CN109120856B - Camera shooting method and device - Google Patents
Camera shooting method and device Download PDFInfo
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- CN109120856B CN109120856B CN201811260615.2A CN201811260615A CN109120856B CN 109120856 B CN109120856 B CN 109120856B CN 201811260615 A CN201811260615 A CN 201811260615A CN 109120856 B CN109120856 B CN 109120856B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
- H04N23/10—Cameras or camera modules comprising electronic image sensors; Control thereof for generating image signals from different wavelengths
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
- H04N23/60—Control of cameras or camera modules
- H04N23/67—Focus control based on electronic image sensor signals
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
- H04N23/70—Circuitry for compensating brightness variation in the scene
- H04N23/71—Circuitry for evaluating the brightness variation
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Abstract
The invention provides a camera shooting method and a device, which relate to the technical field of camera shooting, and the method comprises the following steps: after receiving a shooting instruction, acquiring first shooting information of a to-be-shot area by using a first camera; the first camera shooting information is color image information; if the environment brightness information corresponding to the first camera shooting information is smaller than a set threshold value, starting a second camera to obtain second camera shooting information of a to-be-shot area, wherein the second camera shooting information is black-and-white image information; and determining the image pickup information corresponding to the area to be picked up according to the first image pickup information and the second image pickup information. Compared with the prior art, the resolution is improved, and the user experience is improved.
Description
Technical Field
The present invention relates to the field of camera technologies, and in particular, to a camera shooting method and apparatus.
Background
With the advent of the internet era and the rise of social networks, the demand of people for displaying and sharing life is further enhanced, and the camera function of the terminal is also more and more widely applied, for example, a user can share videos obtained by shooting through the camera function of the terminal on a social platform to display and share life.
However, in the prior art, when the ambient light is dark, it is difficult to obtain a high-resolution image due to the limitation of the camera hardware device, so that when the ambient light is dark, the captured video is blurred, the resolution is poor, and the user experience is affected.
Disclosure of Invention
The invention provides an access control management method and device, which are used for solving the problems that in the prior art, when ambient light is dark, a video shot is fuzzy, resolution is poor, and user experience is influenced.
The embodiment of the invention provides a camera shooting method, which comprises the following steps:
after receiving a shooting instruction, acquiring first shooting information of a to-be-shot area by using a first camera; the first camera shooting information is color image information;
if the environment brightness information corresponding to the first camera shooting information is smaller than a set threshold value, starting a second camera to obtain second camera shooting information of a to-be-shot area, wherein the second camera shooting information is black-and-white image information;
and determining the image pickup information corresponding to the area to be picked up according to the first image pickup information and the second image pickup information.
In the embodiment of the present invention, when it is determined that the color camera is used to record the region to be photographed, the current ambient brightness information is less than the set threshold, which indicates that if the first camera is continuously used to perform photographing, the photographed video is blurred, the resolution is poor, and the user experience is affected, so that the second camera is started to record the black-and-white image information of the region to be photographed, and then the black-and-white image information and the color image information are synthesized to determine the image information of the region to be photographed.
Further, after the second camera is started to acquire the second camera information of the area to be photographed, the method further includes:
when the starting time of the second camera reaches the set time, the first camera is used for obtaining the ambient brightness corresponding to the current first camera shooting information;
and if the ambient brightness corresponding to the current first camera shooting information is determined to be not less than the set threshold value, closing the second camera.
In the embodiment of the invention, in order to reduce power consumption, after the second camera is determined not to be started at the current ambient brightness, the second camera is closed.
Further, the first camera acquires first camera information of the area to be photographed by using a first frame rate, the second camera acquires second camera information of the area to be photographed by using a second frame rate, and the second frame rate is less than or equal to the first frame rate.
In the embodiment of the invention, the frame rates of the first camera and the second camera are different, so that the power consumption can be effectively reduced.
Further, the ambient brightness information corresponding to the first image capturing information includes ambient brightness information corresponding to N pieces of sub-region information, where the N pieces of sub-region information constitute the first image capturing information, and the second frame rate is determined in the following manner, including:
determining M sub-region information smaller than the set threshold in the environment brightness information corresponding to the N sub-region information;
and determining the second frame rate according to the ratio of the M to the N.
