WO2020038109A1

WO2020038109A1 - Photographing method and device, terminal, and computer-readable storage medium

Info

Publication number: WO2020038109A1
Application number: PCT/CN2019/093682
Authority: WO
Inventors: 张光辉
Original assignee: Oppo广东移动通信有限公司
Priority date: 2018-08-22
Filing date: 2019-06-28
Publication date: 2020-02-27
Also published as: CN108777767A

Abstract

The present application pertains to the technical field of photographing, and specifically relates to a photographing method and device, a terminal, and a computer-readable storage medium. The method comprises: receiving a camera startup instruction; detecting, according to the camera startup instruction, whether a terminal is in a preset motion state; and if it is detected that the terminal is in the preset motion state, controlling a camera to perform autofocusing, acquiring a successfully focused photographing frame image, and outputting indication information indicating that photography is complete. The present invention eliminates, in a photographing process, the need for a user to trigger a photographing instruction to perform photographing, and immediately acquires, upon completion of focusing, a successfully focused frame image to complete photographing. In addition, when the terminal completes the photographing, the indication information indicating that photography is complete is further output, such that the user is rapidly notified that the terminal has completed the photographing, thereby effectively preventing the case of acquiring a blurred photograph as a resutl of the user changing a motion state of the terminal before the terminal has completed photographing, and improving the efficiency of photographing.

Description

Photographing method, device, terminal and computer-readable storage medium

Technical field

The present application belongs to the field of photographing technology, and particularly relates to a photographing method, device, terminal, and computer-readable storage medium.

Background technique

Currently, in order to implement a photographing function, a terminal such as a mobile phone generally needs to perform a photograph preview first, and select a photographing scene to be photographed during the photographing preview, and then focus the photographic object in the photographing scene, and then trigger a photographing instruction to generate a photograph.

Summary of the Invention

The embodiments of the present application provide a photographing method, a device, a terminal, and a computer-readable storage medium, which can solve the technical problem that the terminal cannot quickly take clear photos.

A first aspect of the embodiments of the present application provides a photographing method, including:

Receiving camera startup instructions;

Detecting whether the terminal is in a preset motion state according to the camera startup instruction;

If it is detected that the terminal is in a preset motion state, the camera is controlled to perform auto-focusing, acquire a photographed frame image that is successfully focused, and output a prompt message to complete the photographing.

A second aspect of the embodiments of the present application provides a photographing device, including:

A receiving unit for receiving a camera start instruction;

A detection unit, configured to detect whether the terminal is in a preset motion state according to the camera startup instruction;

The photographing unit is configured to control the camera to perform auto-focusing if it is detected that the terminal is in a preset motion state, acquire a photographed frame image that is successfully focused, and output a prompt message to complete photographing.

A third aspect of the embodiments of the present application provides a terminal including a memory, a processor, and a computer program stored in the memory and executable on the processor. When the processor executes the computer program, the following steps are implemented:

Receiving camera startup instructions;

A fourth aspect of the embodiments of the present application provides a computer-readable storage medium. The computer-readable storage medium stores a computer program, and the computer program is executed by a processor to implement the steps of the foregoing method.

BRIEF DESCRIPTION OF THE DRAWINGS

In order to explain the technical solution of the embodiments of the present application more clearly, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present application, so It should be regarded as a limitation on the scope. For those of ordinary skill in the art, other related drawings can be obtained based on these drawings without paying creative work.

FIG. 1 is a schematic flowchart of an implementation of a photographing method according to an embodiment of the present application;

FIG. 2 is a schematic flowchart of a specific implementation of controlling a camera to perform autofocus according to an embodiment of the present application; FIG.

FIG. 3 is a schematic diagram of acquiring position information of a target photographing object according to an embodiment of the present application; FIG.

FIG. 4 is a schematic flowchart of a specific implementation of obtaining a photographed frame image that is successfully focused according to an embodiment of the present application; FIG.

5 is a schematic structural diagram of a photographing device according to an embodiment of the present application;

FIG. 6 is a schematic structural diagram of a terminal according to an embodiment of the present application.

detailed description

In order to make the purpose, technical solution, and advantages of the present application clearer, the present application is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the application, and are not used to limit the application. Meanwhile, in the description of the present application, the terms “first”, “second”, and the like are only used to distinguish descriptions, and cannot be understood to indicate or imply relative importance.

