WO2019237798A1

WO2019237798A1 - Camera control method, mobile terminal, and computer readable storage medium

Info

Publication number: WO2019237798A1
Application number: PCT/CN2019/081044
Authority: WO
Inventors: 赵国伟; 曾检生; 赖哲锋
Original assignee: 百富计算机技术（深圳）有限公司
Priority date: 2018-06-11
Filing date: 2019-04-02
Publication date: 2019-12-19
Also published as: CN108632533B; CN108632533A

Abstract

The present application is applicable to the technical field of camera control, and provides a camera control method, a mobile terminal, and a computer readable storage medium. The method comprises: after an instruction for starting a camera of a mobile terminal is received, viewing whether preset mark information is opened; if the preset mark information is opened, obtaining a scanning parameter, and based on the scanning parameter, acquiring an image by means of the camera; if the preset mark information is not opened, obtaining a photographing parameter, and based on the photographing parameter, acquiring the image by means of the camera. By means of the present application, accurate scanning and good photographing can be simultaneously satisfied without increasing hardware.

Description

Camera control method, mobile terminal and computer-readable storage medium

Technical field

The present application belongs to the technical field of camera control, and particularly relates to a camera control method, a mobile terminal, and a computer-readable storage medium.

Background technique

The Android platform is the name of a free and open source operating system based on the Linux platform. The platform consists of an operating system, middleware, user interface, and application software. At present, the Android operating system is mainly used in mobile devices, such as mobile phones and POS machines.

The camera application and camera driver provided with the android system are used in the POS machine. However, the camera application and camera driver provided with the android system are aimed at how to improve the photographic effect. The problem of the identification code word. If the photographing parameters in the android system are modified, the identification code word can be recognized but the photographing effect is not good. Therefore, the current mobile terminal based on the android system cannot meet the accuracy without adding hardware. Scan the code, and meet better camera effects.

technical problem

In view of this, embodiments of the present application provide a method for controlling a camera, a mobile terminal, and a computer-readable storage medium, so as to solve the current problem that mobile terminals cannot simultaneously meet the requirements of accurate code scanning and better photography without adding hardware. Question of effectiveness.

Technical solutions

A first aspect of the embodiments of the present application provides a method for controlling a camera, which is applied to a mobile terminal. The control method includes:

After receiving an instruction to start the camera of the mobile terminal, check whether preset flag information is turned on;

If preset flag information is turned on, acquiring code scanning parameters, and acquiring images through the camera based on the code scanning parameters;

If the preset flag information is not turned on, a photographing parameter is acquired, and an image is collected by the camera based on the photographing parameter.

A second aspect of the embodiments of the present application provides a mobile terminal, including:

A confirmation module, configured to check whether preset flag information is turned on after receiving an instruction to start the camera of the mobile terminal;

The code scanning module is configured to obtain code scanning parameters if preset flag information is turned on, and collect images through the camera based on the code scanning parameters;

A photographing module is configured to acquire photographing parameters if preset flag information is not turned on, and collect images through the camera based on the photographing parameters.

A third aspect of the embodiments of the present application provides a mobile 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, Implement the steps of the method provided by the first aspect of the embodiments of the present application.

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 implemented by one or more processors to implement the first embodiment of the present application. Steps of the method provided by aspects.

A fifth aspect of the embodiments of the present application provides a computer program product, where the computer program product includes a computer program, and the computer program is implemented by one or more processors to implement the described in the first aspect of the embodiments of the present application. Method steps.

Beneficial effect

In the embodiment of the present application, after receiving an instruction to start the camera of the mobile terminal, it is checked whether preset flag information is turned on. If the preset flag information is turned on, code scanning parameters are obtained and based on the code scanning parameters. Acquiring images through the camera, and if preset logo information is not turned on, acquiring photographing parameters, and acquiring images through the camera based on the photographing parameters. As the embodiment of the present application sets two sets of parameters, which are the scanning code parameter and the photographing parameter, the preset flag information is used to determine whether the camera is currently activated by the scanning application or the camera activated by the camera application. The image is collected by the camera based on the scan code parameters, and the image is collected by the camera when the photo is taken. In this way, the mobile terminal can be controlled to meet the requirements of accurate code scanning and better photographing effects without adding any hardware.

