CN109120839B - A focusing method and terminal for dual cameras - Google Patents

Abstract

The embodiments of the present application disclose a dual camera focusing method and terminal, which are used to improve the focusing efficiency of the cameras. The method according to the embodiment of the present application includes: acquiring first focus information of a first camera and second focus information of a second camera; determining a first target FOV of the first camera according to the first focus information, and determining the first target FOV of the first camera according to the first focus information. The second focus information determines the first optional FOV of the second camera; according to the FOV correspondence between the first camera and the second camera, and the first target FOV, the second optional FOV of the second camera is determined FOV is selected; the first optional FOV and the second optional FOV are determined according to the first confidence in the first focus information and the second confidence in the second focus information from the first optional FOV and the second optional FOV The second target FOV of the two cameras controls the first camera to move to a position corresponding to the first target FOV, and controls the second camera to move to a position corresponding to the second target FOV.

Description

A focusing method and terminal for dual cameras

technical field

The present application relates to the field of image processing, and in particular, to a focusing method and terminal for dual cameras.

Background technique

With the rapid development of smart terminals such as mobile phones or tablet computers, mobile terminals provide more and more help to users in terms of life, work, and entertainment. Among them, the shooting function has become an indispensable part of the mobile terminal, and with the improvement of people's quality of life, people have higher and higher requirements for the shooting effect, therefore, the focusing effect during the shooting process is also more and more important.

In the prior art, in a mobile phone with dual cameras (camera A and camera B), the focusing processes of camera A and camera B are independent, and there is no obvious interaction process. Since camera A and camera B do not interact, it is easy to occur. Camera A stabilizes very quickly, while camera B has a large bellows phenomenon (that is, the camera searches back and forth, and the user sees clear and blurred changes in the interface), which is very bad for camera B's imaging display. The use of unfocused data will also cause problems with the effect of photos; in addition to the above problems, there are problems in the prior art, such as camera A completes focusing first, while camera B slowly searches for focusing, and then completes focusing after a long time.

For the above two types of focusing, the user will see obvious clear and blurred focus switching back and forth, or see the process of focusing slowly. These focusing processes will make the focusing efficiency of the camera low.

SUMMARY OF THE INVENTION

Embodiments of the present application provide a dual camera focusing method and terminal, which are used to improve the focusing efficiency of the cameras.

A first aspect of the embodiments of the present application provides a method for focusing with dual cameras, wherein the dual cameras include a first camera and a second camera, and specifically includes:

When the camera in the terminal needs to focus, the terminal will obtain the first focus information of the first camera and the second focus information of the second camera; and then determine the first target of the first camera according to the first focus information FOV, and determine the first optional FOV of the second camera according to the second focus information, and then determine the second optional FOV of the second camera according to the FOV correspondence between the first camera and the second camera, and the first target FOV; The second target FOV of the second camera is determined from the first selectable FOV and the second selectable FOV according to the first confidence in the first focus information and the second confidence in the second focus information, wherein the first confidence The degree of reliability is used to represent the reliability of the first focus information, and the second confidence degree is used to represent the reliability of the second focus information; finally, the first camera is controlled to move to the position corresponding to the first target FOV, and the second camera is controlled to move to The position corresponding to the second target FOV. The terminal in the embodiment of the present application realizes the linkage adjustment of the dual cameras according to the corresponding relationship between the first camera and the second camera, which can improve the focusing efficiency of the cameras, thereby improving the user experience.

In a possible design, in the first implementation manner of the first aspect of the embodiments of the present application, the first confidence level in the first focusing information and the second confidence level in the second focusing information Determining the second target FOV of the second camera in the optional FOV and the second optional FOV includes: when the terminal determines that the difference between the first optional FOV and the second optional FOV is greater than a preset value, then The second target FOV is determined from the first selectable FOV and the second selectable FOV according to the first confidence level and the second confidence level. This embodiment of the present application adds a precondition for determining the second target FOV from the first optional FOV and the second optional FOV according to the first confidence level and the second confidence level, which enriches the The specific implementation of the embodiment.

In a possible design, in a second implementation manner of the first aspect of the embodiments of the present application, the method further includes: when the terminal determines that there is a difference between the first optional FOV and the second optional FOV When the difference is not greater than the preset value, the first selectable FOV may be determined as the second target FOV of the second camera at this time. In this embodiment of the present application, a result that the difference between the first optional FOV and the second optional FOV is not greater than the preset value is added, which increases the integrity of the embodiment of the present application.

In a possible design, in a third implementation manner of the first aspect of the embodiments of the present application, the first confidence level in the first focusing information and the second The confidence in determining the second target FOV of the second camera from the first optional FOV and the second optional FOV includes: when the terminal determines that the moving direction indicated by the first optional FOV is different from the first optional FOV. When the moving directions indicated by the two optional FOVs are opposite, at this time, according to the first confidence level and the second confidence level, determine the Second target FOV. This embodiment of the present application adds another precondition for determining the second target FOV from the first optional FOV and the second optional FOV according to the first confidence level and the second confidence level, The specific implementation of the embodiment is enriched.

In a possible design, in a fourth implementation manner of the first aspect of the embodiments of the present application, the first target FOV of the first camera is determined according to the first focus information, and the first target FOV of the first camera is determined according to the first focus information, and the second Determining the first optional FOV of the second camera from the focusing information includes: first, the terminal obtains the first current FOV and the first FOV difference of the first camera from the first focusing information, and obtains the first FOV of the first camera from the first focusing information, and obtains the first FOV difference from the second focusing information. Obtain the second current FOV and the second FOV difference in The FOV and the second FOV difference determine a first selectable FOV for the second camera. The embodiment of the present application details how to determine the first target FOV of the first camera according to the first focus information, and determine the first optional FOV of the second camera according to the second focus information, which enriches the implementation The specific implementation means of the example.

