CN104333708A - Photographing method, photographing device and terminal - Google Patents
Photographing method, photographing device and terminal Download PDFInfo
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- CN104333708A CN104333708A CN201410715297.XA CN201410715297A CN104333708A CN 104333708 A CN104333708 A CN 104333708A CN 201410715297 A CN201410715297 A CN 201410715297A CN 104333708 A CN104333708 A CN 104333708A
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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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- 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
- H04N23/73—Circuitry for compensating brightness variation in the scene by influencing the exposure time
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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
- H04N23/741—Circuitry for compensating brightness variation in the scene by increasing the dynamic range of the image compared to the dynamic range of the electronic image sensors
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- Signal Processing (AREA)
- Studio Devices (AREA)
- Transforming Light Signals Into Electric Signals (AREA)
Abstract
The invention is suitable for the field of the mobile communications and provides a photographing method, a photographing device and a terminal. The method comprises the following steps: testing light of a scene needing to be shot by use of a first camera; determining the exposure time of the overexposure of the brightest region according to the light testing result; determining the exposure time of the first camera and the exposure time of a second camera according to the determined the exposure time of the overexposure of the brightest region, wherein the exposure time of the first camera is unequal to the exposure time of the second camera; photographing the scene needing to be shot simultaneously by use of the first camera and the second camera according to the determined exposure time of the first camera and the determined exposure time of the second camera; synthesizing a picture obtained by photographing the scene needing to be shot by use of the first camera and a picture obtained by photographing the scene needing to be shot by use of the second camera. The photographing method is capable of outputting a high-dynamic picture.
Description
Technical field
The invention belongs to moving communicating field, particularly relate to a kind of photographic method, camera arrangement and terminal.
Background technology
At present, the integrated function of terminal (smart mobile phone or panel computer) gets more and more, and as except function of surfing the Net, also can realize camera function by arranging camera in terminal.
But by the existing camera being arranged on terminal when taking the large scene of lightness comparison in difference, at the easy overexposure in the region of high brightness, easily owe to expose to the sun in the region of low-light level, because the dynamic range of shooting photo is out too small, therefore cause the photo effect of shooting bad.
Summary of the invention
Embodiments provide a kind of photographic method, camera arrangement and terminal, be intended to solve the problem that existing method is difficult to obtain the large photo of luminance dynamic range.
On the one hand, provide a kind of photographic method, described method comprises the steps:
Light-metering is carried out to needing the scene of shooting by the first camera;
According to the time for exposure of photometry result determination brightest area overexposure;
Determine the time for exposure of the first camera and the time for exposure of second camera according to the time for exposure of the brightest area overexposure determined, the time for exposure of described first camera is not equal to the time for exposure of second camera;
According to the time for exposure of the first camera determined, and the time for exposure of the second camera determined, the scene of needs shooting is taken pictures by the first camera and second camera simultaneously;
Synthesize the first camera to take pictures the photo obtained to the scene that needs are taken to the take pictures photo that obtains and second camera of the scene that needs are taken.
In conjunction with first aspect, in the first possible implementation of first aspect, describedly by the first camera, the step needing the scene of shooting to carry out light-metering specifically to be comprised:
The photo needing the scene of shooting corresponding is obtained by the first camera;
The photo of acquisition is divided into N*N region, N is natural number;
The brightness value of the pixel in the region that statistics divides, to determine the region at highest brightness value and highest brightness value place.
In conjunction with the first possible implementation of first aspect, in the implementation that the second of first aspect is possible, the step of the described time for exposure according to photometry result determination brightest area overexposure specifically comprises:
Obtain the brightness degree of the transducer of the first camera;
According to the highest brightness value determined, the time for exposure obtaining this highest brightness value and the brightness degree obtained, determine the time for exposure of brightest area overexposure.
