CN105208294A - Method and device for taking picture - Google Patents

Method and device for taking picture Download PDF

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Publication number
CN105208294A
CN105208294A CN201410279489.0A CN201410279489A CN105208294A CN 105208294 A CN105208294 A CN 105208294A CN 201410279489 A CN201410279489 A CN 201410279489A CN 105208294 A CN105208294 A CN 105208294A
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China
Prior art keywords
region
exposure
normal
picture
exposure value
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CN201410279489.0A
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Chinese (zh)
Inventor
李黎国
李振华
张文娜
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ZTE Corp
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ZTE Corp
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Priority to CN201410279489.0A priority Critical patent/CN105208294A/en
Publication of CN105208294A publication Critical patent/CN105208294A/en
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    • GPHYSICS
    • G03PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03BAPPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B15/00Special procedures for taking photographs; Apparatus therefor

Abstract

The invention discloses a method and a device for taking a picture. The method comprises the steps of converging the exposure values of a normally-exposed area, an overexposed area and an underexposed area determined in pre-flashing into normal ones to obtain three pictures of different exposure values when a flash lamp flashes formally, and synthesizing the areas of which the exposure values converge normally in the three pictures of different exposure values into one picture. According to the invention, the overexposed area and the underexposed area in pre-flashing are processed into normally-exposed areas, the areas after processing are reintegrated, and finally, a picture with uniform brightness is obtained. Therefore, the shooting effect of the flash lamp is improved greatly.

Description

A kind of method of taking pictures and device
Technical field
The present invention relates to communication technical field, particularly relate to a kind of method of taking pictures and device.
Background technology
Along with the development of various terminal camera sensor devices, the effect of taking pictures under half-light more and more can embody the technical advantage of sensor devices.And photoflash lamp is as the important supplementary lighting module of taking pictures under the low light level, its status is also important all the more.
When current terminal uses photoflash lamp to take pictures, be generally divided into preflashing and main sudden strain of a muscle two parts.The exposure value AE of the light-metering target (focal object that be taken) of preflashing stage calculating under the LED luminance of preflashing.During main sudden strain of a muscle, do AE value when difference directly draws main sudden strain of a muscle according to the direct luminance difference of preflashing.Wherein preflashing and main sudden strain of a muscle LED electrical flow valuve are fixed, and that is brightness value is fixed.Owing to adding preflashing flow process, can ensure that light-metering target converges to normally at preflashing stage AE, namely ensure that the exposure value in light-metering target is just right, like this, because the difference of preflashing and main glittering angle value is determined, when also just can ensure main sudden strain of a muscle, light-metering target AE is just right, thus can take the second best in quality photo.
But, there is larger difference to close shot and the reflective of distant view in the light filling of photoflash lamp, is difficult to make the depth of exposure of close shot and distant view all just right when taking pictures: if close shot brightness is normal, so distant view there will be black situation, if and distant view brightness is normal, close shot just there will be overexposure situation.
Summary of the invention
In view of above-mentioned analysis, the present invention aims to provide a kind of method of taking pictures and device, in order to solve because flash lighting differs greatly to close shot and the reflective of distant view in prior art, and the problem that the picture luminance that photoflash lamp is taken is uneven.
For solving the problem, the present invention is mainly achieved through the following technical solutions: one aspect of the present invention provides a kind of method of taking pictures, and the method comprises:
When the main sudden strain of a muscle of photoflash lamp, the exposure value of the region of normal exposure making to determine during preflashing, overexposure region and region of underexposure is restrained normally, to obtain the picture of three different exposure values respectively;
It is a pictures that exposure value in the picture of these three different exposure values is restrained normal region synthesis.
Preferably, the exposure value of the region of normal exposure making to determine during preflashing described, overexposure region and region of underexposure restrain respectively normal before, described method also comprises:
The exposure value of each the default unit under record preflashing in effective exposure area;
Determine described region of normal exposure, described overexposure region and described region of underexposure according to the exposure value of each default unit, wherein, described default unit is any one region in the N*N block region that divides in advance of the effective sensitization area of sensor devices.
