the vibration is detected, a vibration warning indicating the occurrence of vibration is notified before photographing.

The invention according to claim 16 is the vibration possibility warning method according to any one of claims 10 to 15,
The shooting condition table can store a predetermined capacity or a predetermined number of shooting conditions,
When the shooting conditions are stored in the shooting condition table, the shooting conditions are stored in a first-in first-out manner.

The invention according to claim 17 is the vibration possibility warning method according to any one of claims 10 to 16,
The shooting condition table stores shooting conditions corresponding to a user code for identifying a user,
Accepts user code operation input to identify the user during shooting,
When there is the matching photographing condition corresponding to the input user code, a vibration possibility warning indicating that vibration may occur is notified before photographing.

The invention described in claim 18
In a computer mounted on a device having storage means for storing image data obtained by capturing an image of a subject,
A function for storing in the storage means a shooting condition table having shooting conditions corresponding to image data in which vibrations that have been previously captured have occurred;
A function to acquire the current shooting conditions,
It is determined whether or not there is a shooting condition in the shooting condition table stored in the storage unit that matches the acquired current shooting condition, and blurring occurs when there is a matching shooting condition. A function that alerts you to a possible warning before shooting,
It is a program for realizing.

The invention according to claim 19 is
In a computer mounted on a device having storage means for storing image data obtained by capturing an image of a subject,
A function for storing in the storage means a shooting condition table having shooting conditions corresponding to image data in which vibrations that have been previously captured have occurred;
A function to acquire the current shooting conditions,
A function to accept operation input;
In erasing the image data stored in the storage means, when the vibration erasure mode is selected and input, based on the operation input from the operation means, erase the image data to be erased from the storage means, A function for storing the photographing condition to be erased in the photographing condition table;
It is a program for realizing.

The invention according to claim 20 provides
In a computer mounted on a device having storage means for storing image data obtained by capturing an image of a subject,
A function of storing in the storage means a shooting condition table having shooting conditions corresponding to image data in which vibration has been captured before and the number of matches of the shooting conditions;
Shooting condition acquisition means for acquiring current shooting conditions;
It is determined whether or not there is a shooting condition in the shooting condition table stored in the storage unit that matches the acquired current shooting condition, and if there is a matching shooting condition, the shooting condition table A function to count up the number of matches corresponding to the matching shooting conditions,
It is a program for realizing.

  According to the present invention, at the time of shooting, the user can be alerted to the shake (vibration) with reference to the previous shooting conditions, so the possibility of shooting a blurred (vibrated) image can be reduced. .

  In addition, according to the present invention, when erasing image data, the shooting condition in which the current shake (vibration) has occurred can be reflected in the shooting condition table after the next shooting, and after the next shooting, ) Can be accurately detected.

  DESCRIPTION OF EMBODIMENTS Hereinafter, preferred embodiments according to the present invention will be described in detail with reference to the accompanying drawings. First, the configuration of the apparatus will be described with reference to FIGS.

  FIG. 1 is an external view of a digital camera 1 according to the present embodiment. In the figure, the digital camera 1 is composed of a camera unit 5 and a main body unit 6, and the camera unit 5 and the main body unit 6 are relatively rotatably coupled. The camera unit 5 is provided with an imaging lens 11 (one-dot chain line) on the back side in the figure, and imaging is performed by rotating the camera unit 5 forward or backward in the figure with the main body unit 6 as an axis. The position of the lens 11 can be set to various positions, for example, moved to the position on the front side in the figure (the two-dot chain line portion).

  On the other hand, the main body unit 6 is provided with a liquid crystal display unit 12 including a liquid crystal display (LCD) on the front side in the drawing. The liquid crystal display unit 12 can display an image of a subject captured through the imaging lens 11 at the time of shooting, and can reproduce and display an image captured after shooting. Further, on the right side of the liquid crystal display unit 12, a mode change switch 13 is provided for instructing switching between a photographing mode, a processing mode, a reproduction mode, and the like by a vertical slide operation.

  The main body 6 has a power switch 14 for instructing on / off switching of power by sliding left and right on the upper surface side in the figure, a shutter key 15 for opening a shutter for a predetermined time, and instructing imaging, and imaging The select key 16a for instructing to store the captured image data in the flash memory 34, the delete key 16b for instructing to cancel the storage of the captured image data, etc., and adjusting the shutter speed, image brightness, contrast, hue, etc. For this purpose, a “+” key 17 and a “−” key 18 and a camera shake detection key 19 for instructing whether or not the camera shake detection function is set are provided. The camera shake detection key 19 also has a function of instructing activation of an erase mode setting menu (erase menu) during image data reproduction.

  The main body 6 is provided with an opening / closing lid 20 from the upper surface side to the rear surface side in the figure, and although not shown in the inside of the opening / closing lid 20, an external power supply terminal 20a for power supply, a liquid crystal A video output terminal 20b for outputting display data similar to display data to the display unit 12, and a serial input / output terminal 20c for inputting / outputting image data (compressed data), control signals, and the like are provided. Yes.