In conjunction with first aspect, or the first possible implementation of first aspect, or the implementation that the second of first aspect is possible, in the third possible implementation of first aspect, the time for exposure of the described brightest area overexposure according to determining determines that the step of the time for exposure of the first camera and the time for exposure of second camera specifically comprises:
Adopt the time for exposure T of time for exposure T as the first camera of brightest area overexposure, described T is greater than 0;
Adopt T/M as the time for exposure of second camera, described M, for being more than or equal to 2, is less than or equal to the natural number of 10.
In conjunction with the third possible implementation of first aspect, in the 4th kind of possible implementation of first aspect, described synthesis first camera specifically comprises needing the take pictures step of the photo obtained of the scene of shooting needing the take pictures photo that obtains and second camera of the scene of shooting:
Determine the overexposure region that the first camera is taken pictures in the photo that obtains;
Reduce the described overexposure region determined;
Second camera to be taken pictures region corresponding with the overexposure region of reducing in the photo obtained, synthesize with the photo having reduced overexposure region, obtain the photo after synthesizing.
Second aspect, provides a kind of camera arrangement, and described device comprises:
Scene light-metering unit, for carrying out light-metering by the first camera to needing the scene of shooting;
The time for exposure determining unit of overexposure, for the time for exposure according to photometry result determination brightest area overexposure;
The time for exposure determining unit of camera, for determining the time for exposure of the first camera and the time for exposure of second camera according to the time for exposure of the brightest area overexposure determined, the time for exposure of described first camera is not equal to the time for exposure of second camera;
Photographing unit, for the time for exposure according to the first camera determined, and the time for exposure of the second camera determined, the scene of needs shooting is taken pictures by the first camera and second camera simultaneously;
Photo synthesis unit, to take pictures the photo obtained to needing the scene of shooting to needing the take pictures photo that obtains and second camera of the scene of shooting for the synthesis of the first camera.
In conjunction with second aspect, in the first possible implementation of second aspect, described scene light-metering unit comprises:
Photo acquisition module, for obtaining the photo needing the scene of shooting corresponding by the first camera;
Photo divides module, and for the photo of acquisition is divided into N*N region, N is natural number;
Highest brightness value determination module, for adding up the brightness value of the pixel in the region of division, to determine the region at highest brightness value and highest brightness value place.
In conjunction with the first possible implementation of second aspect, in the implementation that the second of second aspect is possible, the time for exposure determining unit of described overexposure comprises:
Brightness degree acquisition module, for obtaining the brightness degree of the transducer of the first camera;
The time for exposure determination module of brightest area overexposure, for according to the highest brightness value determined, the time for exposure obtaining this highest brightness value and the brightness degree obtained, determines the time for exposure of brightest area overexposure.
In conjunction with second aspect, or the first possible implementation of second aspect, or the implementation that the second of second aspect is possible, in the third possible implementation of second aspect, the time for exposure determining unit of described camera comprises:
The time for exposure determination module of the first camera, for adopting the time for exposure T of time for exposure T as the first camera of brightest area overexposure, described T is greater than 0;
The time for exposure determination module of second camera, for adopting T/M as the time for exposure of second camera, described M, for being more than or equal to 2, is less than or equal to the natural number of 10.
In conjunction with the third possible implementation of second aspect, in the 4th kind of possible implementation of second aspect, described photo synthesis unit comprises:
Overexposure area determination module, for determining the overexposure region that the first camera is taken pictures in the photo that obtains;
Module is reduced in overexposure region, for reducing the described overexposure region determined;
Image synthesis unit, region corresponding with the overexposure region of reducing in the photo obtained for being taken pictures by second camera, synthesizes with the photo having reduced overexposure region, obtains the photo after synthesizing.
The third aspect, provides a kind of terminal, and described terminal comprises above-mentioned camera arrangement.
In conjunction with the third aspect, in the first possible implementation of the third aspect, described terminal is smart mobile phone or panel computer.