BRIEF DESCRIPTION OF THE DRAWINGS

In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings used in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings in the following description are only for the present application. For some embodiments, for those of ordinary skill in the art, other drawings may be obtained based on these drawings without paying creative labor.

FIG. 1 is a software design framework provided by an embodiment of the present application; FIG.

2 is a schematic flowchart of a camera control method provided by an embodiment of the present application;

FIG. 3 provides a schematic diagram of enabling or disabling preset flag information according to a code scanning application according to an embodiment of the present application; FIG.

4 is a schematic block diagram of a mobile terminal according to an embodiment of the present application;

FIG. 5 is a schematic block diagram of another mobile terminal according to an embodiment of the present application.

Embodiments of the invention

In the following description, for the purpose of explanation rather than limitation, specific details such as a specific system structure and technology are provided in order to thoroughly understand the embodiments of the present application. However, it should be clear to a person skilled in the art that the present application can also be implemented in other embodiments without these specific details. In other cases, detailed descriptions of well-known systems, devices, circuits, and methods are omitted so as not to obscure the description of the present application with unnecessary details.

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 listed items 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" may 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 technical solution described in this application, the architecture in this application is first described. Most mobile terminals are based on the android system, and the android system only has a camera function and no code scanning function. The parameters set for the camera function are used for scanning. When the code is paid, it often occurs that the collected images do not meet the requirements, the process of scanning the code is slow, or the problem that the code cannot be scanned successfully. As a result, the code scanning page has been kept, and the process of collecting and identifying is repeated.

This application hopes that without adding hardware (a camera is used to scan the code and one is used to take pictures to satisfy both code scanning and photographing, but hardware needs to be added), and the interface of the native android system is not changed (the system can be upgraded without changes It can still be used afterwards), while satisfying fast code scanning and better camera effects.

FIG. 1 is a software design framework provided by an embodiment of the present application. As shown in the figure, the photographing application and the code scanning application belong to the application layer software, and the code scanning application and the photographing application are at the same level, and both can pass through the system JNI interface The camera driver is called, and the camera driver then calls the camera parameters or scan code parameters according to the set conditions. It can be seen from FIG. 1 that the code scanning application does not conflict with the photographing application in the existing system, and does not change the interface settings of the existing android system.

The following description is made through specific embodiments.

FIG. 2 is a schematic flowchart of a camera control method provided by an embodiment of the present application. As shown in the figure, the method may include the following steps:

Step S201: After receiving an instruction to start the camera of the mobile terminal, check whether preset flag information is turned on.

In the embodiment of the present application, the instruction to start the camera of the mobile terminal may be issued by a photographing application or a code scanning application. Whether it is a photographing application or a scanning application, a system-based API interface is required, and a camera driver is called through a JNI interface, so the instruction to start the camera of the mobile terminal is the system-based API interface of the scanning application or photographing application. The JNI interface calls camera-driven instructions. Since both the code scanning application and the camera application are based on the same interface and call the same camera driver, in order to ensure that the code can be quickly scanned when the camera driver is called through the code scanning application, a better result can be obtained when the camera driver is called through the camera application. Photo effects, so we can not change the system's default camera parameters, but set a new set of code scanning parameters, and set a flag information at the same time to distinguish whether to load code scanning parameters or system default camera parameters. This logo information may be preset and may be enabled or disabled based on the code scanning application in the mobile terminal. For example, the status of the code scanning application can be monitored. If the status of the code scanning application is the foreground running state, the preset flag information is on; otherwise, the preset flag information is set to off. status.

As another embodiment of the present application, the enabling or disabling the preset flag information based on the code scanning application in the mobile terminal includes:

After obtaining the information of the code scanning application activation, opening the preset flag information;

After obtaining the information that the code scanning application is switched from the foreground to the background, closing the preset flag information;

After obtaining the information that the code scanning application is switched from the background to the foreground, turn on the preset flag information;

After receiving the information that the code scanning application exits, the preset flag information is turned off.

In the embodiment of the present application, FIG. 3 illustrates how to enable or disable the preset flag information according to the code scanning application. The flag information can be controlled by a variable, and thus can also be a variable flag.

