CN106254682A - A kind of photographic method and mobile terminal - Google Patents

Abstract

The invention discloses a photographing method, which is applied to a mobile terminal with a first camera and a second camera. The method includes: detecting whether the ambient brightness value of the scene to be photographed is within a preset brightness range; within the preset brightness range, control the first camera to focus on the scene to be shot, and send the obtained focus information to the second camera; control the second camera to focus according to the focus information; after the second camera focuses, control The second camera collects the first image information of the scene to be photographed; wherein, the photosensitivity of the first camera is higher than that of the second camera. Under the condition of specific brightness, the present invention starts the first camera with high photosensitivity to focus, and sends the focus parameters to the second camera, so that the second camera can focus and collect images according to the focus parameters, which solves the problems caused by environmental brightness. The problem of not being able to take clear images at low.

Description

A camera method and mobile terminal

technical field

The invention relates to the field of communication technologies, in particular to a photographing method and a mobile terminal.

Background technique

With the development of communication technology, mobile terminals have more and more entertainment functions, among which, the camera function, as one of the core entertainment functions, has become an important aspect for users to consider mobile terminals. The current mainstream mobile phone cameras are basically equipped with auto focus (AF, Auto focus) lenses, which can quickly and accurately focus when the surrounding environment is sufficiently bright. However, in the case of poor brightness in the surrounding environment, there are problems of slow focus and inaccurate focus, resulting in long photo taking time and poor photo effects.

Contents of the invention

Embodiments of the present invention provide a photographing method and a mobile terminal to solve the problems in the prior art that photographing is slow and the focusing effect is poor under conditions of poor brightness.

In a first aspect, an embodiment of the present invention provides a method for taking pictures, which is applied to a mobile terminal having a first camera and a second camera, and the method includes:

Detecting whether the ambient brightness value of the scene to be shot is within a preset brightness range;

If it is detected that the ambient brightness value is within the preset brightness range, the first camera is controlled to focus on the shooting scene, and the obtained focus information is sent to the second camera;

Control the second camera to focus according to the focus information;

After the focus of the second camera is completed, control the second camera to collect the first image information of the scene to be photographed;

Wherein, the photosensitivity of the first camera is higher than that of the second camera.

In the second aspect, the embodiment of the present invention also provides a mobile terminal, including a first camera and a second camera; wherein, the mobile terminal further includes:

A detection module, configured to detect whether the ambient brightness value of the scene to be photographed is within a preset brightness range;

A processing module, configured to control the first camera to perform focus processing on the shooting scene when the detection module detects that the ambient brightness value is within a preset range, and send the obtained focus information to the second camera;

The first focusing module is configured to control the second camera to focus according to the focusing information obtained by the processing module;

The first shooting module is used to control the second camera to collect the first image information of the scene to be shot after the focusing module has finished focusing;

Wherein, the photosensitivity of the first camera is higher than that of the second camera.

In this way, in the embodiment of the present invention, under a specific brightness condition, the mobile terminal controls to start the first camera with high photosensitivity to focus, and further sends the focus parameters to the second camera, so that the second camera can perform focusing according to the focus parameters. Quickly focus and capture images, because the first camera has a higher photosensitive sensitivity than the second camera, so the first camera can focus more quickly and accurately and obtain the focus parameters, and the second camera uses the focus parameters of the first camera to focus and shoot , in an environment with poor brightness conditions, it can output images with good focus and clear image quality.

Description of drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following will briefly introduce the accompanying drawings that need to be used in the description of the embodiments of the present invention. Obviously, the accompanying drawings in the following description are only some embodiments of the present invention , for those skilled in the art, other drawings can also be obtained according to these drawings without paying creative labor.

Fig. 1 represents the flowchart of the first embodiment of the photographing method of the present invention;

Fig. 2 represents the flowchart of the second embodiment of the photographing method of the present invention;

FIG. 3 shows one of the structural schematic diagrams of the mobile terminal of the present invention;

Fig. 4 shows the second structural diagram of the mobile terminal of the present invention;

Fig. 5 represents the block diagram of the fifth embodiment of the mobile terminal of the present invention;

Fig. 6 shows a block diagram of a sixth embodiment of the mobile terminal of the present invention.

detailed description

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

first embodiment

As shown in FIG. 1 , an embodiment of the present invention provides a method for taking pictures, which is applied to a mobile terminal, and the mobile terminal includes a first camera and a second camera with different photosensitivity. The photographing method specifically includes:

Step 101: Detect whether the ambient brightness value of the scene to be photographed is within a preset brightness range.