In embodiments of the present invention, light-metering is carried out to needing the scene of shooting by the first camera, according to the time for exposure of photometry result determination brightest area overexposure, the time for exposure of the first camera and the time for exposure of second camera is determined according to the time for exposure of the brightest area overexposure determined, according to the time for exposure of the first camera determined, and the time for exposure of the second camera determined, simultaneously to needing the scene of shooting to take pictures, synthesize the first camera to take pictures the photo obtained to the scene that needs are taken to the take pictures photo that obtains and second camera of the scene that needs are taken.Owing to carrying out light-metering to the scene of needs shooting, therefore, it is possible to determine the time for exposure of brightest area overexposure in the scene needing to take, thus time for exposure of the first camera and second camera can be determined according to the time for exposure of brightest area overexposure, and Same Scene is taken according to the time for exposure determined simultaneously, and due to the time for exposure of the first camera different with the time for exposure of second camera, therefore, after the photo that the photo of the first camera shooting and second camera are taken is synthesized, higher dynamic photo can be obtained, thus clearly can present the large scene of lightness comparison in difference.
Accompanying drawing explanation
Fig. 1 is the flow chart of a kind of photographic method that first embodiment of the invention provides;
Fig. 2 is the structure chart of a kind of camera arrangement that second embodiment of the invention provides.
Embodiment
In order to make object of the present invention, technical scheme and advantage clearly understand, below in conjunction with drawings and Examples, the present invention is further elaborated.Should be appreciated that specific embodiment described herein only in order to explain the present invention, be not intended to limit the present invention.
In the embodiment of the present invention, light-metering is carried out to needing the scene of shooting by the first camera, according to the time for exposure of photometry result determination brightest area overexposure, the time for exposure of the first camera and the time for exposure of second camera is determined according to the time for exposure of the brightest area overexposure determined, according to the time for exposure of the first camera determined, and the time for exposure of the second camera determined, simultaneously to needing the scene of shooting to take pictures, synthesize the first camera to take pictures the photo obtained to the scene that needs are taken to the take pictures photo that obtains and second camera of the scene that needs are taken.
In order to technical solutions according to the invention are described, be described below by specific embodiment.
embodiment one:
Fig. 1 shows the flow chart of a kind of photographic method that first embodiment of the invention provides, and in embodiments of the present invention, the same face of terminal is provided with two cameras: the first camera and second camera.Take Same Scene by the first camera and second camera simultaneously, obtain the photo that two depth of exposures are different, then two photos different according to two depth of exposures obtained synthesize final photo, details are as follows:
Step S11, carries out light-metering by the first camera to needing the scene of shooting.
Before the first camera light-metering, first can adjust the parameter of the first camera and second camera, ensure that this first camera is identical with the angle of visual field of second camera, so that this first camera and second camera can photograph identical scene, thus be conducive to follow-up photo synthesis.
Wherein, described step S11, is specifically comprised the step needing the scene of shooting to carry out light-metering by the first camera:
A1, the photo needing the scene of shooting corresponding by the first camera acquisition.Particularly, by the first camera photographed scene, and then obtain photo corresponding to this scene.
A2, the photo of acquisition is divided into N*N region, N is natural number.The photo of acquisition is divided into multiple region, is conducive to the coordinate analyzing the bright part of this photo and dark part place.Wherein, N is natural number, and it can value be 4, and as N=4, the photo of acquisition is divided into 16 regions, certainly, N also can be taken as other values, is not construed as limiting herein.
The brightness value of the pixel in the region that A3, statistics divide, to determine the region at highest brightness value and highest brightness value place.Particularly, the brightness value of pixel can directly read from the photo exposed.Wherein, the highest brightness value of this step can be the highest brightness value of pixel, the highest brightness value of the average brightness of the pixel that also can comprise for the region divided.When highest brightness value is the highest brightness value of pixel, the brightness value by compared pixels point is one by one determined; When highest brightness value is the highest brightness value of the average brightness of the pixel that the region divided comprises, first can determines the mean value of the brightness value of the pixel that regional comprises, then be determined by the mean value of the brightness value comparing the regional obtained.
Step S12, according to the time for exposure of photometry result determination brightest area overexposure.
The brightest area of this step is also for needing the brightest area in the scene of shooting.