It should be understood that when used in this specification and the appended claims, the term "comprising" indicates the presence of described features, integers, steps, operations, elements and / or components, but does not exclude one or more other features , The whole, steps, operations, elements, components, and / or their presence or addition.

It should also be understood that the terminology used in the description of this application is for the purpose of describing particular embodiments only and is not intended to limit the application. As used in this specification and the appended claims, the singular forms "a", "an" and "the" are intended to include the plural forms unless the context clearly indicates otherwise.

It should be further understood that the term "and / or" used in the specification of the application and the appended claims refers to any combination of one or more of the items listed in association and all possible combinations, and includes these combinations .

As used in this specification and the appended claims, the term "if" can be construed as "when" or "once" or "in response to a determination" or "in response to a detection" depending on the context . Similarly, the phrase "if determined" or "if [the described condition or event] is detected" can be interpreted, depending on the context, to mean "once determined" or "in response to the determination" or "once [the condition or event described ] "Or" In response to [Description of condition or event] detected ".

In order to explain the above-mentioned technical solution of the present application, specific embodiments are used for description below.

In this process, when the user wants to quickly complete the photographing action, it may be necessary to trigger the photographing instruction immediately after focusing, and quickly retract the mobile phone to take a picture. However, at this time, the mobile phone may be retracted too quickly, resulting in The photos taken are blurry, and fast and clear photos cannot be achieved.

For example, during a training class, the user wants to quickly capture the content of the courseware displayed on the screen without affecting himself or others. At this time, the user needs to click the camera button immediately after focusing, and quickly take back the phone to take a picture, but This may cause the photos to be taken too quickly because the phone is retracted too fast, and it is not possible to quickly take clear photos.

In the embodiment of the present application, whether the terminal is in a preset motion state is detected according to the received camera start instruction, and when it is detected that the terminal is in the preset motion state, the camera is controlled to perform autofocus, and a photograph frame that is successfully focused is obtained. Image, complete the photo, and output a prompt message to complete the photo. That is to say, this application does not need to take a picture after the user triggers a photographing instruction. Instead, after the focus is completed, the photograph frame image that has been successfully focused is obtained at the first time to complete the picture, and when the terminal completes the picture, the output is completed. The prompt information for taking pictures allows users to know that the terminal has finished taking photos in a timely manner, which effectively avoids the user from changing the motion state of the terminal when the terminal has not taken photos, resulting in blurring of the photo shooting, enabling the terminal to quickly take clear pictures. Photo, which improves the efficiency of photo shooting.

FIG. 1 shows a schematic flowchart of a photographing method according to an embodiment of the present application. This method is applied to a terminal and can be executed by a photographing device configured on the terminal. It is applicable to a situation where the efficiency of photographing needs to be improved, including steps 101 to Step 103.

The terminal includes a terminal device equipped with a photographing device, such as a smart phone, a tablet computer, and a learning machine. The terminal device may be installed with applications such as a photographing application, a browser, and WeChat.

In step 101, a camera start instruction is received.

In the embodiment of the present application, the above camera startup instruction includes a camera startup instruction triggered by a user clicking a photographing application icon on a system desktop, a camera startup instruction triggered by a user clicking a physical button, a camera startup instruction triggered by a user through a voice, or other methods. Camera start instruction.

In step 102, it is detected whether the terminal is in a preset motion state according to the camera startup instruction.

The preset motion state refers to a state where the terminal is located at a shooting position and is relatively stationary.

Optionally, in some embodiments of the present application, the detecting whether the terminal is in a preset motion state according to the camera startup instruction includes: detecting whether the displacement of the terminal in the three directions of the X axis, Y axis, and Z axis is less than the first A preset threshold, if it is detected that the displacement of the terminal in the three directions of the X axis, Y axis, and Z axis is less than the first preset threshold, it is confirmed that the terminal is in a preset motion state.

For example, the gyroscope or accelerometer on the terminal is used to detect the displacement of the terminal in the three directions of X, Y, and Z. If it is detected that the displacement of the terminal in X, Y, or Z is greater than Or equal to the first preset threshold, it means that the terminal has not moved to the optimal shooting position, that is, the user is still moving the terminal to find the best shooting position that the user thinks; if it is detected that the terminal is on the X axis, Y If the displacement in the three directions of the axis or the Z axis is less than the first preset threshold, it means that the terminal is already at the optimal shooting position and can enter the focus state before shooting.