In the embodiment of the present invention, the second frame rate is adjusted according to the ambient brightness information, and when the ambient brightness information changes, the second frame rate also changes.
Further, the second frame rate is determined by:
acquiring third camera information shot by the first camera at the time T by using the first frame rate and fourth camera information shot by the first camera at the time T + 1;
determining the change rate of the area to be shot according to the third shooting information and the fourth shooting information;
and determining the second frame rate according to the change rate.
In the embodiment of the invention, the second frame rate is adjusted according to the change rate of the area to be shot, and the second frame rate can be dynamically adjusted according to the change condition of the area to be shot, so that not only can the power consumption be reduced, but also ideal shooting information can be obtained.
An embodiment of the present invention further provides an image pickup apparatus, including:
the device comprises a color image information acquisition unit, a color image information acquisition unit and a color image information acquisition unit, wherein the color image information acquisition unit is used for acquiring first camera information of a to-be-photographed area by using a first camera after receiving a camera shooting instruction; the first camera shooting information is color image information;
the black-and-white image information acquisition unit is used for starting a second camera to acquire second camera information of a region to be shot if the ambient brightness information corresponding to the first camera information is determined to be smaller than a set threshold value, wherein the second camera information is black-and-white image information;
and the image pickup information determining unit is used for determining the image pickup information corresponding to the area to be picked up according to the first image pickup information and the second image pickup information.
In the embodiment of the present invention, when it is determined that the color camera is used to record the region to be photographed, the current ambient brightness information is less than the set threshold, which indicates that if the first camera is continuously used to perform photographing, the photographed video is blurred, the resolution is poor, and the user experience is affected, so that the second camera is started to record the black-and-white image information of the region to be photographed, and then the black-and-white image information and the color image information are synthesized to determine the image information of the region to be photographed.
Further, the black-and-white image information obtaining unit is specifically configured to:
when the starting time of the second camera reaches the set time, the first camera is used for obtaining the ambient brightness corresponding to the current first camera shooting information;
and if the ambient brightness corresponding to the current first camera shooting information is determined to be not less than the set threshold value, closing the second camera.
Further, the first camera acquires first camera information of the area to be photographed by using a first frame rate, the second camera acquires second camera information of the area to be photographed by using a second frame rate, and the second frame rate is less than or equal to the first frame rate.
Further, the ambient brightness information corresponding to the first image capture information includes ambient brightness information corresponding to N sub-area information, where the N sub-area information constitutes the first image capture information, and the black-and-white image information obtaining unit is specifically configured to:
determining M sub-region information smaller than the set threshold in the environment brightness information corresponding to the N sub-region information;
and determining the second frame rate according to the ratio of the M to the N.
Further, the black-and-white image information obtaining unit is specifically configured to:
acquiring third camera information shot by the first camera at the time T by using the first frame rate and fourth camera information shot by the first camera at the time T + 1;
determining the change rate of the area to be shot according to the third shooting information and the fourth shooting information;
and determining the second frame rate according to the change rate.
An embodiment of the present invention further provides an electronic device, including:
at least one processor; and the number of the first and second groups,
a memory communicatively coupled to the at least one processor; wherein the content of the first and second substances,
the memory stores instructions executable by the at least one processor to enable the at least one processor to perform the method of any one of the above embodiments.
Embodiments of the present invention also provide a non-transitory computer-readable storage medium storing computer instructions for causing a computer to perform the method of any one of the above embodiments.
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 flow chart of a camera shooting method according to an embodiment of the present invention;
fig. 2(a) is a schematic diagram of first image capture information provided in an embodiment of the present invention;
fig. 2(b) is a schematic diagram of second camera information provided in the embodiment of the present invention;
fig. 3 is a schematic diagram of a sub-area of first camera information according to an embodiment of the present invention;
fig. 4 is a schematic flowchart of a camera shooting method according to an embodiment of the present invention;
fig. 5 is a schematic structural diagram of an image capturing apparatus according to an embodiment of the present invention;
fig. 6 is a schematic structural diagram of an electronic 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.
In the embodiment of the present invention, the terminal refers to an intelligent terminal with a camera function, and includes a mobile phone, a tablet computer, an intelligent wearable device, and the like, and the terminal is provided with a camera for taking pictures and taking pictures.