Wherein, described step S12, the step according to the time for exposure of photometry result determination brightest area overexposure specifically comprises:
B1, obtain the brightness degree of the transducer of the first camera.The transducer of each camera has the brightness degree of its correspondence, and brightness degree is higher, and corresponding highest brightness value is also larger.Such as, suppose that the brightness degree of the transducer of the first camera is 10, then the range of luminance values of the photo of this first camera shooting is 0 ~ 1024.
B2, according to the highest brightness value determined, obtain this highest brightness value time for exposure and obtain brightness degree, determine the time for exposure of brightest area overexposure.Particularly, the highest brightness value determined and obtain the ratio of time for exposure of this highest brightness value, the ratio of the maximum brightness value corresponding with the brightness degree of, acquisition and the time for exposure of brightest area overexposure, corresponding proportional.Such as, suppose that the brightness degree of the transducer of the first camera is 10, then, when brightness degree is 10, corresponding highest brightness value is 1024.Suppose that the highest brightness value determined is 500 and (" 500 " should can refers to the pixel value of pixel, also the mean value of the pixel value in region can be referred to), the time for exposure obtaining " 500 " is 50ms, then 500/50=1024X, when these " 500 " refer to the pixel value of pixel, the time for exposure of the overexposure of the pixel region corresponding to this highest brightness value " 500 " is: X=102.4ms.When these " 500 " refer to the mean value of the pixel value in region, the time for exposure of the overexposure in the region corresponding to this highest brightness value " 500 " is: X=102.4ms.
Step S13, determines the time for exposure of the first camera and the time for exposure of second camera according to the time for exposure of the brightest area overexposure determined, the time for exposure of described first camera is not equal to the time for exposure of second camera.
In this step, in order to obtain high dynamic photo, the difference of the time for exposure of the first camera and the time for exposure of second camera is usually made.
Alternatively, the time for exposure of the first camera can be made to be greater than the time for exposure of second camera, at this moment, according to the time for exposure of the brightest area overexposure determined, described step S13, determines that the step of the time for exposure of the first camera and the time for exposure of second camera specifically comprises:
C1, adopt the time for exposure T of time for exposure T as the first camera of brightest area overexposure, described T is greater than 0.Such as, suppose that the time for exposure of brightest area overexposure is 100ms, then the time for exposure setting the first camera is also 100ms.
C2, employing T/M are as the time for exposure of second camera, and described M, for being more than or equal to 2, is less than or equal to the natural number of 10.
Step S14, according to the time for exposure of the first camera determined, and the time for exposure of the second camera determined, the scene of needs shooting is taken pictures by the first camera and second camera simultaneously.
In this step, when the time for exposure of the first camera is the time for exposure of the brightest area overexposure determined, the highest brightness can be taken in dark region, but brightest area is taken overexposure, or close to the brightness (namely clap into turn white, unsharp brightness) of overexposure.When the time for exposure of second camera is less than time for exposure (become multiple decline) of the first camera, brightest area can be clapped to obtain clear bright and not overexposure by this second camera.
Step S15, synthesizes the first camera and to take pictures the photo obtained to the scene that needs are taken to the take pictures photo that obtains and second camera of the scene that needs are taken.
In this step, the brightest area that the non-brightest area of being taken by the first camera and second camera are taken synthesizes a new photo.
Alternatively, described step S15, synthesizes the first camera and specifically comprises the take pictures step of the photo obtained of the scene that needs are taken the take pictures photo that obtains and second camera of the scene that needs are taken:
D1, determine the overexposure region that the first camera is taken pictures in the photo that obtains.During the highest brightness value be greater than at the brightness value of pixel or set close to pixel (as when brightness degree is 10, the highest brightness value of pixel setting is 1024), show this pixel overexposure.In this step, first obtain the brightness value of the pixel obtained of taking pictures, then the highest brightness value that the brightness value of this pixel and this pixel set is compared, if both differences are in a threshold range, then judge this pixel overexposure, namely judge the region overexposure at this pixel place.Wherein, the region at pixel place refers to the some regions in the region that steps A 2 divides.