The first preset threshold may be set according to practical experience. For example, the first preset threshold may be set to 1 mm to 3 mm.

In step 103, if it is detected that the terminal is in a preset motion state, the camera is controlled to perform autofocus to obtain a photographed frame image that is successfully focused, and output a prompt message to complete the photographing.

Among them, choosing an appropriate focal length for photo shooting is an important prerequisite to ensure clear photos. The above-mentioned photographing frame image refers to a frame image generated by the camera by collecting an external light signal according to a photographing instruction, and the photographing frame image is used to generate a final photo.

In the embodiment of the present application, when it is detected that the terminal is in a preset motion state, the camera is immediately controlled to perform autofocus and acquire a successfully captured photo frame image. At the same time, a reminder message is output to remind the user that the photo has been taken, so that the user It can quickly finish taking photos and obtain clear photos; effectively avoids the user's changing the motion state of the terminal when the terminal has not finished taking pictures, resulting in blurry photo shooting problems, enabling the terminal to quickly take clear photos, improving The efficiency of photo shooting.

As an embodiment of the present application, as shown in FIG. 2, controlling the camera to perform autofocus in step 103 includes steps 201 to 202.

Step 201: Identify a target shooting object included in the current preview frame image, and obtain position information of the target shooting object.

Wherein, the preview frame image refers to a frame image generated by the camera collecting an external light signal when the photographing application is in a preview state. The data output by the camera every time it collects external light signals is called frame data. After the user starts the camera application on the terminal, it enters the preview mode. The terminal obtains the preview frame image by acquiring the frame data collected by the camera and displaying it.

Generally, the frame data is collected at a frequency of 30 frames per second, and is generally divided into a preview frame and a photographing frame, which are used for previewing and photographing respectively.

In the embodiment of the present application, in a preview state, a preview frame image is acquired in real time, and a target photographic object included in the preview frame image is detected, so as to obtain position information of the target photographic object.

Specifically, the above-mentioned target photographing object refers to the object currently being photographed. For example, when the current photographing belongs to a person, the target photographing object is a person, and when the current building photographing, the target photographing object is a building. It should be noted that the above-mentioned target photographing object may be a photographic object occupying the largest area in the preview frame image.

In some implementations of the present application, the above-mentioned detection of the target photographic object included in the preview frame image includes performing target detection on the preview frame image, realizing pixel-level classification of the foreground and background, removing the background, and retaining one or more Target objects, that is, one or more of the above target photographic objects.

For example, target detection objects are detected through local binary pattern algorithms, directional gradient features combined with support vector machine models, and convolutional neural network models.

Among them, the convolutional neural network model can achieve more accurate and rapid detection of target photographic objects. Therefore, a trained convolutional neural network model can be selected to detect the target photographic objects in the preview frame image.

Before using the trained convolutional neural network model to detect the target shooting object in the preview frame image, a trained convolutional neural network model needs to be obtained first. The trained convolutional neural network model is trained according to each sample image and the detection results corresponding to each sample image, where the detection result corresponding to each sample image is used to indicate all target photographic objects included in the sample image .

Optionally, the training step of the convolutional neural network model may include: obtaining a sample image and a detection result corresponding to the sample image; using the convolutional neural network model to detect the sample image, and adjusting the convolutional neural network model according to the detection result. Parameters until the adjusted convolutional neural network model can detect all the target photographic objects in the sample image, or the accuracy rate of the target photographic objects in the sample image is greater than a preset value, then the adjusted The convolutional neural network model is used as a trained convolutional neural network model.

The parameters of the above convolutional neural network model may include the weight, deviation, and coefficient of the regression function of each convolutional layer in the convolutional neural network model, and may also include the learning rate, the number of iterations, and the number of neurons in each layer. .

It should be noted that, the method for detecting the above-mentioned target photographic object is only given as an example, and is not expressed as a limitation on the protection scope of the present application. Other methods for detecting the object of photographic subject are also applicable to this application. List them one by one.

Step 202: Determine a photometric area and a focal length of the camera according to the position information.

