CN106226976B - A dual-camera shooting method, system and terminal - Google Patents

Abstract

The invention discloses a dual-camera shooting method, system and terminal. The method includes: acquiring a shooting target; respectively controlling the black-and-white camera and the color camera to focus simultaneously to obtain the focus position of the black-and-white camera and the first focus position of the color camera; based on the focus position of the black-and-white camera, the The first focus position of the color camera is adjusted to obtain the second focus position of the color camera; the shooting target is photographed according to the focus position of the black-and-white camera and the second focus position of the color camera. The dual-camera shooting method provided by the embodiment of the present invention achieves faster and more accurate focusing in low-light environments, and makes up for the defect of insufficient light input by the color sensor in low-light environments, thereby improving the focusing effect. This improves the final shooting effect.

Description

A dual-camera shooting method, system and terminal

technical field

Embodiments of the present invention relate to the technical field of terminal photographing, and in particular, to a dual-camera photographing method, system, and terminal.

Background technique

With the development of electronic equipment, terminals with a camera function have been popularized in people's lives. Terminals with more and more functions have greatly facilitated people's lives. In recent years, with the rapid development of image processing technology, the camera function of the terminal has become increasingly powerful, coupled with the advantages of the terminal being easy to carry, more and more users prefer to take pictures through the terminal.

In order to improve the camera effect of terminals, more and more terminals adopt dual cameras of color and black and white. At present, there are two focusing methods used when shooting with a color plus black and white dual camera. One is to detect the distance based on the angle of view difference between the color camera and the black and white camera, and then focus according to the distance; Under the environment, the problem of inaccurate focus position is prone to occur, and in the environment with particularly poor light, the problem of focus failure is prone to occur; another focusing method is dual-camera asynchronous focusing, the color camera focuses first, and the black-and-white camera focuses according to the color camera. However, in this method, because the color sensor of the color camera does not receive as much light as the black and white sensor of the black and white camera in low light environments, in this method, inaccurate focus and slow focus are likely to occur in low light environments The problem.

Contents of the invention

Embodiments of the present invention provide a dual-camera shooting method, system, and terminal to achieve faster and more accurate focusing in low-light environments, make up for the defect of insufficient light input by color sensors in low-light environments, and improve The final shot.

In a first aspect, an embodiment of the present invention provides a dual-camera shooting method, the method comprising:

Get shooting target;

Respectively control the black and white camera and the color camera to focus simultaneously, obtain the focus position of the black and white camera and the first focus position of the color camera;

adjusting the first focus position of the color camera based on the focus position of the black and white camera to obtain a second focus position of the color camera;

The shooting target is photographed according to the focus position of the black-and-white camera and the second focus position of the color camera.

Further, before shooting the subject according to the focus position of the black-and-white camera and the second focus position of the color camera, the method further includes:

Receive shooting instructions.

Further, the focusing method adopted for focusing includes: phase focusing and/or contrast focusing.

Further, the adjusting the first focus position of the color camera based on the focus position of the black-and-white camera to obtain the second focus position of the color camera includes:

Judging whether the focus position of the black-and-white camera is a position satisfying a preset condition;

If the focus position of the black and white camera satisfies the preset condition, then determine the focus position of the black and white camera as the second focus position of the color camera;

If the focus position of the black-and-white camera is a position that does not meet the preset condition, then control the color camera to continue focusing with the focus position of the black-and-white camera and the first focus position of the color camera as reference points, The second focus position of the color camera is obtained.

Further, before acquiring the shooting target, it also includes:

Receive the start command of the camera.

In the second aspect, the embodiment of the present invention also provides a dual-camera shooting system, the system comprising:

an acquisition module, configured to acquire a shooting target;

The control module is used to separately control the black-and-white camera and the color camera to focus simultaneously, so as to obtain the focus position of the black-and-white camera and the first focus position of the color camera;

An adjustment module, configured to adjust the first focus position of the color camera based on the focus position of the black and white camera, to obtain a second focus position of the color camera;

The photographing module is configured to photograph the subject according to the focus position of the black-and-white camera and the second focus position of the color camera.