D2, reduce the described overexposure region determined.Particularly, reduce according to the border in the region of steps A 2 division the overexposure region determined.
Region corresponding with the overexposure region of reducing in D3, the photo that obtains of being taken pictures by second camera, synthesizes with the photo having reduced overexposure region, obtains the photo after synthesizing.Particularly, determine that second camera is taken pictures in the photo that obtains, to take pictures region corresponding to the region that to need in the photo that obtains to reduce with the first camera, then the photo having reduced overexposure region obtained of being taken pictures in the region determined and the first camera synthesizes, obtain final photo, and export.Such as, suppose that the photo of the first camera shooting is divided into Y1 ~ Y16 region, the photo of second camera shooting is divided into Z1 ~ Z16 region, and Y1, Y2 two regions in the photo of the first camera shooting are overexposure region, Y3 ~ Y16 in the photo that Z1, Z2 (corresponding with Y1, Y2 respectively) in the photo then taken by second camera and the first camera are taken carries out picture synthesis, obtains final photo.
In the first embodiment of the invention, light-metering is carried out to needing the scene of shooting by the first camera, according to the time for exposure of photometry result determination brightest area overexposure, the time for exposure of the first camera and the time for exposure of second camera is determined according to the time for exposure of the brightest area overexposure determined, according to the time for exposure of the first camera determined, and the time for exposure of the second camera determined, simultaneously to needing the scene of shooting to take pictures, synthesize the first camera to take pictures the photo obtained to the scene that needs are taken to the take pictures photo that obtains and second camera of the scene that needs are taken.Owing to carrying out light-metering to the scene of needs shooting, therefore, it is possible to determine the time for exposure of brightest area overexposure in the scene needing to take, thus time for exposure of the first camera and second camera can be determined according to the time for exposure of brightest area overexposure, and Same Scene is taken according to the time for exposure determined simultaneously, and due to the time for exposure of the first camera different with the time for exposure of second camera, therefore, after the photo that the photo of the first camera shooting and second camera are taken is synthesized, higher dynamic photo can be obtained, thus clearly can present the large scene of lightness comparison in difference.
Should be understood that in embodiments of the present invention, the size of the sequence number of above-mentioned each process does not also mean that the priority of execution sequence, and the execution sequence of each process should be determined with its function and internal logic, and should not form any restriction to the implementation process of the embodiment of the present invention.
embodiment two:
Fig. 2 shows the structure chart of a kind of camera arrangement that second embodiment of the invention provides, this camera arrangement can be applied in terminal, this terminal can comprise carries out through wireless access network RAN and one or more core net the subscriber equipment that communicates, this subscriber equipment can be mobile phone (or being called " honeycomb " phone), have the computer etc. of mobile device, such as, subscriber equipment can also be portable, pocket, hand-hold type, built-in computer or vehicle-mounted mobile device, they and wireless access network switched voice and/or data.Again such as, this terminal can comprise smart mobile phone, panel computer, personal digital assistant PDA, point-of-sale terminal POS or vehicle-mounted computer etc.
This camera arrangement comprises: the time for exposure determining unit 22 of scene light-metering unit 21, overexposure, the time for exposure determining unit 23 of camera, photographing unit 24, photo synthesis unit 25.Wherein:
Scene light-metering unit 21, for carrying out light-metering by the first camera to needing the scene of shooting.
Wherein, described scene light-metering unit 21 comprises:
Photo acquisition module, for obtaining the photo needing the scene of shooting corresponding by the first camera.Particularly, by the first camera photographed scene, and then obtain photo corresponding to this scene.
Photo divides module, and for the photo of acquisition is divided into N*N region, N is natural number.Wherein, N is natural number, and it can value be 4, and as N=4, the photo of acquisition is divided into 16 regions, certainly, N also can be taken as other values, is not construed as limiting herein.