After the scanning application is opened, enter the code scanning application and turn on the variable flag at the same time. At this time, the code scanning application is running in the foreground; if the code scanning application is switched from the foreground to the background, it may be a code scanning application caused by switching to a photographing application Switching from the foreground to the background, or the code scanning application caused by switching to other applications, can be switched from the foreground to the background. When the code scanning application enters the background, the variable flag will be turned off. If the code scanning application is switched from the background to the foreground, The variable flag can be turned on; when exiting the scanning application, the variable flag needs to be turned off accordingly. Of course, there will be an unexpected situation. For example, when the code scanning application is running in the foreground, it crashes and exits due to some reasons. At this time, the variable flag needs to be turned off. That is, whether it is a normal exit or an abnormal exit, the variable flag needs to be turned off.

Through the above analysis, it can be found that the preset flag information is based on the scanning code application is turned on or off, so it will not cause changes to the native android system and the original camera application, so that even the system upgrade will not cause the scanning in this application. Code application is unavailable.

In step S202, if preset flag information is turned on, code scanning parameters are acquired, and an image is collected by the camera based on the code scanning parameters.

In step S203, if the preset flag information is not turned on, a photographing parameter is acquired, and an image is collected by the camera based on the photographing parameter.

In the embodiment of the present application, the preset flag information is a flag indicating whether the code scanning application is running in the foreground. If it is running in the foreground, it indicates that the instruction to start the camera of the mobile terminal is issued by the code scanning application. Based on the scan parameters, images are collected by the camera. If the camera is no longer running in the foreground, it indicates that the instruction to start the camera of the mobile terminal is issued by a photographing application. The camera captures images.

In actual application, write two different driver modules, load the driver module of the camera parameters when you want to take a picture, and load the driver module of the scan parameter when you want to scan the code. Of course, this can solve such problems, but you must do so in It is set in the application, which requires that the driver module of the scan parameter is loaded when the code scan application is opened, and the driver module of the camera parameter is loaded when the camera application is opened, but the problem is that if we design this way, we modify the camera application of the system. The original design, and this will cause code duplication and redundancy, and will also cause future versions of the Android system to be incompatible with our camera program. The real-time solution of this application only loads a driver module, which contains camera parameters and scans. These two parameters are code parameters. A parameter selection variable flag is set in the camera driver, and the method of making a system node is controlled by the upper-level application. Then the camera driver writes the corresponding parameters according to this parameter variable flag, so that you can open the camera application and use the camera. Parameter, open the code scanning application and use the code scanning parameters. As can be seen from the above description, collecting the image by the camera based on the scan parameters is: loading the scan parameters by the camera driver, and collecting images based on the scan parameters; Collecting images by the camera with the photographing parameters is: loading the photographing parameters with the camera driver, and acquiring images based on the photographing parameters.

In practical applications, there is actually a set of parameters in the camera application of the operating system. This is the default camera parameter of the system. It is the parameter used when taking pictures with the camera before the code scanning application is installed. Since this set of parameters is a parameter set based on the camera's photographic effect, we will refer to the parameters of the default camera in the system as photographic parameters. In the embodiment of the present application, after the code scanning application is installed, when the camera is used to take a picture, the system default set of photographing parameters is still used. In fact, the scanning code parameters can be modified based on the photographing parameters. For example, setting variable exposure gain, image brightness, image saturation, etc., and modifying the exposure gain, image brightness, image saturation, etc. in the photographing parameters as the scanning code. parameter.

The setting of the photographing parameters is to obtain a better photographing effect. When setting the scanning parameters, it is to pursue the scanning speed. When decoding, the image collected by the camera is usually set to a grayscale image. Therefore, the saturation, brightness, and various effects of colors in the image are not pursued by scanning. If you pursue various effects of taking pictures in terms of color, Instead, the original scanned image will be distorted, so that the recognition is slow or unrecognizable during scanning.

