CN109788199B - Focusing method suitable for terminal with double cameras - Google Patents
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- CN109788199B CN109788199B CN201910092324.5A CN201910092324A CN109788199B CN 109788199 B CN109788199 B CN 109788199B CN 201910092324 A CN201910092324 A CN 201910092324A CN 109788199 B CN109788199 B CN 109788199B
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Abstract
The invention provides a focusing method suitable for a terminal with two cameras, which is used for solving the problem that the prior art can not provide a focusing method based on double-camera interaction. The method comprises the following steps: when the camera equipment is focused, simultaneously starting a first camera module to acquire first image information and starting a second camera module to acquire second image information; the first camera module is the same as the second camera module, and camera equipment of the first camera module and camera equipment of the second camera module are arranged along a preset direction which is parallel to the connecting line direction of eyeballs of two eyes of a user; determining first phase information according to the first image information, and determining second phase information according to the second image information; determining a phase difference from the first phase information and the second phase information.
Description
Technical Field
The invention relates to the technical field of intelligent terminals, in particular to a focusing method suitable for a terminal with double cameras.
Background
With the rapid development of intelligent terminals such as mobile phones or tablet computers, mobile terminals provide more and more help for users in the aspects of life, work, entertainment and the like. Among them, the shooting function has become an indispensable part of the mobile terminal, and as the quality of life of people improves, people have higher and higher requirements for the shooting effect, and therefore, the focusing effect in the shooting process is also more and more important.
In the prior art, when focusing is performed, one camera is often used for focusing, or two cameras are independently used for focusing, that is, the two cameras do not have an obvious interaction process. Because there is not interaction between two cameras, it is very easy for one camera to make a video recording quickly stable, and the other camera has a phenomenon of largely pulling the bellows (namely, the camera searches back and forth, and the user sees that the interface is obviously clear and fuzzy).
In summary, the prior art cannot provide a focusing method based on dual-camera interaction.
Disclosure of Invention
The invention provides a focusing method suitable for a terminal with two cameras, which is used for solving the problem that the prior art can not provide a focusing method based on double-camera interaction.
In one aspect, the present invention provides a focusing method for a terminal with two cameras, including:
when the camera equipment is focused, simultaneously starting a first camera module to acquire first image information and starting a second camera module to acquire second image information; the first camera module is the same as the second camera module, and camera equipment of the first camera module and camera equipment of the second camera module are arranged along a preset direction which is parallel to the connecting line direction of eyeballs of two eyes of a user;
determining first phase information according to the first image information, and determining second phase information according to the second image information;
determining a phase difference from the first phase information and the second phase information.
Further, all the pixel points in the first image information and the second image information are used for focusing.
Further, the determining the first phase information according to the first image information and the determining the second phase information according to the second image information, including:
determining a first light intensity distribution curve according to the first image information, and determining a second light intensity distribution curve according to the second image information;
the determining a phase difference from the first phase information and the second phase information comprises:
and determining the phase difference according to the first light intensity distribution curve and the second light intensity distribution curve.
Further, after determining the phase difference according to the first phase image and the second phase image, the method further includes:
and determining the moving direction and distance of the lens in the first camera module and/or the second camera module according to the phase difference so as to enable the camera equipment of the first camera module and/or the camera equipment of the second camera module to realize focusing.
On one hand, the embodiment of the invention also provides a terminal, which comprises a first camera module, a second camera module and a processor, wherein the first camera module is the same as the second camera module, the camera equipment of the first camera module and the camera equipment of the second camera module are arranged along a preset direction, and the preset direction is parallel to the connecting line direction of eyeballs of two eyes of a user;
the first camera module is used for acquiring first image information when the camera equipment is focused;
the first camera module is used for acquiring second image information when the camera equipment is focused;
the processor is used for simultaneously starting the first camera module and the second camera module;
the processor is further configured to determine first phase information according to the first image information, and determine second phase information according to the second image information; determining a phase difference from the first phase information and the second phase information.
Further, all the pixel points in the first image information and the second image information are used for focusing.
Further, the first phase information includes a first light intensity profile, the second phase information includes a second light intensity profile, and the processor is specifically configured to:
determining a first light intensity distribution curve according to the first image information, and determining a second light intensity distribution curve according to the second image information;
and determining the phase difference according to the first light intensity distribution curve and the second light intensity distribution curve.
Further, the processor is further configured to:
determining the moving direction and distance of the lens in the first camera module and/or the second camera module according to the phase difference;
the first camera module is further used for:
focusing according to the moving direction and the distance of the lens;
the second camera module is further used for:
and focusing according to the moving direction and the distance of the lens.
In one aspect, an embodiment of the present invention further provides a terminal device, which includes at least one processing unit and at least one storage unit, where the storage unit stores a computer program, and when the program is executed by the processing unit, the processing unit executes the above steps of the focusing method for a terminal with two cameras.