Highest brightness value determination module, for adding up the brightness value of the pixel in the region of division, to determine the region at highest brightness value and highest brightness value place.Wherein, highest brightness value can be the highest brightness value of pixel, the highest brightness value of the average brightness of the pixel that also can comprise for the region divided.When highest brightness value is the highest brightness value of pixel, the brightness value by compared pixels point is one by one determined; When highest brightness value is the highest brightness value of the average brightness of the pixel that the region divided comprises, first can determines the mean value of the brightness value of the pixel that regional comprises, then be determined by the mean value of the brightness value comparing the regional obtained.
The time for exposure determining unit 22 of overexposure, for the time for exposure according to photometry result determination brightest area overexposure.
Wherein, brightest area is need the brightest area in the scene of shooting.
Wherein, the time for exposure determining unit 22 of described overexposure comprises:
Brightness degree acquisition module, for obtaining the brightness degree of the transducer of the first camera.The transducer of each camera has the brightness degree of its correspondence, and brightness degree is higher, and corresponding highest brightness value is also larger.
The time for exposure determination module of brightest area overexposure, for according to the highest brightness value determined, the time for exposure obtaining this highest brightness value and the brightness degree obtained, determines the time for exposure of brightest area overexposure.Particularly, the highest brightness value determined and obtain the ratio of time for exposure of this highest brightness value, the ratio of the maximum brightness value corresponding with the brightness degree of, acquisition and the time for exposure of brightest area overexposure, corresponding proportional.
The time for exposure determining unit 23 of camera, for determining the time for exposure of the first camera and the time for exposure of second camera according to the time for exposure of the brightest area overexposure determined, the time for exposure of described first camera is not equal to the time for exposure of second camera.
Wherein, when the time for exposure of the first camera is greater than the time for exposure of second camera, the time for exposure determining unit 23 of described camera comprises:
The time for exposure determination module of the first camera, for adopting the time for exposure T of time for exposure T as the first camera of brightest area overexposure, described T is greater than 0.
The time for exposure determination module of second camera, for adopting T/M as the time for exposure of second camera, described M, for being more than or equal to 2, is less than or equal to the natural number of 10.
Photographing unit 24, for the time for exposure according to the first camera determined, and the time for exposure of the second camera determined, the scene of needs shooting is taken pictures by the first camera and second camera simultaneously.
When the time for exposure of the first camera is the time for exposure of the brightest area overexposure determined, the highest brightness can be taken in dark region, but brightest area is taken overexposure, or close to the brightness (namely clap into turn white, unsharp brightness) of overexposure.When the time for exposure of second camera is less than time for exposure (become multiple decline) of the first camera, brightest area can be clapped to obtain clear bright and not overexposure by this second camera.
Photo synthesis unit 25, to take pictures the photo obtained to needing the scene of shooting to needing the take pictures photo that obtains and second camera of the scene of shooting for the synthesis of the first camera.
Wherein, described photo synthesis unit 25 comprises:
Overexposure area determination module, for determining the overexposure region that the first camera is taken pictures in the photo that obtains.Particularly, first obtain the brightness value of the pixel obtained of taking pictures, then the highest brightness value that the brightness value of this pixel and this pixel set is compared, if both differences are in a threshold range, then judge this pixel overexposure, namely judge the region overexposure at this pixel place.Wherein, the region at pixel place refers to the some regions in the region that steps A 2 divides.
Module is reduced in overexposure region, for reducing the described overexposure region determined.
Image synthesis unit, region corresponding with the overexposure region of reducing in the photo obtained for being taken pictures by second camera, synthesizes with the photo having reduced overexposure region, obtains the photo after synthesizing.Particularly, determine that second camera is taken pictures in the photo that obtains, to take pictures region corresponding to the region that to need in the photo that obtains to reduce with the first camera, then the photo having reduced overexposure region obtained of being taken pictures in the region determined and the first camera synthesizes, obtain final photo, and export.