Preferably, the exposure value of the region of normal exposure determined when making preflashing, overexposure region and region of underexposure restrain respectively normal before, described method also comprises:
The difference of exposure value when presetting exposure value and this corresponding default unit preflashing of unit when calculating preview respectively described in each square, and square to sue for peace to the difference of the exposure value of all described default unit, obtains accumulated value;
When described accumulated value is greater than default threshold value, makes described region of normal exposure, the exposure value of described overexposure region and described region of underexposure restrains normally, to obtain the picture of three different exposure values respectively;
Wherein, described default unit is any one region in the N*N block region that divides in advance of the effective sensitization area of sensor devices.
Preferably, described in make to determine during preflashing region of normal exposure, overexposure region and region of underexposure exposure value restrain respectively normally, specifically comprise with the step of the picture obtaining three different exposure values:
Do exposure value convergence based on described region of normal exposure, make the exposure value convergence of described region of normal exposure normal, obtain normal exposure picture;
Do exposure value convergence based on described overexposure region, make the exposure value convergence in described overexposure region normal, obtain overexposure picture;
Do exposure value convergence based on described region of underexposure, make the exposure value convergence of described region of underexposure normal, obtain under-exposed picture.
It is preferably, described that exposure value in the picture of these three different exposure values to be restrained normal region synthesis be that the step of a pictures specifically comprises:
Respectively the weight of each corresponding pixel is set according to the exposure value of each default unit in described normal exposure picture, described overexposure picture and described under-exposed picture, and with this weight, corresponding for pixel described in each YUV information is done weighted average respectively, integrate and be treated to a pictures.
The present invention additionally provides a kind of device of taking pictures on the other hand, and this device comprises:
Convergence module, for when the main sudden strain of a muscle of photoflash lamp, the exposure value of the region of normal exposure making to determine during preflashing, overexposure region and region of underexposure is restrained normally, to obtain the picture of three different exposure values respectively;
Processing module, restraining normal region synthesis for exposure value in the picture of three different exposure values that described convergence module obtained is a pictures.
Preferably, device of the present invention also comprises: logging modle and arrange module;
Described logging modle, for recording the exposure value of each the default unit under preflashing in effective exposure area;
Described module is set, exposure value for each the default unit according to described logging modle record determines described region of normal exposure, described overexposure region and described region of underexposure, wherein, described default unit is any one region in the N*N block region that divides in advance of the effective sensitization area of sensor devices.
Preferably, device of the present invention, also comprises: computing module and judge module;
Described computing module, preset described in each during for calculating preview respectively the exposure value of unit and the difference of exposure value during this corresponding default unit preflashing square, and square to sue for peace to the difference of the exposure value of all described default unit, obtains accumulated value;
Described judge module, for when judging that described accumulated value is greater than default threshold value, triggers described convergence module;
Wherein, described default unit is any one region in the N*N block region that divides in advance of the effective sensitization area of sensor devices.
Preferably, described convergence module specifically for, when the main sudden strain of a muscle of photoflash lamp, do exposure value convergence based on described region of normal exposure, make the convergence of the exposure value of described region of normal exposure normal, obtain normal exposure picture; Do exposure value convergence based on described overexposure region, make the exposure value convergence in described overexposure region normal, obtain overexposure picture; Do exposure value convergence based on described region of underexposure, make the exposure value convergence of described region of underexposure normal, obtain under-exposed picture.
Preferably, the described processing module in device of the present invention comprises further: setting unit and computing unit;
Described setting unit, for arranging the weight of each corresponding pixel according to the exposure value of each default unit in described normal exposure picture, described overexposure picture and described under-exposed picture respectively;
Described computing unit, for the weight of described pixel arranged according to described setting unit, does weighted average with this weight by corresponding for pixel described in each YUV information respectively, integrates and is treated to a pictures.
