JPH11144026A - Image data processor - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide the image data processor of simple constitution which can actualize the telephoto effect of a silver salt photograph. SOLUTION: A photographic image inputted from a digital camera is displayed on a monitor 13, a specific area S1 is set for the displayed photographic image by using a mouse, and a keyboard is operated to input image data process commands. An image processing part operates under the command of a CPU to perform a sharpening process for the pixels in the specific area S1 by increasing the number of pixels per unit area by an interpolating process for pixels and emphasizing the outline of the image in the specific area S1 as many times as set and also performs a defocusing process for an unspecified area S2 by thinning out pixels by filtering as many times as set. Consequently, the telephoto effect of the same high quality with a silver salt photograph can be given to the photographic image D.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

[0001] 1. Field of the Invention [0002] The present invention relates to an image data processing apparatus for performing image processing on image data taken in from the outside so as to give a telephoto effect to an image to be formed.

[0002]

2. Description of the Related Art A digital camera of a class generally used is provided with a fixed-focus type wide-angle lens, which always has a large depth of field, and almost all parts of a screen are sharp and sharp. It is not possible to obtain a high telephoto effect like a silver halide photograph taken by a conventional interchangeable lens camera. In connection with this, Japanese Patent Application Laid-Open No. 6-292052 discloses a low-precision, wide-angle image obtained by photographing the entire range of a subject image with a wide-angle lens in an entire image memory.
A high-precision, narrow-angle partial image of a predetermined portion of the subject image obtained by photographing with a telephoto lens is recorded in a partial image memory, the partial image is fitted into the entire image, and only a predetermined portion of the subject image is heightened. A still image capturing device for creating a precise image is disclosed. In the still image capturing device according to the present disclosure,
Although a part of the subject can be formed into a high-precision image, the telephoto effect obtained by the conventional silver halide photography cannot be obtained.

[0003]

As described above, the telephoto effect obtained by the conventional silver halide photography cannot be realized by the imaging operation using the conventional digital camera. The present invention has been made in view of the current state of the imaging operation of such a digital camera, and has as its object to provide an image data processing device capable of realizing a telephoto effect in silver halide photography with a simple configuration. To provide.

[0004]

According to one aspect of the present invention, there is provided an image data processing apparatus for performing image processing to give a telephoto effect to an image of image data taken in from the outside. A designated area setting means for setting a designated area with respect to the image of the image data fetched from outside, and an effect level of image data processing applied to the image area set by the designated area setting means. An effect level setting means for setting, and a sharpening process of an effect level set by the effect level setting means on the designated area, and an effect level set by the effect level setting means on an image area outside the designated area Image data processing means for performing a blurring process.

[0005]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS. FIG. 1 is a block diagram showing a configuration of the present embodiment, FIG. 2 is a block diagram showing a configuration of a digital camera for transferring image data to the present embodiment, and FIG. 3 is an explanatory diagram of a designated area setting according to the present embodiment. FIG. 4 is a flowchart showing the operation of the present embodiment, and FIG. 5 is an explanatory diagram showing the relationship between the focal length and the angle of view of a lens of a digital camera for transferring image data to the present embodiment.

[0006] Image data processing apparatus 2 according to the present embodiment
0, as shown in FIG.
U1 is provided. The CPU 1 has a memory 2 for storing a control program and performs image processing on image data.
A chip set 3 for controlling input / output signals is connected.

The chipset 3 includes an IRQ (Int
interrupt controller 4, which performs interrupt control such as signal request control, and ISA (In)
dustal Standard Architect
cture), PCI (Peripheral Com)
a bus controller 5 for controlling the operation of each of the mounted IC circuits, and a DMA controller (Dir) for controlling data transfer that does not pass through the CPU 1, based on an expansion bus such as a Pentant Interconnect Bus.
ect Memory Access Contro
and an image processing unit 6 for performing image processing on image data. The CPU 1 is connected to the interrupt controller 4, the image processing unit 6, and the DMA controller 7, and the memory 2 is connected to the DMA controller 7. A bus controller 5 is connected to the interrupt controller 4.

The interrupt controller 4 is connected to a clock generator 8 for outputting a reference clock. The bus controller 5 is connected to a keyboard 10 for inputting various commands during operation. 7 is connected to the extension bus 11.

Further, a video card 12 having a video chip mounted thereon is connected to the expansion bus 11 for controlling complicated video processing in place of the CPU 1 and displaying the processed video on a monitor 13. , Monitor 13 are connected. Similarly, an IDE (Integrated Drive Ele) for performing an interface operation with a hard disk drive (HDD) is provided on the extension bus 11.
tronics) 14, an FDC (FDC) for performing an interface operation with a floppy disk drive (FDD).
LLppy Disk Controller) 16,
And an input / output circuit 18 for transmitting and receiving signals to and from an external device.