The present invention provides an imaging method, as shown in fig. 1, including:
In step 101, after receiving a shooting instruction, a first camera is first started to acquire first shooting information of a region to be shot, and the first shooting information acquired by the first camera is color image information. In the embodiment of the present invention, it may be considered that before the instruction to stop shooting is received, the area shot by the terminal using the first camera is the area to be shot.
In step 102, when the ambient brightness corresponding to the first image information obtained by using the first camera is smaller than the set brightness threshold, it indicates that the current ambient brightness is dark and the image capturing effect is not good, so the second camera is started at this time, and the second camera is used to obtain the black-and-white image information of the area to be captured.
In the implementation of the present invention, it is assumed that after the second camera is started, the second camera and the first camera are used to shoot the region to be shot together, and the first shooting information and the second shooting information are obtained, the first shooting information can accurately record the color information of the focusing subject in the region to be shot, but the recording of the detail information and the edge information is poor, the black-and-white image information recorded by the second camera can better record the detail information and the edge information, fig. 2(a) is a frame in the first shooting information, fig. 2(b) is a frame in the second shooting information, and two frames of images are obtained at the same time, so that it can be seen that the second shooting information can better record the detail information and the edge information.
In fig. 2(a), except the zebra information of the focus area, the information of another zebra is blurred, and in fig. 2(b), except the zebra information of the focus area, the information of another zebra is clear.
In step 103, the first camera information and the second camera information are combined to obtain the camera information corresponding to the region to be photographed.
Optionally, in this embodiment of the present invention, starting from the start of the second camera, the first camera and the second camera each acquire N frames of images, and for each frame of image with the same time point, the color image and the black-and-white image are synthesized to form a new frame of image, where the N new frame of image are the image pickup information corresponding to the region to be picked up.
Optionally, in the embodiment of the present invention, the power consumption of the terminal may be increased by simultaneously turning on the two cameras, so in the embodiment of the present invention, the power consumption of the terminal is reduced by the following methods.
In a first mode
In the process of shooting, the change of weather or the change of light can influence ambient brightness, and when determining that the ambient brightness does not need to open the second camera, the second camera is closed, so that the power consumption of the terminal can be effectively reduced.
Mode two
The method in the first mode is further optimized, a timing time is set after the second camera starts to be started, when the timing time is reached, the brightness of the current shooting environment is obtained, and if the brightness of the current shooting environment is determined to be not smaller than the set threshold, the second camera does not need to be started, so that the second camera is closed.
Mode III
In the embodiment of the present invention, the first camera uses the first frame rate to capture the first camera information, and the second camera uses the second frame rate to capture the camera information.
In the embodiment of the present invention, the second frame rate may be adjusted by the ambient brightness information and the rate of change of the region to be imaged.
In the embodiment of the present invention, the first image information includes a plurality of sub-regions, for example, if a frame in the first image information is 40 × 40, the size of the sub-region may be 20 × 20, as shown in fig. 3, the frame image includes a first region, a second region, a third region, and a fourth region, the luminance information of the first region, the luminance information of the second region, the luminance information of the third region, and the luminance information of the fourth region are calculated, the number of the luminances in the four regions that are smaller than the set threshold is determined, and if the first region is smaller than the set threshold, it is determined that the ratio of the region smaller than the set threshold in the frame image to the total region is 25%, and the second frame rate is determined according to the ratio.
Optionally, a relationship between the ratio and the second frame rate is pre-stored, for example, when the ratio is 25%, the second frame rate is 15 frames.
Another method for adjusting the second frame rate is to determine the change rate of the area to be photographed by determining the change rate of the area to be photographed, obtain third photographing information, which is photographed by the first camera at the time point T using the first frame rate, and fourth photographing information, which is photographed by the first camera at the time point T +1, and determine the change rate of the area to be photographed according to the third photographing information and the fourth photographing information, that is, determine the second frame rate according to the change degree in the area to be photographed.
Optionally, a corresponding relationship between the change rate and the second frame rate is pre-stored, for example, the change rate is 35%, and the corresponding frame rate is 30.
Optionally, in step 103, if the first frame rate is different from the second frame rate, the frame images at the same time are synthesized, for example, the first frame rate is 1 second 1 frame, which is 60 frames per minute, and the second frame rate is 1 second 1 frame, which is 1 minute 30 frames per minute, which is 2 seconds 1 frame, and the frame images at 2 seconds, 4 seconds, and.