In the embodiment of the present application, after the target shooting object included in the current preview frame image is identified, the position information of the target shooting object can be confirmed. The position information may be the position information of the target photographic object in the current preview frame image, and by obtaining the internal and external parameters of the camera, the position information of the target photographic object in the current preview frame image may be mapped to the target photographic object Location information relative to the terminal in the real environment.

The selection of the metering area is one of the important basis for accurately selecting the shutter and aperture values. The metering system of the camera generally selects the metering area by measuring the brightness of the light reflected from the subject, which is also called reflective metering.

Specifically, the camera generally automatically assumes a reflectance of 18% in the photometric area, and performs photometry through this ratio, and then determines the values of the aperture and shutter.

Under the same lighting conditions, if you want to get the same exposure, the larger the aperture value, the smaller the shutter value, and the smaller the aperture value, the larger the shutter value. The value of 18% is based on the reflection performance of the midtones (gray tones) in natural scenes. If the white tones in the viewfinder are mostly, the reflected light will exceed 18%. If it is a completely white scene, it can reflect about 90%. Incident light, if it is a black scene, the reflectivity may be only a few percent.

The standard gray card is an 8 × 10-inch card. When you place this gray card on the same light source as the subject, the overall reflectance of the light measurement area is 18% of the standard. Then you only need to press the The aperture shutter value is taken, and the photos will be accurately exposed.

If the overall reflectance of the entire metering area is greater than 18%, for example, the background of the metering area is dominated by white. At this time, if you take the aperture shutter value measured by the camera's automatic metering, the photo will be An underexposed photo, the white background will look gray, if it is a white paper, it will become a black paper. Therefore, when shooting a scene with a reflectance greater than 18%, it is necessary to increase the exposure compensation value EV of the camera. Conversely, if you shoot a scene with a reflectance lower than 18%, such as a black background, the photos you take will often be overexposed and the black background will turn gray. Therefore, when shooting scenes with a reflectance below 18%, the EV exposure needs to be reduced.

The current metering methods mainly include central average metering, central partial metering, spot metering, multi-spot metering, and evaluation metering. Among them, the central average photometry is the most commonly used photometry mode. In the embodiment of the present application, the selection of the photometric area is described by using the central average photometry.

Among them, the central average metering mainly considers that ordinary photographers are used to placing the subject, that is, the target object that needs accurate exposure, in the middle of the viewfinder, so this part of the shooting content is the most important. Therefore, the sensory elements responsible for metering will organically separate the overall metering value of the camera. The metering data in the central part occupies most of the proportion, and the metering data outside the center of the screen will assist in metering as a small proportion. . The ratio of the two grid values after weighted average is obtained by the camera processor to obtain the photometric data captured by the camera. For example, the metering of the central part of the camera occupies 75% of the entire metering ratio, and the metering data for other non-central parts that gradually extend to the edge occupy 25%.

It can be seen that the position of the target object needs to be determined, and then the photometric area is selected, for example, the position of the target object is used as the central part of the photometric area.

In addition, the camera focal length is generally selected by the camera emitting a group of infrared rays or other rays, and the distance of the subject is determined after the subject reflects, and then the lens combination is adjusted according to the measured distance to achieve automatic focusing. Therefore, after determining the position of the target object, it is also necessary to obtain the focal length of the photographed frame image.

Optionally, in some embodiments of the present application, in addition to obtaining the position information of the target photographic object in the preview frame image by identifying the target photographic object contained in the current preview frame image, it may also be received by the user in the photo preview interface A triggering selection instruction for a target photographic object included in the preview frame image is used to obtain position information of the target photographic object corresponding to the selection instruction.

For example, as shown in FIG. 3, the user acquires the position information of the target shooting object corresponding to the selected instruction by selecting the target shooting object 32 included in the preview frame image 31 triggered on the photo preview interface, that is, by The user directly selects the target photographic object to be focused, instead of acquiring it by identifying the current preview frame image, so that the selection of the target photographic object is more accurate.

Optionally, as shown in FIG. 4, the above-mentioned obtaining the photographed frame image with successful focusing includes: step 401 to step 402.

Step 401: Calculate a difference between a pixel value of a feature point of a current preview frame image and a pixel value of a feature point at a corresponding position of a previous preview frame image.

The feature point of the current preview frame image refers to a pixel point at a preset position in the current preview frame image, for example, a pixel point located at the center position of the current preview frame image, or a contour edge of a target photographed object in the current preview frame image. Of pixels.

