CN108616687B - A photographing method, device and mobile terminal - Google Patents

Abstract

The invention discloses a photographing method, device and mobile terminal. The method includes: after receiving a photographing instruction, identifying a target area in a photographing area; determining a light metering point in the target area to perform light metering, and photographing a photograph Obtain a first image; determine the light metering point in a non-target area for photometry, and take a photo to obtain a second image, where the brightness difference between the target area and the non-target area is greater than a set threshold; The image of the target area in one image and the image of the non-target area in the second image are spliced and synthesized to obtain a third image as a photo. In the third image obtained by splicing, the images of the target area and the non-target area are separately metered, which can ensure that the brightness of the photo is normal, and there will be no overexposure or overdarkness. Compared with the prior art In terms of improving the quality of the photos.

Description

A photographing method, device and mobile terminal

technical field

The present invention relates to the field of communications/terminals, and in particular, to a photographing method, device and mobile terminal.

Background technique

With the popularization of digital products, more and more digital devices have the function of taking pictures. In some photographing scenes, there are often both strong light areas and weak light areas within the framing range.

When taking metered photos based on the low-light area, the metering algorithm will try to make the brightness of the objects in the low-light area reach a normal level, while the high-light area may be overexposed, so that it is impossible to distinguish the brightness of the photos in the high-light area. Details, the resulting photos are not of high quality.

SUMMARY OF THE INVENTION

The embodiment of the present invention provides a photographing method, so as to solve the problem that the photograph obtained by the existing photographing method may have an over-explosion phenomenon.

In order to solve the above-mentioned technical problems, the present invention is achieved in this way:

In a first aspect, a photographing method is provided, the method comprising:

After receiving the photographing instruction, identify the target area in the photographing area;

Determine the light metering point to perform light metering in the target area, and take a photo to obtain a first image;

Determine the light metering point to perform light metering in the non-target area, and take a photo to obtain a second image, where the brightness difference between the target area and the non-target area is greater than a set threshold;

The image of the target area in the first image and the image of the non-target area in the second image are spliced and synthesized to obtain a third image as a photo.

In a second aspect, a terminal device is provided, and the terminal device includes:

The identification module, after receiving the photographing instruction, identifies the target area in the photographing area;

The first photographing module determines the light metering point to perform light metering in the target area, and takes a photo to obtain a first image;

The second photographing module determines the light metering point in a non-target area for photometry, and takes a photo to obtain a second image, where the brightness difference between the target area and the non-target area is greater than a set threshold;

The synthesis module splices and synthesizes the image of the target area in the first image and the image of the non-target area in the second image to obtain a third image as a photo.

In a third aspect, a terminal device is provided, the terminal device includes a processor, a memory, and a computer program stored on the memory and executable on the processor, when the computer program is executed by the processor The steps of implementing the method as described in the first aspect.

In a fourth aspect, a computer-readable storage medium is provided, wherein a computer program is stored on the computer-readable storage medium, and when the computer program is executed by a processor, the steps of the method according to the first aspect are implemented .

In the embodiment of the present invention, by performing photometry on the distribution of the target area and the non-target area in the shooting area and taking a photo, in the third image obtained by splicing, the images of the target area and the non-target area have been metered respectively. , which can ensure that the brightness of the photo is normal, and the phenomenon of overexposure and darkness will not appear. Compared with the prior art, the quality of the photo is improved.

Description of drawings

The accompanying drawings described herein are used to provide further understanding of the present invention and constitute a part of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the attached image:

1 is a first schematic flow chart of a photographing method provided by an embodiment of the present invention;

2 is a second schematic flowchart of a photographing method provided by an embodiment of the present invention;

3 is a first structural schematic diagram of a photographing device provided by an embodiment of the present invention;

FIG. 4 is a schematic structural diagram of a mobile terminal according to an embodiment of the present invention.

Detailed ways

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, but not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

In some photographing scenes, there are often both strong light areas and weak light areas within the framing range. When taking pictures, the default focus point and metering point are often located in the center of the picture or a specific area, so when taking a photo based on a low-light area, the background part will be overexposed, resulting in inability to distinguish details in the photo.

