CN105744172A - Photographing method and device and mobile terminal - Google Patents

Abstract

The invention discloses a photographing method, a photographing device and a mobile terminal, wherein the photographing method comprises the following steps: acquiring a user gesture in the air; determining a photographing exposure parameter adjusting instruction according to the user gesture; and generating a photographing image according to the photographing exposure parameter adjusting instruction. The photographing apparatus includes: the gesture acquisition module is used for acquiring user gestures in an air space; the command determining module is used for determining a photographing exposure parameter adjusting command according to the user gesture; and the image generation module is used for generating a photographing image according to the photographing exposure parameter adjusting instruction. The method and the device simplify the control operation of the exposure parameters during photographing and improve the user experience.

Description

A photographing method, device and mobile terminal

technical field

Embodiments of the present invention relate to the technical field of photographing, and in particular, to a photographing method, device, and mobile terminal.

Background technique

At present, the camera has become the standard configuration of most mobile terminals. With the continuous improvement of the performance of the camera, the camera function in the mobile terminal is also becoming more and more powerful, which brings convenience to users who like to take pictures.

Many mobile terminal users like to use the front camera on the mobile terminal to take selfies. When taking a selfie with the front camera of a mobile terminal, sometimes it feels that it is not bright enough or a bit overexposed. At this time, exposure adjustment is required. Although many mobile terminals have the function of manually adjusting the brightness, it is necessary to enter the corresponding photo mode. It is very inconvenient to manually adjust the drag bar on the interface and affect the user experience.

Contents of the invention

The present invention provides a photographing method, device and mobile terminal to achieve the purpose of conveniently adjusting exposure.

In a first aspect, an embodiment of the present invention provides a method for taking pictures, including:

Obtain user gestures from a distance;

determining an exposure parameter adjustment instruction for photographing according to the user gesture;

A photographed image is generated according to the photographing exposure parameter adjustment instruction.

In the second aspect, the embodiment of the present invention also provides a photographing device, including:

The gesture acquisition module is used to acquire user gestures in the air;

An instruction determination module, configured to determine an exposure parameter adjustment instruction for photographing according to the user gesture;

An image generation module, configured to generate a photographed image according to the photographing exposure parameter adjustment instruction.

In a third aspect, an embodiment of the present invention further provides a mobile terminal, including the photographing device described in the second aspect.

The present invention obtains user gestures, determines the camera exposure parameter adjustment instruction corresponding to the user gesture, and then generates a camera image according to the determined camera exposure parameter adjustment instructions, so the user does not need to manually input exposure parameters or adjust the parameters on the interface when taking pictures. The drag bar on the interface is used to adjust the exposure, which simplifies the control operation of the exposure parameters when taking pictures, and improves the user experience.

Description of drawings

FIG. 1 is a schematic flow chart of a photographing method provided in Embodiment 1 of the present invention;

FIG. 2 is a schematic flow chart of a photographing method provided in Embodiment 2 of the present invention;

FIG. 3 is a schematic structural diagram of a photographing device provided in Embodiment 3 of the present invention;

FIG. 4 is a schematic structural diagram of a mobile terminal provided by Embodiment 4 of the present invention.

detailed description

The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, but not to limit the present invention. In addition, it should be noted that, for the convenience of description, only some structures related to the present invention are shown in the drawings but not all structures.

Embodiment one

FIG. 1 is a schematic flowchart of a photographing method provided by Embodiment 1 of the present invention. The method can be executed by a photographing device, wherein the device can be implemented by software and/or hardware, and can generally be integrated into a mobile terminal. As shown in Figure 1, the method includes:

S110. Acquiring user gestures from a distance.