In one aspect, an embodiment of the present invention further provides a computer readable medium, which stores a computer program executable by an input device, and when the program is run on the input device, the program causes the input device to perform the above-mentioned steps suitable for the focusing method with the dual-camera terminal.
In the embodiment of the invention, the two camera modules arranged in parallel to the connecting line direction of the eyeballs of the two eyes of the user are used for simulating the left-eye visual information and the right-eye visual information of the human, the phase difference required by focusing can be conveniently and rapidly determined through the two imaging information of the two same camera modules, and compared with the prior art, the focusing of the two camera modules can be realized by utilizing the interaction of the two camera modules. In the embodiment of the present invention, all the pixel points in the first image information and the second image information are used for focusing, and compared with the prior art that some pixels in a sensor (sensor) need to be sacrificed so that some pixels cannot be imaged to realize focusing, all the pixel information of the pixels can be retained, thereby improving the imaging quality.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without inventive exercise.
FIG. 1 is a schematic diagram illustrating a focusing principle in the prior art;
FIG. 2 is a schematic diagram of a prior art sensor;
fig. 3 is a schematic structural diagram of a focusing method according to an embodiment of the present invention;
fig. 4 is a schematic position diagram of a first image capturing apparatus and a second image capturing apparatus according to an embodiment of the present invention;
fig. 5 is a schematic diagram of first phase information and second phase information provided by an embodiment of the invention;
FIG. 6 is a schematic structural diagram of a sensor according to an embodiment of the present invention;
fig. 7 is a schematic structural diagram of a terminal according to an embodiment of the present invention;
fig. 8 is a schematic structural diagram of a terminal device according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clearer, the present invention will be described in further detail with reference to the accompanying drawings, and it is apparent that the described embodiments are only a part of the embodiments of the present invention, not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The focusing method in the prior art is generally shown in fig. 1, a left-eye image and a right-eye image are obtained by a camera through an image sensor to determine a focusing phase difference, the structure of the image sensor is shown in fig. 2, a plurality of phase focusing pixels are constructed in the image sensor, and the pixels are specially processed to simulate human left-eye visual information and human right-eye visual information. However, in the prior art, partial pixel information is lost by using the phase focusing pixel, and the imaging quality is influenced.
The embodiment of the invention provides a focusing method suitable for a terminal with two cameras, as shown in fig. 3, comprising the following steps:
In the embodiment of the present invention, the camera module of the camera device refers to a combination of components such as a camera and a sensor related to camera shooting.
In step 301, as shown in fig. 4, a schematic diagram of a terminal is exemplarily given, where the terminal has two cameras, and the camera modules of the two cameras are identical, that is, the first camera and the second camera have the same camera module, and the first camera of the first camera module and the second camera of the second camera module are arranged along a direction parallel to a connecting line direction of eyeballs of two eyes of a user, for example, when the user holds the terminal to take a picture vertically, a connecting line of centers of the first camera and the second camera is parallel to a horizontal direction; if the user uses a conventional terminal for transverse photographing, the central connecting line of the first camera shooting device and the second camera shooting device is parallel to the vertical direction.
In step 301, when the image capturing apparatus performs focusing, the first camera and the second camera simultaneously acquire image information to form first image information and second image information, respectively, since the first image information is obtained by the first camera and the second image information is obtained by the second camera, the imaging process of the left (or right) eye of the user is simulated by the first image information, and the imaging process of the right (or left) eye of the user is simulated by the first image information, so that the imaging information of the left or right eye required in the focusing process can be obtained.
In step 302, first phase information may be determined from the first image information and second phase information may be determined from the second image information.
In the embodiment of the present invention, the first image information can form a kind of phase information similar to a "peak", and the second image information can also form a kind of phase information similar to a "peak", for example, as shown in fig. 5, the positions of the "peaks" caused by different focal lengths are also different, and the correct focal length can make the two peaks completely coincide.
In step 303, when the "peak" formed by the first image information completely coincides with the "peak" formed by the second image, i.e., focusing is completed, it is necessary to calculate the difference between the first phase information and the second phase information. As shown in fig. 5, the difference between the two "peaks" is the phase difference.
Optionally, in step 301, in the embodiment of the present invention, the first image information and the second image information may also be obtained by using a focusing method of a single image capturing apparatus in the prior art, for example, the left-eye image information and the right-eye image information may be obtained by a first camera, and the left-eye image information (or the right-eye image information) is taken as the first image information; the left-eye image information and the right-eye image information are acquired by the second camera, and the right-eye image information (or the left-eye image information) is regarded as the second image information.