Beneficial effect of the present invention is as follows:
The present invention is by being treated to normal exposure value region by the overexposure region in preflashing and region of underexposure, and the region after process is reintegrated, the picture luminance finally making photoflash lamp take evenly, thus efficiently solve because flash lighting differs greatly to close shot and the reflective of distant view in prior art, and the problem that the picture luminance that photoflash lamp is taken is uneven.
Other features and advantages of the present invention will be set forth in the following description, and the becoming apparent from specification of part, or by implementing the present invention and understanding.Object of the present invention and other advantages realize by structure specifically noted in write specification, claims and accompanying drawing and obtain.
Accompanying drawing explanation
Fig. 1 is the flow chart of the method for taking pictures of the embodiment of the present invention;
Fig. 2 is the flow chart of the method that the another kind of the embodiment of the present invention is taken pictures;
Fig. 3 is the structural representation of a kind of device of taking pictures of the embodiment of the present invention;
Fig. 4 is the structural representation of the device that the another kind of the embodiment of the present invention is taken pictures;
Fig. 5 is the structural representation of another device of taking pictures of the embodiment of the present invention;
Fig. 6 is the structural representation of another device of taking pictures again of the embodiment of the present invention.
Embodiment
Specifically describe the preferred embodiments of the present invention below in conjunction with accompanying drawing, wherein, accompanying drawing forms the application's part, and together with embodiments of the present invention for explaining principle of the present invention.For purpose of clarity and simplification, when it may make theme of the present invention smudgy, illustrating in detail of known function and structure in device described herein will be omitted.
The main purpose of the embodiment of the present invention is to provide a kind of method of taking pictures and device, under main sudden strain of a muscle state, make respectively the region of normal exposure of preflashing, overexposure region and region of underexposure exposure value convergence normal, obtain the picture of three different exposure values, and exposure value in the picture of these three different exposure values to be restrained normal region synthesis be a brightness evenly picture, make picture medium long shot and close shot all clear in this way, thus substantially increase the effect of taking pictures of photoflash lamp.Just by several specific embodiment, technical scheme of the present invention is described in detail below.
Embodiments provide a kind of method of taking pictures, see Fig. 1, comprising:
S101, when the main sudden strain of a muscle of photoflash lamp, the exposure value of the region of normal exposure making to determine during preflashing, overexposure region and region of underexposure is restrained normally, to obtain the picture of three different exposure values respectively
Be specially, when pre flashing of flash lamp, make the exposure value (autoexposure of target area (target by clapping), AE) convergence is normal, thus determine region of normal exposure, overexposure region and region of underexposure, when the main sudden strain of a muscle of photoflash lamp, according to the region of normal exposure under preflashing, overexposure region and region of underexposure, make respectively described region of normal exposure, described overexposure region and described region of underexposure exposure value convergence normal, obtain the picture of three different exposure values;
Region of normal exposure in the embodiment of the present invention is a certain piece of region in the picture that the exposure value of target area is normally obtained, and overexposure region and region of underexposure are that the exposure value of this region of normal exposure relative sets.
S102, exposure value in the picture of these three different exposure values is restrained normal region synthesis is a pictures.
Overexposure region in preflashing and region of underexposure are treated to normal exposure value region by the present invention, and are reintegrated in the region after process, finally obtain a brightness evenly picture, thus substantially increase the effect of taking pictures of photoflash lamp.
Terminal in the embodiment of the present invention can be undertaken taking pictures by photoflash lamp mobile phone, notebook or panel computer etc.
Determine region of normal exposure in the embodiment of the present invention, the step of overexposure region and region of underexposure specifically comprises: in AE convergence under normal circumstances, the exposure value of each the default unit under record preflashing in effective exposure area; Determine described region of normal exposure, described overexposure region and described region of underexposure according to the exposure value of each default unit, wherein, described default unit is any one region in the N*N block region that divides in advance of the effective sensitization area of sensor devices.