For example, when taking a selfie, if the background light is strong, the brightness of the portrait area will be much lower than the brightness of the background area. If you take a photo based on the portrait area, the brightness of the portrait area will be normal, but the brightness of the background area will be displayed. Too high will result in overexposure.

When taking a photo based on a strong light area, the weak light area will be displayed too dark, and the photos cannot be distinguished when displayed.

In one or more embodiments of this specification, after receiving the photographing instruction, the target area in the photographing area may be identified, the light metering point may be determined in the target area for light metering, and a photo may be taken to obtain a first image; then The light metering point is determined to perform light metering in the non-target area, and a photo is taken to obtain a second image; and then the image of the target area in the first image and the image of the non-target area in the second image are spliced and synthesized to obtain The third image serves as a photo. In this way, both the target area and the non-target area of the obtained photo can obtain a photo in which both the target area and the non-target area are clear.

For ease of description, in one or more embodiments of the present specification, the execution body of the photographing method may be a terminal device having a photographing function, such as a smart phone, a tablet computer, a digital camera, and the like. In addition, the execution body of the method may also be the software itself that controls the camera to take pictures. Hereinafter, the implementation of the method will be introduced by taking the execution subject as the camera as an example. It can be understood that the execution subject of the method is a camera, which is only an exemplary description, and should not be construed as a limitation of the method.

In one or more embodiments of this specification, a schematic diagram of the implementation flow of the photographing method is shown in FIG. 1 , including the following steps:

Step S100: after receiving the photographing instruction, identify the target area in the photographing area;

The photographing instruction can be used to control the camera to take pictures. For example, the photographing instruction can be triggered by the user pressing the shutter button of the camera, or in an intelligent terminal device, the photographing instruction can also be the user clicking the preset photographing button in the human-computer interaction interface. triggered. This manual does not specifically limit the triggering form of the photographing instruction.

The shooting area may be the viewing area of the camera, and generally the shooting area may be fed back to the user in real time in the form of a preview image.

The target area may be the area where the target object is located in the shooting area, and the target area may be determined according to the target object. In a specific implementation, the characteristics of the target can be predetermined, so that the area where the target is located in the shooting area, that is, the target area, can be identified according to the characteristics of the target. During specific implementation, the characteristics of the target can be preset, so that the region where the target is located can be identified according to the characteristics of the target during shooting.

When identifying the area where the target is located according to the characteristics of the target, a preview image of the shooting area can be obtained first, and then image recognition is performed on the preview image, that is, the target in the preview image can be identified according to the characteristics of the target. If the target image is identified, the area where the target image is located can be used as the target area.

In one embodiment, the target object may be a person, and the target area is the area where the portrait is located. Then, when identifying the target area, the identification may be based on the characteristics of the portrait. Specifically, during recognition, a preview image of the shooting area can be obtained first, and then based on the preset portrait characteristics, image recognition is performed in the preview image. If a portrait is recognized in the preview image, the area where the portrait is located is used as the target area. .

For example, in the Selfie mode of the camera, since the target object to be photographed is often a person, the target area in the Selfie mode can be preset as the area where the portrait is located. In this way, when taking pictures, you can identify the area where the portrait is located.

If the target area is identified in the photographing area, go to step S102, otherwise continue to identify whether there is a target area in the photographing area.

Step S102: determine the light metering point to perform light metering in the target area, and take a photo to obtain a first image;

When the metering point is determined at a certain position for metering, the optical parameters when taking pictures will be adjusted to make the brightness of the metering position reach a certain preset value. The preset value is often the value that makes the metering area display normal. , preset by the developer. The so-called display is normal, generally under the naked eye observation, the image brightness is neither too high to cause overexposure, nor too dark to cause the image to be unclear.

Then, when the light metering point is determined in the target area for light metering, the brightness of the target area will be displayed normally, and in the first image captured at this time, the brightness of the target area will be displayed normally.