In a possible design, in a fifth implementation manner of the first aspect of the embodiments of the present application, the first confidence level in the first focusing information and the second The confidence in determining the second target FOV of the second camera from the first selectable FOV and the second selectable FOV includes: if the focusing mode of the first focusing information and the focusing mode of the second focusing information are the same, then the optional FOV corresponding to the larger of the first confidence level and the second confidence level is selected as the second target FOV; A first confidence level in the focus information and a second confidence level in the second focus information determine a second target FOV of the second camera from the first selectable FOV and the second selectable FOV , which enriches the specific implementation of the embodiments of the present application.

In a possible design, in a sixth implementation manner of the first aspect of the embodiments of the present application, the first confidence level in the first focusing information and the second The confidence in determining the second target FOV of the second camera from the first optional FOV and the second optional FOV includes: if the focusing mode of the first focusing information and the difference between the second focusing information If the focusing methods are different, then the optional FOV corresponding to the first confidence level and the confidence level with a higher priority among the second confidence levels is selected as the second target FOV according to the priority ordering of the focusing methods . This embodiment of the present application describes how to extract information from the first selectable FOV and the second selectable FOV according to the first confidence level in the first focus information and the second confidence level in the second focus information Determining the second target FOV of the second camera enriches the specific implementation of the embodiments of the present application.

In a possible design, in a seventh implementation manner of the first aspect of the embodiments of the present application, the FOV correspondence is a FOV correspondence table between the first camera and the second camera. The embodiment of the present application specifically describes the existence mode of the FOV correspondence, and adds the specific implementation mode of the embodiment.

In a possible design, in an eighth implementation manner of the first aspect of the embodiments of the present application, at least one of the first focus information and the second focus information is obtained by any one of the following: a phase difference Focusing method, laser focusing method or contrast focusing method. The embodiments of the present application describe the focusing methods of the first focusing information and the second focusing information, which increases the operability of the embodiments of the present application.

A second aspect of the embodiments of the present application provides a terminal for implementing dual-camera focusing, where the dual-camera includes a first camera and a second camera, including:

an acquisition unit, configured to acquire the first focus information of the first camera and the second focus information of the second camera;

a first determining unit, configured to determine the first target field of view FOV of the first camera according to the first focus information, and determine the first optional FOV of the second camera according to the second focus information;

a second determining unit, configured to determine the second optional FOV of the second camera according to the FOV correspondence between the first camera and the second camera, and the first target FOV;

a third determining unit, configured to extract data from the first selectable FOV and the second selectable FOV according to the first confidence level in the first focus information and the second confidence level in the second focus information determining the second target FOV of the second camera, the first confidence level is used to represent the reliability of the first focus information, and the second confidence level is used to represent the reliability of the second focus information;

A control unit, configured to control the first camera to move to a position corresponding to the first target FOV, and to control the second camera to move to a position corresponding to the second target FOV.

The terminal in the embodiment of the present application can realize the linkage adjustment of the dual cameras according to the corresponding relationship between the first camera and the second camera, which can improve the focusing efficiency of the cameras, thereby improving the user experience.

In a possible design, in a first implementation manner of the second aspect of the embodiment of the present application, the third determining unit includes:

The first determination subunit is configured to, when the difference between the first selectable FOV and the second selectable FOV is greater than a preset value, determine the value from the selected value according to the first confidence level and the second confidence level. The second target FOV is determined from the first selectable FOV and the second selectable FOV.

This embodiment of the present application adds a precondition for determining the second target FOV from the first optional FOV and the second optional FOV according to the first confidence level and the second confidence level, which enriches the The specific implementation of the embodiment.

In a possible design, in the second implementation manner of the second aspect of the embodiment of the present application, the terminal further includes:

a fourth determining unit, configured to determine the first selectable FOV as the first selectable FOV when the difference between the first selectable FOV and the second selectable FOV is not greater than the preset value The second target FOV of the second camera.

In this embodiment of the present application, a result that the difference between the first optional FOV and the second optional FOV is not greater than the preset value is added, which increases the integrity of the embodiment of the present application.

In a possible design, in a third implementation manner of the second aspect of the embodiment of the present application, the third determining unit includes:

A second determination subunit, configured to, when the moving direction indicated by the first selectable FOV is opposite to the moving direction indicated by the second selectable FOV, according to the first confidence level and the second confidence The second target FOV is determined from the first selectable FOV and the second selectable FOV.

This embodiment of the present application adds another precondition for determining the second target FOV from the first optional FOV and the second optional FOV according to the first confidence level and the second confidence level, The specific implementation of the embodiment is enriched.

In a possible design, in a fourth implementation manner of the second aspect of the embodiments of the present application, the first determining unit includes:

a first obtaining subunit, configured to obtain the first current FOV and the first FOV difference of the first camera from the first focusing information, and obtain the second current FOV and the first FOV from the second focusing information The second FOV difference;

A third determination subunit, configured to determine the first target FOV of the first camera according to the first current FOV and the first FOV difference, and determine the first target FOV of the first camera according to the second current FOV and the second FOV difference A first selectable FOV for the second camera is determined.

The embodiment of the present application details how to determine the first target FOV of the first camera according to the first focus information, and determine the first optional FOV of the second camera according to the second focus information, which enriches the implementation The specific implementation means of the example.

In a possible design, in a fifth implementation manner of the second aspect of the embodiment of the present application, the third determining unit includes:

a first selection subunit, configured to select the larger of the first confidence level and the second confidence level when the focusing method of the first focusing information and the focusing method of the second focusing information are the same The corresponding optional FOV is used as the second target FOV;

This embodiment of the present application describes how to extract information from the first selectable FOV and the second selectable FOV according to the first confidence level in the first focus information and the second confidence level in the second focus information Determining the second target FOV of the second camera enriches the specific implementation of the embodiments of the present application.