Further, the system further includes: a shooting instruction receiving module, configured to receive a shooting instruction before shooting the shooting target according to the focus position of the black-and-white camera and the second focus position of the color camera;

The starting instruction receiving module is used to receive the starting instruction of the camera before the acquisition of the shooting target.

Exemplarily, the focusing method adopted for focusing includes: phase focusing and/or contrast focusing.

Further, the adjustment module includes:

A judging unit, configured to judge whether the focus position of the black-and-white camera satisfies a preset condition;

A determination unit, configured to determine the focus position of the black-and-white camera as the second focus position of the color camera if the focus position of the black-and-white camera satisfies the preset condition;

A focus unit, configured to control the color camera to use the focus position of the black-and-white camera and the first focus position of the color camera as a reference if the focus position of the black-and-white camera does not satisfy the preset condition point to continue focusing to obtain the second focus position of the color camera.

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

In the dual-camera shooting method provided by the embodiment of the present invention, after acquiring the shooting target, the focus position of the black-and-white camera and the first focus position of the color camera are obtained by separately controlling the black-and-white camera and the color camera to focus simultaneously; Adjust the first focus position of the color camera based on the focus position of the black-and-white camera to obtain a second focus position of the color camera; according to the focus position of the black-and-white camera and the second focus position of the color camera The technical means of shooting the shooting target achieves faster and more accurate focusing in low-light environments, and makes up for the defect of insufficient light input by color sensors in low-light environments, thereby improving the focusing effect and further improving the final shooting effect.

Description of drawings

FIG. 1 is a schematic flowchart of a dual-camera shooting method provided in Embodiment 1 of the present invention;

FIG. 2 is a schematic flowchart of a dual-camera shooting method provided in Embodiment 2 of the present invention;

FIG. 3 is a schematic structural diagram of a dual-camera shooting system provided by Embodiment 3 of the present invention;

FIG. 4 is a schematic structural diagram of a dual-camera shooting system provided by Embodiment 4 of the present invention.

FIG. 5 is a schematic structural diagram of a terminal provided by Embodiment 5 of the present invention.

Detailed ways

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

Before discussing the exemplary embodiments in more detail, it should be mentioned that some exemplary embodiments are described as processes or methods depicted as flowcharts. Although the flowcharts describe the steps as sequential processing, many of the steps may be performed in parallel, concurrently, or simultaneously. Additionally, the order of the various steps can be rearranged. The process may be terminated when its steps are complete, but may also have additional steps not included in the figure. The processing may correspond to a method, function, procedure, subroutine, subroutine, or the like.

Embodiment one

FIG. 1 is a flow chart of a dual-camera shooting method provided in Embodiment 1 of the present invention. This method is especially suitable for shooting in a low-light environment through a terminal, and can be executed by a dual-camera shooting system. The system can be realized by means of hardware and/or software, and typically, the system can be generally integrated into a terminal. The method specifically includes the following steps:

Step 110, acquiring a shooting target.

Wherein, the acquisition of the shooting target may specifically be a process in which the user points the camera of the terminal at the object to be shot.

Further, before acquiring the shooting target, it also includes:

Receive the start command of the camera;

Specifically, the action of clicking the application icon of the camera on the terminal by the user triggers the start command of the camera, and the system end can receive the start command of the camera.

Step 120 : Control the black and white camera and the color camera to focus simultaneously, and obtain the focus position of the black and white camera and the first focus position of the color camera.

Preferably, the focusing method adopted for focusing includes: phase focusing and/or contrast focusing.

Among them, phase focusing, the shooting target separates two images through the separation lens, and then detects the distance between the two images through the linear sensor; phase focusing only detects the offset and only provides a signal - "accurate focus" or "focus Inaccurate", the focusing system can know the direction of the offset according to the position of the signal peak. Contrast focusing, according to the contrast change of the image at the focal point, find the lens position when the contrast is the largest, as the clearest focus position. During the focusing process, as the focusing lens starts to move, the image becomes clearer and the contrast begins to rise. When the image is clearest, When the contrast is the highest, it is already in focus, but the camera doesn’t know it, so it will continue to move the lens. When the contrast starts to drop, move the lens further, and find that the contrast drops further. The camera knows that it has missed the focus, and the lens rolls back to the highest contrast. position to complete the focus.