  FIG. 2 is a block diagram illustrating an internal configuration example of the digital camera 1. 2, the digital camera 1 includes an optical system 101 as an imaging unit, a signal conversion unit 102, a signal processing unit 103, a DRAM 32 as a storage unit, a control unit, and a control unit as first and second erasing units. 104, a key input unit 40 as an operation unit and a photographing condition acquisition unit, a liquid crystal display unit 12 as a display unit and a notification unit, a flash memory 34 as a storage unit and a photographing condition table storage unit, and a blur detection unit. The hand movement sensor 37 is provided.

The optical system 101 includes a lens unit 100 including an imaging lens 11, a photometric sensor, an automatic aperture mechanism, and the like (not shown). The optical system 101 converts a light beam of a subject image collected through the lens unit 100 into an image sensor (CCD) at a subsequent stage. ) Image on 25.
The signal conversion unit 102 includes a signal conversion circuit such as an A / D converter 27 and the like, and converts an image formed through the optical system 101 in the previous stage into an electric signal by the CCD 25 and converts the electric signal into an A / D signal. It is converted into digital data by the D converter 27 and outputted at a constant cycle.

  The signal processing unit 103 receives the digital data from the signal conversion unit 102, temporarily holds it in the form of Bayer data corresponding to the pixels of the CCD 25, interpolates it, creates RGB data, and further, luminance and color difference multiplexed signals. A signal component such as (Y, Cb, Cr data) is obtained. The Y, Cb, Cr data (hereinafter referred to as image data) is transferred to the DRAM 32 and temporarily stored. Further, in order to display a through image (photographing standby image), the captured image data is thinned out and sent to the liquid crystal display unit 12. When the shutter operation is performed, the image data at that time is sent to the liquid crystal display unit 12 to display a still image.

  Further, the signal processing unit 103 reads out image data written in the DRAM 32 when recording and saving, performs JPEG compression processing, saves and records it in the flash memory (storing memory) 34, and stores and records it in the flash memory (storing). A compression / decompression circuit 33 that performs decompression processing on the compressed image data stored and recorded in the memory 34 and reproduces the image data; and a thumbnail image generation unit that generates a thumbnail image (reduced image).

  The compression / decompression circuit 33 supports a plurality of compression ratios, and the mode for storing in correspondence with the compression ratio is a mode corresponding to a low high resolution (generally called high definition, fine, normal, etc.). There is a low-resolution (commonly called economy) mode with a high compression rate.

It also supports images with a plurality of pixels (from a high pixel count to a low pixel count). For example, there are image sizes called VGA (640 * 680), SVGA (800 * 600), XGA (1024 * 768), SXGA (1600 * 1200) and the like.
The DRAM 32 is used as a working memory, and an image buffer area for temporarily storing captured images, a working area for JPEG compression / expansion, and an image composition are secured.

  The control unit 104 has a microprocessor configuration including a CPU 41, a RAM 36, a ROM 35 for storing a program, and a timing mechanism such as a timer. The CPU 41 is connected to each circuit described above via the bus line B to store a program. The entire digital camera 1 is controlled by the control program stored in the ROM 35 for processing, and the processing program corresponding to each mode stored in the program storing ROM 35 corresponding to the status signal from the key input unit 40 And execution control of each function of the digital camera 1 is performed including execution of a flowchart described later.

  The ROM 35 stores reference vibration value data used in the photographing process (see FIGS. 4 and 5). As the value of the reference vibration value data, a value obtained from a permissible circle of confusion is set based on a vibration level that affects the image quality of a captured image.

  The liquid crystal display unit 12 includes a D / A converter (not necessary when the liquid crystal display unit 12 is a digital input / output display unit) 42 as a video encoder, a VRAM 31, a display screen unit 12a, and the like. By control, a through image at the time of imaging, a translucent image, a reproduced image at the time of reproduction, and a selection menu (or icon) at the time of processing selection are displayed on the display screen unit 12a.

  An I / O (Input / Output) port 44 receives serial data (image data, control signals, etc.) exchanged between the digital camera 1 and an external device connected via the serial input / output terminal 20c and a cable. The interface to control. For example, a cable such as RS232C (serial format) or USB (Universal Serial Bus) can be connected to the serial input / output terminal 20c.

  The flash memory 34 stores image data (compressed image data) and shooting conditions associated with the image data (for example, shooting date / time, aperture, shutter speed, ISO sensitivity setting value, zoom magnification, strobe light emission, peripheral light amount, number of pixels, (Compression rate or recording mode) is saved and recorded.

  The camera shake detection sensor 37 includes, for example, a piezoelectric vibration sensor that transmits vibration to a piezoelectric element (Piezo-Electric Element) and converts it into electromotive force. The camera shake detection sensor 37 is three-dimensional (X-axis direction, Y-axis direction, Z-axis) due to camera shake during shooting. The vibration in the axial direction is detected as an electrical signal (analog signal) proportional to the magnitude of the vibration, and is output to the A / D converter 39 via the buffer 38.

The camera shake detection sensor 37 includes a movable coil type vibration sensor that transmits vibration to a coil in a magnetic field and converts it into a voltage, an electromagnetic type vibration sensor that transmits vibration to an iron core in the coil and converts it into a change in impedance, and a resistance wire. A resistance vibration sensor that transmits vibration to a strain gauge and converts it into a resistance change, a magnetostriction vibration sensor that transmits vibration to a magnetostriction gauge and converts it into a magnetization strength, and a capacitive vibration that transmits vibration to a variable capacitor and converts it into a capacitance change A sensor, or a piezoelectric acceleration sensor, an inductance acceleration sensor, or the like may be used.
Further, the hand movement detection sensor 37 may be one that detects one-dimensional or two-dimensional vibration.