In a possible design, in a sixth implementation manner of the second aspect of the embodiment of the present application, the third determining unit includes:

A second selection subunit, configured to select the first confidence level and the second confidence level according to the priority ordering of the focusing methods when the focusing method of the first focusing information and the focusing method of the second focusing information are different The optional FOV corresponding to the confidence level with a higher priority among the confidence levels is used as the second target FOV.

This embodiment of the present application describes how to extract information from the first selectable FOV and the second selectable FOV according to the first confidence level in the first focus information and the second confidence level in the second focus information Determining the second target FOV of the second camera enriches the specific implementation of the embodiments of the present application.

In a possible design, in a seventh implementation manner of the second aspect of the embodiments of the present application, the FOV correspondence is a FOV correspondence table between the first camera and the second camera.

The embodiment of the present application specifically describes the existence mode of the FOV correspondence, and adds the specific implementation mode of the embodiment.

In a possible design, in an eighth implementation manner of the second aspect of the embodiments of the present application, at least one of the first focus information and the second focus information is obtained by any one of the following: a phase difference Focusing method, laser focusing method or contrast focusing method.

The embodiments of the present application describe the focusing methods of the first focusing information and the second focusing information, which increases the operability of the embodiments of the present application.

A third aspect of the embodiments of the present application provides a terminal for implementing dual-camera focusing, where the dual-camera includes a first camera and a second camera, including:

processor and memory;

the memory stores operation instructions;

The processor is configured to perform the following steps by invoking the operation instruction stored in the memory:

Obtain the first focus information of the first camera and the second focus information of the second camera;

Determine a first target field of view FOV of the first camera according to the first focus information, and determine a first selectable FOV of the second camera according to the second focus information;

Determine the second optional FOV of the second camera according to the FOV correspondence between the first camera and the second camera, and the first target FOV;

According to the first confidence level in the first focus information and the second confidence level in the second focus information, it is determined from the first optional FOV and the second optional FOV that the a second target FOV, the first confidence level is used to represent the reliability of the first focus information, and the second confidence level is used to represent the reliability of the second focus information;

The first camera is controlled to move to a position corresponding to the first target FOV, and the second camera is controlled to move to a position corresponding to the second target FOV.

The terminal in the embodiment of the present application realizes the linkage adjustment of the dual cameras according to the corresponding relationship between the first camera and the second camera, which can improve the focusing efficiency of the cameras, thereby improving the user experience.

Yet another aspect of the present application provides a computer-readable storage medium, where instructions are stored in the computer-readable storage medium, which, when executed on a computer, cause the computer to perform the methods described in the above aspects.

Yet another aspect of the present application provides a computer program product comprising instructions which, when run on a computer, cause the computer to perform the methods of the above aspects.

Description of drawings

1 is a schematic diagram of a camera acquiring FOV in an embodiment of the present invention;

Fig. 2 is the relational diagram of camera position and FOV in the embodiment of the present invention;

3 is a frame diagram of a terminal in an embodiment of the present invention;

4 is a schematic diagram of an embodiment of a focusing method for dual cameras in an embodiment of the present invention;

FIG. 5 is a schematic diagram of another embodiment of a focusing method for dual cameras in an embodiment of the present invention;

FIG. 6 is a schematic diagram of an embodiment of a terminal in an embodiment of the present invention;

FIG. 7 is a schematic diagram of another embodiment of a terminal in an embodiment of the present invention.

Detailed ways

Embodiments of the present application provide a dual camera focusing method and terminal, which are used to improve the focusing efficiency of the cameras.

The terms "first", "second", "third", "fourth", etc. (if any) in the description and claims of this application and the above-mentioned drawings are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It is to be understood that data so used may be interchanged under appropriate circumstances so that the embodiments described herein can be practiced in sequences other than those illustrated or described herein. Furthermore, the terms "comprising" and "having" and any variations thereof, are intended to cover non-exclusive inclusion, for example, a process, method, system, product or device comprising a series of steps or units is not necessarily limited to those expressly listed Rather, those steps or units may include other steps or units not expressly listed or inherent to these processes, methods, products or devices.

As shown in FIG. 1 , the terminal in this embodiment of the present invention may acquire a field of view (field of view, FOV) through a camera. The definition of FOV is: the angle formed by the two edges of the maximum range of the object image of the measured target that can pass through the lens with the camera of the optical instrument as the vertex. The angle aob shown in Figure 1 is the field of view. The size of the field of view determines the field of view of the optical instrument. The larger the field of view, the larger the field of view and the smaller the optical magnification. In layman's terms, the target object will not be contained in the lens beyond this angle.

As shown in Figure 2, the change of the position of the camera will bring about the change of FOV. When the camera moves to the left, the FOV becomes smaller, and when the camera moves to the right, the FOV becomes larger. As the camera is pushed from macro to infinity, the FOV increases monotonically and non-linearly.

The frame diagram of the terminal in the embodiment of the present invention is shown in FIG. 3 . The terminal includes: a network device 301, an input unit 302, an I/O interface 303, a display unit 304, an expansion card 305, a processor 306, an image processing unit 307, Power supply 308, RF circuit 309, memory 310, camera 311 and other components. Those skilled in the art can understand that the structure of the mobile phone shown in FIG. 3 does not constitute a limitation on the mobile phone, and may include more or less components than the one shown, or combine some components, or arrange different components.

The functions of each component of the terminal are described below with reference to Figure 3:

The network device 301 is used to help users send and receive emails, browse web pages, access streaming media, etc. It provides users with wireless broadband Internet access. For example, network device 301 may be a modem or a baseband processor.

The input unit 302 is used for receiving input digital or character information, and generating key signal input related to user setting and function control of the mobile phone. The input unit 302 may be a keyboard, a touch screen, a touch pad, or the like.

The I/O port 303 is responsible for realizing that the processor 306 connects the I/O circuit and peripheral devices through the system bus. The peripheral circuits can be various peripherals, such as earphones or chargers.

