CN104349068A

CN104349068A - Shooting method and electronic equipment

Info

Publication number: CN104349068A
Application number: CN201310344536.0A
Authority: CN
Inventors: 张强; 周光华; 卢海东; 杨杰
Original assignee: Lenovo Beijing Ltd
Current assignee: Lenovo Beijing Ltd
Priority date: 2013-08-08
Filing date: 2013-08-08
Publication date: 2015-02-11
Anticipated expiration: 2033-08-08
Also published as: CN104349068B

Abstract

The invention discloses a shooting method, which is applied to electronic equipment. The electronic equipment comprises an image acquisition device and a light supplement device. The method comprises the following steps: before the image acquisition device shoots a first image of a first region, judging whether light supplement needs to be performed on the first region or not, wherein the first region is a current preview acquisition region of the image acquisition device; when light supplement needs to be performed on the first region, determining N light supplement amounts which correspond to N sub-regions in the first region, wherein N is an integer of greater than or equal to 2; performing light supplement on the N sub-regions according to the N light supplement amounts by using the light supplement device, wherein at least two light supplement amounts in the N light supplement amounts are different; while performing light supplement on the N sub-regions according to the N light supplement amounts by using the light supplement device, shooting the first region through the image acquisition device to obtain the first image.

Description

A kind of image pickup method and electronic equipment

Technical field

The present invention relates to electronic technology field, particularly relate to a kind of image pickup method and electronic equipment.

Background technology

Along with the development of science and technology, electronic technology have also been obtained development at full speed, and the kind of electronic product also gets more and more, and people have also enjoyed the various facilities that development in science and technology brings.Present people can pass through various types of electronic equipment, enjoy the comfortable life along with development in science and technology brings.Such as, the electronic equipments such as digital camera have become an important part in people's life, and user can use the electronic equipments such as digital camera to take pictures or video, thus keeps the fine moment in life here.

If Light To Dark Ratio is excessive in the region captured by the electronic equipments such as digital camera, then can affect the net effect of photo, if to the shadow exposure in region, then there will be " high light spilling ", in the photo finally obtained, high light part can lose details, poor effect, if to the highlight exposure in region, then there will be shadow exposure deficiency, lose dark portion details, effect is not good yet.

At present, mainly such as, by some light compensating apparatus, reflector, photoflash lamp etc., reduce the Light To Dark Ratio in captured region, thus solve the excessive problem of above-mentioned Light To Dark Ratio.

But the present inventor is in the process realizing the technical scheme in the embodiment of the present invention, find that above-mentioned technology at least exists following technical problem:

In the prior art, in captured region, pass through reflector, the light compensating apparatus such as photoflash lamp because of its light sent be all scattered light, light filling can only be carried out for a larger region in captured region, the light filling amount of specifically some or multiple subdomain cannot to be adjusted in captured region, if only have some or multiple subdomain wherein to need light filling in captured region, other remaining subdomains do not need light filling, then carry out light filling then can cause do not need the subdomain exposure of light filling excessive when taking pictures, the phenomenon that the subdomain making exposure excessive occurs in photo " high light spilling ", thus the effect of photo captured by impact.Therefore, existing in prior art cannot the technical problem of the light filling amount of single or multiple subdomain in the region captured by the adjustment of actual photographed scene.

Summary of the invention

The embodiment of the present invention provides a kind of image pickup method and electronic equipment, solve exist in prior art cannot the technical problem of the light filling amount of single or multiple subdomain in the region captured by the adjustment of actual photographed scene.

The embodiment of the present invention provides a kind of image pickup method on the one hand, be applied to an electronic equipment, described electronic equipment comprises an image acquiring device and a light compensating apparatus, described method comprises: before the first image by described image acquiring device shooting first area, judge whether to need to carry out light filling to described first area, described first area is the current preview pickup area of described image acquiring device; Determine need light filling is carried out to described first area time, determine N number of light filling amount that in described first area, N number of subdomain is corresponding, N be more than or equal to 2 integer; Described light compensating apparatus carries out light filling according to described N number of light filling amount to described N number of subdomain, wherein, at least there are two light filling amounts not identical in described N number of light filling amount; While described light compensating apparatus carries out light filling according to described N number of light filling amount to described N number of subdomain, by described image acquiring device, described first area is taken, to obtain described first image.