A hard disk drive (HDD) 15 for driving a hard disk is connected to the IDE 14, a floppy disk drive (HDD) 15 for driving the FD is connected to the FDC 16, and an input / output circuit 1 is provided.
A digital camera 19 and a mouse 21 are connected to 8. Although not shown, various external devices such as a modem and a printer are connected to the input / output circuit 18. As the input / output circuit 18, US
B, IrDA, IEEE1394 and the like can be used.

A digital camera 19 connected to the present embodiment has a configuration as shown in FIG. 2, and a camera ASIC 23 for performing various image processing such as gamma correction on a CCD 22 for receiving pixel data of a subject image. Are connected, RAM, DAM (Direct Memory)
Access), a DISK processor for performing image processing, and an input / output circuit. The camera ASIC 23 is connected to a microprocessor 28 that controls the entire operation. The microprocessor 28 includes an operation unit 31 to which various operation signals are input, a color LCD 30 for displaying an image, and a ROM for storing a control program.
24, DRAM 25 for storing pixel data, JPEG
A flash memory 26 in which data is stored and a buffer 27 that performs a buffer operation when transferring data to the image data processing device 19 are connected.

The image data processing apparatus 20 according to the present embodiment having such a configuration, and the input / output circuit 18
The operation of the digital camera 19 connected to and used for will be described with reference to FIG.

In the digital camera 19, when a subject is photographed by operating the operation section 31, the CCD 2
The pixel data received at 2 is input to the camera ASIC 23, and the image processing logic circuit of the camera ASIC 23
Various image processing such as γ correction is performed, and the image data is transferred to the microprocessor 28 and subjected to image compression processing. The pixel data subjected to the image compression processing is stored in the DRAM 25.

Next, with respect to the pixel data read from the DRAM 25, the microprocessor 28
DCT and color conversion are performed, and further, quantization processing and Huffman encoder processing are performed, and the obtained JPEG data is stored in the flash memory 26. And
If you want to check the captured image during shooting or playback,
By operating the operation unit 31, the captured image is displayed on the color LCD 30 by the microprocessor 28, and the operator confirms the captured image.

When the operator operates the keyboard 10 after confirming the target photographed image on the color LCD 30 in this manner, the image data of the photographed image is stored in the flash memory 26 of the digital camera 19 by the instruction of the CPU 1. Is transferred via the buffer 27, the input / output circuit 18, and the expansion bus 11, and the image processing unit 6
Converts the compressed data into video data. The converted video data is input and stored in the video card 12 under the control of the DMA controller 7. In this case, the program read from the HDD 15
1 and the memory 2 are processed. further,
The image data is read from the video card 12 and input to the monitor 13, and a target captured image is displayed on the monitor 13. In this case, the interrupt controller 4
1 is controlled by the IRQ signal for calling the CPU 1 and the video card 12 performs its own processing while the CPU 1 is executing the processing.
The video card 12 is stored in the C by the DMA controller 7.
Data transfer is performed without going through PU1.

As described above, on the monitor 13, for the target photographed image D displayed as shown in FIG. 3, the operator uses the mouse 21 in step S 1 of the flowchart of FIG. Is set, a designated area S1 for performing image processing of the telephoto effect is set. Next, in step S2, the operator operates the keyboard 10 to set the effect level of the image data processing by performing the image data processing once or twice.

By these operations, the information of the designated area S1 and the information of the effect level of the processing are input to the CPU 1,
In response to a command from PU1, the image processing unit 6 performs a sharpening process on the image data of the designated region S1 of the captured image D and a blurring process on the image data of the non-designated region S2. The sharpening process in this case is performed by increasing the number of pixels per unit area by the interpolation process of the pixels in the designated region S1 and enhancing the outline of the image in the designated region S1. The blurring process is performed by thinning out pixels by filtering in the non-designated area S2.

At the time of this image data processing, in step S3 of the flowchart of FIG. 4, the CPU 1 determines whether the effect level set from the keyboard 10 is one processing or two processings. When the determination is made, the process proceeds to step S4, where the image processing unit 6 performs the sharpening process once on the image data in the designated area S1, and then proceeds to step S5, where the image processing unit 6 , For the image data of the non-designated area S2,
The blurring process is performed once and the process ends.

On the other hand, if it is determined in step S3 that the effect level is two times, the process proceeds to step S6, where the image processing unit 6 performs the sharpening process twice on the image data without the designated area S1. Implemented, then step S
In step 7, the image processing unit 6 performs the blurring processing twice on the image data of the non-designated area S2, and ends the processing.