The display unit 304 is used to display information input by the user or information provided to the user and various menus of the mobile phone. The display unit 304 may be various types of screens, including a touch screen.

The audio circuit 305 can convert the received audio data into an electrical signal.

The processor 306 is used to control the operation of the terminal and perform arithmetic processing operations required by various types of terminals.

The image processing unit 307 is configured to process the image information obtained by the camera 311, or execute the user's image processing instruction.

The power supply 308 is used to provide power to the terminal. For example, power supply 308 is a power management circuit.

The RF circuit 309 is used for receiving and transmitting wireless signals in the process of sending and receiving information or during a call, and can cooperate with the network device 301 to work. The wireless signal may be a cellular wireless signal or a short-range wireless signal, or the like.

The memory 310 is used to store software programs and modules.

The camera 311 is used to obtain information such as images, for example, to perform shooting.

The focusing method of the dual cameras in this embodiment is described in detail below, wherein the dual cameras include a first camera and a second camera;

Referring to FIG. 4, an embodiment of the focusing method of the dual cameras in the embodiment of the present invention includes:

401. Acquire first focus information of a first camera and second focus information of a second camera.

In this embodiment, when the first camera and/or the second camera captures the generation of image information (such as camera activation, binocular synthesis, blur function activation, etc.), or when a device such as a gyroscope inside the terminal senses that the terminal rotates , the processor in the terminal will instruct the first camera and the second camera to start focusing, and obtain the first focusing information through the first camera, and obtain the second focusing information through the second camera, wherein the focusing information is used for the cameras to focus, and the focusing information Including confidence, FOV difference value, and current FOV value, etc., where confidence is used to represent the reliability of the focus information.

Focus information may be generated by a camera, which may include optics, mechanical structures (eg, motors), sensors, and processing circuitry. Specifically, the processing circuit may generate focus information according to a preset manner. The algorithm or method for generating the focus information can be provided by camera providers existing in the market, and different camera providers usually have different technologies to realize the generation of the focus information. For example, at least one of the first focusing information and the second focusing information in this embodiment is obtained by any one of the following: a phase difference focusing method, a laser focusing method, or a contrast focusing method.

402. Obtain the first current FOV and the first FOV difference of the first camera from the first focusing information, and obtain the second current FOV and the second FOV difference from the second focusing information.

In this embodiment, when the terminal acquires the first focus information of the first camera and the second focus information of the second camera, it will extract the first current FOV of the first camera from the above-mentioned first focus information, and pre- The preset focusing algorithm obtains the first FOV difference value of the first camera according to the first focusing information, and extracts the second current FOV of the second camera from the above-mentioned second focusing information, and uses the preset focusing algorithm according to the second focusing information. obtaining the second FOV difference and the second FOV difference of the second camera, wherein the focusing algorithm can obtain the FOV difference according to the focusing information;

403. Determine the first target FOV of the first camera according to the first current FOV and the first FOV difference, and determine the first selectable FOV of the second camera according to the second current FOV and the second FOV difference.

In this embodiment, after acquiring the first current FOV, the first FOV difference, the second current FOV, and the second FOV difference, the terminal determines the first camera according to the first current FOV and the first FOV difference The target FOV is the first target FOV, and the first optional FOV of the second camera is determined according to the second current FOV and the second FOV difference. The method for determining the first target FOV is: α=β+χ, where, α is the first target FOV, β is the first current FOV, and χ is the first FOV difference; the method for determining the first optional FOV is: δ=ε+φ, where δ is the first optional FOV, and ε is The second current FOV, φ is the second FOV difference.

404. Determine a second optional FOV of the second camera according to the FOV correspondence between the first camera and the second camera and the first target FOV.

In this embodiment, the FOV correspondence between the first camera and the second camera is the FOV correspondence table between the first camera and the second camera. In addition to storing the FOV correspondence between the first camera and the second camera, the FOV correspondence table also stores the FOV correspondence between the first camera and the second camera. There is a correspondence between FOV and camera position, and the FOV correspondence table is shown in Table 1:

Table 1:

When the first target FOV of the first camera is 71, it can be known by searching the FOV corresponding table that the FOV of the second camera is 68.5 at this time, that is, the second optional FOV is 68.5.

405. When the difference between the first selectable FOV and the second selectable FOV is greater than the preset value, determine the second selectable FOV from the first selectable FOV and the second selectable FOV according to the first confidence level and the second confidence level. target FOV.

In this embodiment, when the value of the first selectable FOV of the second camera is obtained from the second focus information, the value of the first optional FOV of the second camera is 67, and the second camera is obtained by the corresponding relationship between the FOVs of the first camera and the second camera, and the first target FOV. When the second selectable FOV of the It is not appropriate that there must be one FOV in the second optional FOV. In this case, it is necessary to select the FOV from the first optional FOV and the second In the optional FOV, the second target FOV of the second camera is determined, wherein the first confidence level is used to represent the reliability of the first focus information, and the second confidence level is used to represent the reliability of the second focus information.

Wherein, if the focusing method of the first focusing information and the focusing method of the second focusing information are the same, at this time, the optional FOV corresponding to the larger of the first confidence level and the second confidence level is selected as the target of the second camera FOV, that is, the second target FOV; but if the values of the first confidence level and the second confidence level are both lower than the threshold (the confidence level lower than the threshold indicates that the reliability of the focus information is low), the terminal needs to obtain the first camera and/or For the focusing information corresponding to other focusing modes of the second camera, steps 401 to 406 are executed according to the newly acquired focusing information.