Alternatively, described in judge whether need light filling is carried out to described first area, be specially: judge whether obtain user input the first light filling instruction, wherein, obtain described first light filling instruction time, show that needs carry out light filling to described first area; Or it is one pre-conditioned to judge that whether the first preview image of described first area meets, wherein, described first preview image meet described pre-conditioned time, show that needs carry out light filling to described first area.

Alternatively, the described N number of light filling amount determining that in described first area, N number of subdomain is corresponding, specifically comprises: resolve described first light filling instruction, obtains the first corresponding relation between the subdomain of corresponding described N number of subdomain and light filling amount; Based on described first corresponding relation, determine described N number of light filling amount.

Alternatively, it is one pre-conditioned whether described the first preview image judging described first area meets, specifically comprise: use the first image processing algorithm to process described first preview image, described first preview image is divided into the N number of sub-preview image corresponding with described N number of subdomain; Obtain N number of exposure that described N number of sub-preview image is corresponding; Respectively light-metering is carried out to described N number of subdomain with the some Exposure Metering of described image acquiring device, obtain the N number of default exposure that described N number of sub-preview image is corresponding; Judge whether the exposure of every sub-preview image in described N number of sub-preview image is less than the default exposure corresponding with described every sub-preview image; Wherein, when i-th exposure that at least there is i-th sub-preview image in described N number of sub-preview image is less than i-th default exposure corresponding to described i-th sub-preview image, show that needs carry out light filling to described first area, i is any integer between 1 to N.

Alternatively, the described N number of light filling amount determining that in described first area, N number of subdomain is corresponding, specifically comprise: get i successively from 1 to N, obtain i-th difference between i-th exposure of i-th sub-preview image in described N number of sub-preview image, i-th default exposure corresponding with described i-th sub-preview image, when i is N, obtain N number of difference, described N number of difference is described N number of light filling amount that described N number of subdomain is corresponding.

Alternatively, described light compensating apparatus carries out light filling according to described N number of light filling amount to described N number of subdomain, specifically comprise: according to described N number of light filling amount, described light compensating apparatus controls the intensity projecting the light of described N number of subdomain, wherein, the described light compensating apparatus light filling amount that projects the intensity of the light of each subdomain in described N number of subdomain corresponding with described each subdomain is corresponding.

Alternatively, when described light compensating apparatus is specially liquid crystal projection apparatus, described light compensating apparatus controls the intensity projecting the light of described N number of subdomain, specifically comprises: the liquid crystal panel in described liquid crystal projection apparatus is divided into the N number of liquid crystal sub-panel corresponding with described N number of subdomain; The light transmittance controlling described N number of liquid crystal sub-panel is corresponding with described N number of light filling amount, makes described liquid crystal projection apparatus project the intensity of the light of each subdomain in described N number of subdomain corresponding with the corresponding light filling amount of described each subdomain.

Alternatively, when described light compensating apparatus is specially laser projection device, described light compensating apparatus controls the intensity projecting the light of described N number of subdomain, specifically comprises: the beam splitter unit in described laser projection device is divided into the N number of beam splitter subelement corresponding with described N number of subdomain; The splitting ratio controlling described N number of beam splitter subelement is corresponding with described N number of light filling amount, makes described laser projection device project the intensity of the light of each subdomain in described N number of subdomain corresponding with the corresponding light filling amount of described each subdomain.

The embodiment of the present invention provides a kind of electronic equipment on the other hand, comprising: casing, circuit board, is arranged in described casing, image acquiring device, is arranged on described casing, is connected with described circuit board, for obtaining the first image of first area, light compensating apparatus, is arranged on described casing, for carrying out light filling to described first area, processor, be arranged on described circuit board, for before the first image by described image acquiring device shooting first area, judge whether to need to carry out light filling to described first area, described first area is the current preview pickup area of described image acquiring device, and when determining to need to carry out light filling to described first area, determine N number of light filling amount that in described first area, N number of subdomain is corresponding, N be more than or equal to 2 integer, control described light compensating apparatus, according to described N number of light filling amount, light filling is carried out to described N number of subdomain, wherein, at least there are two light filling amounts not identical in described N number of light filling amount, and while described light compensating apparatus carries out light filling according to described N number of light filling amount to described N number of subdomain, by described image acquiring device, described first area is taken, to obtain described first image.