In step 402, if the difference is smaller than the second preset threshold, the current preview frame image is used as the photographed frame image with successful focusing.

When the difference between the pixel value of the feature point of the current preview frame image and the pixel value of the feature point at the corresponding position of the previous preview frame image is less than the above-mentioned second preset threshold, it indicates that the focusing of the photographed object has been completed, and the current The preview frame image is used as the photo frame image.

Optionally, in the embodiment described above, before detecting whether the terminal is in a preset motion state according to the camera startup instruction, it includes detecting whether the camera's photographing mode is a preset photographing mode. If it is detected that the camera's photographing mode does not belong to the preset If a photographing mode is set, after receiving a photographing instruction, acquisition of a photographing frame image is performed.

In the embodiment of the present application, the foregoing preset photographing mode refers to a mode for instructing the terminal to perform quick photographing.

Specifically, detecting whether the photographing mode of the camera is the preset photographing mode includes: reading the camera photographing mode parameters stored in the register, and determining whether the photographing mode of the camera is the preset photographing mode according to the camera photographing mode parameters.

For example, after reading the camera shooting mode parameter stored in the register, determine whether the camera shooting mode parameter is a preset parameter. If the camera shooting mode parameter is a preset parameter and is a preset parameter, determine that the camera's shooting mode is a preset photo. Mode; if the camera shooting mode parameter is not a preset parameter, determine that the camera's shooting mode is not a preset shooting mode.

Optionally, the output of the prompt information for completing the photographing includes: playing an animation for prompting the completion of photographing; or changing the background color displayed on the current display interface of the terminal.

During the process of the terminal automatically focusing and acquiring the photographed frame image after the focusing is successful, the user does not know whether the terminal has successfully taken a picture, so that the user changes the motion state of the terminal without the terminal successfully taking a picture, resulting in a photograph taken Blurred.

Therefore, it is necessary to output the prompt information for completing the photo, so that the user can know in time that the terminal has completed the photo shooting, which effectively avoids the user's changing the motion state of the terminal when the terminal has not completed the photo taking, which leads to the blurring of the photo shooting. Remind the user that the photo has been taken, so that the user can retract the terminal at the fastest speed, and at the same time take a clear picture, which improves the photo shooting efficiency.

The changing the background color displayed on the current display interface of the terminal may refer to a photo preview interface that changes the current color preview interface of the terminal to a black and white color, or a photo preview interface with a mask of another color attached.

In addition, in some embodiments of the present application, the above-mentioned prompt information for completing the photographing may include: displaying the obtained successfully-focused photo frame image on a small picture control of the photo preview interface, so as to remind the user that the photo with successful focus is successfully acquired Frame image, the small picture control is a control that needs to be triggered when the user views the terminal album, that is, the small picture control is used to display the terminal's album when triggered.

FIG. 5 shows a schematic structural diagram of a photographing apparatus 500 according to an embodiment of the present application, including a receiving unit 501, a detection unit 502, and a photographing unit 503.

The receiving unit 501 is configured to receive a camera startup instruction.

The detecting unit 502 is configured to detect whether the terminal is in a preset motion state according to the camera startup instruction.

The photographing unit 503 is configured to control the camera to perform auto-focusing if it is detected that the terminal is in a preset motion state, obtain a photographed frame image that is successfully focused, and output a prompt message to complete photographing.

In some embodiments of the present application, the detection unit is specifically configured to detect whether the displacement of the terminal in the three directions of the X-axis, Y-axis, and Z-axis is less than a first preset threshold. If it is detected that the terminal is in the X-axis, If the displacements in the three directions of the Y axis and the Z axis are smaller than the first preset threshold, it is confirmed that the terminal is in a preset motion state.

In some embodiments of the present application, the photographing unit is specifically configured to identify a target photographic object included in the current preview frame image, and obtain position information of the target photographic object; determine the photometric area and focal length of the camera according to the position information. .

Optionally, the photographing unit is further specifically configured to receive a selection instruction of the target photographic object included in the preview frame image triggered by the user on the photographic preview interface, and obtain position information of the target photographic object corresponding to the selection instruction.