In order to better explain the embodiment of the present invention, an image capturing method provided by the embodiment of the present invention is described below through a specific implementation scenario.
In the embodiment of the present invention, the first frame rate is not changed and is 60 frames in 1 minute, and the initial frame rate used when the second camera is turned on is 60 frames in 1 minute, and the specific process is as shown in fig. 4:
Based on the same concept, an embodiment of the present invention further provides an imaging apparatus, as shown in fig. 5, including:
a color image information obtaining unit 501, configured to obtain first image information of an area to be imaged by using a first camera after receiving an image capturing instruction; the first camera shooting information is color image information;
a black-and-white image information obtaining unit 502, configured to start a second camera to obtain second image information of a region to be imaged if it is determined that the ambient brightness information corresponding to the first image information is smaller than a set threshold, where the second image information is black-and-white image information;
an image pickup information determining unit 503, configured to determine image pickup information corresponding to the area to be image picked up according to the first image pickup information and the second image pickup information.
Further, the black-and-white image information obtaining unit 502 is specifically configured to:
when the starting time of the second camera reaches the set time, the first camera is used for obtaining the ambient brightness corresponding to the current first camera shooting information;
and if the ambient brightness corresponding to the current first camera shooting information is determined to be not less than the set threshold value, closing the second camera.
Further, the first camera acquires first camera information of the area to be photographed by using a first frame rate, the second camera acquires second camera information of the area to be photographed by using a second frame rate, and the second frame rate is less than or equal to the first frame rate.
Further, the ambient brightness information corresponding to the first image capturing information includes ambient brightness information corresponding to N sub-area information, where the N sub-area information constitutes the first image capturing information, and the black-and-white image information obtaining unit 502 is specifically configured to:
determining M sub-region information smaller than the set threshold in the environment brightness information corresponding to the N sub-region information;
and determining the second frame rate according to the ratio of the M to the N.
Further, the black-and-white image information obtaining unit 502 is specifically configured to:
acquiring third camera information shot by the first camera at the time T by using the first frame rate and fourth camera information shot by the first camera at the time T + 1;
determining the change rate of the area to be shot according to the third shooting information and the fourth shooting information;
and determining the second frame rate according to the change rate.
An embodiment of the present invention provides an electronic 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 is caused to execute steps of an operation method. As shown in fig. 6, the schematic diagram of the hardware structure of the electronic device according to the embodiment of the present invention is shown, and the electronic device may be a desktop computer, a portable computer, a smart phone, a tablet computer, or the like. Specifically, the electronic device may include a memory 601, a processor 602, and a computer program stored on the memory, and the processor 602 implements the steps of any of the image capturing methods in the above embodiments when executing the program. Memory 601 may include, among other things, Read Only Memory (ROM) and Random Access Memory (RAM), and provides processor 602 with program instructions and data stored in memory 601.
An embodiment of the present application provides a computer program product comprising a computer program stored on a non-transitory computer-readable storage medium, the computer program comprising program instructions that, when executed by a computer, cause the computer to perform any of the above-mentioned image capturing methods.
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. An image pickup method, comprising:
after receiving a shooting instruction, acquiring first shooting information of a to-be-shot area by using a first camera; the first camera shooting information is color image information;
if the environment brightness information corresponding to the first camera shooting information is smaller than a set threshold value, starting a second camera to obtain second camera shooting information of a to-be-shot area, wherein the second camera shooting information is black-and-white image information;
determining shooting information corresponding to the area to be shot according to the first shooting information and the shooting information simultaneously acquired by the second camera;
the first camera acquires first shooting information of the area to be shot by using a first frame rate, the second camera acquires second shooting information of the area to be shot by using a second frame rate, the second frame rate is less than or equal to the first frame rate, and the second frame rate is determined at least according to environment brightness information corresponding to the first shooting information and/or the change rate of the area to be shot.
2. The method according to claim 1, wherein the step of starting the second camera to acquire the second camera information of the area to be photographed further comprises:
when the starting time of the second camera reaches the set time, the first camera is used for obtaining the ambient brightness corresponding to the current first camera shooting information;
and if the ambient brightness corresponding to the current first camera shooting information is determined to be not less than the set threshold value, closing the second camera.