Exemplarily, the mobile terminal in this embodiment may specifically be a terminal device equipped with a display screen and a camera, such as a mobile phone, a tablet computer, and a digital camera. The camera includes a front camera and/or a rear camera. This embodiment is preferably applicable to the situation where the front camera is used to take pictures. After the user turns on the camera function, the user's gestures are obtained from the air. The acquisition of the user's gesture may be acquired by using a camera and/or an infrared sensor. The specific method for acquiring the user's gesture through the image collected by the camera has various calculation implementation methods, which are not limited in this embodiment. The combination of camera and infrared sensor can improve the accuracy of gesture acquisition. Obtain user gesture images through the camera, and analyze and obtain user gestures from them. The infrared sensor emits infrared rays and collects the infrared rays reflected by the user's hand to obtain information on changes in the infrared intensity value, thereby determining the user's gesture, or finally determine the user's gesture based on the obtained infrared intensity value and the image collected by the camera.

S120. Determine a photographing exposure parameter adjustment instruction according to the user gesture.

The user gesture recognized in operation S110 is compared with the predefined gestures in the preset gesture library, and a matching predefined gesture is acquired. In this embodiment, a preset gesture library is established in advance, and a plurality of predefined gestures are set in the preset gesture library, and each predefined gesture corresponds to a camera exposure parameter adjustment instruction. A mapping relationship table between predefined gestures and photographing exposure parameter adjustment instructions may also be set, and the mapping relationship table includes the mapping relationship between predefined gestures and photographing exposure parameter adjustment instructions. After identifying and confirming the user gesture in operation S110, it is judged whether the recognized user gesture is a predefined gesture in the preset gesture library, and if so, determine the photographing corresponding to the user gesture according to the mapping relationship table between the predefined gesture and the photographing exposure parameter adjustment command Exposure parameter adjustment instructions.

S130. Generate a photographed image according to the photographing exposure parameter adjustment instruction.

Wherein, the photographing exposure parameter adjustment instruction includes: an exposure time adjustment instruction and/or an exposure gain adjustment instruction. Exposure time and exposure gain are important parameters that affect the effect of shooting images. The longer the exposure time, the brighter the brightness of the captured image and the higher the contrast; conversely, the shorter the exposure time, the lower the brightness of the captured image and the lower the contrast. The higher the exposure gain, the brighter the captured image and the higher the contrast; the lower the exposure gain, the lower the brightness of the captured image and the lower the contrast.

If the user finds that the captured image is too dark or too bright through the camera preview image, he can adjust the exposure time and/or exposure gain by making a corresponding gesture to achieve the desired brightness of the captured image.

The embodiment of the present invention adjusts the camera exposure parameter adjustment command by acquiring user gestures, and then generates the camera image according to the camera exposure parameter adjustment command, and realizes the effect of adjusting the camera exposure parameter in the air. Compared with pulling down the drag bar and manually inputting the exposure parameters for photographing, the photographing method provided by the embodiment of the present invention avoids the manual adjustment operation on the display screen interface back and forth, which is especially convenient for users to take selfies, and simplifies the control operation of the photographing exposure parameter adjustment. Improved user experience.

On the basis of the above-mentioned embodiments, preferably, operation S120 determines the camera exposure parameter adjustment instruction according to the user gesture, which can be specifically implemented through the following methods:

The camera exposure parameter adjustment instruction is determined according to the number of fingers corresponding to the user gesture.

Since the accuracy of recognizing user gestures through cameras and/or infrared sensors is not very high at present, there are certain errors, which may easily cause misoperations. Especially relative to more complex gestures, the error is even greater. In this preferred manner, by acquiring the number of fingers corresponding to the user's gesture, and then determining the camera exposure parameter adjustment instruction according to the number of fingers corresponding to the user's gesture, the accuracy of gesture recognition can be significantly improved.

Exemplarily, if the number of fingers corresponding to the user gesture is 1, the exposure parameter adjustment instruction corresponding to the gesture is to reduce the exposure time by 20%; if the number of fingers corresponding to the user gesture is 2, the corresponding The exposure parameter adjustment instruction is to reduce the exposure time by 10%; if the number of fingers corresponding to the user gesture is 3, the exposure parameter adjustment instruction corresponding to the gesture is to increase the exposure time by 10%; if the number of fingers corresponding to the user gesture is When there are 4 fingers, the exposure parameter adjustment instruction corresponding to the gesture is to increase the exposure time by 20%; if the number of fingers corresponding to the user gesture is 5, the exposure parameter adjustment instruction corresponding to the gesture is to increase the exposure time by 30%. If the user finds that the captured image is dark through the image previewed in the camera image, he can make a gesture with three fingers. At this time, the corresponding camera exposure parameter adjustment command is to increase the exposure time by 10%, and the camera device increases the current exposure time by 10%. %.