Optionally, in the embodiment of the present invention, in order to improve imaging quality, as shown in fig. 6, in the embodiment of the present invention, a structure of the sensor is as shown in fig. 6, and all pixel points in the first image information and the second image information are used for focusing. By imaging with the sensor of fig. 6, all pixel information can be used, improving imaging quality.
Optionally, in the embodiment of the present invention, after the phase difference is determined, the moving direction and the distance of the lens in the first camera module and/or the second camera module may be determined according to the phase difference, so that the camera device of the first camera module and/or the camera device of the second camera module realize focusing. The terminal can obtain clear projection by controlling the lens to move the lens and eliminating the phase difference, so that automatic focusing and focusing success can be realized.
Based on the same technical concept, an embodiment of the present application provides a terminal, as shown in fig. 7, including: the system comprises a first camera module 701, a second camera module 702 and a processor 703, wherein the first camera module is the same as the first camera module 701 and the second camera module 702, a camera 70101 of the first camera module 701 and a camera 70201 of the second camera module 702 are arranged along a preset direction, and the preset direction is parallel to a connecting line direction of eyeballs of two eyes of a user;
the first camera module 701 is configured to acquire first image information when the camera 70101 is focused;
the first camera module 702 is configured to obtain second image information when the camera 70201 focuses;
a processor 703 for starting the first camera module 701 and the second camera module 702 at the same time;
the processor 703 is further configured to determine first phase information according to the first image information, and determine second phase information according to the second image information; a phase difference is determined from the first phase information and the second phase information.
Further, all the pixel points in the first image information and the second image information are used for focusing.
Further, the first phase information includes a first light intensity distribution curve, the second phase information includes a second light intensity distribution curve, and the processor 703 is specifically configured to:
determining a first light intensity distribution curve according to the first image information, and determining a second light intensity distribution curve according to the second image information;
further, the processor 703 is further configured to:
determining the moving direction and distance of the lens in the first camera module and/or the second camera module according to the phase difference;
the first camera module 701 is further configured to:
focusing according to the moving direction and the distance of the lens;
the second camera module 702 is further configured to:
and focusing according to the moving direction and the distance of the lens.
Based on the same technical concept, the terminal device provided in the embodiment of the present application, as shown in fig. 8, includes at least one processor 801 and a memory 802 connected to the at least one processor, and a specific connection medium between the processor 801 and the memory 802 is not limited in the embodiment of the present application, and the processor 801 and the memory 802 are connected through a bus in fig. 8 as an example. The bus may be divided into an address bus, a data bus, a control bus, etc.
In the embodiment of the present application, the memory 802 stores instructions executable by the at least one processor 801, and the at least one processor 801 may execute the steps included in the foregoing focusing method by executing the instructions stored in the memory 802.
The processor 801 is a control center of the electronic device, and may connect various parts of the electronic device by using various interfaces and lines, and determine a focusing method by executing or executing instructions stored in the memory 802 and calling data stored in the memory 802. Optionally, the processor 801 may include one or more processing units, and the processor 801 may integrate an application processor and a modem processor, wherein the application processor mainly handles operating systems, user interfaces, application programs, and the like, and the modem processor mainly handles wireless communications. It will be appreciated that the modem processor described above may not be integrated into the processor 601. In some embodiments, the processor 801 and the memory 802 may be implemented on the same chip, or in some embodiments, they may be implemented separately on separate chips.
The processor 801 may be a general-purpose processor, such as a Central Processing Unit (CPU), a digital signal processor, an Application Specific Integrated Circuit (ASIC), a field programmable gate array or other programmable logic device, discrete gate or transistor logic, discrete hardware components, or any combination thereof, configured to implement or perform the methods, steps, and logic blocks disclosed in the embodiments of the present Application. A general purpose processor may be a microprocessor or any conventional processor or the like. The steps of a method disclosed in connection with the embodiments of the present application may be directly implemented by a hardware processor, or may be implemented by a combination of hardware and software modules in a processor.
The present invention is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the invention. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
While preferred embodiments of the present invention have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. Therefore, it is intended that the appended claims be interpreted as including preferred embodiments and all such alterations and modifications as fall within the scope of the invention.
It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.
Claims (10)
1. A focusing method suitable for a terminal with two cameras is characterized by comprising the following steps:
when the camera equipment is focused, simultaneously starting a first camera module to acquire first image information and starting a second camera module to acquire second image information; the first camera module is the same as the second camera module, the camera equipment of the first camera module and the camera equipment of the second camera module are arranged along a preset direction, the preset direction is parallel to the connecting line direction of eyeballs of two eyes of a user, and the camera module of the camera equipment refers to the combination of a camera and a sensor component related to camera shooting;
determining first phase information according to all pixel points of the first image information, and determining second phase information according to all pixel points of the second image information;
and determining a phase difference according to the first phase information and the second phase information, wherein the phase difference is used for realizing focusing of the first camera module and the second camera module.