In the embodiment of the present application, we can also optimize the scanning speed in terms of code scanning. For a static codeword, it needs to be successfully decoded within one second. The one-second time here refers to the time from turning on the camera to closing the camera, and finally decoding. The time it takes for the library to successfully resolve the corresponding codeword. For dynamic codewords, it needs to reach a speed of less than twenty revolutions per minute to successfully decode. Regardless of whether the code is stationary or in dynamic scanning, we must also ensure that the corresponding codeword can be quickly identified at different angles and directions. To this end, we propose an optimization principle:

For stationary scanning, which means that the scanned codeword and our scanning machine are stationary, we can increase the exposure gain to achieve the information required by the image, which is also from the perspective of the decoding library. To think about it, this way you can get more information in the codeword, so that the decoding library can quickly find the desired information, and the recognition speed can be greatly improved;

For dynamic codewords, that is, the scanned codewords are constantly moving, or our code scanning machine is constantly moving, or both are constantly moving, we can reduce the image by The brightness can achieve the effect of quickly identifying dynamic codewords. You can also reduce the color saturation of the image to achieve the purpose of fast code scanning. This is mainly because it can reduce the time used for our exposure, and also because our decoding library In the principle of the scanned codeword image, it will eventually be converted into a grayscale image for further processing, so in fact, the image we took, whether it is black and white or color, will eventually be converted into a grayscale image. The brightness and color of the output image are actually not important to the scanning effect, but in fact, high brightness and high color saturation of the image will take more exposure time of the camera, which affects the actual speed of scanning the code as a whole.

Finally, in order to reduce the time used for code scanning, you can further optimize by turning off related debugging information and delay.

In summary, the obtaining the code scanning parameters based on the photographing parameters includes:

Adding a first preset value as the exposure gain of the scanning parameter based on the exposure gain in the photographing parameter;

Reducing a second preset value as the image brightness of the code scanning parameter based on the image brightness in the photographing parameters;

Reducing a third preset value as the image saturation of the code scanning parameter based on the image saturation in the photographing parameters;

The debugging operation and the delay operation of the photographing parameter are closed based on the photographing parameter.

As another embodiment of the present application, after acquiring an image through the camera based on the scanning parameters, the method further includes:

Performing a decoding operation on an image collected based on the code scanning parameters to obtain a code scanning result;

Displaying the code scanning result through a display interface of the mobile terminal.

In the embodiment of the present application, the purpose of setting the scanning code parameters is not only to obtain the scanning code image. In fact, after obtaining the scanning code image, it is necessary to perform a decoding operation on the image collected based on the scanning code parameter to obtain the scanning code. The result; and displaying the code scanning result through a display interface of the mobile terminal.

As the embodiment of the present application sets two sets of parameters, which are the scanning code parameter and the photographing parameter, the preset flag information is used to determine whether the camera is currently activated by the scanning application or the camera activated by the camera application. The image is collected by the camera based on the scan code parameters, and the image is collected by the camera when the photo is taken. In this way, the mobile terminal can be controlled to meet the requirements of accurate code scanning and better photographing effects without adding any hardware. In addition, since the embodiment of the present application does not modify the photographing application and the original camera driver in the original system, even if the system is upgraded, the problem of system incompatibility will not be caused. And the code scanning parameters are obtained on the basis of the original photographing parameters by changing the variables. In this way, there is no need to edit another set of codes, which also saves space.

It should be understood that the size of the sequence numbers of the steps in the above embodiments does not mean the order of execution. The execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiments of this application.

FIG. 4 is a schematic block diagram of a mobile terminal according to an embodiment of the present application. For ease of description, only a part related to the embodiment of the present application is shown.

The mobile terminal 4 may be a software unit, a hardware unit, or a combination of hardware and software, which is built into a mobile terminal such as a mobile phone, a tablet computer, or a notebook, or may be integrated into the mobile terminal such as a mobile phone, tablet, or notebook as an independent pendant. in.

The mobile terminal 4 includes:

A confirmation module 41, configured to check whether preset flag information is turned on after receiving an instruction to start the camera of the mobile terminal;

The code scanning module 42 is configured to obtain code scanning parameters if preset flag information is turned on, and collect images through the camera based on the code scanning parameters;

The photographing module 43 is configured to acquire photographing parameters if preset flag information is not turned on, and collect an image through the camera based on the photographing parameters.

Optionally, the mobile terminal 4 further includes:

The flag information setting module 44 is configured to enable or disable preset flag information based on a code scanning application in the mobile terminal.