Exemplarily, the above example is an adjustment percentage of the exposure time. In other implementation manners, a specific value of the exposure time, or an adjustment percentage of the exposure gain, or a specific value of the exposure gain can also be specifically set.

In order to avoid misoperation, preferably, the gesture recognition function is activated after the gesture recognition photographing instruction is acquired. Then perform air acquisition of user gestures. Specifically, for example, a gesture recognition camera button may be provided on the user interface. After the user presses the gesture recognition camera button, the user gesture is acquired according to the above-mentioned embodiment, and the photographing exposure parameter adjustment instruction is determined according to the user gesture, and then the photographing image is generated according to the photographing exposure parameter adjustment instruction. If the user does not press the gesture recognition camera button, the camera is taken in the normal camera mode. The normal camera mode means that when adjusting the exposure parameters of the camera, the drag bar on the interface is constantly manually adjusted for operation.

Embodiment two

Fig. 2 is a schematic flow chart of a photographing method provided by Embodiment 2 of the present invention. As shown in Fig. 2, the method includes:

S210. Acquiring user gestures through the air.

S220. Determine an exposure parameter adjustment instruction for photographing according to the user gesture.

S230. Output a confirmation prompt message of an exposure parameter adjustment instruction for photographing.

S240. Generate a photographed image according to the photographing exposure parameter adjustment instruction.

In the embodiment of the present invention, after determining the photographing exposure parameter adjustment command according to the user gesture in S220, and before generating the photographed image according to the photographing exposure parameter adjustment command in S240, a prompt message indicating that the photographing exposure parameter adjustment command has been determined is output. For example, a voice prompt "the camera exposure parameter adjustment command has been confirmed, you can stop placing the gesture", or a text prompt on the interface of the display screen, and then the user can be prompted to put down the gesture, avoiding the user when taking pictures. gestures are also photographed.

In the photographing method provided by the embodiment of the present invention, after the photographing exposure parameter adjustment instruction is determined according to the user gesture, the photographing operation can be performed by itself, and after the photographing exposure parameter adjustment instruction is determined according to the user gesture, according to the photographing exposure parameter adjustment instruction Before generating the photographed image, first judge whether to obtain a photographing instruction input by the user, and if the photographing instruction input by the user is obtained, perform the operation of generating the photographed image according to the photographing exposure parameter adjustment instruction; if the photographing instruction input by the user is not obtained, instruction, return to operation S210 in the above embodiment. The photographing instruction input by the user may be a voice photographing instruction, or a gesture photographing instruction.

Embodiment three

Embodiment 3 of the present invention provides a photographing device. FIG. 3 is a schematic structural diagram of a photographing device provided in Embodiment 3 of the present invention. As shown in FIG. 3 , the photographing device includes:

Gesture acquisition module 21, used to acquire user gestures in space;

An instruction determining module 22, configured to determine an instruction for adjusting photographing exposure parameters according to the user gesture;

The image generation module 23 is configured to generate a photographed image according to the photographing exposure parameter adjustment instruction.

The embodiment of the present invention adjusts the camera exposure parameter adjustment command by acquiring user gestures, and then generates the camera image according to the camera exposure parameter adjustment command, and realizes the effect of adjusting the camera exposure parameter in the air. Compared with pulling down the drag bar and manually inputting the exposure parameters for photographing, the photographing method provided by the embodiment of the present invention avoids the manual adjustment operation on the display screen interface back and forth, which is especially convenient for users to take selfies, and simplifies the control operation of the photographing exposure parameter adjustment. Improved user experience.