It needs to be briefly explained that the structure of the camera is generally composed of a lens, a sensor and a peripheral circuit. The sensor cannot work independently and needs the support of the peripheral circuit to convert the optical signal into an electrical signal; the light is reflected by the shooting target and reaches the photosensitive element of the sensor through the lens. In this way, the optical signal is converted into an electrical signal, and the converted electrical signal is sent to the image signal processor for analysis and processing, and the focusing lens is adjusted to find the clearest point of the image. This process is the process of autofocus. Corresponding to dual cameras, the black and white camera is equipped with a black and white sensor, and the color camera is equipped with a color sensor to complete the collection and conversion of optical signals. The light input of the black and white sensor is much larger than that of the color sensor. The sensor's focusing speed and effect are significantly better than color sensors. By configuring two cameras, a black-and-white camera and a color camera, the black-and-white camera is responsible for outlining the outline of the shooting target, and the color camera is responsible for restoring the color of the shooting target. Adjustments are made to achieve faster and more accurate focusing in low-light environments, making the final shooting effect better.

Step 130: Adjust the first focus position of the color camera based on the focus position of the black-and-white camera to obtain a second focus position of the color camera.

Because in a low-light environment, the amount of light entering the monochrome sensor of the monochrome camera is much greater than that of the color sensor of the color camera, therefore, the monochrome camera can find the focus position that makes the shooting target clearest, and the focus position of the focus position The accuracy is higher. In order to improve the overall focusing speed and accuracy, the first focus position of the color camera can be adjusted based on the focus position of the black and white camera, so that the focus position of the color camera can be adjusted at the fastest The speed reaches the best, and the best specifically refers to making the shooting target clearest.

Step 140: Shoot the subject according to the focus position of the black-and-white camera and the second focus position of the color camera.

Further, before shooting the subject according to the focus position of the black-and-white camera and the second focus position of the color camera, the method further includes:

Receive shooting instructions.

In the dual-camera shooting method provided in this embodiment, after obtaining the shooting target, the focus position of the black-and-white camera and the first focus position of the color camera are obtained by separately controlling the black-and-white camera and the color camera to simultaneously focus; The focus position of the black and white camera is adjusted to the first focus position of the color camera to obtain the second focus position of the color camera; according to the focus position of the black and white camera and the second focus position of the color camera The technical means for shooting the shooting target achieves faster and more accurate focusing in low-light environments, and makes up for the defect of insufficient light input by color sensors in low-light environments, thereby improving the focusing effect and further improving the The final shot.

Embodiment two

Fig. 2 is a schematic flow chart of a dual-camera shooting method provided by Embodiment 2 of the present invention. On the basis of Embodiment 1, this embodiment is based on the first focus position of the color camera based on the focus position of the black and white camera. The operation of making adjustments to obtain the second focus position of the color camera has been further optimized. The benefit of optimization is to further improve the accuracy and speed of focusing and improve the shooting effect. Specifically referring to shown in Figure 2, the method specifically includes as follows:

Step 210, acquiring a shooting target.

Step 220 : Control the black and white camera and the color camera to focus simultaneously, and obtain the focus position of the black and white camera and the first focus position of the color camera.

Step 230 , judging whether the focus position of the black and white camera satisfies the preset condition, if yes, execute step 240 , otherwise, execute step 250 .

Wherein, the position satisfying the preset condition specifically refers to the position where the shooting target is clearest; for example, if contrast focusing is adopted, the position satisfying the preset condition is the position with the highest contrast.

Step 240: Determine the focus position of the black and white camera as the second focus position of the color camera.

Step 250: Control the color camera to continue focusing with the focus position of the black-and-white camera and the first focus position of the color camera as reference points to obtain a second focus position of the color camera.

Wherein, the second focus position of the color camera is specifically the position where the shooting target is clearest.