Step S104: determining the light metering point in the non-target area to perform light metering, and taking a photo to obtain a second image;

The non-target area includes the area other than the target area in the shooting area, that is to say, when metering is performed in the non-target area, you can perform light metering and take pictures in a part of the area other than the target area in the shooting area, such as measuring outside the target area. meter and take a photo at a location in the target area, or you can meter and take a photo of a distribution of multiple locations outside the target area.

The brightness difference between the target area and the non-target area can be greater than the set threshold. In this way, by metering the target area and the non-target area respectively, it can ensure that the images of the target area and the non-target area can be displayed normally without appearing too much. overexposed or too dark phenomenon. The specific value of the set threshold here may be preset by the developer, which is not specifically limited in this embodiment. In general, if the brightness difference is greater than the set threshold, when taking pictures based on the target area, the non-target area will be overexposed, and if the brightness difference is not greater than the set threshold, the non-target area will not be overexposed. Overexposure occurs.

In one embodiment, the light metering point may be determined at a certain position of the non-target area, and then light metering is performed for the position and a photo is taken to obtain the second image. When the light metering point is determined in the non-target area for light metering, the brightness of the non-target area will be displayed normally, and in the second image captured at this time, the brightness of the non-target area will be displayed normally.

Of course, the brightness of the non-target area may not be uniform, so the light metering can be performed on different positions of the non-target area respectively. In one embodiment, the light metering points may be determined at different positions of the non-target area, and then light metering is performed for each position and a photo is taken to obtain each second sub-image taken under each light metering point, and then Each second sub-image is synthesized to obtain a second image. In this way, the second image is also obtained by performing light metering for multiple points, which improves the photo quality of the second image.

It should be noted that if the non-target area is subjected to multiple metering and multiple photos are taken, the multiple photos taken can be called the second sub-image, and the image obtained by combining the second sub-images is called the second sub-image. image. In this way, the image obtained by performing photometry on the non-target area may be referred to as the second image for convenience of reference in subsequent descriptions. Terms such as "first", "second" and "sub" used in the present invention can be used to distinguish different things to clearly illustrate the core idea of the present invention, and should not be construed as an absolute limitation of the present invention.

When synthesizing the plurality of obtained second sub-images, the pixel average value of the pixels at the same position in the plurality of second sub-images may be determined. In practical applications, the pixel value of each pixel of the same coordinates in the multiple second sub-images can be determined, and then the average value of these pixel values can be obtained to obtain the pixel average value. In this way, the pixel point at each position can be obtained. pixel average of .

Then, the pixel value of the pixel at the first position in the second image may be set as the pixel average value of the pixel at the first position in the second sub-image. In one embodiment, the pixel value of the pixel at each position in the second image may be set to the average value of the pixels at the same position calculated above.

By taking the average value of the pixels, the overall brightness of the second region in the second image can be more uniform, and some places are not too bright or some places are too dark, so that the overall effect of the image is better.

In one embodiment, the target area is a portrait area, and when metering and taking a photo of a non-target area, light metering and taking a photo may be performed at a first position of the non-target area, where the first position is located at the upper left outside the portrait area You can also meter and take a photo at the second position of the non-target area, which is located in the upper right corner outside the portrait area. The execution sequence of performing light metering and photographing at the first position and the second position is not limited here.

Because when a person is photographed, the background area is generally located at the upper left corner and the upper right corner of the portrait. Moreover, the upper left corner and upper right corner of the portrait are often the areas where high-brightness light sources such as lights and the sun are located. Then, by metering the upper left corner and upper right corner respectively, the background in the portrait scene can be better metered. Makes the background photo obtained in the portrait scene clearer.

In specific implementation, the specific position of the first position in the image may be that the distance between the vertical position and the lowest point of the portrait area is 3/4 of the height of the portrait, and the horizontal position is the distance between the right edge of the portrait area and the right edge of the image at the vertical position. center point between. The specific position of the second position in the image may be that the distance between the vertical position and the lowest point of the portrait area is 3/4 of the height of the portrait, and the horizontal position is the center point between the left edge of the portrait area and the left edge of the image at the vertical position.

Step S106 : splicing and synthesizing the image of the target area in the first image and the image of the non-target area in the second image to obtain a third image as a photo.