  The A / D converter 39 converts an electrical signal input from the camera shake detection sensor 37 via the buffer 38 from an analog signal to a digital signal, and outputs the converted digital signal (three-dimensional vibration data) to the CPU 41. .

  The key input unit 40 includes the mode switch 13, the power switch 14, the shutter key 15, the select key 16a, the delete key 16b, the “+” key 17, the “−” key 18, and the camera shake detection key 19 described above. The CPU 41 outputs various operation signals corresponding to the input operation of each key.

  The speaker 46 as a notification means emits a predetermined notification sound based on a drive signal input from the CPU 41 via the buffer 45, and detects that the battery has run out or a hand vibration of a predetermined level or more has been detected. To the photographer). The above is the configuration of the digital camera 1 in the present embodiment.

  Here, the shutter key 15 of the key input unit 40 operates in a two-stage stroke, and AF (autofocus) and AE (automatic exposure) are generally performed in a first-stage operation state expressed as “half-press”. ) Preparation for shooting including processing is performed, and shooting is executed in a second-stage operation state in which a stronger pressing operation, which is generally expressed as “full press”, is performed.

  Next, data stored in the flash memory 34 will be described with reference to FIG. FIG. 3 shows an internal configuration of the photographing condition table 34A stored in the flash memory 34. As shown in the figure, the shooting condition table 34A includes shooting date and time 341, a user code 342 for identifying a photographer (user), a shooting shutter speed 343, and F as shooting conditions in which camera shake has occurred. An exposure 344 indicating an exposure value such as a value, a macro 345 indicating ON / OFF of macro shooting, a zoom magnification 346 of shooting, and a strobe 347 indicating ON / OFF of a digital camera 1 during shooting of a flash (not shown) , And the number of matches 348 under the same photographing condition in which camera shake occurs.

  Each item of the imaging condition table 34A is updated each time an imaging process described later is executed. That is, in a certain shooting process, shooting condition information at the time of occurrence of camera shake until the previous shooting is stored. Further, only a predetermined capacity or a predetermined number of shooting conditions are stored in the shooting condition table 34A by the FIFO (first-in first-out) method, and the shooting conditions exceeding the predetermined number are deleted. Further, the items constituting the shooting conditions in the shooting condition table are not limited to the items shown in FIG. For example, it is not necessary to provide the user code 342 when it is not possible to distinguish between users who take pictures. Moreover, you may include the other item which comprises imaging | photography conditions. For example, the focal length of the subject.

  Next, the operation of the digital camera 1 will be described with reference to FIGS. The photographing process executed in the digital camera 1 will be described based on the flowcharts shown in FIGS. In the CPU 41, when the power switch 14 is slid and turned on, preprocessing such as initialization and main menu display is performed, and in this state, the mode switch 13 is slid to specify the shooting mode. . The shooting conditions are set and input in advance by an operation through the key input unit 40 of the user. The shooting conditions include shooting date / time, user code, shutter speed, exposure, macro, zoom magnification, strobe, and the like in the items of the shooting condition table 34 in FIG. The imaging conditions that have been set and input are temporarily stored in the RAM 36, for example.

  The user code may be, for example, a combination of letters and numbers, or may be fingerprint data that identifies the user. In this case, a fingerprint data reading unit is provided in the camera unit 5 or the main body unit of the digital camera 1, and fingerprint data as a user code is read by the fingerprint data reading unit.

  Then, triggered by the completion of the shooting condition setting input, the CPU 41 reads out a program relating to the shooting process stored in the ROM 35 and develops it in the RAM 36, and the shooting process is performed in cooperation with the developed program and the CPU 41. Is started.

  First, it is determined whether or not the user has pressed the shutter key 15 halfway (step S11). If the shutter key 15 is not half-pressed (step S11; NO), the process returns to step S11, and subsequently, it is monitored whether or not the shutter key 15 has been pressed halfway.

  If the shutter key 15 is half-pressed (step S11; YES), the currently set shooting conditions stored in the RAM 36 are acquired, and the currently set shooting conditions and the flash memory 34 are stored. The shooting conditions up to the previous shooting as each item in the shooting condition table 34A are compared (step S12). For example, when autofocus, automatic exposure, or the like is activated by half-pressing the shutter key 15, the focal length, the exposure value, and the like are acquired as shooting conditions in step S12.

  Then, based on the comparison result in step S12, it is determined whether there is a shooting condition in the shooting condition table 34A that matches the current shooting condition (step S13). As shown in FIG. 3, the shooting condition includes at least one item, and whether or not the shooting condition matches may be determined by whether or not all the shooting condition items match. It may be determined whether or not a predetermined number or more of the items match, or may be determined whether or not the ratio of the matching items among all the items is equal to or more than a predetermined rate.

  If there is a match with the shooting conditions (step S13; YES), a warning that the current shooting conditions are the same as the shooting conditions in which camera shake has occurred previously is displayed on the display screen unit 12a of the liquid crystal display unit 12. At the same time, a drive signal is output to the buffer 45, a predetermined notification sound is emitted from the speaker 46, and the user is notified that there is a possibility of hand shaking (step S14). For example, a screen 12A as shown in FIG. 6 is displayed on the display screen unit 12a. FIG. 6 shows the configuration of the screen 12A. The screen 12A includes a warning message 48 indicating that the current shooting condition is the same as the shooting condition in which the camera shake has occurred, and a shooting condition display unit 49 that displays the exposure and shutter speed together with the through image of the subject. included.