If the focusing mode of the first focusing information and the focusing mode of the second focusing information are different, then select the one corresponding to the first confidence level and the confidence level with a higher priority in the second confidence level according to the priority ordering of the focusing modes. The FOV can be selected as the second target FOV, wherein the priority of the focusing method is: phase difference focusing method>laser focusing method>contrast focusing method, that is, if the focusing method of the first focusing information is the phase difference focusing method, the second The focusing method of the focusing information is the laser focusing method. Since the priority of the phase difference focusing method is higher than that of the laser focusing method, at this time, the optional FOV corresponding to the first focusing information is selected as the target FOV of the second camera, that is, Second target FOV,

It should be noted that, in this embodiment, at least one camera corresponds to at least two focusing modes. For example, the focusing method may be a phase difference focusing method, a laser focusing method or a contrast focusing method. Each focusing mode is already a relatively mature traditional technology in the field, and details are not described in this embodiment.

It should be noted that the preset value mentioned in this embodiment is determined according to the characteristics of the camera, and may be 1 or other values, which are not specifically limited here.

It should be noted that, if the difference between the first selectable FOV and the second selectable FOV is not greater than the preset value, the terminal may directly determine the first selectable FOV as the second target FOV of the second camera.

406. Control the first camera to move to a position corresponding to the first target FOV, and control the second camera to move to a position corresponding to the second target FOV.

In this embodiment, the first camera is equipped with a first motor, and the second camera is equipped with a second motor. After the terminal determines the first target FOV and the second target FOV, the terminal will control the first motor to push the first camera to The position corresponding to the first target FOV is controlled and the second motor is controlled to push the second camera to the position corresponding to the second target FOV, wherein the corresponding relationship between the FOV and the position of the camera is shown in Table 1 in step 403 .

It should be noted that, the first camera and the second camera in this embodiment can be interchanged.

In this embodiment, according to the FOV correspondence between the first camera and the second camera, the linkage adjustment of the dual cameras is realized, inappropriate search steps are reduced, the focusing efficiency of the cameras can be improved, and the user experience can be improved.

Referring to FIG. 5 , another embodiment of the focusing method of the dual cameras in the embodiment of the present invention includes:

501. Acquire first focus information of a first camera and second focus information of a second camera.

502. Obtain the first current FOV and the first FOV difference of the first camera from the first focusing information, and obtain the second current FOV and the second FOV difference from the second focusing information.

503. Determine the first target FOV of the first camera according to the first current FOV and the first FOV difference, and determine the first selectable FOV of the second camera according to the second current FOV and the second FOV difference.

504. Determine a second optional FOV of the second camera according to the FOV correspondence between the first camera and the second camera and the first target FOV.

In this embodiment, steps 501 to 504 are similar to 401 to 404 in FIG. 4 , and details are not repeated here.

505. When the moving direction indicated by the first selectable FOV is opposite to the moving direction indicated by the second selectable FOV, select from the first selectable FOV and the second selectable FOV according to the first confidence level and the second confidence level. A second target FOV is determined.

In this embodiment, when the terminal obtains from the correspondence between the FOV and the position of the camera, the moving direction indicated by the first optional FOV is opposite to the moving direction indicated by the second optional FOV (for example, the second camera The optional FOV moves to the left, according to when the second optional FOV moves to the right). At this time, it means that the focusing strategies of the first camera and the second camera are contradictory, and there must be one focusing direction that is wrong, then according to the first confidence The second target FOV is determined from the first optional FOV and the second optional FOV, wherein the first confidence is used to characterize the reliability of the first focus information, and the second confidence is used to characterize the first 2 How reliable the focus information is.

Wherein, if the focusing method of the first focusing information and the focusing method of the second focusing information are the same, at this time, the optional FOV corresponding to the larger of the first confidence degree and the second confidence degree is selected as the target of the second camera FOV, that is, the second target FOV; but if the values of the first confidence level and the second confidence level are both lower than the threshold (the confidence level lower than the threshold indicates that the reliability of the focus information is low), the terminal needs to obtain the first camera and/or For the focusing information corresponding to other focusing modes of the second camera, steps 401 to 406 are executed according to the newly acquired focusing information.

If the focusing mode of the first focusing information and the focusing mode of the second focusing information are different, then select the one corresponding to the first confidence level and the confidence level with a higher priority in the second confidence level according to the priority ordering of the focusing modes. The FOV can be selected as the second target FOV, wherein the priority of the focusing method is: phase difference focusing method>laser focusing method>contrast focusing method, that is, if the focusing method of the first focusing information is the phase difference focusing method, the second The focusing method of the focusing information is the laser focusing method. Since the priority of the phase difference focusing method is higher than that of the laser focusing method, at this time, the optional FOV corresponding to the first focusing information is selected as the target FOV of the second camera, that is, Second target FOV,

It should be noted that, in this embodiment, at least one camera corresponds to at least two focusing modes. For example, the focusing method may be a phase difference focusing method, a laser focusing method or a contrast focusing method. Each focusing mode is already a relatively mature traditional technology in the field, and details are not described in this embodiment.

It should be noted that the preset value mentioned in this embodiment is determined according to the characteristics of the camera, and may be 1 or other values, which are not specifically limited here.

506. Control the first camera to move to a position corresponding to the first target FOV, and control the second camera to move to a position corresponding to the second target FOV.

In this embodiment, step 506 is similar to step 406 in FIG. 4 , and details are not repeated here.

In this embodiment, according to the FOV correspondence between the first camera and the second camera, the linkage adjustment of the dual cameras is realized, the cameras can reduce the wrong search direction of the cameras, improve the focusing efficiency of the cameras, and thus improve the user experience.

In the above embodiment, the confidence level is included in the focusing information, and the focusing information is generated during the focusing process of the camera. Through different focusing methods, such as the aforementioned phase difference focusing method, laser focusing method or contrast focusing method The camera can form the corresponding focusing information, but the focusing information obtained by different focusing methods may be different, and the confidence in the focusing information corresponding to any focusing method is used to represent the reliability of the focusing information. In each focusing mode, the process of acquiring the focusing information including the confidence level is the prior art, which can be provided by the camera provider, which is not within the scope of discussion of this application.