In second embodiment of the invention, owing to carrying out light-metering to the scene of needs shooting, therefore, it is possible to determine the time for exposure of brightest area overexposure in the scene needing to take, thus time for exposure of the first camera and second camera can be determined according to the time for exposure of brightest area overexposure, and Same Scene is taken according to the time for exposure determined simultaneously, and due to the time for exposure of the first camera different with the time for exposure of second camera, therefore, after the photo that the photo of the first camera shooting and second camera are taken is synthesized, higher dynamic photo can be obtained, thus clearly can present the large scene of lightness comparison in difference.
Those of ordinary skill in the art can recognize, in conjunction with unit and the algorithm steps of each example of embodiment disclosed herein description, can realize with the combination of electronic hardware or computer software and electronic hardware.These functions perform with hardware or software mode actually, depend on application-specific and the design constraint of technical scheme.Professional and technical personnel can use distinct methods to realize described function to each specifically should being used for, but this realization should not thought and exceeds scope of the present invention.
Those skilled in the art can be well understood to, and for convenience and simplicity of description, the specific works process of the system of foregoing description, device and unit, with reference to the corresponding process in preceding method embodiment, can not repeat them here.
In several embodiments that the application provides, should be understood that disclosed system, apparatus and method can realize by another way.Such as, device embodiment described above is only schematic, such as, the division of described unit, be only a kind of logic function to divide, actual can have other dividing mode when realizing, such as multiple unit or assembly can in conjunction with or another system can be integrated into, or some features can be ignored, or do not perform.Another point, shown or discussed coupling each other or direct-coupling or communication connection can be by some interfaces, and the indirect coupling of device or unit or communication connection can be electrical, machinery or other form.
The described unit illustrated as separating component or can may not be and physically separates, and the parts as unit display can be or may not be physical location, namely can be positioned at a place, or also can be distributed in multiple network element.Some or all of unit wherein can be selected according to the actual needs to realize the object of the present embodiment scheme.
In addition, each functional unit in each embodiment of the present invention can be integrated in a processing unit, also can be that the independent physics of unit exists, also can two or more unit in a unit integrated.
If described function using the form of SFU software functional unit realize and as independently production marketing or use time, can be stored in a computer read/write memory medium.Based on such understanding, the part of the part that technical scheme of the present invention contributes to prior art in essence in other words or this technical scheme can embody with the form of software product, this computer software product is stored in a storage medium, comprising some instructions in order to make a computer equipment (can be personal computer, server, or the network equipment etc.) perform all or part of step of method described in each embodiment of the present invention.And aforesaid storage medium comprises: USB flash disk, portable hard drive, read-only memory (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), magnetic disc or CD etc. various can be program code stored medium.
The above; be only the specific embodiment of the present invention, but protection scope of the present invention is not limited thereto, is anyly familiar with those skilled in the art in the technical scope that the present invention discloses; change can be expected easily or replace, all should be encompassed within protection scope of the present invention.Therefore, protection scope of the present invention should described be as the criterion with the protection range of claim.
Claims (12)
1. a photographic method, is characterized in that, described method comprises:
Light-metering is carried out to needing the scene of shooting by the first camera;
According to the time for exposure of photometry result determination brightest area overexposure;
Determine the time for exposure of the first camera and the time for exposure of second camera according to the time for exposure of the brightest area overexposure determined, the time for exposure of described first camera is not equal to the time for exposure of second camera;
According to the time for exposure of the first camera determined, and the time for exposure of the second camera determined, the scene of needs shooting is taken pictures by the first camera and second camera simultaneously;
Synthesize the first camera to take pictures the photo obtained to the scene that needs are taken to the take pictures photo that obtains and second camera of the scene that needs are taken.
2. method according to claim 1, is characterized in that, described by the first camera to need shooting scene carry out light-metering, specifically comprise:
The photo needing the scene of shooting corresponding is obtained by the first camera;
The photo of acquisition is divided into N*N region, N is natural number;
The brightness value of the pixel in the region that statistics divides, to determine the region at highest brightness value and highest brightness value place.