Wherein, the preset brightness range of ambient brightness mentioned here refers to the range of ambient light brightness that can be imaged after the traditional focusing mode takes a long time to focus and has a low success rate. Specifically, the preset brightness range refers to the range of light values in a dark environment (such as 1Lux to 50Lux). When the ambient brightness value is within the preset brightness range, it means that the current scene is a relatively dark environment. such as at night or in a dark room.

Step 102: If it is detected that the ambient brightness value is within the preset brightness range, control the first camera to focus on the scene to be shot, and send the obtained focus information to the second camera.

Wherein, the photosensitive sensitivity of the first camera is higher than that of the second camera, and the second camera is a general camera, so that the first camera can finish focusing faster than the second camera. For example, the first camera is a black and white camera with high photosensitivity, and the second camera is a color camera. When it is detected that the current ambient brightness value falls within the preset brightness range, start the first camera and the second camera at the same time, and control the first camera to focus on the scene to be shot, obtain a focus information, and send the focus information to Second camera.

Step 103: Control the second camera to focus according to the focus information.

Wherein, the focus information includes focus parameters such as a focus point position, a focus distance, and a focus range. After controlling the first camera to focus, the mobile terminal sends focus information to the second camera, and further controls the second camera to focus on the scene to be shot according to the focus information.

Step 104: After the second camera is focused, control the second camera to collect the first image information of the scene to be photographed.

Among them, the first camera is a black-and-white camera. Although it can achieve fast focusing, the image at the shooting location is black and white, and the picture effect is poor. In order to meet the visual needs of users, the second camera is used for shooting when the brightness conditions permit. to get a color image. That is, by using the first camera to quickly focus, the focus information generated after the first camera completes the focus is sent to the second camera, so as to control the second camera to perform fast focus according to the focus information of the first camera, and after the focus is completed, collect the images to be shot. The first image information of the scene.

In this way, in dark nights or in indoor shooting scenes, the first camera with high photosensitivity is activated to focus, and the focus parameters are further sent to the second camera, so that the second camera can perform a fast detection based on the focus parameters. Focusing and collecting images to output images with clear image quality solves the problems of inability to focus quickly and poor shooting effects in the prior art when the ambient brightness is low.

second embodiment

The above first embodiment briefly introduces the photographing method of the present invention, and the following embodiment will further describe it in conjunction with the accompanying drawings and specific application scenarios.

The photographing method of the present invention is applied to a mobile terminal, and the mobile terminal includes a first camera and a second camera with different photosensitivity. Specifically, the first camera is a black-and-white camera with high photosensitivity, and the second camera is a traditional color camera; wherein, the light intensity of the color camera is 50Lux (lux), while the black-and-white camera is under low-light conditions of 0.005Lux High-resolution image information can also be captured. Wherein, as shown in Figure 2, the photographing method includes the following steps:

Step 201: Collect the environmental information of the scene to be photographed in real time through the light sensor.

The ambient light sensor can sense the light conditions of the surrounding environment.

Step 202: Calculate the ambient brightness information to obtain the ambient brightness value of the scene to be photographed.

Further, according to the automatic exposure algorithm (AE) algorithm, the currently collected ambient brightness information is adjusted and processed to calculate the ambient brightness value of the current scene to be photographed.

Step 203: Detect whether the current ambient brightness value of the scene to be photographed is within a preset brightness range.

Wherein, the preset brightness range of the ambient brightness mentioned here refers to the ambient brightness range that can be imaged after the traditional focusing mode takes a long time to focus and has a low success rate. Preferably, the minimum value of the preset range can be set to 1Lux, and the maximum value of the preset range can be set to 50Lux, that is to say, when the ambient brightness value is lower than 1Lux, the color camera cannot be sensitive to light, and it is difficult to focus and Difficult to image; when the ambient brightness value is higher than 50Lux, the color camera can quickly focus and image; when the ambient brightness value is between 1Lux and 50Lux, the color camera can still be sensitive to light, but it is difficult to focus, but it can image after successful focusing. Specifically, the scene whose ambient brightness value falls within the preset brightness range is a relatively dark environment, such as night or a relatively dark room.