  Then, it is determined whether or not the shutter key 15 has been fully pressed by the user (step S15). If there is no image that matches the shooting conditions (step S13; NO), the process proceeds to step S15. If the shutter key 15 has not been fully pressed (step S15; NO), it is determined whether or not the user has released the shutter key 15 (step S16). When the shutter key 15 is released (step S16; YES), the process returns to step S11. If the shutter key 15 is not released (step S16; NO), the process returns to step S12.

  When the shutter key 15 is fully pressed (step S15; YES), an image is taken into the signal converter 102 and a signal is output. The signal conversion unit 102 generates a timing signal based on the video capture signal and outputs the timing signal to the optical system 101. The optical system 101 drives and controls the exposure and readout timings of the CCD 25 based on the timing signal. To capture the image signal. The A / D converter 27 converts the captured image signal from an analog signal to a digital signal, and the signal processing unit 103 performs color calculation processing on the image signal, generates image data, and temporarily stores it in the DRAM 32. (Step S17).

  Next, it is determined whether or not the camera shake detection function is set based on the pressing operation of the camera shake detection key 19 (step S18). If the camera shake detection function is not set (step S18; NO), the image data (Y data and C data) stored in the DRAM 32 is transferred to the compression / decompression circuit 33 and subjected to compression processing. The processed image data is stored in a predetermined area of the flash memory 34 (step S19), and the process returns to step S1.

  When it is determined that the camera shake detection function is set (step S18; YES), three-dimensional vibration data input from the camera shake detection sensor 37 via the buffer 38 and the A / D converter 39 is acquired ( Step S20). Then, based on the acquired three-dimensional vibration data value, the value of the hand vibration value data is calculated by a calculation process (step S21).

  Next, the reference vibration value data is read from the ROM 35 and compared with the value of the hand vibration value data calculated in step S21 to determine whether or not the value of the hand vibration value data is equal to or greater than the value of the reference vibration value data. (Step S22). If it is determined that the value of the hand vibration value data is smaller than the value of the reference vibration value data (step S22; NO), the process proceeds to step S19, the captured image data is subjected to compression processing, and a predetermined value in the flash memory 34 is determined. After being stored in the area, the process returns to step S11.

  When it is determined that the value of the hand vibration value data is greater than or equal to the value of the reference vibration value data (step S22; YES), the captured image data is read from the DRAM 32, and the signal processing unit 103, the VRAM 31, and the D / A conversion. The image is transferred to the liquid crystal display unit 12 via the device 42 and the buffer 43, and the captured image is reproduced and displayed on the display screen unit 12a (step S23).

  Next, as shown in FIGS. 7A and 7B, a camera shake detection mark 47a or a camera shake detection message 47b is displayed on the display screen unit 12a, and a drive signal is output to the buffer 45, and a predetermined signal is output from the speaker 46. A notification sound is emitted, and the user is notified that hand vibration of a predetermined level or more has been detected (step S24).

  Then, the current shooting conditions stored in the RAM 36 are saved in the shooting condition table 34A in the flash memory 34 in a FIFO manner (step S25). However, for shooting conditions overflowing with the FIFO method, data with a match count 348 of 1 or more, that is, shooting conditions for the second and subsequent occurrences of camera shake are not erased.

  Then, it is determined whether or not there is a shooting condition that matches the current shooting condition in the shooting condition table 34A (step S26). If there is the same shooting condition (step S26; YES), the number of matches 348 in the shooting condition table 34A is counted up corresponding to the shooting condition (step S27).

  Next, as shown in FIG. 7C, a message 47c asking whether to store the captured image data is displayed on the display screen unit 12a (step S28). When there is no same photographing condition (step S26; NO), the process proceeds to step S28.

  Then, it is determined whether or not the captured image data is stored (step S29). When the user presses the select key 16a to instruct to store the captured image data and to store the captured image data (step S29; YES), the process proceeds to step S19, and the captured image data is compressed. After being processed and stored in a predetermined area of the flash memory 34, the process returns to step S11.

  Further, when the delete key 16b is pressed by the user to instruct that the captured image data is not stored and the captured image data is not stored (step S29; NO), the image data stored in the DRAM 32 is stored in the flash memory 34. It returns to step S1.

  In the above photographing process, in step S14, the warning message 48 indicating that the current photographing condition is the same as the photographing condition in which the camera shake has occurred is displayed on the liquid crystal display unit 12. However, the present invention is not limited thereto. It is not a thing. For example, it may be configured such that a mark or the like indicating that a shooting condition has previously occurred is set in advance and the mark or the like is displayed.

  Further, in the above-described shooting process, as a control configuration for displaying a camera shake detection mark 47a and a camera shake detection message 47b (see FIG. 7) on the liquid crystal display unit 12 according to the state of camera shake vibration at the time of shooting after taking an image of a subject. However, this is not limited to the above-described contents. When a camera shake of a predetermined level or higher is detected regardless of whether or not an image is captured in the shooting mode, a camera shake detection mark 47a or a camera shake detection message 47b is displayed on the liquid crystal display unit 12. It is good also as a structure to display. With such a configuration, it is possible to grasp the state of camera shake in advance at the time of imaging, and the usability can be further improved.