Based on the above steps, a first image with normal brightness in the target area and a second image with normal brightness in the non-target area can be obtained. Then, the image of the target area in the first image and the image of the non-target area in the second image can be stitched together Combined, a third image is obtained as a photo.

In one embodiment, the image of the target area in the first image may be extracted, and then the extracted image of the target area may be overlaid on the target area in the second image to obtain the third image. In this way, the image of the target area in the third image is an image with normal brightness, and the image of the non-target area is also an image with normal brightness.

In one embodiment, since the target area has been identified in step S100, the target area and non-target area in the first image can be segmented according to the target area identified in step S100 to obtain an image of the target area .

In another embodiment, considering that the target area identified in step S100 may deviate from the target area in the first image obtained by subsequent shooting, when extracting the image of the target area, the characteristics of the image to be identified may be The target area is identified in the first image, and then the target area and the non-target area in the first image are segmented to obtain an image of the target area.

In this way, after the image of the target area is obtained, the image of the target area and the image of the non-target area in the second image can be spliced and synthesized. The final image of the target area of the third image and the image of the non-target area are separately metered, which can ensure that the brightness of the photo is normal, and there will be no overexposure or overdarkness. Compared with the prior art In terms of improving the quality of the photos.

It should be noted that, in this application, in the first image, second sub-image, second image and other images obtained after photometry, the size of the images is the same size by default, so that subsequent segmentation and merging can be performed. If different, the image can be aligned first. In addition, the difference between the framing range of each image can be as small as possible, so the time interval when taking pictures can be as short as possible, to avoid jitter and other external reasons that cause the difference between the multiple photos taken. The viewing range is quite different.

Based on the above-mentioned inventive concept of the present application, in order to facilitate a better understanding of the technical features, means and effects of the present application, the photographing method in one or more embodiments of the present specification will be further described below. For the concepts not introduced below, please refer to The relevant descriptions in the preceding paragraphs.

The photographing method in one or more embodiments of this specification can be applied to a portrait photographing scene, such as a self-portrait scene. In the portrait photographing scene, the target area is the area where the portrait is located. In the portrait photography scene, photography and synthesis can be realized based on the portrait segmentation technology. The schematic diagram of the implementation process of the specific photography method is shown in Figure 2, including the following steps:

Step S201: receiving a photographing instruction;

Step S202: identifying whether there is a portrait in the shooting area;

For the specific identification method, refer to the relevant description in step S100, which is not repeated here. If a portrait is identified in the shooting area, then go to step S203, otherwise, continue to identify whether there is a portrait in the shooting area.

Step S203: if a portrait is identified in the shooting area, the metering point is determined in the area where the portrait is located for metering, and a photo is taken to obtain a photo A;

Specifically, the metering point can be determined at the center of the portrait for metering.

Step S204: Measure light at the upper left corner and the upper right corner outside the portrait area respectively and take a photo to obtain a photo B and a photo C;

Step S205: mixing photos B and C to obtain a new photo D;

In one embodiment, the specific mixing method includes: calculating the pixel average value of the pixels at the same position in the photo B and the photo C, and then using the pixel average value as the pixel value of the pixel at the same position in the photo D.

For example, in the RGB color mode, you can find the average value of R, the average value of G, and the average value of B in each pixel:

Among them, the pixel value of a certain pixel in the photo B can be expressed as (R ₁ , G ₁ , B ₁ ), and the pixel value of the pixel at the same position as the pixel in the photo C can be expressed as (R ₂ , G ₂ , B ₂ ), and finally the pixel value of the pixel at this position in the photo D can be expressed as (R, G, B). Through this method, the pixel value of the pixel at each position in the photo D can be obtained.

Step S206: obtaining the portrait in the photo A through portrait segmentation;

That is, the image data of the portrait area in the photo A is acquired.

Step S207: Covering the portrait in photo A to photo D to obtain photo E.

The photo E is stored as the photo responding to the photographing instruction in step S201.