Step 204: If it is detected that the ambient brightness value is within the preset brightness range, control the first camera to focus on the scene to be shot, and send the obtained focus information to the second camera.

Wherein, the step of controlling the first camera to focus on the scene to be shot includes: acquiring the image to be focused on the scene to be shot collected by the first camera; calculating the contrast value of black and white edges in the image to be focused; when the contrast value reaches the highest peak value, The step number and position information of the focus motor of the first camera corresponding to the highest peak value are determined as the focus information of the first camera.

Wherein, the first camera is a black and white camera, and the second camera is a color camera. Because the first camera has a strong photosensitive ability and can collect black and white, clear images to be focused, it can quickly find the black and white edges (that is, the junction of black and white in the image to be focused), and calculate the black and white according to the automatic focus algorithm (AF algorithm). The peak with the highest contrast is defined as the sharpest point, and the step number and position information of the focus motor of the first camera at this time are recorded. Among them, it is worth pointing out that the focus parameters such as the focus point position, focus distance and focus range of the camera can be calculated according to the number of steps and position information of the focus motor of the camera. Further, because the motor of the second camera is the same as that of the first camera, the second camera can read the AF information recorded by the first camera.

Step 205: Control the second camera to focus according to the focus information.

Step 206: After the second camera is focused, control the second camera to collect the first image information of the scene to be photographed.

Wherein, the photosensitivity of the first camera is higher than that of the second camera. The focusing information includes focusing parameters such as focusing point position, focusing distance, and focusing range.

Step 207: If it is detected that the ambient brightness value exceeds the maximum value of the preset brightness range, control the second camera to focus on the scene to be shot.

When it is detected that the ambient brightness value exceeds the maximum value of the preset brightness range, it indicates that the current shooting environment has a high light intensity, and the second camera with general photosensitivity can quickly focus.

Step 208: After the second camera is focused, control the second camera to collect the second image information of the scene to be photographed.

The second camera can collect clear and colored second image information of the scene to be photographed after the focusing is completed. Wherein, the second camera can focus through a phase focusing method or a continuous focusing method.

Step 209: If it is detected that the ambient brightness value is lower than the minimum value of the preset brightness range, control the first camera to focus on the scene to be shot.

When it is detected that the ambient brightness value is lower than the minimum value of the preset brightness range, it means that in the current shooting environment, the second camera cannot sense light at all, and cannot focus and image. However, the first camera with better photosensitivity can also focus on photosensitivity.

Step 210: After the first camera is focused, control the first camera to collect third image information of the scene to be photographed.

The first camera can sense light to focus, and can collect black and white third image information of the scene to be shot after the focus is completed.

To sum up, in the photographing method of the embodiment of the present invention, the second camera is directly started to focus and shoot in a shooting environment with good light intensity, so as to obtain high-definition color image information; in a shooting environment with poor light intensity, Start the first camera with high photosensitive sensitivity to focus, and start the second camera capable of taking color images to shoot, so as to obtain higher-definition color image information; in the shooting environment with poor light intensity, start the photosensitive The high-resolution first camera is used to focus and shoot to obtain black-and-white image information with a resolution that meets the requirements; to solve the problems of inability to focus quickly and poor shooting effects in the prior art when the ambient brightness is low.

third embodiment

The above-mentioned first embodiment and second embodiment respectively introduce the image processing methods in different scenarios in detail, and the corresponding mobile terminal will be further introduced below with reference to FIG. 3 and FIG. 4 .