Alternatively, described processor is specifically for judging whether the first light filling instruction obtaining user's input, wherein, when obtaining described first light filling instruction, show that needs carry out light filling to described first area, or it is one pre-conditioned to judge that whether the first preview image of described first area meets, wherein, described first preview image meet described pre-conditioned time, show that needs carry out light filling to described first area.

Alternatively, described processor is specifically for resolving described first light filling instruction, obtain the first corresponding relation between each subdomain and the light filling amount corresponding with described each subdomain in described N number of subdomain, and based on described first corresponding relation, determine described N number of light filling amount.

Alternatively, described processor processes described first preview image specifically for using the first image processing algorithm, described first preview image is divided into the N number of sub-preview image corresponding with described N number of subdomain, and obtain N number of exposure corresponding to described N number of sub-preview image, and respectively light-metering is carried out to described N number of subdomain with the some Exposure Metering of described image acquiring device, obtain the N number of default exposure that described N number of sub-preview image is corresponding, and judge whether the exposure of every sub-preview image in described N number of sub-preview image is less than the default exposure corresponding with described every sub-preview image, wherein, when i-th exposure that at least there is i-th sub-preview image in described N number of sub-preview image is less than i-th default exposure corresponding to described i-th sub-preview image, show that needs carry out light filling to described first area, i is any integer between 1 to N.

Alternatively, described processor is specifically for getting i successively from 1 to N, obtain i-th difference between i-th exposure of i-th sub-preview image in described N number of sub-preview image, i-th default exposure corresponding with described i-th sub-preview image, when i is N, obtain N number of difference, described N number of difference is described N number of light filling amount that described N number of subdomain is corresponding.

Alternatively, described light compensating apparatus is specifically for according to described N number of light filling amount, control to project the intensity of the light of described N number of subdomain, wherein, the light filling amount that described light compensating apparatus projects the intensity of the light of each subdomain in described N number of subdomain corresponding with described each subdomain is corresponding.

Alternatively, described light compensating apparatus is specially liquid crystal projection apparatus, for the liquid crystal panel in described liquid crystal projection apparatus being divided into the N number of liquid crystal sub-panel corresponding with described N number of subdomain, and the light transmittance controlling described N number of liquid crystal sub-panel is corresponding with described N number of light filling amount, described liquid crystal projection apparatus is made to project the intensity of the light of each subdomain in described N number of subdomain corresponding with the corresponding light filling amount of described each subdomain.

Alternatively, described light compensating apparatus is specially laser projection device, for the beam splitter unit in described laser projection device is divided into the N number of beam splitter subelement corresponding with described N number of subdomain, and the splitting ratio controlling described N number of beam splitter subelement is corresponding with described N number of light filling amount, described laser projection device is made to project the intensity of the light of each subdomain in described N number of subdomain corresponding with the corresponding light filling amount of described each subdomain.

The one or more technical schemes provided in the embodiment of the present invention, at least have following technique effect or advantage:

Owing to have employed light compensating apparatus according to determining that the N number of light filling amount corresponding with N number of subdomain carries out light filling to N number of subdomain, wherein, at least there are two light filling amounts not identical in N number of light filling amount, and by technical scheme that image acquiring device is taken first area while light filling, so light filling can be carried out to needing in first area the subdomain of light filling, and not to not needing the subdomain of light filling to carry out light filling in first area, therefore the subdomain of light filling is not needed can not to occur the phenomenon of " high light spilling " because of light filling in first area in the first image, need the subdomain of light filling can present details clearly because obtaining correct light filling amount in the first image in first area simultaneously, efficiently solve exist in prior art cannot the technical problem of the light filling amount of single or multiple subdomain in the region captured by the adjustment of actual photographed scene, thus achieve the technique effect of the light filling amount of single or multiple subdomain in the region captured by the adjustment of actual photographed scene, then ensure that the quality of the first image taken by electronic equipment, can be that people leave fine memory by this image.