3. method according to claim 2, is characterized in that, the described time for exposure according to photometry result determination brightest area overexposure, specifically comprises:
Obtain the brightness degree of the transducer of the first camera;
According to the highest brightness value determined, the time for exposure obtaining this highest brightness value and the brightness degree obtained, determine the time for exposure of brightest area overexposure.
4. the method according to any one of claims 1 to 3, is characterized in that, the time for exposure of the described brightest area overexposure according to determining determines the time for exposure of the first camera and the time for exposure of second camera, specifically comprises:
Adopt the time for exposure T of time for exposure T as the first camera of brightest area overexposure, described T is greater than 0;
Adopt T/M as the time for exposure of second camera, described M, for being more than or equal to 2, is less than or equal to the natural number of 10.
5. method according to claim 4, is characterized in that, described synthesis first camera to be taken pictures the photo obtained to needing the scene of shooting to needing the take pictures photo that obtains and second camera of the scene of shooting, specifically comprises:
Determine the overexposure region that the first camera is taken pictures in the photo that obtains;
Reduce the described overexposure region determined;
Second camera to be taken pictures region corresponding with the overexposure region of reducing in the photo obtained, synthesize with the photo having reduced overexposure region, obtain the photo after synthesizing.
6. a camera arrangement, is characterized in that, described device comprises:
Scene light-metering unit, for carrying out light-metering by the first camera to needing the scene of shooting;
The time for exposure determining unit of overexposure, for the time for exposure according to photometry result determination brightest area overexposure;
The time for exposure determining unit of camera, for determining the time for exposure of the first camera and the time for exposure of second camera according to the time for exposure of the brightest area overexposure determined, the time for exposure of described first camera is not equal to the time for exposure of second camera;
Photographing unit, for the time for exposure according to the first camera determined, and the time for exposure of the second camera determined, the scene of needs shooting is taken pictures by the first camera and second camera simultaneously;
Photo synthesis unit, to take pictures the photo obtained to needing the scene of shooting to needing the take pictures photo that obtains and second camera of the scene of shooting for the synthesis of the first camera.
7. device according to claim 6, is characterized in that, described scene light-metering unit comprises:
Photo acquisition module, for obtaining the photo needing the scene of shooting corresponding by the first camera;
Photo divides module, and for the photo of acquisition is divided into N*N region, N is natural number;
Highest brightness value determination module, for adding up the brightness value of the pixel in the region of division, to determine the region at highest brightness value and highest brightness value place.
8. device according to claim 7, is characterized in that, the time for exposure determining unit of described overexposure comprises:
Brightness degree acquisition module, for obtaining the brightness degree of the transducer of the first camera;
The time for exposure determination module of brightest area overexposure, for according to the highest brightness value determined, the time for exposure obtaining this highest brightness value and the brightness degree obtained, determines the time for exposure of brightest area overexposure.
9. the device according to any one of claim 6 to 8, is characterized in that, the time for exposure determining unit of described camera comprises:
The time for exposure determination module of the first camera, for adopting the time for exposure T of time for exposure T as the first camera of brightest area overexposure, described T is greater than 0;
The time for exposure determination module of second camera, for adopting T/M as the time for exposure of second camera, described M, for being more than or equal to 2, is less than or equal to the natural number of 10.
10. device according to claim 9, is characterized in that, described photo synthesis unit comprises:
Overexposure area determination module, for determining the overexposure region that the first camera is taken pictures in the photo that obtains;
Module is reduced in overexposure region, for reducing the described overexposure region determined;
Image synthesis unit, region corresponding with the overexposure region of reducing in the photo obtained for being taken pictures by second camera, synthesizes with the photo having reduced overexposure region, obtains the photo after synthesizing.
11. 1 kinds of terminals, is characterized in that, described terminal comprises the camera arrangement described in any one of claim 6 to 10.
12. terminals according to claim 11, is characterized in that, described terminal is smart mobile phone or panel computer.
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| CN107454343A (en) | 2017-12-08 |
| CN107454343B (en) | 2019-08-02 |
| CN104333708B (en) | 2017-10-20 |
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