This embodiment provides a mobile terminal, including a first camera and a second camera with different photosensitive sensitivities, capable of detecting whether the ambient brightness value of the scene to be photographed is within the preset brightness range in the first embodiment and the second embodiment If it is detected that the ambient brightness value is within the preset brightness range, the first camera is controlled to focus on the scene to be shot, and the obtained focus information is sent to the second camera; wherein, the photosensitivity of the first camera is higher than The photosensitivity of the second camera; control the second camera to focus according to the focus information, and control the second camera to collect the details of the first image information method of the scene to be shot after the second camera is focused, and achieve the same technical effect . Among them, the mobile terminal also includes:

The detection module 310 is used to detect whether the ambient brightness value of the scene to be photographed is within the preset brightness range; wherein, the preset brightness range of the ambient brightness mentioned here refers to the long focusing time and the success rate of focusing in the traditional focusing mode. Low, but the ambient light brightness range that can be imaged after successful focusing. Specifically, the scene whose ambient brightness value falls within the preset range is a relatively dark environment, such as night or a relatively dark room.

The processing module 320 is configured to control the first camera to focus on the scene to be shot when the detection module detects that the ambient brightness value is within a preset brightness range, and send the obtained focusing information to the second camera.

The first focusing module 330 is configured to control the second camera to focus according to the focusing information obtained by the above processing module.

Wherein, the focus information includes focus parameters such as a focus point position, a focus distance, and a focus range.

The first photographing module 340 is configured to control the second camera to collect the first image information of the scene to be photographed after the first focusing module focuses. Wherein, the photosensitivity of the first camera is higher than that of the second camera.

In this way, in dark nights or in indoor shooting scenes, the first camera with high photosensitivity is activated to focus, and the focus parameters are further sent to the second camera, so that the second camera can perform a fast detection based on the focus parameters. Focusing and collecting images to output images with clear image quality solves the problems of inability to focus quickly and poor shooting effects in the prior art when the ambient brightness is low.

Wherein the mobile terminal also includes:

The acquisition module 300 is used to collect the ambient brightness information of the scene to be photographed in real time through the light sensor;

The calculation module 301 is configured to calculate the ambient brightness information to obtain the ambient brightness value of the scene to be photographed.

Among them, the mobile terminal also includes:

The second focusing module 350 is configured to control the second camera to focus on the scene to be shot when it is detected that the ambient brightness value exceeds the maximum value of the preset brightness range.

The second photographing module 360 is configured to control the second camera to collect the second image information of the scene to be photographed after the second focusing module focuses.

Among them, the mobile terminal also includes:

The third focusing module 370 is configured to control the first camera to focus on the scene to be shot when it is detected that the ambient brightness value is lower than the minimum value of the preset brightness range.

The third photographing module 380 is configured to control the first camera to collect third image information of the scene to be photographed after the third focusing module finishes focusing.

Wherein, the processing module 320 includes:

An acquisition unit 321, configured to acquire the image to be focused of the scene to be photographed collected by the first camera;

A calculation unit 322, configured to calculate the contrast value of black and white edges in the image to be focused;

The processing unit 323 is configured to determine, when the contrast value reaches the highest peak value, the step number and position information of the focus motor of the first camera corresponding to the highest peak value as the focus information of the first camera.

Wherein, the first camera is a black and white camera, and the second camera is a color camera.

It is worth pointing out that the mobile terminal in the embodiment of the present invention is a mobile terminal corresponding to the above-mentioned photographing method, and the implementation manner and achieved technical effects of the above-mentioned method are applicable to the embodiment of the mobile terminal. Wherein, the mobile terminal starts the first camera with high photosensitivity to focus under certain brightness conditions, and further sends the focus parameters to the second camera, so that the second camera can quickly focus and collect images according to the focus parameters, By outputting images with clear image quality, the problems of inability to focus quickly and poor shooting effects in the prior art under the condition of low ambient brightness are solved.

Fourth embodiment

FIG. 5 is a block diagram of a mobile terminal 500 according to another embodiment of the present invention. The mobile terminal shown in FIG. Wherein, the photographing component 503 includes a first camera and a second camera with different photosensitivity. The sensor component 505 includes a light sensor for collecting ambient light. Various components in the mobile terminal 500 are coupled together through the bus system 506 . It can be understood that the bus system 506 is used to realize connection and communication among these components. In addition to the data bus, the bus system 506 also includes a power bus, a control bus and a status signal bus. However, for clarity of illustration, the various buses are labeled as bus system 506 in FIG. 5 .