Namely, the effective sensitization area of sensor devices is divided into N*N block region by the embodiment of the present invention in advance, default unit is any one region in N*N block region, under preflashing, the exposure value AE of target area is restrained normal, record the exposure value of each default unit, and determine described region of normal exposure, described overexposure region and described region of underexposure according to the exposure value of each default unit under preflashing.
The effective exposure area of the embodiment of the present invention comprises region of normal exposure, overexposure region and region of underexposure.
Method described in the embodiment of the present invention also comprises: the difference of exposure value when (a kind of state that preview is terminal before preflashing) presets the exposure value of unit and this corresponding default unit preflashing described in each when calculating preview respectively square, and square summation to the difference of the exposure value of all described default unit, obtain accumulated value;
When described accumulated value is less than default threshold value, then show that photoflash lamp does not play light filling effect substantially, the picture not carrying out overexposure region and region of underexposure exports;
When described accumulated value is greater than default threshold value, makes described region of normal exposure, the exposure value of described overexposure region and described region of underexposure restrains normally, to obtain the picture of three different exposure values respectively;
Wherein, described default unit is any one region in the N*N block region that divides in advance of the effective sensitization area of sensor devices.
Namely, the difference of the exposure value when exposure value when embodiment of the present invention first tries to achieve the preview of all default unit and preflashing square, square to add up again by the difference of the exposure value of all described default unit, obtain an accumulated value, and this accumulated value and the threshold value preset are compared, judging whether the picture of output three different exposure values further.
The embodiment of the present invention make respectively described region of normal exposure, described overexposure region and described region of underexposure exposure value convergence normal, the step obtaining the picture of three different exposure values specifically comprises:
Do exposure value convergence based on described region of normal exposure, make the exposure value convergence of described region of normal exposure normal, obtain normal exposure picture, namely obtain target area picture clearly.
Do exposure value convergence based on described overexposure region, make the exposure value convergence in described overexposure region normal, obtain overexposure picture, namely obtain overexposure region picture clearly, in this situation, region of normal exposure and region of underexposure may be unintelligible.
Do exposure value convergence based on described region of underexposure, make the exposure value convergence of described region of underexposure normal, obtain under-exposed picture, namely obtain region of underexposure picture clearly, in this situation, region of normal exposure and overexposure region may be unintelligible.
It is that the step of a pictures specifically comprises that exposure value in the picture of these three different exposure values is restrained normal region synthesis by the embodiment of the present invention:
Respectively the weight of each corresponding pixel is set according to the exposure value of each default unit in described normal exposure picture, described overexposure picture and described under-exposed picture, and with this weight, corresponding for pixel described in each YUV information is done weighted average respectively, synthesize a pictures.
Be specially, by the height that normal for exposure value convergence in the picture weight presetting pixel corresponding to unit is arranged, and exposure value in picture is restrained the low of the weight setting of pixel corresponding to abnormal default unit, then respectively weighted average is done to the corresponding YUV information of pixel described in each, synthesize a brightness further evenly picture.
Such as, average computational methods are weighted to the YUV information of i-th pixel as follows:
Y i=(aY iH+bY iM+cY iL)/a+b+c;
U i=(aU iH+bU iM+cU iL)/a+b+c;
V i=(aV iH+bV iM+cV iL)/a+b+c;
Wherein: a=0.1, b=0.8, c=0.1, H: represent overexposure picture; M: representative exposure normal picture; L: represent under-exposed picture;
After weighted average, obtain the YUV information of i-th pixel, and the rest may be inferred, obtain the YUV information of all pixels in picture, and then obtain the picture of final brightness uniformity.
The example that the method for the YUV information of above-mentioned calculating picture one of being only used to better understand the present invention and doing is concrete, those skilled in the art also can be processed above-mentioned three pictures by other algorithm, as long as make the picture after final process more clear.