Accompanying drawing explanation

The flow chart of the image pickup method that Fig. 1 provides for the embodiment of the present invention;

The schematic diagram of the first preview image of the digital camera that Fig. 2 provides for the embodiment of the present invention;

The functional block diagram of the electronic equipment that Fig. 3 provides for the embodiment of the present invention.

Embodiment

Technical scheme in the embodiment of the present invention is for solving the problems of the technologies described above, and general thought is as follows:

First, before the first image by image acquiring device shooting first area, judge whether to need to carry out light filling to first area, first area is the current preview pickup area of image acquiring device;

Then, when determining to need to carry out light filling to first area, determine N number of light filling amount that in first area, N number of subdomain is corresponding, N be more than or equal to 2 integer;

Then, light compensating apparatus carries out light filling according to N number of light filling amount to N number of subdomain, wherein, at least there are two light filling amounts not identical in N number of light filling amount;

Finally, while light compensating apparatus carries out light filling according to N number of light filling amount to N number of subdomain, by image acquiring device, first area is taken, to obtain the first image.

Can be found out by above-mentioned part, owing to have employed light compensating apparatus according to determining that the N number of light filling amount corresponding with N number of subdomain carries out light filling to N number of subdomain, wherein, at least there are two light filling amounts not identical in N number of light filling amount, and by technical scheme that image acquiring device is taken first area while light filling, so light filling can be carried out to needing in first area the subdomain of light filling, and not to not needing the subdomain of light filling to carry out light filling in first area, therefore the subdomain of light filling is not needed can not to occur the phenomenon of " high light spilling " because of light filling in first area in the first image, need the subdomain of light filling can present details clearly because obtaining correct light filling amount in the first image in first area simultaneously, efficiently solve exist in prior art cannot the technical problem of the light filling amount of single or multiple subdomain in the region captured by the adjustment of actual photographed scene, thus achieve the technique effect of the light filling amount of single or multiple subdomain in the region captured by the adjustment of actual photographed scene, then ensure that the quality of the first image taken by electronic equipment, can be that people leave fine memory by this image.

In order to better understand technique scheme, below in conjunction with Figure of description and concrete execution mode, technique scheme is described in detail.

The embodiment of the present invention provides a kind of image pickup method, be applied to an electronic equipment, this electronic equipment comprises an image acquiring device and a light compensating apparatus, in actual applications, this electronic equipment can be digital camera, also can be that other are furnished with the electronic equipment of camera function, as smart mobile phone, panel computer etc., image acquiring device can be camera head, and light compensating apparatus can be liquid crystal projection apparatus etc., and this is not restricted.

In ensuing part, will take electronic equipment as digital camera be example, carry out description of illustrating in detail.

Please refer to Fig. 1, Fig. 1 is the flow chart of the image pickup method that the embodiment of the present invention provides, and this image pickup method comprises:

S1: before the first image by image acquiring device shooting first area, judge whether to need to carry out light filling to first area, first area is the current preview pickup area of image acquiring device;

S2: when determining to need to carry out light filling to first area, determines N number of light filling amount that in first area, N number of subdomain is corresponding, N be more than or equal to 2 integer;

, wherein, at least there are two light filling amounts in N number of light filling amount not identical in S3: light compensating apparatus carries out light filling according to N number of light filling amount to N number of subdomain;

S4: while light compensating apparatus carries out light filling according to N number of light filling amount to N number of subdomain, by image acquiring device, first area is taken, to obtain the first image.

In step sl, judging whether to need to carry out light filling to first area, specifically, can be the following two kinds situation: judge whether the first light filling instruction obtaining user's input; Or judge whether to be met by the first preview image of image acquiring device shooting first area one pre-conditioned.In the present embodiment, introduction is judged whether need to carry out light filling to first area, be specially the situation judging whether the first light filling instruction obtaining user's input, in another embodiment, introduction is judged whether need to carry out light filling to first area, be specially and judge whether the first preview image by image acquiring device shooting first area meets a pre-conditioned situation.