Step 260: Shoot the subject according to the focus position of the black-and-white camera and the second focus position of the color camera.

In the dual-camera shooting method provided in this embodiment, on the basis of the technical solution of Embodiment 1, by further judging whether the focus position of the black-and-white camera satisfies the preset condition; if the focus position of the black-and-white camera is If the position of the preset condition is satisfied, the focus position of the black and white camera is determined as the second focus position of the color camera; if the focus position of the black and white camera is not satisfied with the preset condition, then Controlling the color camera to continue focusing with the focus position of the black-and-white camera and the first focus position of the color camera as reference points, obtaining the second focus position of the color camera further improves the accuracy and speed of focusing , which improves the final shooting effect.

Embodiment three

FIG. 3 is a structural block diagram of a dual-camera shooting system provided in Embodiment 3 of the present invention. Refer to FIG. 3 for details. The system specifically includes the following:

An acquisition module 310 , a control module 320 , an adjustment module 330 and a photographing module 340 .

Wherein, the obtaining module 310 is used to obtain the shooting target; the control module 320 is used to respectively control the black-and-white camera and the color camera to focus at the same time, so as to obtain the focus position of the black-and-white camera and the first focus position of the color camera; the adjustment module 330, for adjusting the first focus position of the color camera based on the focus position of the black-and-white camera to obtain a second focus position of the color camera 340, for adjusting the focus position of the black-and-white camera and The second focus position of the color camera shoots the shooting target.

Exemplarily, the focusing method adopted for focusing includes: phase focusing and/or contrast focusing.

Adjustment module 330 may include:

A judging unit, configured to judge whether the focus position of the black-and-white camera satisfies a preset condition;

A determination unit, configured to determine the focus position of the black-and-white camera as the second focus position of the color camera if the focus position of the black-and-white camera satisfies the preset condition;

A focus unit, configured to control the color camera to use the focus position of the black-and-white camera and the first focus position of the color camera as a reference if the focus position of the black-and-white camera does not satisfy the preset condition point to focus to obtain the second focus position of the color camera.

In the dual-camera shooting system provided by the embodiment of the present invention, after obtaining the shooting target, the focus position of the black-and-white camera and the first focus position of the color camera are obtained by separately controlling the black-and-white camera and the color camera to focus simultaneously; Adjust the first focus position of the color camera based on the focus position of the black-and-white camera to obtain a second focus position of the color camera; according to the focus position of the black-and-white camera and the second focus position of the color camera The technical means of shooting the shooting target achieves faster and more accurate focusing in low-light environments, and makes up for the defect of insufficient light input by color sensors in low-light environments, thereby improving the focusing effect and further improving the The final shot.

Embodiment four

Fig. 4 is a structural block diagram of a dual-camera shooting system provided in Embodiment 4 of the present invention. On the basis of Embodiment 3, the dual-camera shooting system provided in this embodiment has been further optimized, as shown in Fig. 4 for details. The system specifically includes the following:

An acquisition module 310 , a control module 320 , an adjustment module 330 , a photographing module 340 , a photographing instruction receiving module 350 and a starting instruction receiving module 360 .

Wherein, the obtaining module 310 is used to obtain the shooting target; the control module 320 is used to respectively control the black-and-white camera and the color camera to focus at the same time, so as to obtain the focus position of the black-and-white camera and the first focus position of the color camera; the adjustment module 330, configured to adjust the first focus position of the color camera based on the focus position of the black-and-white camera, to obtain a second focus position of the color camera; the photographing module 340, configured to adjust the focus position of the black-and-white camera according to and the second focus position of the color camera to shoot the shooting target; the shooting instruction receiving module 350 is used to receive a shooting instruction before the shooting of the shooting target; the start instruction receiving module 360 is used to Before the acquisition of the shooting target, a start instruction of the camera is received.