In the final photo E, the portrait area (foreground) and the area outside the portrait area (background) are metered separately, which can ensure the normal brightness of the photo, and effectively avoid the background image being overexposed in the backlight environment by metering only the foreground. There is no problem that the foreground is too dark, and the quality of the photo is improved compared with the prior art.

The above-mentioned photographing method provided by the embodiment of the present application, based on the same idea, the embodiment of the present application also provides a corresponding photographing device, as shown in FIG. 3 , the device specifically includes:

The identification module 301, after receiving the photographing instruction, identifies the target area in the photographing area;

The first photographing module 302 determines the light metering point to perform light metering in the target area, and takes a photo to obtain a first image;

The second photographing module 303 determines the light metering point in a non-target area to perform light metering, and takes a photo to obtain a second image;

The synthesis module 304 splices and combines the image of the target area in the first image and the image of the non-target area in the second image to obtain a third image as a photo.

In one embodiment, the second shooting module 303 is specifically used for:

Determine the light metering points at different positions of the non-target area, perform light metering and take pictures for each position respectively, and obtain each second sub-image taken under each light metering point;

Combining each of the second sub-images to obtain the second image.

In one embodiment, the second shooting module 303 is specifically used for:

determining a pixel average value of a plurality of pixel points at the same position of the second sub-images;

The pixel value of the pixel at the first position in the second image is set as the pixel average value of the pixel at the first position in the second sub-image.

In one embodiment, the target area is a portrait area, and the second shooting module 303 is specifically used for:

Perform light metering and take a photo at a first position of the non-target area, the first position being located at the upper left corner outside the portrait area;

A photo is metered and photographed at a second location of the non-target area, the second location being located in the upper right corner outside the portrait area.

In one embodiment, the target area is a portrait area, and the identifying module 301 is specifically used for:

obtaining a preview image of the shooting area;

Perform image recognition on the preview image based on the portrait feature;

If a portrait is recognized in the preview image, the area where the portrait is located is taken as the target area.

In one embodiment, the synthesis module 304 is specifically used for:

extracting the image of the target area in the first image;

Covering the extracted image of the target area on the target area in the second image to obtain a third image.

The photographing apparatus provided by the embodiment of the present invention can implement each process implemented by the terminal device in the method embodiments of FIG. 1 to FIG. 2 , and to avoid repetition, details are not described here. In the photographing device provided by the present invention, by measuring the distribution of the target area and the non-target area in the photographing area and taking pictures, in the third image obtained by splicing in this way, the images of the target area and the non-target area are respectively subjected to photometry , which can ensure that the brightness of the photo is normal, and the phenomenon of overexposure and darkness will not appear. Compared with the prior art, the quality of the photo is improved.

FIG. 4 is a schematic diagram of the hardware structure of a mobile terminal for implementing various embodiments of the present invention. The mobile terminal 100 includes but is not limited to: a radio frequency unit 101, a network module 102, an audio output unit 103, an input unit 104, a sensor 105, and a display unit 106 , the user input unit 107 , the interface unit 108 , the memory 109 , the processor 110 , and the power supply 111 and other components. Those skilled in the art can understand that the structure of the mobile terminal shown in FIG. 4 does not constitute a limitation on the mobile terminal, and the mobile terminal may include more or less components than the one shown, or combine some components, or different components layout. In this embodiment of the present invention, the mobile terminal includes, but is not limited to, a mobile phone, a tablet computer, a notebook computer, a palmtop computer, a vehicle-mounted terminal, a wearable device, a pedometer, and the like.

The processor 110 is configured to identify the target area in the photographing area after receiving the photographing instruction;

Determine the light metering point to perform light metering in the target area, and take a photo to obtain a first image;

Determine the metering point for metering in the non-target area, and take a photo to obtain a second image;

splicing and synthesizing the image of the target area in the first image and the image of the non-target area in the second image to obtain a third image as a photo;

By metering the distribution of the target area and the non-target area in the shooting area and taking a photo, in the third image obtained by splicing, the images in the target area and the non-target area have been metered respectively, which can ensure the normal brightness of the photo. There is no overexposure phenomenon and no overdark phenomenon. Compared with the prior art, the quality of the photo is improved.