Wherein, the user interface 504 may include a display or a pointing device (such as a touch panel or a touch screen, etc.).

It can be understood that the memory 502 in the embodiment of the present invention may be a volatile memory or a nonvolatile memory, or may include both volatile and nonvolatile memories. Wherein, the non-volatile memory may be a read-only memory (Read-Only Memory, ROM), a programmable read-only memory (Programmable ROM, PROM), an erasable programmable read-only memory (Erasable PROM, EPROM), an electronically programmable Erase Programmable Read-Only Memory (Electrically EPROM, EEPROM) or Flash. The volatile memory can be Random Access Memory (RAM), which acts as an external cache. By way of illustration and not limitation, many forms of RAM are available such as Static RAM (SRAM), Dynamic RAM (DRAM), Synchronous DRAM (Synchronous DRAM, SDRAM), double data rate synchronous dynamic random access memory (Double Data RateSDRAM, DDRSDRAM), enhanced synchronous dynamic random access memory (Enhanced SDRAM, ESDRAM), synchronous connection dynamic random access memory (Synchlink DRAM, SLDRAM) and Direct memory bus random access memory (DirectRambus RAM, DRRAM). Memory 502 of the systems and methods described herein is intended to include, but is not limited to, these and any other suitable types of memory.

In some implementations, the memory 502 stores the following elements, executable modules or data structures, or their subsets, or their extended sets: an operating system 5021 and an application program 5022 .

Among them, the operating system 5021 includes various system programs, such as framework layer, core library layer, driver layer, etc., for realizing various basic services and processing tasks based on hardware. The application program 5022 includes various application programs, such as a media player (Media Player), a browser (Browser), etc., and is used to implement various application services. The program for realizing the method of the embodiment of the present invention may be included in the application program 5022 .

In the embodiment of the present invention, the programs or instructions stored in the memory 502, specifically, the programs or instructions stored in the application program 5022 may be called. Wherein, the processor 501 is used to detect whether the ambient brightness value of the scene to be photographed is within a preset brightness range; The obtained focusing information is sent to the second camera; wherein, the photosensitivity sensitivity of the first camera is higher than that of the second camera; the second camera is controlled to focus according to the focusing information, and after the second camera is focused, control the second camera to focus The second camera collects the first image information of the scene to be photographed.

The methods disclosed in the foregoing embodiments of the present invention may be applied to the processor 501 or implemented by the processor 501 . The processor 501 may be an integrated circuit chip with signal processing capabilities. In the implementation process, each step of the above method may be completed by an integrated logic circuit of hardware in the processor 501 or instructions in the form of software. The aforementioned processor 501 may be a general purpose processor, a digital signal processor (Digital Signal Processor, DSP), an application specific integrated circuit (Application Specific Integrated Circuit, ASIC), an off-the-shelf programmable gate array (Field Programmable Gate Array, FPGA) or other available Program logic devices, discrete gate or transistor logic devices, discrete hardware components. Various methods, steps and logic block diagrams disclosed in the embodiments of the present invention may be implemented or executed. A general-purpose processor may be a microprocessor, or the processor may be any conventional processor, or the like. The steps of the methods disclosed in the embodiments of the present invention may be directly implemented by a hardware decoding processor, or implemented by a combination of hardware and software modules in the decoding processor. The software module can be located in a mature storage medium in the field such as random access memory, flash memory, read-only memory, programmable read-only memory or electrically erasable programmable memory, register. The storage medium is located in the memory 502, and the processor 501 reads the information in the memory 502, and completes the steps of the above method in combination with its hardware.

It should be understood that the embodiments described herein may be implemented by hardware, software, firmware, middleware, microcode or a combination thereof. For hardware implementation, the processing unit can be implemented in one or more application specific integrated circuits (Application Specific Integrated Circuits, ASIC), digital signal processor (Digital Signal Processing, DSP), digital signal processing device (DSP Device, DSPD), programmable logic Device (Programmable Logic Device, PLD), Field-Programmable Gate Array (Field-Programmable Gate Array, FPGA), general-purpose processor, controller, microcontroller, microprocessor, other electronic units for performing the functions described in this application or a combination thereof.