2. The method of claim 1, wherein all pixels in the first image information and the second image information are used for focusing.
3. The method of claim 1, wherein the first phase information comprises a first light intensity profile and the second phase information comprises a second light intensity profile, wherein determining the first phase information from the first image information and the second phase information from the second image information comprises:
determining a first light intensity distribution curve according to the first image information, and determining a second light intensity distribution curve according to the second image information;
the determining a phase difference from the first phase information and the second phase information comprises:
and determining the phase difference according to the first light intensity distribution curve and the second light intensity distribution curve.
4. The method of claim 1, wherein determining the phase difference from the first phase image and the second phase image further comprises:
and determining the moving direction and distance of the lens in the first camera module and/or the second camera module according to the phase difference so as to enable the camera equipment of the first camera module and/or the camera equipment of the second camera module to realize focusing.
5. A terminal is characterized by comprising a first camera module, a second camera module and a processor, wherein the first camera module is the same as the second camera module, camera equipment of the first camera module and camera equipment of the second camera module are arranged along a preset direction, the preset direction is parallel to a connecting line direction of eyeballs of two eyes of a user, and the camera module of the camera equipment refers to a combination of a camera and a sensor component related to camera shooting;
the first camera module is used for acquiring first image information when the camera equipment is focused;
the first camera module is used for acquiring second image information when the camera equipment is focused;
the processor is used for simultaneously starting the first camera module and the second camera module;
the processor is further configured to determine first phase information according to all pixel points of the first image information, and determine second phase information according to all pixel points of the second image information; and determining a phase difference according to the first phase information and the second phase information, wherein the phase difference is used for realizing focusing of the first camera module and the second camera module.
6. The terminal of claim 5, wherein all pixels in the first image information and the second image information are used for focusing.
7. The terminal of claim 5, wherein the first phase information comprises a first light intensity profile and the second phase information comprises a second light intensity profile, and wherein the processor is further configured to:
determining a first light intensity distribution curve according to the first image information, and determining a second light intensity distribution curve according to the second image information;
and determining the phase difference according to the first light intensity distribution curve and the second light intensity distribution curve.
8. The terminal of claim 5, wherein the processor is further configured to:
determining the moving direction and distance of the lens in the first camera module and/or the second camera module according to the phase difference;
the first camera module is further used for:
focusing according to the moving direction and the distance of the lens;
the second camera module is further used for:
and focusing according to the moving direction and the distance of the lens.
9. A terminal device, comprising at least one processing unit and at least one memory unit, wherein the memory unit stores a computer program which, when executed by the processing unit, causes the processing unit to carry out the steps of the method according to any one of claims 1 to 4.
10. A computer-readable medium, in which a computer program executable by a terminal device is stored, which program, when run on the terminal device, causes the terminal device to carry out the steps of the method according to any one of claims 1 to 4.
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| CN110475071B (en) * | 2019-09-19 | 2021-06-04 | 厦门美图之家科技有限公司 | Phase focusing method, phase focusing device, electronic equipment and machine-readable storage medium |
| CN110933305B (en) * | 2019-11-28 | 2021-07-20 | 维沃移动通信有限公司 | Electronic equipment and focusing method |
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| US8836767B2 (en) * | 2010-12-17 | 2014-09-16 | Samsung Electronics Co., Ltd | Imaging apparatus and imaging method |
| KR101773168B1 (en) * | 2011-07-21 | 2017-09-12 | 삼성전자주식회사 | Apparatus and method for controlling focus by image sensor for outputting phase difference signal |
| US20130057655A1 (en) * | 2011-09-02 | 2013-03-07 | Wen-Yueh Su | Image processing system and automatic focusing method |
| CN104730802B (en) * | 2015-03-27 | 2017-10-17 | 酷派软件技术（深圳）有限公司 | Calibration, focusing method and the system and dual camera equipment of optical axis included angle |
| CN104883556B (en) * | 2015-05-25 | 2017-08-29 | 深圳市虚拟现实科技有限公司 | 3 D displaying method and augmented reality glasses based on augmented reality |
| CN107026969A (en) * | 2016-02-01 | 2017-08-08 | 中兴通讯股份有限公司 | The determination method and device of phase difference |
| TWI621831B (en) * | 2016-12-26 | 2018-04-21 | 聚晶半導體股份有限公司 | Image capturing device and calibration method for phase detection auto focus thereof |
| CN109120839B (en) * | 2017-06-23 | 2020-10-16 | 华为技术有限公司 | Focusing method of double cameras and terminal |
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| CN103444184A (en) * | 2011-03-24 | 2013-12-11 | 富士胶片株式会社 | Color image sensor, imaging device, and control program for imaging device |
| CN103765591A (en) * | 2011-08-30 | 2014-04-30 | 富士胶片株式会社 | Solid-state imaging device and digital camera |
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