Optionally, the photographing unit is further specifically configured to calculate a difference between a pixel value of a feature point of the current preview frame image and a pixel value of a feature point at a corresponding position of the previous preview frame image; if the difference is less than the second preset Threshold, the current preview frame image is taken as the photographed frame image with successful focus.

In some embodiments of the present application, the detection unit is further specifically configured to detect whether the camera's photographing mode is a preset photographing mode according to the camera activation instruction before detecting whether the terminal is in a preset motion state according to the camera activation instruction, If it is detected that the photographing mode of the camera does not belong to the preset photographing mode, after receiving a photographing instruction, acquiring a photographing frame image.

In some embodiments of the present application, the detection unit is further specifically configured to read a camera shooting mode parameter stored in a register, and determine whether the camera shooting mode is a preset shooting mode according to the camera shooting mode parameter.

In some embodiments of the present application, the above-mentioned photographing unit is further specifically configured to play an animation for prompting completion of photographing after acquiring a photographed frame image of successful focusing; or change the background color displayed on the current display interface of the terminal.

In some embodiments of the present application, the above-mentioned photographing unit is further specifically configured to display the acquired successfully-focused photographic frame image in a small picture control of the photographic preview interface after acquiring the successfully-focused photographic frame image; the small picture The control is used to display the terminal's photo album when triggered.

It should be noted that, for the convenience and brevity of the description, the specific working process of the photographing device 500 described above may refer to the corresponding process of the method described in FIG. 1 to FIG. 4, and is not repeated here.

As shown in FIG. 6, this application provides a terminal for implementing the foregoing photographing method. The terminal may be a mobile terminal. The mobile terminal may be a terminal such as a smart phone, a tablet computer, a personal computer (PC), or a learning machine. : One or more input devices 63 (only one is shown in FIG. 6) and one or more output devices 64 (only one is shown in FIG. 6). The processor 61, the memory 62, the input device 63, the output device 64, and the camera 65 are connected through a bus 66. The camera is used for generating a preview frame image and a photographing frame image according to the collected external light signals.

It should be understood that, in the embodiment of the present application, the processor 61 may be a central processing unit (CPU), and the processor may also be another general-purpose processor or a digital signal processor (DSP). , Application Specific Integrated Circuit (ASIC), Field-Programmable Gate Array (FPGA) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. A general-purpose processor may be a microprocessor or the processor may be any conventional processor or the like.

The input device 63 may include a virtual keyboard, a touchpad, a fingerprint sensor (for collecting fingerprint information and orientation information of a user), a microphone, and the like, and the output device 64 may include a display, a speaker, and the like.

The memory 62 may include a read-only memory and a random access memory, and provide instructions and data to the processor 61. A part or all of the memory 62 may further include a non-volatile random access memory. For example, the memory 62 may also store information of a device type.

The memory 62 stores a computer program that can be run on the processor 61. For example, the computer program is a program of a photographing method. When the processor 61 executes the computer program, the steps in the embodiment of the photographing method are implemented, for example, steps 101 to 103 shown in FIG. 1. Alternatively, when the processor 61 executes the computer program, the functions of the modules / units in the foregoing device embodiments are implemented, for example, the functions of the units 501 to 503 shown in FIG. 5.

The computer program may be divided into one or more modules / units. The one or more modules / units are stored in the memory 62 and executed by the processor 61 to complete the present application. The one or more modules / units may be a series of computer program instruction segments capable of performing specific functions, and the instruction segments are used to describe the execution process of the computer program in the terminal for taking pictures. For example, the above computer program can be divided into a receiving unit, a detecting unit, and a photographing unit. The specific functions of each unit are as follows: the receiving unit is used to receive a camera startup instruction; and the detection unit is used to detect whether the terminal is in a preset according to the camera startup instruction. Motion state; a photographing unit, configured to control the camera to automatically focus if it detects that the terminal is in a preset motion state, acquire a photographed frame image that has been successfully focused, and output a prompt message to complete the photographing.

Those skilled in the art can clearly understand that, for the convenience and brevity of the description, only the above-mentioned division of functional units and modules is used as an example. In practical applications, the above functions can be allocated by different functional units according to needs. Module completion, that is, dividing the internal structure of the above device into different functional units or modules to complete all or part of the functions described above. Each functional unit and module in the embodiment may be integrated into one processing unit, or each unit may exist separately physically, or two or more units may be integrated into one unit. The integrated unit may be hardware. It can be implemented in the form of software functional units. In addition, the specific names of the functional units and modules are only for the convenience of distinguishing from each other, and are not used to limit the protection scope of the present application. For specific working processes of the units and modules in the foregoing system, reference may be made to corresponding processes in the foregoing method embodiments, and details are not described herein again.