For a software implementation, the techniques described herein can be implemented through modules (eg, procedures, functions, and so on) that perform the functions described herein. Software codes can be stored in memory and executed by a processor. Memory can be implemented within the processor or external to the processor.

Specifically, the processor 501 is further configured to: collect the ambient brightness information of the scene to be photographed in real time through the light sensor, and calculate the ambient brightness information to obtain the ambient brightness value of the scene to be photographed.

Specifically, the processor 501 is also used to: when it is detected that the ambient brightness value exceeds the maximum value of the preset range, control the second camera to focus on the scene to be shot; The second image information of the scene.

Specifically, the processor 501 is also configured to: when it is detected that the ambient brightness value is lower than the minimum value of the preset range, control the first camera to focus on the scene to be shot; The third image information of the shooting scene.

Specifically, the processor 501 is further configured to: acquire the to-be-focused image of the scene to be shot collected by the first camera; calculate the contrast value of black and white edges in the to-be-focused image; when the contrast value reaches the highest peak value, correspond the highest peak value to The focus motor steps and position information of the first camera are determined as the focus information of the first camera.

The mobile terminal 500 of the embodiment of the present invention starts the first camera with high photosensitivity to focus under certain brightness conditions, and further sends the focus parameters to the second camera, so that the second camera can quickly focus according to the focus parameters And collect images to output images with clear quality, which solves the problems of inability to focus quickly and poor shooting effects in the prior art when the ambient brightness is low.

fifth embodiment

Fig. 6 is a schematic structural diagram of a mobile terminal according to another embodiment of the present invention. Specifically, the mobile terminal 600 in FIG. 6 may be a mobile phone, a tablet computer, a personal digital assistant (Personal Digital Assistant, PDA), or a vehicle-mounted computer.

Mobile terminal 600 among Fig. 6 comprises power supply 610, memory 620, input unit 630, display unit 640, camera assembly 650, processor 660, WIFI (Wireless Fidelity) module 670, audio circuit 680, RF circuit 690 and sensor assembly 700, Wherein, the photographing component 650 includes a first camera and a second camera with different photosensitivity, specifically, the first camera is a black and white camera, and the second camera is a color camera. The sensor assembly 700 includes a light sensor for collecting ambient light.

Wherein, the input unit 630 can be used for receiving information input by a user, and generating signal input related to user setting and function control of the mobile terminal 600 . Specifically, in the embodiment of the present invention, the input unit 630 may include a touch panel 631 . The touch panel 631, also referred to as a touch screen, can collect user's touch operations on or near it (such as the user's operation on the touch panel 631 using any suitable object or accessory such as a finger, a stylus), and The specified program drives the corresponding connected device. Optionally, the touch panel 631 may include two parts, a touch detection device and a touch controller. Among them, the touch detection device detects the user's touch orientation, and detects the signal brought by the touch operation, and transmits the signal to the touch controller; the touch controller receives the touch information from the touch detection device, converts it into contact coordinates, and sends it to the to the processor 660, and can receive and execute commands sent by the processor 660. In addition, the touch panel 631 can be implemented in various types such as resistive, capacitive, infrared, and surface acoustic wave.

Wherein, the display unit 640 can be used to display information input by the user or information provided to the user and various menu interfaces of the mobile terminal. The display unit 640 may include a display panel 641. Optionally, the display panel 641 may be configured in the form of an LCD or an organic light-emitting diode (Organic Light-Emitting Diode, OLED).

It should be noted that the touch panel 631 can cover the display panel 641 to form a touch display screen. When the touch display screen detects a touch operation on or near it, it is sent to the processor 660 to determine the type of the touch event, and then the processor 660 provides corresponding visual output on the touch display screen according to the type of the touch event. In addition to the touch panel 631, the input unit 630 may also include other input devices 632, which may include but not limited to physical keyboards, function keys (such as volume control buttons, switch buttons, etc.), trackballs, mice, joysticks, etc. one or more of.