In this manner, when the storage command is input by operating the keyboard 10, the data of the photographed image for which the image data processing has been completed is read out from the video card 12 and shown by the HDD 15 operated by the IDE 14. Stored on a hard disk or FDC16
Is stored on a floppy disk (not shown) by the FDD 17 operated by the user.

In the digital camera 19 used in the present embodiment, a lens having a focal length of 50 mm is used as a standard lens. In this case, the angle of view is 46 °, but as shown in FIG. , Focal length is 85mm, 135
mm, 300 mm, and 500 mm lenses can be exchangeably mounted, and when these lenses are used,
When the captured image D to be processed is displayed on the monitor 13, an angle-of-view area corresponding to the angle of view of the used lens is displayed around the center. Therefore, the operator can confirm the angle of view area and appropriately perform the processing of the photographed image such as the zoom processing and the above-described image data processing.

As described above, according to the present embodiment, the photographed image captured from the digital camera 19 is displayed on the monitor 13, and the designated region S1 is displayed on the displayed photographed image D by using the mouse 21. Set and keyboard 1
When the image data processing command is input by operating 0, C
The image processing unit 6 is operated by the instruction of PU1, and for the pixels in the designated area S1, the number of pixels per unit area is increased by the pixel interpolation processing, and the contour enhancement of the image in the designated area S1 is performed. Is performed a set number of times, and for the non-designated region S2, the blurring process by thinning out pixels by filtering is performed a set number of times. On the other hand, it is possible to provide a high-quality telephoto effect similar to silver halide photography. Further, according to the present embodiment, when the lens is replaced, the angle of view area corresponding to the focal length is changed to the monitor 1.
3 is displayed on the captured image, so that it is possible to appropriately perform the captured image processing such as zoom processing and image data processing.

In the embodiment described above, the mouse 21 is used for the photographed image D displayed on the monitor 13.
Has described the case where one designated elliptical closed curve L is drawn and the designated area S1 is set, but the present invention is not limited to this embodiment. May be drawn in an arbitrary number to set the designated area S1.

[0024]

According to the first aspect of the present invention, the designated area is set by the designated area setting means for the image of the image data fetched from the outside, and the effect level setting means sets the designated area by the designated area setting means. The effect level of the image data processing to be applied to the set image area is set, and the image data processing means performs the sharpening processing of the effect level set by the effect level setting means on the designated area, and the image area outside the designated area Is subjected to the effect level blurring processing set by the effect level setting means, so that a high-quality telephoto effect similar to a silver halide photograph can be easily applied to an image of image data taken in from the outside. It becomes possible.

According to the second aspect of the present invention, the designated area is set by the designated area setting means for the image of the image data fetched from outside, and further set by the designated area setting means by the effect level setting means. The number of times of image data processing to be applied to the specified image area is set, and the image data processing means performs the sharpening processing of the number of times set by the effect level setting means on the designated area, and the effect level is set on the image area outside the designated area. Since the blurring process is performed the number of times set by the setting unit, it is possible to easily give a high-quality telephoto effect similar to a silver halide photograph to an image of image data taken from outside. .

[Brief description of the drawings]

FIG. 1 is a block diagram showing a configuration of an embodiment of the present invention.

FIG. 2 is a block diagram illustrating a configuration of a digital camera that transfers image data to the embodiment.

FIG. 3 is an explanatory diagram of a designated area setting according to the embodiment;

FIG. 4 is a flowchart showing an operation of the embodiment.

FIG. 5 is an explanatory diagram showing a relationship between a focal length of a lens and an angle of view of a digital camera that transfers image data to the embodiment.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... CPU, 2 ... memory, 3 ... chip set, 6 ... image processing part, 7 ... DMA controller, 10 ... keyboard,
12 video card, 13 monitor, 18 input / output circuit, 19 digital camera, 21 mouse, 22 C
CD, 28: microprocessor, 30: color LC
D, 31 ... operation unit.

Claims (2)

[Claims] 1. An image data processing apparatus for performing image processing on an image of image data taken from outside so as to give a telephoto effect, comprising: A designated area setting means for setting an area; an effect level setting means for setting an effect level of image data processing applied to the image area set by the designated area setting means; and an effect level set in the designated area by the effect level setting means. Image data processing means for performing a sharpening process of the effect level, and performing a blurring process of the effect level set by the effect level setting means on an image area outside the designated area. Data processing device. 2. The image data processing apparatus according to claim 1, wherein said effect level is the number of times of processing by said image data processing means.