In the dual-camera shooting system provided in this embodiment, on the basis of the technical solution of Embodiment 3, by further judging whether the focus position of the black-and-white camera satisfies the preset condition; if the focus position of the black-and-white camera is If the position of the preset condition is satisfied, the focus position of the black and white camera is determined as the second focus position of the color camera; if the focus position of the black and white camera is not satisfied with the preset condition, then Controlling the color camera to continue focusing with the focus position of the black-and-white camera and the first focus position of the color camera as reference points, obtaining the second focus position of the color camera further improves the accuracy and speed of focusing , which improves the final shooting effect.

Embodiment five

FIG. 5 is a schematic structural diagram of a terminal provided in Embodiment 5 of the present invention. The terminal in the embodiment of the present invention may be a tablet computer, a mobile phone, a camera, and the like. As shown in FIG. 5 , the terminal in this embodiment of the present invention includes: at least one processor 501 , such as a CPU, at least one receiver 503 , at least one memory 504 , at least one transmitter 505 , and at least one communication bus 502 . Wherein, the communication bus 502 is used to realize connection and communication between these components. Wherein, the receiver 503 and the transmitter 505 of the device in the embodiment of the present invention may be a wired sending port, or may be a wireless device, such as including an antenna device, for signaling or data communication with other node devices. The memory 504 may be a high-speed RAM memory, or a non-volatile memory, such as at least one disk memory. Optionally, the memory 504 may also be at least one storage device located away from the aforementioned processor 501 . A set of program codes are stored in the memory 504 , and the processor 501 can call the codes stored in the memory 504 through the communication bus 502 to execute related functions.

The processor 501 is configured to obtain a shooting target; separately control the black and white camera and the color camera to focus simultaneously, and obtain the focus position of the black and white camera and the first focus position of the color camera; based on the focus position of the black and white camera Adjusting the first focus position of the color camera to obtain a second focus position of the color camera; shooting the subject according to the focus position of the black-and-white camera and the second focus position of the color camera.

The processor 501 is further configured to receive a shooting instruction before shooting the shooting target according to the focus position of the black-and-white camera and the second focus position of the color camera.

The processor 501 is further configured to determine the Whether the focus position of the black-and-white camera is a position that meets the preset condition; if the focus position of the black-and-white camera is a position that meets the preset condition, then the focus position of the black-and-white camera is determined as the second position of the color camera focus position; if the focus position of the black-and-white camera is a position that does not meet the preset condition, then control the color camera to continue using the focus position of the black-and-white camera and the first focus position of the color camera as reference points Focusing is carried out to obtain the second focus position of the color camera.

The processor 501 is further configured to receive a camera startup instruction before being used for acquiring the shooting target.

Optionally, the focusing method adopted for focusing includes: phase focusing and/or contrast focusing.

Specifically, for the specific implementation of each of the above solutions, reference may be made to the description of relevant steps in the embodiments corresponding to FIG. 1 to FIG. 2 , and details are not repeated here.

It can be seen that in the technical solution of the embodiment of the present invention, after acquiring the shooting target, the focus position of the black and white camera and the first focus position of the color camera are obtained by separately controlling the black and white camera and the color camera to focus at the same time; The focus position of the black and white camera is adjusted to the first focus position of the color camera to obtain the second focus position of the color camera; according to the focus position of the black and white camera and the second focus position of the color camera The technical means for shooting the shooting target achieves faster and more accurate focusing in low-light environments, and makes up for the defect of insufficient light input by color sensors in low-light environments, thereby improving the focusing effect and further improving the The final shot.

An embodiment of the present invention also provides a computer storage medium, wherein the computer storage medium can store a program, and when the program is executed, some or all steps of any dual-camera shooting method described in the above method embodiments are included.

The essence of the technical solution of the present invention or the part that contributes to the prior art or all or part of the technical solution can be embodied in the form of software products, the computer software products are stored in a storage medium, including several instructions for So that a computer device (which may be a personal computer, a server or a network device, etc.) executes all or part of the steps of the methods described in the various embodiments of the present invention. The aforementioned storage media include: U disk, read-only memory (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), mobile hard disk, magnetic disk or optical disk and other media that can store program codes. .