The touch display screen includes an application program interface display area and a common control display area. The arrangement of the display area of the application program interface and the display area of the commonly used controls is not limited, and may be an arrangement in which the two display areas can be distinguished, such as vertical arrangement, left-right arrangement, and the like. The application program interface display area can be used to display the interface of the application program. Each interface may include at least one interface element such as an icon of an application program and/or a widget desktop control. The application program interface display area can also be an empty interface without any content. The commonly used control display area is used to display controls with a high usage rate, for example, application icons such as setting buttons, interface numbers, scroll bars, and phonebook icons.

Wherein the processor 660 is the control center of the mobile terminal, utilizes various interfaces and lines to connect the various parts of the whole mobile phone, by running or executing the software programs and/or modules stored in the first memory 621, and calling the software programs and/or modules stored in the second memory The data in 622 executes various functions of the mobile terminal and processes data, so as to monitor the mobile terminal as a whole. Optionally, the processor 660 may include one or more processing units.

In the embodiment of the present invention, by calling the software programs and/or modules stored in the first memory 621 and/or data in the second memory 622, it is detected whether the ambient brightness value of the scene to be photographed is within a preset brightness range; If it is detected that the ambient brightness value is within the preset brightness range, the first camera is controlled to focus on the scene to be shot, and the obtained focusing information is sent to the second camera; wherein, the photosensitivity of the first camera is higher than that of the second camera. The photosensitivity of the camera; controlling the second camera to focus according to the focusing information; after the second camera is focused, controlling the second camera to collect the first image information of the scene to be photographed.

Specifically, the processor 660 is further configured to: collect the ambient brightness information of the scene to be photographed in real time through the light sensor, and calculate the ambient brightness information to obtain the ambient brightness value of the scene to be photographed.

Specifically, the processor 660 is also used to control the second camera to focus on the scene to be shot when it is detected that the ambient brightness value exceeds the maximum value of the preset range, and control the second camera to capture the scene to be shot after the second camera is focused. The second image information of the scene.

Specifically, the processor 660 is also used to: when it is detected that the ambient brightness value is lower than the minimum value of the preset range, control the first camera to focus on the scene to be shot, and after the first camera focuses, control the first camera to acquire The third image information of the shooting scene.

Specifically, the processor 660 is also configured to: acquire the image to be focused on the scene to be shot captured by the first camera, and calculate the contrast value of black and white edges in the image to be focused; The step number and position information of the focus motor of a camera are determined as the focus information of the first camera.

The mobile terminal 600 of the embodiment of the present invention starts the first camera with high photosensitivity to focus under certain brightness conditions, and further sends the focus parameters to the second camera, so that the second camera can quickly focus according to the focus parameters And collect images to output images with clear quality, which solves the problems of inability to focus quickly and poor shooting effects in the prior art when the ambient brightness is low.

Those skilled in the art can appreciate that the units and algorithm steps of the examples described in conjunction with the embodiments disclosed herein can be implemented by electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are executed by hardware or software depends on the specific application and design constraints of the technical solution. Those skilled in the art may use different methods to implement the described functions for each specific application, but such implementation should not be regarded as exceeding the scope of the present invention.

Those skilled in the art can clearly understand that for the convenience and brevity of the description, the specific working process of the above-described system, device and unit can refer to the corresponding process in the foregoing method embodiment, which will not be repeated here.

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

The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place, or may be distributed to multiple network units. Part or all of the units can be selected according to actual needs to achieve the purpose of the solution of this embodiment.

In addition, each functional unit in each embodiment of the present invention may be integrated into one processing unit, each unit may exist separately physically, or two or more units may be integrated into one unit.

If the functions described above are realized in the form of software function units and sold or used as independent products, they can be stored in a computer-readable storage medium. Based on this understanding, the essence of the technical solution of the present invention or the part that contributes to the prior art or the part of the technical solution can be embodied in the form of a software product, and the computer software product is stored in a storage medium, including Several instructions are used to make a computer device (which may be a personal computer, a server, or a network device, etc.) execute all or part of the steps of the methods described in various embodiments of the present invention. The aforementioned storage medium includes: various media capable of storing program codes such as U disk, mobile hard disk, ROM, RAM, magnetic disk or optical disk.

What has been described above is a preferred embodiment of the present invention. It should be pointed out that for those skilled in the art, some improvements and modifications can also be made without departing from the principles described in the present invention. within the scope of protection of the invention.