  Further, in the present embodiment, the camera shake detection sensor 37 outputs a vibration detection signal that becomes “Hi” when detecting a vibration of a predetermined level or higher to the CPU 41, and the CPU 41 performs the above operation when the shutter key 15 is pressed. If the vibration detection signal is “Hi”, it may be configured such that vibration detection due to camera shake is notified and whether or not the captured image data is stored in the flash memory 34 is determined according to a key operation.

  Next, the erasing process executed in the digital camera 1 will be described based on the flowchart shown in FIG. The erasing process is a process of erasing only the image data or erasing the image data together with the stored shooting conditions. In the CPU 41, when the power switch 14 is slid and turned on, preprocessing such as initialization and main menu display is performed. In this state, the mode selector switch 13 is slid to designate the reproduction mode. . Then, any image data stored in the flash memory 34 is selected and reproduced and displayed on the display screen unit 12 a of the liquid crystal display unit 12 by the user's operation via the key input unit 40.

  Then, triggered by the fact that the image data has been reproduced and displayed, the CPU 41 reads out the program related to the erasing process stored in the ROM 35 and develops it in the RAM 36, and the erasing process is performed in cooperation with the developed program and the CPU 41. Be started. The erasure process is a process that is repeatedly executed at a predetermined cycle until the image data being reproduced is erased.

  First, it is determined whether or not the camera shake detection key 19 as an erasure key is pressed by the user during the reproduction of the image data (step S31). If the camera shake detection key 19 as the erase key has not been pressed (step S31; NO), the erase process is terminated. When the camera shake detection key 19 as an erasure key is pressed (step S31; YES), a screen 12B including an erasure menu 50 as shown in FIG. 9 is displayed on the display screen portion 12a of the liquid crystal display portion 12, and key input is performed. The erase mode in the erase menu 50 is selected and input via the unit 40 (step S32).

  The screen 12B includes an imaging condition display unit 49. The erase menu 50 includes a normal erase mode selection unit 50a for selecting a normal erase mode, a camera shake erase mode selection unit 50b for selecting a camera shake erase mode, and canceling image data erase execution. The cancel selection unit 50c. The normal erasure mode is a mode for erasing the reproduced image data together with shooting conditions stored corresponding to the image data. The camera shake erasure mode is a mode for erasing the reproduced image data and leaving (not erasing) the photographing conditions stored corresponding to the image data.

  In step S32, it is determined which erase mode is selected and input (step S33). If cancel is selected and input (step S33; cancel), the erasure process is terminated. When the normal deletion mode is selected (step S33; normal deletion mode), the shooting conditions corresponding to the image data being reproduced are deleted from the shooting condition table 34A in the flash memory 34 (step S34). Then, the image data being reproduced is erased from the flash memory 34 (step S35), and the erasure process is terminated. When the camera shake erasure mode is selected (step S33; camera shake erasure mode), the process proceeds to step S35.

  As described above, according to the present embodiment, in the digital camera 1, the shooting condition table 34A having the shooting conditions corresponding to the image data in which the previous camera shake has occurred is stored in the flash memory 34 by executing the shooting process. Current shooting conditions are acquired at the time of shooting, and it is determined whether or not the shooting conditions in the shooting condition table 34A match the current shooting conditions. If there are matching shooting conditions, camera shake may occur. Since the warning message 48 indicating that there is a possibility is displayed on the liquid crystal display unit 12 before shooting, the user can be alerted to camera shake by referring to the previous shooting conditions at the time of shooting. The possibility of doing so can be reduced.

  Further, when the camera shake detection sensor 37 determines that the camera shake vibration value data based on the vibration value detected by the camera shake detection sensor 37 is larger than the value of the reference vibration value data stored in the ROM 35, the current shooting condition is set to the shooting. Since it is stored in the condition table 34A, it is possible to reflect the shooting condition in which the current camera shake has occurred in the shooting condition table after the next shooting, and to accurately detect the shooting condition in which the camera shake occurs after the next shooting. .

  In addition, since the shooting conditions are stored in the shooting condition table 34A in a FIFO manner, the shooting conditions in which the current camera shake has occurred are reflected in the shooting condition table 34A after the next shooting, and the old shooting conditions are deleted from the shooting condition table 34A. Therefore, the memory capacity of the shooting condition table 34A can be saved, and the shooting conditions in which camera shake occurs can be detected based on the shooting condition table 34A having shooting conditions close to the present.

  The shooting condition table 34A stores shooting conditions corresponding to the user code 342, and reads shooting conditions corresponding to the user code of the user at the time of shooting input from the key input unit 40 from the shooting condition table 34A. Then, it is determined whether or not there is a shooting condition corresponding to the user code in the shooting condition table 34A that matches the current shooting condition. If there is a matching shooting condition, there is a possibility that camera shake may occur. Since the warning message 48 indicating that there is a message is displayed on the liquid crystal display unit 12 before shooting, it is possible to urge each user to pay attention to the camera shake corresponding to the user, and to further improve the occurrence of camera shake during shooting. Can be reduced.