In the above embodiments, the description of each embodiment has its own emphasis. For a part that is not detailed or recorded in an embodiment, reference may be made to related descriptions of other embodiments.

Those of ordinary skill in the art may realize that the units and algorithm steps of each example described in connection with the embodiments disclosed herein can be implemented by electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the technical solution. Professional technicians can use different methods to implement the described functions for each specific application, but such implementation should not be considered to be beyond the scope of this application.

In the embodiments provided in this application, it should be understood that the disclosed devices / terminals and methods may be implemented in other ways. For example, the device / terminal embodiments described above are only schematic. For example, the division of the above modules or units is only a logical function division. In actual implementation, there may be another division manner, such as multiple units or components. It can be combined or integrated into another system, or some features can be ignored or not implemented. In addition, the displayed or discussed mutual coupling or direct coupling or communication connection may be indirect coupling or communication connection through some interfaces, devices or units, which may be electrical, mechanical or other forms.

The units described above as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, which may be located in one place, or may be distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the objective of the solution of this embodiment.

In addition, each functional unit in each embodiment of the present application may be integrated into one processing unit, or each of the units may exist separately physically, or two or more units may be integrated into one unit. The above integrated unit may be implemented in the form of hardware or in the form of software functional unit.

When the above integrated modules / units are implemented in the form of software functional units and sold or used as independent products, they can be stored in a computer-readable storage medium. Based on this understanding, this application implements all or part of the processes in the methods of the above embodiments, and can also be completed by a computer program instructing related hardware. The above computer program can be stored in a computer-readable storage medium. The computer program When executed by a processor, the steps of the foregoing method embodiments may be implemented. The computer program includes computer program code, and the computer program code may be in a source code form, an object code form, an executable file, or some intermediate form. The computer-readable medium may include: any entity or device capable of carrying the computer program code, a recording medium, a U disk, a mobile hard disk, a magnetic disk, an optical disk, a computer memory, a read-only memory (ROM), a random access memory Random Access Memory (RAM), electric carrier signals, telecommunication signals, and software distribution media. It should be noted that the content contained in the above computer-readable medium can be appropriately increased or decreased according to the requirements of legislation and patent practice in jurisdictions. For example, in some jurisdictions, computer-readable media do not Including electric carrier signals and telecommunication signals.

The above embodiments are only used to describe the technical solution of the present application, but are not limited thereto. Although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that they can still apply the foregoing embodiments. The recorded technical solutions are modified, or some of the technical features are equivalently replaced; and these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present application, and should be included in the present invention Within the scope of the application.

Claims

A photographing method, comprising:

Receiving camera startup instructions;

Detecting whether the terminal is in a preset motion state according to the camera startup instruction;

If it is detected that the terminal is in a preset motion state, the camera is controlled to perform auto-focusing, acquire a photographed frame image that is successfully focused, and output a prompt message to complete the photographing.
The photographing method according to claim 1, wherein the detecting whether the terminal is in a preset motion state according to the camera startup instruction comprises:

Detecting whether the displacement of the terminal in the three directions of the X axis, the Y axis, and the Z axis is less than the first preset threshold; if it is detected that the displacement of the terminal in the three directions of the X axis, Y axis, and Z axis is less than the first preset threshold A preset threshold confirms that the terminal is in a preset motion state.
The photographing method according to claim 1 or 2, wherein the controlling the camera to perform autofocusing comprises:

Identifying a target photographic object included in the current preview frame image, and acquiring position information of the target photographic object;

A photometric area and a focal length of the camera are determined according to the position information.
The photographing method according to claim 3, wherein the identifying the target photographic object included in the current preview frame image and obtaining the position information of the target photographic object comprises:

Receive a selection instruction of a target photographic object included in the preview frame image triggered by a user on a photo preview interface, and obtain position information of the target photographic object corresponding to the selection instruction.
The photographing method according to claim 1, wherein the acquiring a photographed frame image with successful focusing comprises:

Calculating the difference between the pixel value of the feature point of the current preview frame image and the pixel value of the feature point at the corresponding position of the previous preview frame image;

If the difference is less than the second preset threshold, the current preview frame image is used as the photographed frame image with successful focus.
The photographing method according to claim 1, before detecting whether the terminal is in a preset motion state according to the camera startup instruction, comprising:

Detect whether the camera's photographing mode is a preset photographing mode according to the camera startup instruction. If it is detected that the photographing mode of the camera does not belong to the preset photographing mode, after receiving the photographing instruction, acquire a photographing frame image.
The photographing method according to claim 6, wherein the detecting whether the photographing mode of the camera is a preset photographing mode comprises:

Read the camera shooting mode parameters stored in the register, and determine whether the camera's shooting mode is a preset shooting mode according to the camera shooting mode parameters.
The photographing method according to claim 1, wherein the outputting of the prompt information for completing photographing comprises:

Play an animation that reminds you that the photo has been taken; or,

Change the background color displayed on the terminal's current display interface.
The photographing method according to claim 1, wherein the outputting of the prompt information for completing photographing comprises:

The obtained successfully-focused photo frame image is displayed in a small picture control of the photo preview interface; the small picture control is used to display a photo album of the terminal when triggered.
A photographing device, comprising:

A receiving unit for receiving a camera start instruction;

A detection unit, configured to detect whether the terminal is in a preset motion state according to the camera startup instruction;

The photographing unit is configured to control the camera to perform auto-focusing if it is detected that the terminal is in a preset motion state, acquire a photographed frame image that is successfully focused, and output a prompt message to complete photographing.
A terminal includes a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor implements the following steps when the computer program is executed:

Receiving camera startup instructions;

Detecting whether the terminal is in a preset motion state according to the camera startup instruction;

If it is detected that the terminal is in a preset motion state, the camera is controlled to perform auto-focusing, acquire a photographed frame image that is successfully focused, and output a prompt message to complete the photographing.
The terminal according to claim 11, wherein when the processor executes the computer program, the following steps are further implemented:

Detecting whether the displacement of the terminal in the three directions of the X axis, the Y axis, and the Z axis is less than the first preset threshold; if it is detected that the displacement of the terminal in the three directions of the X axis, Y axis, and Z axis is less than the first preset threshold A preset threshold confirms that the terminal is in a preset motion state.
The terminal according to claim 11 or 12, wherein when the processor executes the computer program, the following steps are further implemented:

Identifying a target photographic object included in the current preview frame image, and acquiring position information of the target photographic object;

A photometric area and a focal length of the camera are determined according to the position information.
The terminal according to claim 13, wherein, when the processor executes the computer program, the following steps are further implemented:

Receive a selection instruction of a target photographic object included in the preview frame image triggered by a user on a photo preview interface, and obtain position information of the target photographic object corresponding to the selection instruction.
The terminal according to claim 11, wherein when the processor executes the computer program, the following steps are further implemented:

Calculating the difference between the pixel value of the feature point of the current preview frame image and the pixel value of the feature point at the corresponding position of the previous preview frame image;

If the difference is less than the second preset threshold, the current preview frame image is used as the photographed frame image with successful focus.
The terminal according to claim 11, wherein when the processor executes the computer program, the following steps are further implemented:

Before detecting whether the terminal is in a preset motion state according to the camera startup instruction, it is detected whether the camera's photographing mode is a preset photographing mode according to the camera startup instruction. After receiving a photographing instruction, acquiring a photographing frame image.
The terminal according to claim 16, wherein when the processor executes the computer program, the following steps are further implemented:

Read the camera shooting mode parameters stored in the register, and determine whether the camera's shooting mode is a preset shooting mode according to the camera shooting mode parameters.
The terminal according to claim 11, wherein when the processor executes the computer program, the following steps are further implemented:

Play an animation that reminds you that the photo has been taken; or,

Change the background color displayed on the terminal's current display interface.
The terminal according to claim 11, wherein when the processor executes the computer program, the following steps are further implemented:

The obtained successfully-focused photo frame image is displayed in a small picture control of the photo preview interface; the small picture control is used to display a photo album of the terminal when triggered.
A computer-readable storage medium storing a computer program, wherein when the computer program is executed by a processor, the steps of the method according to any one of claims 1 to 9 are implemented.