Claims (10)

1. A method for taking pictures, applied to a mobile terminal with a first camera and a second camera, characterized in that the method comprises: Detecting whether the ambient brightness value of the scene to be shot is within a preset brightness range; If it is detected that the ambient brightness value is within a preset brightness range, then controlling the first camera to focus on the scene to be photographed, and sending the obtained focus information to the second camera; controlling the second camera to focus according to the focusing information; After the focus of the second camera is completed, control the second camera to collect the first image information of the scene to be photographed; Wherein, the photosensitivity of the first camera is higher than the photosensitivity of the second camera. 2. The photographing method according to claim 1, wherein before the step of detecting whether the ambient brightness value of the scene to be photographed is within a preset brightness range, the method further comprises: The ambient brightness information of the scene to be shot is collected in real time through the light sensor; The ambient brightness information is calculated to obtain the ambient brightness value of the scene to be photographed. 3. The photographing method according to claim 1, characterized in that, after the step of detecting whether the current ambient brightness value of the scene to be photographed is within a preset brightness range, the method further comprises: If it is detected that the ambient brightness value exceeds the maximum value of the preset brightness range, then controlling the second camera to focus on the scene to be photographed; After the second camera is focused, the second camera is controlled to collect second image information of the scene to be photographed. 4. The photographing method according to claim 1, characterized in that, after the step of detecting whether the current ambient brightness value of the scene to be photographed is within a preset brightness range, the method further comprises: If it is detected that the ambient brightness value is lower than the minimum value of the preset brightness range, then controlling the first camera to focus on the scene to be photographed; After the first camera is focused, the first camera is controlled to collect third image information of the scene to be photographed. 5. The photographing method according to claim 1, wherein the step of controlling the first camera to focus on the scene to be photographed comprises: Acquiring the to-be-focused image of the scene to be shot captured by the first camera; Calculating the contrast value of black and white edges in the image to be focused; When the contrast value reaches the highest peak value, the step count and position information of the focus motor of the first camera corresponding to the highest peak value are determined as the focus information of the first camera. 6. A mobile terminal, comprising a first camera and a second camera, characterized in that the mobile terminal also includes: A detection module, configured to detect whether the ambient brightness value of the scene to be photographed is within a preset brightness range; A processing module, configured to control the first camera to perform focus processing on the scene to be shot when the detection module detects that the ambient brightness value is within a preset brightness range, and send the obtained focus information to the second camera; a first focusing module, configured to control the second camera to focus according to the focusing information obtained by the processing module; The first shooting module is configured to control the second camera to collect the first image information of the scene to be shot after the first focusing module focuses; Wherein, the photosensitivity of the first camera is higher than the photosensitivity of the second camera. 7. The mobile terminal according to claim 6, wherein the mobile terminal further comprises: The acquisition module is used to collect the ambient brightness information of the scene to be photographed in real time through the light sensor; A calculation module, configured to calculate the ambient brightness information to obtain the ambient brightness value of the scene to be photographed. 8. The mobile terminal according to claim 6, wherein the mobile terminal further comprises: A second focusing module, configured to control the second camera to focus on the scene to be photographed when it is detected that the ambient brightness value exceeds the maximum value of the preset brightness range; The second shooting module is configured to control the second camera to collect the second image information of the scene to be shot after the second focusing module finishes focusing. 9. The mobile terminal according to claim 6, wherein the mobile terminal further comprises: A third focusing module, configured to control the first camera to focus on the scene to be photographed when it is detected that the ambient brightness value is lower than the minimum value of the preset brightness range; The third photographing module is configured to control the first camera to collect third image information of the scene to be photographed after the third focusing module finishes focusing. 10. The mobile terminal according to claim 6, wherein the processing module comprises: an acquisition unit, configured to acquire the to-be-focused image of the scene to be shot captured by the first camera; a calculation unit, configured to calculate the contrast value of black and white edges in the image to be focused; A processing unit, configured to determine, when the contrast value reaches the highest peak value, the step number and position information of the focus motor of the first camera corresponding to the highest peak value as the focus information of the first camera.