  Further, the shooting condition table 34A stores the shooting conditions corresponding to the image data in which the previous camera shake has occurred and the shooting condition matching count 348, and the shooting conditions in the shooting condition table 34A match the current shooting conditions. When there is a matching shooting condition, the number of matches 348 corresponding to the shooting condition is counted up. For example, the current shooting condition is that the match count 348 is equal to or greater than a predetermined number. A warning message 48 indicating that a camera shake may occur when it matches the shooting condition is displayed, and various notifications that a camera shake may occur according to the number of matches can be made.

  Further, according to the present embodiment, when the camera shake erasure mode is set by executing the erasure process in the digital camera 1, the image data to be erased is based on the operation input from the key input unit 40. Since the shooting conditions corresponding to the image data to be erased are not erased while being stored in the shooting condition table 34A, the shooting conditions in which the current camera shake has occurred are also deleted. It can be reflected in the shooting condition table after the next shooting, and the shooting conditions in which camera shake occurs after the next shooting can be accurately detected.

  Further, when the value of the hand vibration value data based on the vibration value detected by the hand movement detection sensor 37 is larger than the value of the reference vibration value data stored in the ROM 35, the fact is notified and the captured image data is stored. Whether or not to do so is determined by key operation, so that the imaged image data can be recognized on the spot without being transferred to an external device such as a personal computer or television for display. It becomes possible to do. In addition, it is possible to prevent the captured image data whose image quality is deteriorated due to camera shake vibration from being stored in the flash memory 34, and the memory capacity of the flash memory 34 can be used efficiently.

  Further, when the value of the hand vibration value data based on the vibration value detected by the hand movement detection sensor 37 is larger than the value of the reference vibration value data stored in the ROM 35, the hand shake detection mark 47a, the hand shake detection message 47b, or Since the message 47c asking whether or not to store the captured image data is displayed on the liquid crystal display unit 12, it is possible to grasp at a glance the detection status of camera shake vibration or the like via the liquid crystal display unit 12. .

  Further, when camera shake vibration of a predetermined level or more is detected at the time of shooting, the liquid crystal display unit 12 captures an image together with a camera shake detection mark 47a, a camera shake detection message 47b, or a message 47c asking whether to store the captured image data. Therefore, it is possible to immediately confirm the image quality on the spot for image data captured in a state where there is a hand vibration of a predetermined level or higher. In addition, by reproducing and displaying the captured image together with the notification of camera shake detection in this way, it becomes easier to confirm a decrease in image quality due to camera shake vibration, and the time required for the confirmation operation can be shortened. Further, the photographer determines whether or not to store the image data in the flash memory 34 according to the confirmation result, and determines whether or not to store the image data in the flash memory 34 according to the key input from the photographer. Since the determined configuration is adopted, it is possible to prevent the captured image data whose image quality has been deteriorated due to camera shake vibration from being stored in the flash memory 34, and to efficiently utilize the memory capacity of the flash memory 34. Is possible.

  In addition, since the camera shake detection function can be set to be valid or invalid, the camera shake detection function can be switched on / off according to the shooting situation.

  The present invention has been specifically described above based on the above embodiment, but the present invention is not limited to the above embodiment, and can be appropriately changed without departing from the gist thereof.

  For example, in the above-described embodiment, in step S25 of the photographing process, the photographing condition of the image data photographed with the occurrence of camera shake is stored in the photographing condition table 34A. However, the present invention is not limited to this. For example, in step S25, the shooting conditions corresponding to the image data to be erased are deleted in step S34 of the erasure process executed during reproduction of the image data after shooting without saving the shooting conditions in the shooting condition table 34A. The configuration may be such that the data is read from the RAM 36 and stored. In this configuration, in step S25 of the photographing process, a camera shake flag is set for the photographing condition in which the camera shake occurs in the RAM 36, and in step S34 of the erasing process, photographing corresponding to the image data to be erased is performed based on the camera shake flag. The condition may be read from the RAM 36 and stored.

  The reference vibration value data may be stored in the flash memory 34. In this case, the reference vibration value data recorded in the flash memory 34 may be changed by setting input through the key input unit 40 by the user. Also, a plurality of reference vibration value data may be stored, and appropriate reference vibration value data may be selected from the plurality of reference vibration value data by setting input via the key input unit 40 by the user.

  In the above embodiment, the warning message 48 indicating that the current shooting condition is a shooting condition in which camera shake has occurred previously is displayed and sound is emitted from the speaker 46. However, the present invention is not limited to this. Absent. For example, it is good also as a structure alert | reported by any one of a display and sound emission. Further, an LED (Light Emitting Diode) is provided in the camera unit 5 or the main body unit 6 of the digital camera 1, and when the current shooting condition is a shooting condition in which camera shake has previously occurred, this LED is turned on to notify. It is good also as a structure. In addition, a vibrator may be provided in the camera unit 5 or the main body unit 6 of the digital camera 1, and the vibrator may be vibrated when the current shooting condition is a shooting condition in which camera shake has previously occurred. Further, it is preferable that the notification that the current shooting condition is a shooting condition in which camera shake has occurred previously can be distinguished from the notification that camera shake has actually occurred during shooting.