The above embodiments describe in detail the focusing method of the dual cameras in the embodiment of the present invention, and the terminal in the embodiment of the present invention is described in detail below.

Please refer to FIG. 6. FIG. 6 is an embodiment of a terminal for implementing dual-camera focusing in an embodiment of the present invention, wherein the dual-camera includes a first camera and a second camera, and this embodiment includes:

an acquisition unit 601, configured to acquire first focus information of the first camera and second focus information of the second camera;

A first determining unit 602, configured to determine the first target field of view FOV of the first camera according to the first focusing information, and determine the first optional FOV of the second camera according to the second focusing information;

A second determining unit 603, configured to determine the second optional FOV of the second camera according to the FOV correspondence between the first camera and the second camera, and the first target FOV;

The third determining unit 604 is configured to determine the second camera's second camera from the first selectable FOV and the second selectable FOV according to the first confidence in the first focus information and the second confidence in the second focus information Target FOV, the first confidence level is used to represent the reliability of the first focus information, and the second confidence level is used to represent the reliability of the second focus information;

The control unit 605 is configured to control the first camera to move to a position corresponding to the first target FOV, and to control the second camera to move to a position corresponding to the second target FOV.

Please refer to FIG. 7. FIG. 7 is another embodiment of a terminal for implementing dual-camera focusing in an embodiment of the present invention, wherein the dual-camera includes a first camera and a second camera, and this embodiment includes:

an acquisition unit 701, configured to acquire first focus information of the first camera and second focus information of the second camera;

A first determining unit 702, configured to determine the first target field of view FOV of the first camera according to the first focusing information, and determine the first optional FOV of the second camera according to the second focusing information;

Wherein, the first determining unit 702 includes:

The first obtaining subunit 7021 is used to obtain the first current FOV and the first FOV difference of the first camera from the first focusing information, and obtain the second current FOV and the second FOV difference from the second focusing information;

The third determination subunit 7022 is configured to determine the first target FOV of the first camera according to the first current FOV and the first FOV difference, and determine the first optional FOV of the second camera according to the second current FOV and the second FOV difference FOV.

A second determining unit 703, configured to determine the second optional FOV of the second camera according to the FOV correspondence between the first camera and the second camera, and the first target FOV;

A third determining unit 704, configured to determine the second camera of the second camera from the first selectable FOV and the second selectable FOV according to the first confidence level in the first focus information and the second confidence level in the second focus information Target FOV, the first confidence level is used to represent the reliability of the first focus information, and the second confidence level is used to represent the reliability of the second focus information;

Wherein, the third determining unit 704 further includes:

The first determination subunit 7041 is configured to, when the difference between the first selectable FOV and the second selectable FOV is greater than a preset value, select the first selectable FOV and the second selectable FOV according to the first confidence Determine the second target FOV in the optional FOV;

and / or,

The second determination subunit 7042 is configured to, when the moving direction indicated by the first selectable FOV is opposite to the moving direction indicated by the second selectable FOV, select the and a second selectable FOV to determine a second target FOV.

and / or,

The first selection subunit 7043 is configured to select the optional FOV corresponding to the larger of the first confidence level and the second confidence level as the The second target FOV;

and / or,

The second selection subunit 7044 is configured to select, according to the priority ordering of the focusing methods, when the focusing method of the first focusing information and the focusing method of the second focusing information are different, the first confidence level and the second confidence level have the higher confidence level. The optional FOV corresponding to the confidence level of the priority is used as the second target FOV.

The control unit 705 is configured to control the first camera to move to a position corresponding to the first target FOV, and to control the second camera to move to a position corresponding to the second target FOV.

The fourth determining unit 706 is configured to determine the first selectable FOV as the second target FOV of the second camera when the difference between the first selectable FOV and the second selectable FOV is not greater than a preset value.

It should be noted that, in the above embodiments, it may be implemented in whole or in part by software, hardware, firmware, or any combination thereof. When implemented in software, it can be implemented in whole or in part in the form of a computer program product.

A computer program product includes one or more computer instructions. When the computer program instructions are loaded and executed on a computer, the procedures or functions according to the embodiments of the present invention result in whole or in part. The computer may be a general purpose computer, a special purpose computer, a computer network, or other programmable device. Computer instructions may be stored in or transmitted from one computer-readable storage medium to another computer-readable storage medium, for example, the computer instructions may be transmitted from a website site, computer, server, or data center over a wire (e.g. coaxial cable, fiber optic, digital subscriber line (DSL)) or wireless (eg, infrared, wireless, microwave, etc.) to another website site, computer, server, or data center. The computer-readable storage medium can be any available medium that can be stored by a computer or a data storage device such as a server, a data center, etc. that includes one or more available media integrated. Useful media may be magnetic media (eg, floppy disk, hard disk, magnetic tape), optical media (eg, DVD), or semiconductor media (eg, Solid State Disk (SSD)), among others.

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

The integrated unit, if implemented in the form of a software functional unit and sold or used as an independent product, may be stored in a computer-readable storage medium. Based on this understanding, the technical solutions of the present application can be embodied in the form of software products in essence, or the parts that contribute to the prior art, or all or part of the technical solutions, and the computer software products are stored in a storage medium , including several instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) to execute 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, removable hard disk, Read-Only Memory (ROM, Read-Only Memory), Random Access Memory (RAM, Random Access Memory), magnetic disk or optical disk and other media that can store program codes.

In an example, in the terminal embodiments corresponding to FIG. 6 and FIG. 7 , the terminal may be a software device or a hardware device, which is used to realize the focusing of the dual cameras. When the terminal is a hardware device that does not need to run software, each unit or sub-unit mentioned above may be an integrated circuit unit for implementing relevant arithmetic processing, that is, each unit or sub-unit includes the required Circuit structure, such as digital circuit, gate circuit or analog circuit, etc.

In another example, the terminal may include hardware that runs software instructions, see FIG. 3 . The processor 306 and memory 310 of FIG. 3 will now be described in detail.