On the basis of the foregoing embodiments, optionally, the photographing exposure parameter adjustment instruction includes: an exposure time adjustment instruction and/or an exposure gain adjustment instruction.

Further, the instruction determination module 22 is specifically used for:

The camera exposure parameter adjustment instruction is determined according to the number of fingers corresponding to the user gesture.

Further, the gesture acquisition module 21 is specifically used for:

Capture user gestures through the air through cameras and/or infrared sensors.

Further, the photographing device also includes a prompt module. The prompting module is configured to output prompt information for determining the photographing exposure parameter adjustment command after determining the photographing exposure parameter adjustment command according to the user gesture and before generating the photographing image according to the photographing exposure parameter adjustment command.

The above-mentioned device can execute the method provided by any embodiment of the present invention, and has corresponding functional modules and beneficial effects for executing the method.

Embodiment Four

Embodiment 4 of the present invention provides a mobile terminal. FIG. 4 is a schematic structural diagram of a mobile terminal provided in Embodiment 4 of the present invention. As shown in FIG. 4 , the mobile terminal includes the photographing device 31 described in the foregoing embodiments . It should be noted that the mobile terminal provided in the embodiment of the present invention may further include other circuits and devices for supporting the normal operation of the mobile terminal. The above-mentioned mobile terminal can be a mobile phone, a tablet computer, a digital camera, and the like.

Note that the above are only preferred embodiments of the present invention and applied technical principles. Those skilled in the art will understand that the present invention is not limited to the specific embodiments described herein, and that various obvious changes, readjustments and substitutions can be made by those skilled in the art without departing from the protection scope of the present invention. Therefore, although the present invention has been described in detail through the above embodiments, the present invention is not limited to the above embodiments, and can also include more other equivalent embodiments without departing from the concept of the present invention, and the present invention The scope is determined by the scope of the appended claims.

Claims (11)

1. A method for taking pictures, characterized in that, comprising: Obtain user gestures from a distance; determining an exposure parameter adjustment instruction for photographing according to the user gesture; A photographed image is generated according to the photographing exposure parameter adjustment instruction. 2. The method according to claim 1, wherein the photographing exposure parameter adjustment instruction comprises: an exposure time adjustment instruction and/or an exposure gain adjustment instruction. 3. The method according to claim 1, wherein determining an exposure parameter adjustment instruction for photographing according to the user gesture comprises: The camera exposure parameter adjustment instruction is determined according to the number of fingers corresponding to the user gesture. 4. The method according to claim 1, wherein the acquiring user gestures from a distance comprises: Capture user gestures through the air through cameras and/or infrared sensors. 5. The method according to claim 1, characterized in that, after determining the camera exposure parameter adjustment instruction according to the user gesture, before generating the camera image according to the camera exposure parameter adjustment instruction, further comprising: Outputting a confirmation prompt message of an exposure parameter adjustment instruction for photographing. 6. A photographing device, characterized in that it comprises: The gesture acquisition module is used to acquire user gestures in the air; An instruction determination module, configured to determine an exposure parameter adjustment instruction for photographing according to the user gesture; An image generation module, configured to generate a photographed image according to the photographing exposure parameter adjustment instruction. 7 . The device according to claim 6 , wherein the photographing exposure parameter adjustment instruction comprises: an exposure time adjustment instruction and/or an exposure gain adjustment instruction. 8. The device according to claim 6, wherein the instruction determination module is specifically used for: The camera exposure parameter adjustment instruction is determined according to the number of fingers corresponding to the user gesture. 9. The device according to claim 6, wherein the gesture acquiring module is specifically used for: Capture user gestures through the air through cameras and/or infrared sensors. 10. The device according to claim 6, further comprising: The prompting module is configured to output prompt information for confirming the photographing exposure parameter adjustment command after the photographing exposure parameter adjustment command is determined according to the user gesture and before the photographing image is generated according to the photographing exposure parameter adjustment command. 11. A mobile terminal, comprising the photographing device according to any one of claims 6-10.