  Further, the shape, content, display position, and the like of the warning message 48 are not limited to those shown in the above embodiment. In the above embodiment, the liquid crystal display unit 12 is configured to display an image of a subject captured through the imaging lens 11 at the time of shooting, and to reproduce and display an image taken after shooting. However, this is not limited to the above contents, and the liquid crystal display unit 12 may of course be configured to display only information such as battery exhaustion and the remaining number of stored images.

  In the above embodiment, the vibration detected by the camera shake detection sensor 37 is not limited to the vibration caused by the camera shake. For example, when photographing in a moving car or the like, vibration transmitted to the digital camera 1 via a tripod or a photographer due to movement of the car is detected as camera shake vibration.

The electronic photographing apparatus of the present invention is not limited to a digital camera, and may be a mobile phone having a photographing function, a PHS (Personal Handyphone System), a PDA (Personal Digital Assistants), or the like. For example, a portable electronic device having an imaging function (image input function) equivalent to that of a digital camera by mounting a PC camera card of a PCMCIA (Personal Computer Memory Card International Association) standard equipped with a CCD camera. It can also be applied to personal computers. In this case, the control program such as the photographing process (see FIGS. 4 and 5) and the erasing process (see FIG. 8) shown in the above embodiment may be provided on the portable electronic device or personal computer side. Good.

1 is an external perspective view showing an external shape of a digital camera 1 according to an embodiment of the present invention. It is a block diagram which shows the internal circuit structure of the digital camera 1 of FIG. It is a figure which shows the internal structure of the imaging | photography condition table 34A stored in the flash memory 34. FIG. It is a flowchart which shows an imaging | photography process. FIG. 5 is a continuation flowchart of FIG. 4 showing a photographing process. It is a figure which shows the structure of 12 A of screens containing the warning message 48 which shows that the present imaging conditions correspond with the imaging conditions with which camera shake occurred previously. It is a figure which shows the example of a display of the message 47c which asks whether the camera shake detection mark 47a displayed on a display screen, the camera shake detection message 47b, and the imaged image data are memorize | stored. It is a flowchart which shows an erasure | elimination process. It is a figure which shows the structure of the screen 12B containing the deletion menu 50. FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Digital camera 5 Camera part 6 Main body part 11 Imaging lens 12 Liquid crystal display part 31 VRAM
42 D / A converter 12a Display screen section 15 Shutter key 16a Select key 16b Delete key 17 “+” key 18 “−” key 19 Camera shake detection key 101 Optical system 100 Lens section 25 CCD
102 signal converter 27 A / D converter 103 signal processor 33 compression / decompression circuit 32 DRAM
34 Flash memory 37 Camera shake detection sensor 38 Buffer 39 A / D converter 104 Control unit 41 CPU
35 ROM
36 RAM
44 I / O port 45 Buffer 46 Speaker 20b Video output terminal 20c Serial input / output terminal B Bus line 47a Camera shake detection mark 47b Camera shake detection message 47c Memory message 48 Warning message 49 Shooting condition display section 50 Erase menu 50a Normal erase mode selection section 50b Camera shake elimination mode selection unit 50c Cancel selection unit

Claims (20)