It should be understood that, in this embodiment of the present invention, the radio frequency unit 101 may be used for receiving and sending signals during sending and receiving of information or during a call. Specifically, after receiving the downlink data from the base station, it is processed by the processor 110; The uplink data is sent to the base station. Generally, the radio frequency unit 101 includes, but is not limited to, an antenna, at least one amplifier, a transceiver, a coupler, a low noise amplifier, a duplexer, and the like. In addition, the radio frequency unit 101 can also communicate with the network and other devices through a wireless communication system.

The mobile terminal provides the user with wireless broadband Internet access through the network module 102, such as helping the user to send and receive emails, browse web pages, and access streaming media.

The audio output unit 103 may convert audio data received by the radio frequency unit 101 or the network module 102 or stored in the memory 109 into audio signals and output as sound. Also, the audio output unit 103 may also provide audio output related to a specific function performed by the mobile terminal 100 (eg, call signal reception sound, message reception sound, etc.). The audio output unit 103 includes a speaker, a buzzer, a receiver, and the like.

The input unit 104 is used to receive audio or video signals. The input unit 104 may include a graphics processor (Graphics Processing Unit, GPU) 1041 and a microphone 1042. The graphics processor 1041 captures images of still pictures or videos obtained by an image capture device (such as a camera) in a video capture mode or an image capture mode data is processed. The processed image frames may be displayed on the display unit 106 . The image frames processed by the graphics processor 1041 may be stored in the memory 109 (or other storage medium) or transmitted via the radio frequency unit 101 or the network module 102 . The microphone 1042 can receive sound and can process such sound into audio data. The processed audio data can be converted into a format that can be transmitted to a mobile communication base station via the radio frequency unit 101 for output in the case of a telephone call mode.

The mobile terminal 100 also includes at least one sensor 105, such as a light sensor, a motion sensor, and other sensors. Specifically, the light sensor includes an ambient light sensor and a proximity sensor, wherein the ambient light sensor can adjust the brightness of the display panel 1061 according to the brightness of the ambient light, and the proximity sensor can close the display panel 1061 and the display panel 1061 when the mobile terminal 100 is moved to the ear. / or backlight. As a kind of motion sensor, the accelerometer sensor can detect the magnitude of acceleration in all directions (usually three axes), and can detect the magnitude and direction of gravity when stationary, and can be used to identify the posture of mobile terminals (such as horizontal and vertical screen switching, related games , magnetometer attitude calibration), vibration recognition related functions (such as pedometer, tapping), etc.; the sensor 105 may also include a fingerprint sensor, a pressure sensor, an iris sensor, a molecular sensor, a gyroscope, a barometer, a hygrometer, a thermometer, Infrared sensors, etc., are not repeated here.

The display unit 106 is used to display information input by the user or information provided to the user. The display unit 106 may include a display panel 1061, and the display panel 1061 may be configured in the form of a Liquid Crystal Display (LCD), an Organic Light-Emitting Diode (OLED), or the like.

The user input unit 107 may be used to receive input numerical or character information, and generate key signal input related to user settings and function control of the mobile terminal. Specifically, the user input unit 107 includes a touch panel 1071 and other input devices 1072 . The touch panel 1071, also referred to as a touch screen, can collect the user's touch operations on or near it (such as the user's finger, stylus, etc., any suitable object or attachment on or near the touch panel 1071). operate). The touch panel 1071 may include two parts, a touch detection device and a touch controller. Among them, the touch detection device detects the user's touch orientation, detects the signal brought by the touch operation, and transmits the signal to the touch controller; the touch controller receives the touch information from the touch detection device, converts it into contact coordinates, and then sends it to the touch controller. To the processor 110, the command sent by the processor 110 is received and executed. In addition, the touch panel 1071 can be implemented in various types such as resistive, capacitive, infrared, and surface acoustic waves. In addition to the touch panel 1071 , the user input unit 107 may also include other input devices 1072 . Specifically, other input devices 1072 may include, but are not limited to, physical keyboards, function keys (such as volume control keys, switch keys, etc.), trackballs, mice, and operation sticks, which are not described herein again.