Judge whether the first light filling instruction obtaining user's input, in the present embodiment, it can be the first light filling instruction that digital camera judges whether to obtain user's input, such as, user is when using this digital camera to take first area, find that certain subdomain or multiple subdomain of first area need light filling, then user can input the first light filling instruction by devices such as button, touch screen, voice to digital camera, digital camera, after the first light filling instruction obtaining user's input, just shows to need to carry out light filling to first area.

In specific implementation process, digital camera can comprise one for showing the display unit of the preview image in captured region, after the display unit of digital camera shows the preview image of first area, this preview image can use some image segmentation algorithms to process by digital camera, it is such as the partitioning algorithm based on threshold value, based on the partitioning algorithm in region, partitioning algorithm based on edge and the partitioning algorithm etc. based on particular theory, this preview image is carried out be divided into N number of sub-preview image, this N number of sub-preview image is corresponding with N number of subdomain of first area, user can according to the actual conditions of this preview image, determine the light filling amount of N number of sub-preview image every required for sub-preview image in this preview image, the aforementioned N number of light filling amount determined is inputted to digital camera by button or the device such as touch screen (if the display unit of digital camera is touch screen) or phonetic entry, also namely have input the first light filling instruction to digital camera.

Digital camera, by the response button operation of user or touch control operation or phonetic entry, obtains the first light filling instruction of user's input, then determining when taking first area, needing to carry out light filling to first area.

In the present embodiment, be a corner for first area, be described in detail, this corner comprises the positive wall of user faced by, the side wall be connected with this positive wall and a floor, please refer to Fig. 2, Fig. 2 is the schematic diagram of the first preview image of the digital camera that the embodiment of the present invention provides, as shown in Figure 2, first preview image is divided in order to 3 sub-preview images by aforementioned said image segmentation algorithm, the sub-preview image that the subdomain at Zheng Qiang place is corresponding is 203, the sub-preview image that the subdomain at side wall place is corresponding is 202, the sub-preview image that the subdomain at place, floor is corresponding is 201, user is according to the actual conditions of this preview image, determine that 201 sub-preview images and 202 sub-preview images need light filling, and 203 sub-preview images do not need light filling also namely its light filling amount be 0, the light filling amount that 201 sub-preview images need is assumed to be 10 units, the light filling amount that 202 sub-preview images need is assumed to be 20 units, the light filling amount that 203 sub-preview images need is assumed to be 0 unit, therefore, user can input light filling amount corresponding to every sub-preview image by the button of digital camera or the device such as touch screen or phonetic entry to digital camera, also namely have input the first light filling instruction to digital camera, the corresponding relation in the first preview image between 3 sub-preview images and 3 light filling amounts is included in this first light filling instruction, be equivalent to the first corresponding relation included in the first light filling instruction in first area between 3 subdomains and 3 light filling amounts.

It should be noted that, light filling amount in the embodiment of the present invention needed for said 201 sub-preview images or the light filling amount needed for 202 sub-preview images refer to when the relevant parameter of digital camera is a particular value, 201 sub-preview images and the light filling amount needed for 202 sub-preview images be just respectively 10 units and 20 unit < such as this unit can for strangling (gram take charge of) second (lxs) >, because some parameter values such as photosensitivity of digital camera, aperture size, shutter speeds etc. all can affect the exposure of last photo, so under different parameter values, the light filling amount that 201 sub-preview images or 202 sub-preview images need is not identical, numerical value in the present embodiment only introduces technical scheme of the present invention for convenience, instead of for limiting the present invention, just repeat no more at this.

In step s 2, when determining to need to carry out light filling to first area, determine N number of light filling amount that in first area, N number of subdomain is corresponding, specifically, can comprise the steps: first, the the first light filling instruction obtained in analyzing step S1, to obtain in first area the first corresponding relation between each subdomain and the light filling amount corresponding with each subdomain in N number of subdomain; Then, according to this first corresponding relation, determine N number of light filling amount that in first area, N number of subdomain is corresponding.