Those of ordinary skill in the art can understand that all or part of the steps in the various methods of the above-mentioned embodiments can be completed by instructing related hardware through a program, and the program can be stored in a computer-readable storage medium, and the storage medium can include: Flash drive, ROM, RAM, magnetic or optical disk, etc.

Those skilled in the art can understand that all or part of the steps in the method of the above-mentioned embodiments can be completed by instructing related hardware through a program. The program is stored in a storage medium and includes several instructions to make a device (which can be a single-chip , chip, etc.) or a processor (processor) executes all or part of the steps of the methods described in the various embodiments of the present application. The aforementioned storage medium includes: U disk, mobile hard disk, read-only memory (ROM, Read-OnlyMemory), random access memory (RAM, Random Access Memory), magnetic disk or optical disk and other media that can store program codes.

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

Claims (10)

1. a kind of dual camera image pickup method characterized by comprising

Obtain photographic subjects；

Black and white camera and colour imagery shot is controlled respectively to focus simultaneously, obtain the black and white camera focusing position and First focusing position of the colour imagery shot；

Focusing position based on the black and white camera is adjusted the first focusing position of the colour imagery shot, obtains institute State the second focusing position of colour imagery shot；

According to the second focusing position of the focusing position of the black and white camera and the colour imagery shot to the photographic subjects It is shot.

2. the method according to claim 1, wherein the focusing position and institute according to the black and white camera State colour imagery shot the second focusing position the photographic subjects are shot before, further includes:

Receive shooting instruction.

3. the method according to claim 1, wherein it is described focused used by focusing method include: phase Position focusing and/or contrast focusing.

4. the method according to claim 1, wherein the focusing position based on the black and white camera is to institute The first focusing position for stating colour imagery shot is adjusted, and obtains the second focusing position of the colour imagery shot, comprising:

Whether the focusing position for judging the black and white camera is the position for meeting preset condition；

If the focusing position of the black and white camera is the position for meeting the preset condition, by pair of the black and white camera Burnt position is determined as the second focusing position of the colour imagery shot；

If the focusing position of the black and white camera is the position for being unsatisfactory for the preset condition, the colour imagery shot is controlled Continue pair using the first focusing position of the focusing position of the black and white camera and the colour imagery shot as reference point Coke obtains the second focusing position of the colour imagery shot.

5. method according to claim 1 to 4, which is characterized in that before the acquisition photographic subjects, further includes:

Receive the enabled instruction of camera.

6. a kind of dual camera camera system characterized by comprising

Module is obtained, for obtaining photographic subjects；

Control module obtains the black and white camera shooting for controlling black and white camera and colour imagery shot respectively while focusing The focusing position of head and the first focusing position of the colour imagery shot；

Adjust module, for the focusing position based on the black and white camera to the first focusing position of the colour imagery shot into Row adjustment, obtains the second focusing position of the colour imagery shot；

Shooting module, for according to the focusing position of the black and white camera and the second focusing position pair of the colour imagery shot The photographic subjects are shot.

7. system according to claim 6, which is characterized in that further include:

Shooting instruction receiving module, in the focusing position according to the black and white camera and the colour imagery shot Before second focusing position shoots the photographic subjects, shooting instruction is received；

Enabled instruction receiving module, for receiving the enabled instruction of camera before the acquisition photographic subjects.

8. system according to claim 6, which is characterized in that it is described focused used by focusing method include: phase Position focusing and/or contrast focusing.

9. according to system as claimed in claim 6 to 8, which is characterized in that the adjustment module includes:

Judging unit, for judging whether the focusing position of the black and white camera is the position for meeting preset condition；

Determination unit will be described if the focusing position for the black and white camera is the position for meeting the preset condition The focusing position of black and white camera is determined as the second focusing position of the colour imagery shot；

Focusing unit controls if the focusing position for the black and white camera is the position for being unsatisfactory for the preset condition The colour imagery shot is ginseng with the first focusing position of the focusing position of the black and white camera and the colour imagery shot Examination point continues to focus, and obtains the second focusing position of the colour imagery shot.

10. a kind of terminal, which is characterized in that including any system of claim 6-9.