Fig. 2 is the flow chart of the method that the another kind of the embodiment of the present invention is taken pictures, and carries out detailed explanation and explanation below in conjunction with Fig. 2 to the present invention:
S201, starting hand-set camera, enter camera preview mode, AE restrained normal, and record exposure value;
Be specially, with the target area taken for exposure object, calculate the exposure status that every block presets unit respectively, and preserve;
If S202 camera flash-light pattern is set to Auto pattern, judges that current environment is the need of opening photoflash lamp, needs, opens photoflash lamp, if camera flash-light pattern is set to On pattern, when taking pictures, directly opening photoflash lamp;
If S203 needs to open photoflash lamp, press key of taking pictures, open preflashing function, target area AE is restrained normal, and record exposure value;
Preflashing current value is fixed, and is that exposure object exposes with target area, calculates the exposure value of each default unit respectively, and according to the exposure value determination region of normal exposure of each default unit under preflashing, overexposure region and region of underexposure, preserves;
The main sudden strain of a muscle of S204, photoflash lamp, and export three pictures respectively based on exposure value during preflashing, be respectively: normal exposure picture, overexposure picture and under-exposed picture;
Due to during preflashing when LED electrical flow valuve and main sudden strain of a muscle LED electrical flow valuve fix, its brightness belongs to linear relationship, therefore, according to AE during preflashing, AE value during main sudden strain of a muscle can be calculated, during main sudden strain of a muscle, based on the region of normal exposure under preflashing, overexposure region and region of underexposure, make respectively described region of normal exposure, described overexposure region and described region of underexposure exposure value convergence normal, obtain the picture of three different exposure values;
Before exporting three pictures, also need to carry out following deterministic process, be specially:
The difference of exposure value when presetting exposure value and this corresponding default unit preflashing of unit when calculating preview respectively described in each square, and square to sue for peace to the difference of the exposure value of all described default unit, obtains accumulated value;
When described accumulated value is greater than default threshold value, do exposure value convergence based on described region of normal exposure, make the exposure value convergence of described region of normal exposure normal, obtain normal exposure picture; Do exposure value convergence based on described overexposure region, make the exposure value convergence in described overexposure region normal, obtain overexposure picture; Do exposure value convergence based on described region of underexposure, make the exposure value convergence of described region of underexposure normal, obtain under-exposed picture;
S205, three pictures are synthesized a pictures, and preserve.
Restraining normal region synthesis by exposure value in the picture of these three different exposure values is a pictures, be specially, respectively the weight of each corresponding pixel is set according to the exposure value of each default unit in described normal exposure picture, described overexposure picture and described under-exposed picture, and corresponding for pixel described in each YUV information is done weighted average respectively, synthesize a pictures.
The embodiment of the present invention additionally provides a kind of device of taking pictures, and see Fig. 3, comprising: interconnective convergence module 11 and processing module 12;
Convergence module 11 is for when the main sudden strain of a muscle of photoflash lamp, and the exposure value of the region of normal exposure making to determine during preflashing, overexposure region and region of underexposure is restrained normally, to obtain the picture of three different exposure values respectively;
It is a pictures that processing module 12 restrains normal region synthesis for exposure value in the picture of three different exposure values that described convergence module obtained.
Fig. 4 is the structural representation of the device that the another kind of the embodiment of the present invention is taken pictures, and as shown in Figure 4, the embodiment of the present invention additionally provides a kind of preferred device, and compared with the device of Fig. 3, this device is also provided with logging modle 13 and arranges module 14;
The exposure value of each the default unit under preflashing in effective exposure area is recorded by described logging modle 13; And determine described region of normal exposure, described overexposure region and described region of underexposure by the described module 14 that arranges according to the exposure value of each default unit of described logging modle record, wherein, described default unit is any one region in the N*N block region that divides in advance of the effective sensitization area of sensor devices.