In specific implementation process, known by step S1, user is when input first light filling instruction, it is the first light filling instruction that the light filling amount needed for sub-preview image N number of in preview image every sub-preview image reality inputs to digital camera, wherein, N number of sub-preview image in preview image is corresponding with the N number of subdomain in first area again, therefore, after having resolved this first light filling instruction, just can obtain the light filling amount of N number of sub-preview image every needed for sub-preview image in preview image, thus first corresponding relation that can obtain in N number of subdomain between each subdomain and the light filling amount corresponding with each subdomain, last according to this first corresponding relation, determine N number of light filling amount that in first area, N number of subdomain is corresponding.

Please continue to refer to Fig. 2, in first light filling instruction of user's input, including the light filling amount that in preview image, 201 sub-preview images need is 10 units, the light filling amount that 202 sub-preview images need is the light filling amount that 20 units and 203 sub-preview images need is 0 such information, 201 sub-preview images are corresponding with the subdomain at the place, floor in first area simultaneously, 202 sub-preview images are corresponding with the subdomain at the side wall place in first area, so digital camera is after having resolved the first light filling instruction, the light filling amount that just can obtain the subdomain at place, floor corresponding is 10 units, the light filling amount that the subdomain at side wall place is corresponding is the light filling amount that the subdomain at 20 units and Zheng Qiang place is corresponding is 0 the first such corresponding relation.After this first corresponding relation of acquisition, just can obtain the light filling amount in first area corresponding to each subdomain, in the present embodiment, the light filling amount that digital camera just can obtain the subdomain at place, floor corresponding is 10 units, the light filling amount that the subdomain at side wall place is corresponding is 20 units, and the light filling amount that the subdomain at Zheng Qiang place is corresponding is 0.

In the present embodiment, it is two to need the subdomain of light filling, describe in detail, technical staff belonging to this area, by the introduction of the embodiment of the present invention, according to actual conditions, the more situation of the subdomain of light filling that needs can be processed, to meet the needs of actual conditions, just repeat no more at this.

Certainly, in actual applications, the electronic equipments such as digital camera are when by image segmentation algorithm process the first preview image, may be there is certain problem in the sub-preview image got, can not meet the demand of user, therefore, after the first preview image is divided into N number of sub-preview image, can be adjusted it by user again, adjust the size of each sub-preview image as by the mode such as touch-screen, button, just repeated no more at this.

After determined N number of light filling amount corresponding to N number of subdomain in first area by step S2, the method that the embodiment of the present invention provides enters step S3, that is: light compensating apparatus carries out light filling according to N number of light filling amount to N number of subdomain, wherein, at least there are two light filling amounts not identical in N number of light filling amount, specifically, can comprise: according to N number of light filling amount, light compensating apparatus controls the intensity projecting the light of N number of subdomain, wherein, the light compensating apparatus light filling amount that projects the intensity of the light of each subdomain in N number of subdomain corresponding with each subdomain is corresponding.

In the present embodiment, can be the light filling amount needed according to the subdomain at place, floor in first area be 10 units, the light filling amount that the subdomain at side wall place needs is 20 units, the light filling amount that the subdomain at Zheng Qiang place needs is the information of 0, the light intensity that light compensating apparatus controls to project the subdomain at place, floor is the first intensity, the light intensity projecting the subdomain at side wall place is the second intensity, project the subdomain at Zheng Qiang place light intensity be 0, to make digital camera when taking first area, the light filling amount that the subdomain at place, floor obtains because of light compensating apparatus is 10 units, the light filling amount that the subdomain at side wall place obtains because of light compensating apparatus is 20 units, the light filling amount that the subdomain at Zheng Qiang place obtains because of light compensating apparatus is 0.

In specific implementation process, light compensating apparatus can be liquid crystal projection apparatus, liquid crystal projection apparatus utilizes the arrangement of liquid crystal molecule and the state of liquid crystal molecule itself to send change under electric field action, also the photoelectric effect of liquid crystal is namely utilized, controlled the intensity of the light through liquid crystal cells by the signal of telecommunication exactly, thus provide different light filling amounts to different subdomains.