Optionally, the flag information setting module 44 is further configured to:

Optionally, the confirmation module 41 is further configured to:

After receiving the system-based API interface of the code scanning application or photographing application, and calling the camera-driven instruction through the JNI interface, check whether preset flag information is enabled, where both the code scanning application and the photographing application are Based on system API interface, call camera driver through JNI interface;

Correspondingly, the code scanning module 42 is further configured to:

Loading the code scanning parameters through the camera driver, and acquiring an image based on the code scanning parameters;

Accordingly, the photographing module 43 is further configured to:

The camera parameters are loaded by the camera driver, and an image is acquired based on the camera parameters.

Optionally, the mobile terminal 4 further includes:

The code scanning parameter acquisition module 45 is configured to obtain the code scanning parameters based on the photographing parameters, where the photographing parameters are parameters used when the camera of the mobile terminal takes a picture.

Optionally, the code scanning parameter obtaining module 45 is further configured to:

Optionally, the mobile terminal 4 further includes:

A decoding module 46, configured to perform a decoding operation on an image collected based on the scan parameter to obtain a scan result after the image is collected by the camera based on the scan parameter;

A display module 47 is configured to display the code scanning result through a display interface of the mobile terminal.

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 assigned by different functional units, Module completion, that is, dividing the internal structure of the mobile terminal 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, and the integrated unit may use 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 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 device, reference may be made to corresponding processes in the foregoing method embodiments, and details are not described herein again.

FIG. 5 is a schematic block diagram of a mobile terminal according to another embodiment of the present application. As shown in FIG. 5, the mobile terminal 5 of this embodiment includes: one or more processors 50, a memory 51, and a computer program 52 stored in the memory 51 and executable on the processor 50. When the processor 50 executes the computer program 52, the steps in the embodiment of the control method of each camera are implemented, for example, steps S201 to S203 shown in FIG. 2. Alternatively, when the processor 50 executes the computer program 52, the functions of the modules / units in the above-mentioned embodiment of the mobile terminal are implemented, for example, the functions of modules 41 to 43 shown in FIG. 4.

Exemplarily, the computer program 52 may be divided into one or more modules / units, and the one or more modules / units are stored in the memory 51 and executed by the processor 50 to complete This 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 52 in the mobile terminal 5. For example, the computer program 52 may be divided into a confirmation module, a code scanning module, and a photographing module.

The confirmation module is configured to check whether preset flag information is turned on after receiving an instruction to start the camera of the mobile terminal;

The code scanning module is configured to obtain code scanning parameters if preset flag information is turned on, and collect an image through the camera based on the code scanning parameters;

The photographing module is configured to acquire photographing parameters if preset logo information is not turned on, and collect images through the camera based on the photographing parameters.

For other modules or units, reference may be made to the description in the embodiment shown in FIG. 4, and details are not described herein again.

The mobile terminal includes, but is not limited to, a processor 50 and a memory 51. Those skilled in the art can understand that FIG. 5 is only an example of the mobile terminal 5 and does not constitute a limitation on the mobile terminal 5. It may include more or fewer components than shown in the figure, or combine some components, or different Components, for example, the mobile terminal may further include an input device, an output device, a network access device, a bus, and the like.

The processor 50 may be a central processing unit (Central Processing Unit (CPU), or other general-purpose processors, Digital Signal Processors (DSPs), Application Specific Integrated Circuits (Application Specific Integrated Circuits) Specific Integrated Circuit (ASIC), off-the-shelf 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 memory 51 may be an internal storage unit of the mobile terminal 5, such as a hard disk or a memory of the mobile terminal 5. The memory 51 may also be an external storage device of the mobile terminal 5, such as a plug-in hard disk, a smart media card (SMC), and a secure digital (SD) provided on the mobile terminal 5. Flash card Card) and so on. Further, the memory 51 may also include both an internal storage unit of the mobile terminal 5 and an external storage device. The memory 51 is configured to store the computer program and other programs and data required by the mobile terminal. The memory 51 may also be used to temporarily store data that has been output or is to be output.