Fig. 5 is the structural representation of another device of taking pictures of the embodiment of the present invention, and as shown in Figure 5, the embodiment of the present invention additionally provides a kind of preferred device, and compared with the device corresponding to Fig. 4, this device is also provided with computing module 15 and judge module 16;
Preset described in each when described computing module 15 calculates preview respectively the exposure value of unit and the difference of exposure value during this corresponding default unit preflashing square, and square to sue for peace to the difference of the exposure value of all described default unit, obtains accumulated value;
Described judge module 16, when judging that described accumulated value is greater than default threshold value, triggers described convergence module 11;
For convergence module 11, present invention also offers a kind of method for optimizing, be specially, convergence module 11 specifically for, when the main sudden strain of a muscle of photoflash lamp, according to the region of normal exposure under preflashing, overexposure region and region of underexposure, do exposure value convergence based on described region of normal exposure, make the exposure value convergence of described region of normal exposure normal, obtain normal exposure picture; Do exposure value convergence based on described overexposure region, make the exposure value convergence in described overexposure region normal, obtain overexposure picture; Do exposure value convergence based on described region of underexposure, make the exposure value convergence of described region of underexposure normal, obtain under-exposed picture.
Fig. 6 is the structural representation of another device of taking pictures again of the embodiment of the present invention, and as shown in Figure 6, the described processing module of the embodiment of the present invention comprises further: setting unit 121 and computing unit 122;
Described setting unit 121 arranges the weight of each corresponding pixel according to the exposure value of each default unit in described normal exposure picture, described overexposure picture and described under-exposed picture respectively;
The weight of the described pixel that described computing unit 122 is arranged according to described setting unit, does weighted average with this weight respectively by corresponding for pixel described in each YUV information, synthesizes a pictures.
Content in the device of the embodiment of the present invention can the related content of reference method part be understood, and does not repeat them here.
Method of taking pictures provided by the invention and device, can bring following beneficial effect:
The present invention is by being treated to normal exposure value region by the overexposure region in preflashing and region of underexposure, and the region after process is reintegrated, finally obtain the picture of a brightness uniformity, make picture medium long shot and close shot all clear in this way, thus substantially increase the effect of taking pictures of photoflash lamp.
The above; be only the present invention's preferably embodiment, 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; the change that can expect easily or replacement, all should be encompassed within protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion with the protection range of claims.

Claims (10)

1. a method of taking pictures, is characterized in that, comprising:
When the main sudden strain of a muscle of photoflash lamp, the exposure value of the region of normal exposure making to determine during preflashing, overexposure region and region of underexposure is restrained normally, to obtain the picture of three different exposure values respectively;
It is a pictures that exposure value in the picture of these three different exposure values is restrained normal region synthesis.
2. method according to claim 1, is characterized in that, the exposure value of the region of normal exposure making to determine during preflashing described, overexposure region and region of underexposure restrain respectively normal before, described method also comprises:
The exposure value of each the default unit under record preflashing in effective exposure area;
Determine described region of normal exposure, described overexposure region and described region of underexposure according to the exposure value of each default unit, wherein, described default unit is any one region in the N*N block region that divides in advance of the effective sensitization area of sensor devices.
3. method according to claim 1, is characterized in that, the exposure value of the region of normal exposure determined when making preflashing, overexposure region and region of underexposure restrain respectively normal before, described method also comprises:
The difference of exposure value when presetting exposure value and this corresponding default unit preflashing of unit when calculating preview respectively described in each square, and square to sue for peace to the difference of the exposure value of all described default unit, obtains accumulated value;
When described accumulated value is greater than default threshold value, makes described region of normal exposure, the exposure value of described overexposure region and described region of underexposure restrains normally, to obtain the picture of three different exposure values respectively;
Wherein, described default unit is any one region in the N*N block region that divides in advance of the effective sensitization area of sensor devices.