3. The method according to claim 1, wherein the ambient brightness information corresponding to the first image capturing information includes ambient brightness information corresponding to N sub-area information, the N sub-area information constituting the first image capturing information, and the second frame rate is determined by:
determining M sub-region information smaller than the set threshold in the environment brightness information corresponding to the N sub-region information;
and determining the second frame rate according to the ratio of the M to the N.
4. The method of claim 1, wherein the second frame rate is determined by:
acquiring third camera information shot by the first camera at the time T by using the first frame rate and fourth camera information shot by the first camera at the time T + 1;
determining the change rate of the area to be shot according to the third shooting information and the fourth shooting information;
and determining the second frame rate according to the change rate.
5. An image pickup apparatus, comprising:
the device comprises a color image information acquisition unit, a color image information acquisition unit and a color image information acquisition unit, wherein the color image information acquisition unit is used for acquiring first camera information of a to-be-photographed area by using a first camera after receiving a camera shooting instruction; the first camera shooting information is color image information;
the black-and-white image information acquisition unit is used for starting a second camera to acquire second camera information of a region to be shot if the ambient brightness information corresponding to the first camera information is determined to be smaller than a set threshold value, wherein the second camera information is black-and-white image information;
the camera shooting information determining unit is used for determining camera shooting information corresponding to the area to be shot according to the first camera shooting information and the camera shooting information simultaneously acquired by the second camera;
the first camera acquires first shooting information of the area to be shot by using a first frame rate, the second camera acquires second shooting information of the area to be shot by using a second frame rate, the second frame rate is less than or equal to the first frame rate, and the second frame rate is at least determined by the black-and-white image information acquisition unit according to environment brightness information corresponding to the first shooting information and/or the change rate of the area to be shot.
6. The apparatus according to claim 5, wherein the monochrome image information obtaining unit is specifically configured to:
when the starting time of the second camera reaches the set time, the first camera is used for obtaining the ambient brightness corresponding to the current first camera shooting information;
and if the ambient brightness corresponding to the current first camera shooting information is determined to be not less than the set threshold value, closing the second camera.
7. The apparatus according to claim 5, wherein the ambient brightness information corresponding to the first image capture information includes ambient brightness information corresponding to N sub-area information, the N sub-area information constitutes the first image capture information, and the monochrome image information obtaining unit is specifically configured to:
determining M sub-region information smaller than the set threshold in the environment brightness information corresponding to the N sub-region information;
and determining the second frame rate according to the ratio of the M to the N.
8. The apparatus according to claim 5, wherein the monochrome image information obtaining unit is specifically configured to:
acquiring third camera information shot by the first camera at the time T by using the first frame rate and fourth camera information shot by the first camera at the time T + 1;
determining the change rate of the area to be shot according to the third shooting information and the fourth shooting information;
and determining the second frame rate according to the change rate.
9. An electronic device, comprising:
at least one processor; and the number of the first and second groups,
a memory communicatively coupled to the at least one processor; wherein the content of the first and second substances,
the memory stores instructions executable by the at least one processor to enable the at least one processor to perform the method of any one of claims 1-4.
10. A non-transitory computer readable storage medium storing computer instructions for causing a computer to perform the method of any one of claims 1 to 4.
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| CN110730310A (en) * | 2019-10-18 | 2020-01-24 | 青岛海信移动通信技术股份有限公司 | Camera exposure control method and terminal |
| CN114257786B (en) * | 2021-12-16 | 2023-04-07 | 珠海格力电器股份有限公司 | Monitoring method and device, intelligent cat eye and storage medium |
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| CN101145327A (en) * | 2006-09-15 | 2008-03-19 | 株式会社半导体能源研究所 | Display device and method of driving the same |
| CN105744241A (en) * | 2016-04-07 | 2016-07-06 | 珠海格力电器股份有限公司 | Shooting method, shooting apparatus and electronic device |
| CN106506950A (en) * | 2016-10-27 | 2017-03-15 | 成都西纬科技有限公司 | A kind of image processing method and device |
| CN107580163A (en) * | 2017-08-12 | 2018-01-12 | 四川精视科技有限公司 | A kind of twin-lens black light camera |
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