Further, the touch panel 1071 can be covered on the display panel 1061. When the touch panel 1071 detects a touch operation on or near it, it transmits it to the processor 110 to determine the type of the touch event, and then the processor 110 determines the type of the touch event according to the touch The type of event provides corresponding visual output on display panel 1061 . Although in FIG. 4 , the touch panel 1071 and the display panel 1061 are used as two independent components to realize the input and output functions of the mobile terminal, but in some embodiments, the touch panel 1071 and the display panel 1061 may be integrated The input and output functions of the mobile terminal are implemented, which is not specifically limited here.

The interface unit 108 is an interface for connecting an external device to the mobile terminal 100 . For example, external devices may include wired or wireless headset ports, external power (or battery charger) ports, wired or wireless data ports, memory card ports, ports for connecting devices with identification modules, audio input/output (I/O) ports, video I/O ports, headphone ports, and more. The interface unit 108 may be used to receive input (eg, data information, power, etc.) from an external device and transmit the received input to one or more elements within the mobile terminal 100 or may be used between the mobile terminal 100 and the external Transfer data between devices.

The memory 109 may be used to store software programs as well as various data. The memory 109 may mainly include a stored program area and a stored data area, wherein the stored program area may store an operating system, an application program (such as a sound playback function, an image playback function, etc.) required for at least one function, and the like; Data created by the use of the mobile phone (such as audio data, phone book, etc.), etc. Additionally, memory 109 may include high-speed random access memory, and may also include non-volatile memory, such as at least one magnetic disk storage device, flash memory device, or other volatile solid state storage device.

The processor 110 is the control center of the mobile terminal, uses various interfaces and lines to connect various parts of the entire mobile terminal, runs or executes the software programs and/or modules stored in the memory 109, and calls the data stored in the memory 109. , perform various functions of the mobile terminal and process data, so as to monitor the mobile terminal as a whole. The processor 110 may include one or more processing units; preferably, the processor 110 may integrate an application processor and a modem processor, wherein the application processor mainly processes the operating system, user interface, and application programs, etc., and the modem The processor mainly handles wireless communication. It can be understood that, the above-mentioned modulation and demodulation processor may not be integrated into the processor 110 .

The mobile terminal 100 may also include a power supply 111 (such as a battery) for supplying power to various components. Preferably, the power supply 111 may be logically connected to the processor 110 through a power management system, so as to manage charging, discharging, and power consumption management through the power management system and other functions.

In addition, the mobile terminal 100 includes some functional modules not shown, which will not be repeated here.

Preferably, an embodiment of the present invention also provides a mobile terminal, including a processor 110 , a memory 109 , a computer program stored in the memory 109 and running on the processor 110 , when the computer program is executed by the processor 110 Various processes of the above embodiments of the photographing method are implemented, and the same technical effect can be achieved. To avoid repetition, details are not repeated here.

Embodiments of the present invention further provide a computer-readable storage medium, where a computer program is stored on the computer-readable storage medium. When the computer program is executed by a processor, each process of the above-mentioned embodiments of the photographing method can be realized, and the same technical effect can be achieved. , in order to avoid repetition, it will not be repeated here. The computer-readable storage medium is, for example, a read-only memory (Read-Only Memory, ROM), a random access memory (Random Access Memory, RAM), a magnetic disk, or an optical disk.

It should be noted that, herein, the terms "comprising", "comprising" or any other variation thereof are intended to encompass non-exclusive inclusion, such that a process, method, article or device comprising a series of elements includes not only those elements, It also includes other elements not expressly listed or inherent to such a process, method, article or apparatus. Without further limitation, an element qualified by the phrase "comprising a..." does not preclude the presence of additional identical elements in a process, method, article or apparatus that includes the element.

From the description of the above embodiments, those skilled in the art can clearly understand that the method of the above embodiment can be implemented by means of software plus a necessary general hardware platform, and of course can also be implemented by hardware, but in many cases the former is better implementation. Based on this understanding, the technical solutions of the present invention can be embodied in the form of software products in essence or the parts that make contributions to the prior art, and the computer software products are stored in a storage medium (such as ROM/RAM, magnetic disk, CD), including several instructions to make a terminal (which may be a mobile phone, a computer, a server, an air conditioner, or a network device, etc.) execute the methods described in the various embodiments of the present invention.