Memory 310 may include read-only memory and random access memory, and provides instructions and data to processor 306 . A part of the memory 310 may further include a non-volatile random access memory (full name in English: Non-Volatile Random Access Memory, abbreviation: NVRAM).

Memory 310 stores any of the following elements, such as executable modules or data structures, or a subset thereof, or an extended set thereof:

Operation instructions: including various coded operation instructions, used to realize various operations;

Operating System: Includes various system programs for implementing various basic services and handling hardware-based tasks.

In the embodiment of the present invention, the memory 310 may store an instruction program, and the processor 306 is configured to read the instruction program and execute it under the driving of the instruction program:

Obtain the first focus information of the first camera and the second focus information of the second camera;

Determine the first target field of view FOV of the first camera according to the first focus information, and determine the first optional FOV of the second camera according to the second focus information;

Determine the second optional FOV of the second camera according to the FOV correspondence between the first camera and the second camera, and the first target FOV;

The second target FOV of the second camera is determined from the first selectable FOV and the second selectable FOV according to the first confidence level in the first focus information and the second confidence level in the second focus information, and the first confidence level is determined by: In order to characterize the reliability of the first focus information, the second confidence is used to characterize the reliability of the second focus information;

The first camera is controlled to move to a position corresponding to the first target FOV, and the second camera is controlled to move to a position corresponding to the second target FOV.

The processor 306 controls the operation of the terminal 8, and the processor 306 may be, for example, a central processing unit (full name in English: Central Processing Unit, abbreviation: CPU). The processor 306 in the terminal 8 can integrate an image signal processor (full name in English: Image Signal Process, abbreviation: ISP), and the terminal can also have an external ISP, and the processor 306 controls the ISP to perform image signal processing operations. In another embodiment, the processor 306 may be the ISP.

Memory 310 may include read-only memory and random access memory, and provides instructions and data to processor 306 . A portion of memory 310 may also include NVRAM. In a specific application, various components of the terminal 8 may be coupled together through a bus system, where the bus system may include a power bus, a control bus, a status signal bus, and the like in addition to a data bus.

The methods disclosed in the above embodiments of the present invention may be applied to the processor 306 or implemented by the processor 306 . The processor 306 may be an integrated circuit chip with signal processing capability. In the implementation process, each step of the above-mentioned method can be completed by an integrated logic circuit of hardware in the processor 306 or an instruction in the form of software. The above-mentioned processor 306 may be a general-purpose processor, a digital signal processor (full English name: Digital Signal Processing, English abbreviation: DSP), an application-specific integrated circuit (full English name: Application Specific Integrated Circuit, English abbreviation: ASIC), ready-made programmable Gate Array (English full name: Field-Programmable Gate Array, English abbreviation: FPGA) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components. Various methods, steps, and logical block diagrams disclosed in the embodiments of the present invention can 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 method disclosed in conjunction with the embodiments of the present invention may be directly embodied as executed by a hardware decoding processor, or executed by a combination of hardware and software modules in the decoding processor. The software modules may be located in random access memory, flash memory, read-only memory, programmable read-only memory or electrically erasable programmable memory, registers and other storage media mature in the art. The storage medium is located in the memory 310, and the processor 306 reads the information in the memory 310, and completes the steps of the above method in combination with its hardware.

The related description of FIG. 3 can be understood by referring to the related description and effect of the method part in FIG. 4 and FIG. 5 , and details are not repeated here.

It should be noted that the terminal mentioned in the embodiments of the present application may be a processor in the mobile phone terminal or the mobile phone terminal itself.

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

In the several embodiments provided in this application, it should be understood that the disclosed system, apparatus and method may be implemented in other manners. For example, the apparatus 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 may be combined or Can be integrated into another system, or some features can be ignored, or not implemented. On the other hand, the shown or discussed mutual coupling or direct coupling or communication connection may be through some interfaces, indirect coupling or communication connection of devices or units, and may be in electrical, mechanical or other forms.

As mentioned above, the above embodiments are only used to illustrate the technical solutions of the present application, but not to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand: The technical solutions described in the embodiments are modified, or some technical features thereof are equivalently replaced; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions in the embodiments of the present application.

Claims (19)