4. according to the method in claim 1-3 described in any one, it is characterized in that, described make to determine during preflashing region of normal exposure, overexposure region and region of underexposure exposure value restrain respectively normally, specifically comprise with the step of the picture obtaining three different exposure values:
Do exposure value convergence based on described region of normal exposure, make the exposure value convergence of described region of normal exposure normal, obtain normal exposure picture;
Do exposure value convergence based on described overexposure region, make the exposure value convergence in described overexposure region normal, obtain overexposure picture;
Do exposure value convergence based on described region of underexposure, make the exposure value convergence of described region of underexposure normal, obtain under-exposed picture.
5. method according to claim 4, is characterized in that, described exposure value in the picture of these three different exposure values to be restrained normal region synthesis be that the step of a pictures specifically comprises:
Respectively the weight of each corresponding pixel is set according to the exposure value of each default unit in described normal exposure picture, described overexposure picture and described under-exposed picture, and with this weight, corresponding for pixel described in each YUV information is done weighted average respectively, integrate and be treated to a pictures.
6. a device of taking pictures, is characterized in that, comprising:
Convergence module, for when the main sudden strain of a muscle of photoflash lamp, the exposure value of the region of normal exposure making to determine during preflashing, overexposure region and region of underexposure is restrained normally, to obtain the picture of three different exposure values respectively;
Processing module, restraining normal region synthesis for exposure value in the picture of three different exposure values that described convergence module obtained is a pictures.
7. device according to claim 6, is characterized in that, also comprises: logging modle and arrange module;
Described logging modle, for recording the exposure value of each the default unit under preflashing in effective exposure area;
Described module is set, exposure value for each the default unit according to described logging modle record determines described region of normal exposure, described overexposure region and described region of underexposure, wherein, described default unit is any one region in the N*N block region that divides in advance of the effective sensitization area of sensor devices.
8. device according to claim 6, is characterized in that, also comprises: computing module and judge module;
Described computing module, preset described in each during for calculating preview respectively the exposure value of unit and the difference of exposure value during this corresponding default unit preflashing square, and square to sue for peace to the difference of the exposure value of all described default unit, obtains accumulated value;
Described judge module, for when judging that described accumulated value is greater than default threshold value, triggers described convergence module;
Wherein, described default unit is any one region in the N*N block region that divides in advance of the effective sensitization area of sensor devices.
9., according to the device in claim 6-8 described in any one, it is characterized in that,
Described convergence module specifically for, when the main sudden strain of a muscle of photoflash lamp, do exposure value convergence based on described region of normal exposure, make the convergence of the exposure value of described region of normal exposure normal, obtain normal exposure picture; Do exposure value convergence based on described overexposure region, make the exposure value convergence in described overexposure region normal, obtain overexposure picture; Do exposure value convergence based on described region of underexposure, make the exposure value convergence of described region of underexposure normal, obtain under-exposed picture.
10. device according to claim 9, is characterized in that, described processing module comprises further: setting unit and computing unit;
Described setting unit, for arranging the weight of each corresponding pixel according to the exposure value of each default unit in described normal exposure picture, described overexposure picture and described under-exposed picture respectively;
Described computing unit, for the weight of described pixel arranged according to described setting unit, does weighted average with this weight by corresponding for pixel described in each YUV information respectively, integrates and is treated to a pictures.
CN201410279489.0A 2014-06-20 2014-06-20 Method and device for taking picture Pending CN105208294A (en)

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CN107071262A (en) * 2016-12-28 2017-08-18 深圳天珑无线科技有限公司 Photographic method and camera arrangement
CN107566752A (en) * 2017-10-31 2018-01-09 努比亚技术有限公司 A kind of image pickup method, terminal and computer-readable storage medium
TWI667919B (en) * 2017-10-05 2019-08-01 香港商印芯科技股份有限公司 Electronic deivce and automatic exposure convergence method
CN111064898A (en) * 2019-12-02 2020-04-24 联想(北京)有限公司 Image shooting method and device, equipment and storage medium

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