An electronic imaging apparatus comprising: an imaging unit that images a subject; and a storage unit that stores image data captured by the imaging unit.
Shooting condition acquisition means for acquiring current shooting conditions;
Photographing condition table storage means for storing a photographing condition table having photographing conditions corresponding to image data in which blurring has been taken before;
An informing means for informing a warning;
At the time of shooting, it is determined whether there is a shooting condition in the shooting condition table that matches the current shooting condition acquired by the shooting condition acquisition unit. Control means to warn by,
An electronic photographing apparatus comprising: An operation means for accepting an operation input is provided,
When erasing image data stored in the storage unit, the control unit selects image data to be erased based on an operation input from the operation unit when a blur erasure mode is selected and input by the operation unit. 2. The electronic photographing apparatus according to claim 1, wherein the photographing condition is erased from the storage means, and photographing conditions corresponding to the image data to be erased are stored in the photographing condition table. Equipped with a blur detection means for detecting a blur of a predetermined level or more during shooting,
The electronic photographing apparatus according to claim 2, wherein the control unit causes the notification unit to notify a blur warning indicating the occurrence of blur when the blur detection unit detects a blur.   The control means, when erasing image data in which blur is detected by the vibration detection means at the time of photographing, from the storage means, when the blur elimination mode is selected and input by the operation means, the operation input from the operation means 4. The electronic photographing apparatus according to claim 3, wherein the image data to be erased is erased from the storage unit based on the information, and the photographing condition for the erase target is stored in the photographing condition table. An electronic imaging apparatus comprising: an imaging unit that images a subject; and a storage unit that stores image data captured by the imaging unit.
The storage means stores a shooting condition table having shooting conditions corresponding to image data in which vibrations that have been previously captured have occurred,
Shooting condition acquisition means for acquiring current shooting conditions;
An operation means for receiving an operation input;
When erasing the image data stored in the storage unit, when the vibration erasing mode is selected and input by the operation unit, the image data to be deleted is deleted based on the operation input from the operation unit, Control means for storing shooting conditions to be erased in the shooting conditions table;
An electronic photographing apparatus comprising: An electronic imaging apparatus comprising: an imaging unit that images a subject; and a storage unit that stores image data captured by the imaging unit.
The storage means stores a shooting condition table having shooting conditions corresponding to previously captured image data having vibrations and the number of matching shooting conditions,
Shooting condition acquisition means for acquiring current shooting conditions;
It is determined whether or not the shooting conditions of the shooting condition table stored in the storage unit match the current shooting conditions acquired by the shooting condition acquisition unit. Control means for counting up the number of matches corresponding to the matching shooting conditions in the shooting condition table;
An electronic photographing apparatus comprising:   The electronic photographing apparatus according to claim 1, wherein the photographing condition table stores a predetermined capacity or a predetermined number of photographing conditions in a first-in first-out manner. A user code input means for receiving an input of a user code for identifying the user;
The shooting condition table stores shooting conditions corresponding to the user code,
8. The control unit according to claim 1, wherein the control unit reads out and uses the shooting condition corresponding to the current user code input from the user code input unit from the shooting condition table of the storage unit. The electronic imaging device according to item. Imaging means for imaging a subject, storage means for storing image data captured by the imaging means together with imaging conditions for imaging, display means for displaying image data stored in the storage means, and display on the display means In an electronic photographing apparatus comprising an erasing unit that erases the image data that has been recorded from the storage unit,
The erasing unit includes a first normal erasing unit that erases image data in a normal erasing mode;
A second erasing unit for erasing the image data from the storage unit and recording the photographing condition of the image data in the photographing condition table;
An electronic imaging apparatus comprising: In the vibration possibility warning method that warns the possibility of vibration when shooting a subject,
A shooting condition table having shooting conditions corresponding to image data in which vibrations that have been captured before has occurred is stored in advance in the storage means,
When shooting a subject, get the current shooting conditions,
It is determined whether or not there is a shooting condition in the shooting condition table stored in the storage unit that matches the acquired current shooting condition. If there is a matching shooting condition, vibration occurs. A vibration possibility warning method characterized by notifying a vibration possibility warning indicating that there is a possibility before photographing. Detect vibration above a certain level when shooting,
11. The vibration possibility warning method according to claim 10, wherein when the vibration is detected, the current shooting condition is stored in a shooting condition table of the storage unit. Storing image data of the photographed subject in the storage means;
When erasing image data with vibration, it accepts selection input of either normal erasure mode or vibration erasure mode,
When the normal erasure mode is selected, the image data to be erased is erased from the storage unit, and the photographing conditions corresponding to the image data to be erased are erased from the photographing condition table,
12. The vibration possibility warning method according to claim 11, wherein when the vibration erasing mode is selected, the image data to be erased is erased from the storage means. Storing image data of the photographed subject in the storage means;
When erasing image data with vibration, it accepts selection input of either normal erasure mode or vibration erasure mode,
When the normal erasure mode is selected, the image data to be erased is erased from the storage means,
When the vibration erasing mode is selected, the image data to be erased is erased from the storage unit, and the photographing conditions corresponding to the image data to be erased are stored in the photographing condition table. Item 15. The vibration possibility warning method according to Item 10. Detect vibration above a certain level when shooting,
The vibration possibility warning method according to claim 13, wherein image data in which vibration is detected at the time of shooting is used as the image data to be erased. Detect vibration above a certain level when shooting,
The vibration possibility warning method according to any one of claims 10 to 14, wherein when the vibration is detected, a vibration warning indicating the occurrence of vibration is notified before photographing. The shooting condition table can store a predetermined capacity or a predetermined number of shooting conditions,
The vibration possibility warning method according to any one of claims 10 to 15, wherein when the shooting condition is stored in the shooting condition table, the shooting condition is stored in a first-in-first-out manner. The shooting condition table stores shooting conditions corresponding to a user code for identifying a user,
Accepts user code operation input to identify the user during shooting,
The vibration possibility warning indicating that vibration is likely to occur is notified before photographing when there is the matching photographing condition corresponding to the input user code. The vibration possibility warning method according to any one of the above. In a computer mounted on a device having storage means for storing image data obtained by capturing an image of a subject,
A function for storing in the storage means a shooting condition table having shooting conditions corresponding to image data in which vibrations that have been previously captured have occurred;
A function to acquire the current shooting conditions,
It is determined whether or not there is a shooting condition in the shooting condition table stored in the storage unit that matches the acquired current shooting condition, and blurring occurs when there is a matching shooting condition. A function that alerts you to a possible warning before shooting,
A program to realize In a computer mounted on a device having storage means for storing image data obtained by capturing an image of a subject,
A function for storing in the storage means a shooting condition table having shooting conditions corresponding to image data in which vibrations that have been previously captured have occurred;
A function to acquire the current shooting conditions,
A function to accept operation input;
In erasing the image data stored in the storage means, when the vibration erasure mode is selected and input, based on the operation input from the operation means, erase the image data to be erased from the storage means, A function for storing the photographing condition to be erased in the photographing condition table;
A program to realize In a computer mounted on a device having storage means for storing image data obtained by capturing an image of a subject,
A function of storing in the storage means a shooting condition table having shooting conditions corresponding to image data in which vibration has been captured before and the number of matches of the shooting conditions;
Shooting condition acquisition means for acquiring current shooting conditions;
It is determined whether or not there is a shooting condition in the shooting condition table stored in the storage unit that matches the acquired current shooting condition, and if there is a matching shooting condition, the shooting condition table A function to count up the number of matches corresponding to the matching shooting conditions,
A program to realize

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