1. A method for focusing of dual cameras, wherein the dual cameras comprise a first camera and a second camera, and the method comprises: Obtain the first focus information of the first camera and the second focus information of the second camera; Determine a first target field of view FOV of the first camera according to the first focus information, and determine a first selectable FOV of the second camera according to the second focus information; Determine the second optional FOV of the second camera according to the FOV correspondence between the first camera and the second camera, and the first target FOV; According to the first confidence level in the first focus information and the second confidence level in the second focus information, it is determined from the first optional FOV and the second optional FOV that the a second target FOV, the first confidence level is used to represent the reliability of the first focus information, and the second confidence level is used to represent the reliability of the second focus information; The first camera is controlled to move to a position corresponding to the first target FOV, and the second camera is controlled to move to a position corresponding to the second target FOV. 2 . The method according to claim 1 , wherein the method according to the first confidence level in the first focus information and the second confidence level in the second focus information is selected from the first Determining the second target FOV of the second camera in the FOV and the second optional FOV includes: When the difference between the first selectable FOV and the second selectable FOV is greater than a preset value, the first selectable FOV and the selected The second target FOV is determined from the second selectable FOV. 3. The method according to claim 2, wherein the method further comprises: If the difference between the first selectable FOV and the second selectable FOV is not greater than the preset value, determining the first selectable FOV as the second target of the second camera FOV. 4 . The method according to claim 1 , wherein the method according to the first confidence level in the first focus information and the second confidence level in the second focus information is selected from the first Determining the second target FOV of the second camera in the FOV and the second optional FOV includes: When the moving direction indicated by the first selectable FOV is opposite to the moving direction indicated by the second selectable FOV, according to the first confidence level and the second confidence level The second target FOV is determined from the FOV and the second selectable FOV. The method according to any one of claims 1 to 4, wherein the determining the first target FOV of the first camera according to the first focusing information, and determining the first target FOV according to the second focusing information The first selectable FOV of the second camera includes: Obtain the first current FOV and the first FOV difference of the first camera from the first focus information, and obtain the second current FOV and the second FOV difference from the second focus information; The first target FOV of the first camera is determined according to the first current FOV and the first FOV difference, and the first target FOV of the second camera is determined according to the second current FOV and the second FOV difference. An optional FOV. 6. The method according to any one of claims 1 to 4, wherein the first confidence level in the first focusing information and the second confidence level in the second focusing information are calculated from Determining the second target FOV of the second camera in the first selectable FOV and the second selectable FOV includes: If the focusing method of the first focusing information and the focusing method of the second focusing information are the same, the optional FOV corresponding to the larger of the first confidence level and the second confidence level is selected as the Describe the second target FOV. 7. The method according to any one of claims 1 to 4, characterized in that, according to the first confidence in the first focusing information and the second confidence in the second focusing information from Determining the second target FOV of the second camera in the first selectable FOV and the second selectable FOV includes: If the focusing method of the first focusing information and the focusing method of the second focusing information are different, select the first confidence level and the second confidence level with a higher priority according to the priority order of the focusing methods The optional FOV corresponding to the confidence level of the level is used as the second target FOV. 8 . The method according to claim 1 , wherein the FOV correspondence is a FOV correspondence table between the first camera and the second camera. 9 . 9. The method according to any one of claims 1 to 4, wherein at least one of the first focusing information and the second focusing information is obtained by any one of the following: a phase difference focusing method, Laser focus or contrast focus. 10. A terminal for realizing dual-camera focusing, wherein the dual-camera comprises a first camera and a second camera, and the terminal comprises: an acquisition unit, configured to acquire the first focus information of the first camera and the second focus information of the second camera; a first determining unit, configured to determine the first target field of view FOV of the first camera according to the first focusing information, and determine the first optional FOV of the second camera according to the second focusing information; a second determining unit, configured to determine the second optional FOV of the second camera according to the FOV correspondence between the first camera and the second camera, and the first target FOV; a third determining unit, configured to extract data from the first selectable FOV and the second selectable FOV according to the first confidence level in the first focus information and the second confidence level in the second focus information determining the second target FOV of the second camera, the first confidence level is used to represent the reliability of the first focus information, and the second confidence level is used to represent the reliability of the second focus information; A control unit, configured to control the first camera to move to a position corresponding to the first target FOV, and to control the second camera to move to a position corresponding to the second target FOV. 11. The terminal according to claim 10, wherein the third determining unit comprises: The first determination subunit is configured to, when the difference between the first selectable FOV and the second selectable FOV is greater than a preset value, determine the value from the selected value according to the first confidence level and the second confidence level. The second target FOV is determined from the first selectable FOV and the second selectable FOV. 12. The terminal according to claim 11, wherein the terminal further comprises: a fourth determining unit, configured to determine the first selectable FOV as the first selectable FOV when the difference between the first selectable FOV and the second selectable FOV is not greater than the preset value The second target FOV of the second camera. 13. The terminal according to claim 11, wherein the third determining unit comprises: A second determination subunit, configured to, when the moving direction indicated by the first selectable FOV is opposite to the moving direction indicated by the second selectable FOV, according to the first confidence level and the second confidence The second target FOV is determined from the first selectable FOV and the second selectable FOV. 14. The terminal according to any one of claims 11 to 13, wherein the first determining unit comprises: The first obtaining subunit is used to obtain the first current FOV and the first FOV difference value of the first camera from the first focusing information, and obtain the second current FOV and the second focusing information from the second focusing information. FOV difference; A third determination subunit, configured to determine the first target FOV of the first camera according to the first current FOV and the first FOV difference, and determine the first target FOV of the first camera according to the second current FOV and the second FOV difference A first selectable FOV for the second camera is determined. 15. The terminal according to any one of claims 11 to 13, wherein the third determining unit comprises: a first selection subunit, configured to select the larger of the first confidence level and the second confidence level when the focusing method of the first focusing information and the focusing method of the second focusing information are the same The corresponding optional FOV is used as the second target FOV. 16. The terminal according to any one of claims 11 to 13, wherein the third determining unit comprises: A second selection subunit, configured to select the first confidence level and the second confidence level according to the priority ordering of the focusing methods when the focusing method of the first focusing information and the focusing method of the second focusing information are different An optional FOV corresponding to a confidence level with a higher priority among the confidence levels is used as the second target FOV. The terminal according to any one of claims 11 to 13, wherein the FOV correspondence is a FOV correspondence table between the first camera and the second camera. 18. The terminal according to any one of claims 11 to 13, wherein at least one of the first focusing information and the second focusing information is obtained by any one of the following: a phase difference focusing method, Laser focus or contrast focus. 19. A terminal for realizing dual-camera focusing, wherein the dual-camera comprises a first camera and a second camera, comprising: processor and memory; the memory stores operation instructions; The processor is configured to perform the following steps by invoking the operation instructions stored in the memory: obtaining the first focus information of the first camera and the second focus information of the second camera; Determine a first target field of view FOV of the first camera according to the first focus information, and determine a first selectable FOV of the second camera according to the second focus information; Determine the second optional FOV of the second camera according to the FOV correspondence between the first camera and the second camera, and the first target FOV; According to the first confidence level in the first focus information and the second confidence level in the second focus information, it is determined from the first optional FOV and the second optional FOV that the a second target FOV, the first confidence level is used to represent the reliability of the first focus information, and the second confidence level is used to represent the reliability of the second focus information; The first camera is controlled to move to a position corresponding to the first target FOV, and the second camera is controlled to move to a position corresponding to the second target FOV.

Images