The embodiments of the present invention have been described above in conjunction with the accompanying drawings, but the present invention is not limited to the above-mentioned specific embodiments, which are merely illustrative rather than restrictive. Under the inspiration of the present invention, without departing from the spirit of the present invention and the scope protected by the claims, many forms can be made, which all belong to the protection of the present invention.

Claims (8)

1. a photographing method, is characterized in that, comprises: After receiving the photographing instruction, identify the target area in the photographing area, the target area is the area where the target object is located in the photographing area, and is identified according to the characteristics of the target object; Determine the light metering point to perform light metering in the target area, and take a photo to obtain a first image; Determine the light metering point to perform light metering in the non-target area, and take a photo to obtain a second image, where the brightness difference between the target area and the non-target area is greater than a set threshold; splicing and synthesizing the image of the target area in the first image and the image of the non-target area in the second image to obtain a third image as a photo; Wherein, determining the light metering point to perform light metering in a non-target area, and taking a photo to obtain a second image, specifically includes: Determine the light metering points at different positions of the non-target area, perform light metering and take pictures for each position respectively, and obtain each second sub-image taken under each light metering point; Combining each of the second sub-images to obtain the second image. 2. The method according to claim 1, characterized in that, if the target area is a portrait area, then, determining the light metering points at different positions of the non-target area, and performing light metering and Take a photo, and obtain each second sub-image taken under each metering point, which specifically includes: Perform light metering and take a photo at a first position of the non-target area, the first position being located at the upper left corner outside the portrait area; A photo is metered and photographed at a second location of the non-target area, the second location being located in the upper right corner outside the portrait area. 3. The method according to claim 1, wherein synthesizing each of the second sub-images to obtain the second image, specifically comprising: determining a pixel average value of a plurality of pixel points at the same position of the second sub-images; The pixel value of the pixel at the first position in the second image is set as the pixel average value of the pixel at the first position in the second sub-image. 4. The method according to any one of claims 1-3, wherein, if the target area is a portrait area, the identifying the target area in the shooting area specifically includes: obtaining a preview image of the shooting area; Perform image recognition on the preview image based on the portrait feature; If a portrait is recognized in the preview image, the area where the portrait is located is taken as the target area. 5. The method of claim 1, wherein the image of the target area in the first image and the image outside the target area in the second image are spliced and merged to obtain a third image, which specifically includes : extracting the image of the target area in the first image; Covering the extracted image of the target area on the target area in the second image to obtain a third image. 6. A photographing device, characterized in that, comprising: The identification module, after receiving the photographing instruction, identifies the target area in the photographing area, and the target area is the area where the target object is located in the photographing area, and is identified according to the characteristics of the target object; The first photographing module determines the light metering point to perform light metering in the target area, and takes a photo to obtain a first image; The second photographing module determines the light metering point in a non-target area for photometry, and takes a photo to obtain a second image, where the difference in brightness between the target area and the non-target area is greater than a set threshold; wherein, the Determining the light metering point in a non-target area to perform light metering, and taking a photo to obtain a second image, which specifically includes: determining the light metering point in different positions of the non-target area, performing light metering for each position respectively, and taking a photo , obtain each second sub-image captured under each metering point; synthesize each of the second sub-images to obtain the second image; The synthesis module splices and synthesizes the image of the target area in the first image and the image of the non-target area in the second image to obtain a third image as a photo. 7. The apparatus according to claim 6, wherein the second photographing module is specifically used for: determining a pixel average value of a plurality of pixel points at the same position of the second sub-images; The pixel value of the pixel at the first position in the second image is set as the pixel average value of the pixel at the first position in the second sub-image. 8. A mobile terminal, characterized in that it comprises: a memory, a processor and a computer program stored on the memory and running on the processor, the computer program being executed by the processor to achieve: The steps of the method of any one of claims 1 to 5.

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