In the foregoing 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 combination 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. A professional technician 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 mobile terminal and method may be implemented in other ways. For example, the mobile terminal embodiments described above are merely schematic. For example, the division of the modules or units is only a logical function division. In actual implementation, there may be another division manner, such as multiple units or components. 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 as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, 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 integrated module / unit is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the present application implements all or part of the processes in the method of the above embodiment, and can also be completed by a computer program instructing related hardware. The computer program can be stored in a computer-readable storage medium. When the program is executed by a processor, the steps of the foregoing method embodiments can 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, Read-Only Memory), random access memory (RAM, Random Access Memory), electric carrier signals, telecommunication signals, and software distribution media. It should be noted that the content contained in the computer-readable medium can be appropriately increased or decreased according to the requirements of legislation and patent practice in the jurisdictions. For example, in some jurisdictions, the computer-readable medium Excludes electric carrier signals and telecommunication signals.

The above-mentioned embodiments are only used to describe the technical solution of the present application, but 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 implement the foregoing implementations. The technical solutions described in the examples 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 application, and should be included Within the scope of this application.

Claims

A camera control method is characterized in that it is applied to a mobile terminal, and the control method includes:

After receiving an instruction to start the camera of the mobile terminal, check whether preset flag information is turned on;

If preset flag information is turned on, acquiring code scanning parameters, and acquiring images through the camera based on the code scanning parameters;

If the preset flag information is not turned on, a photographing parameter is acquired, and an image is collected by the camera based on the photographing parameter.
The method for controlling a camera according to claim 1, further comprising:

Based on the code scanning application in the mobile terminal, preset flag information is turned on or off.
The method for controlling a camera according to claim 2, wherein the enabling or disabling of preset flag information based on a code scanning application in the mobile terminal comprises:

After obtaining the information of the code scanning application activation, opening the preset flag information;

After obtaining the information that the code scanning application is switched from the foreground to the background, closing the preset flag information;

After obtaining the information that the code scanning application is switched from the background to the foreground, turn on the preset flag information;

After receiving the information that the code scanning application exits, the preset flag information is turned off.
The method for controlling a camera according to claim 1, wherein after receiving an instruction to start the camera of the mobile terminal, checking whether the preset flag information is turned on comprises:

After receiving the system-based API interface of the code scanning application or photographing application, and calling the camera-driven instruction through the JNI interface, check whether preset flag information is enabled, where both the code scanning application and the photographing application are Based on system API interface, call camera driver through JNI interface;

Correspondingly, the acquiring images by the camera based on the code scanning parameters includes:

Loading the code scanning parameters through the camera driver, and acquiring an image based on the code scanning parameters;

The acquiring images by the camera based on the photographing parameters includes:

The camera parameters are loaded by the camera driver, and an image is acquired based on the camera parameters.
The method for controlling a camera according to claim 1, further comprising: before acquiring code scanning parameters and acquiring images by the camera based on the code scanning parameters, further comprising:

The scan code parameter is obtained based on the photographing parameter, and the photographing parameter is a parameter used when the camera of the mobile terminal takes a picture.
The method for controlling a camera according to claim 5, wherein the obtaining the scan code parameter based on the photographing parameter comprises:

Adding a first preset value as the exposure gain of the scanning parameter based on the exposure gain in the photographing parameter;

Reducing a second preset value as the image brightness of the code scanning parameter based on the image brightness in the photographing parameters;

Reducing a third preset value as the image saturation of the code scanning parameter based on the image saturation in the photographing parameters;

The debugging operation and the delay operation of the photographing parameter are closed based on the photographing parameter.
The method for controlling a camera according to claim 1, further comprising: after acquiring an image through the camera based on the scan parameter, further comprising:

Performing a decoding operation on an image collected based on the code scanning parameters to obtain a code scanning result;

Displaying the code scanning result through a display interface of the mobile terminal.
A mobile terminal, comprising:

A confirmation module, configured to check whether preset flag information is turned on after receiving an instruction to start the camera of the mobile terminal;

The code scanning module is configured to obtain code scanning parameters if preset flag information is turned on, and collect images through the camera based on the code scanning parameters;

A photographing module is configured to acquire photographing parameters if preset flag information is not turned on, and collect images through the camera based on the photographing parameters.
A mobile terminal includes a memory, a processor, and a computer program stored in the memory and executable on the processor, characterized in that, when the processor executes the computer program, the implementation of claims 1 to Steps of the method of any of 7.
A computer-readable storage medium, characterized in that the computer-readable storage medium stores a computer program, and when the computer program is executed by one or more processors, the method according to any one of claims 1 to 7 is implemented A step of.