Specifically, when light compensating apparatus is specially liquid crystal projection apparatus, light compensating apparatus controls the intensity projecting the light of N number of subdomain, can comprise: the liquid crystal panel in liquid crystal projection apparatus is divided into N number of liquid crystal sub-panel corresponding with N number of subdomain; The light transmittance controlling N number of liquid crystal sub-panel is corresponding with N number of light filling amount, makes liquid crystal projection apparatus project the intensity of the light of each subdomain in N number of subdomain corresponding with the light filling amount of the corresponding of each subdomain.

In the present embodiment, can be the liquid crystal panel in liquid crystal projection apparatus is divided into 3 the liquid crystal sub-panels corresponding with 3 subdomains in first area, certainly, 3 the liquid crystal sub-panels that are divided into by liquid crystal panel are herein that virtual for liquid crystal panel is divided into 3 liquid crystal sub-panels; Then 3 liquid crystal sub-panels are driven by the signal of telecommunication, make the light transmittance of 3 liquid crystal sub-panels corresponding with the light filling amount that 3 subdomains in first area need, like this, the light that the light source of liquid crystal projection apparatus produces will need corresponding light filling amount corresponding with each subdomain by the intensity projecting the light of each subdomain after liquid crystal panel.Such as, the light transmittance being controlled the liquid crystal sub-panel corresponding with the subdomain at place, floor by the signal of telecommunication is 10%, the light transmittance controlling the liquid crystal sub-panel corresponding with the subdomain at side wall place is 20%, the light transmittance controlling the liquid crystal sub-panel corresponding with the subdomain at Zheng Qiang place is 0%, like this, when liquid crystal projection apparatus carries out light filling to first area, the technique effect of the light filling amount of single or multiple subdomain in the region captured by the adjustment of actual photographed scene just can be realized.

Certainly, in actual applications, the maximum of light filling amount is relevant to the maximum power value of the bulb of liquid crystal projection apparatus, so, if the maximum light filling amount that the bulb that the light filling amount required for certain subdomain has exceeded liquid crystal projection apparatus can provide, the light filling amount that this user can be pointed out to input has exceeded scope, damages, just repeated no more at this in order to avoid produce liquid crystal projection apparatus.

How above-mentioned introduction light compensating apparatus controls the situation of the intensity of the light projecting each subdomain in first area when being liquid crystal projection apparatus, in ensuing part, will introduce the situation that light compensating apparatus is laser projection device.

In specific implementation process, light compensating apparatus can be laser projection device, laser projection device controls the deflection angle of beam splitter exactly by the signal of telecommunication, thus controls the intensity through the laser of beam splitter unit, thus provides different light filling amounts to different subdomains.Beam splitter is plating on the optical glass of one deck or plural layers, the material of film can be such as ZnSe and Ge etc., this is not restricted, when the deflection angle of beam splitter changes, laser there occurs change relative to the incident angle of this beam splitter, thus laser also can change in the intensity by this beam splitter, namely the technical scheme in the embodiment of the present invention make use of this kind of characteristic of beam splitter.

When light compensating apparatus is specially laser projection device, light compensating apparatus controls the intensity projecting the light of N number of subdomain, specifically comprises: the beam splitter unit in laser projection device is divided into the N number of beam splitter subelement corresponding with N number of subdomain; The deflection angle controlling N number of beam splitter subelement is corresponding with N number of light filling amount, makes laser projection device project the intensity of the light of each subdomain in N number of subdomain corresponding with the light filling amount of the corresponding of each subdomain.

In the present embodiment, can be that the beam splitter unit in laser projection device is divided into 3 the beam splitter subelements corresponding with 3 subdomains in first area, beam splitter unit is made up of multiple beam splitter, if the corresponding beam splitter of each pixel of such as laser projection device, the multiple beam splitters then projecting multiple pixels of place, floor subdomain corresponding are the beam splitter subelement that place, floor subdomain is corresponding, the multiple beam splitters projecting multiple pixels of side wall place subdomain corresponding are the beam splitter subelement that side wall place subdomain is corresponding, the multiple beam splitters projecting multiple pixels of Zheng Qiang place subdomain corresponding are the beam splitter subelement that Zheng Qiang place subdomain is corresponding, by the signal of telecommunication, the deflection angle of 3 beam splitter subelements is corresponding with the light filling amount that 3 subdomains in first area need, laser projection device is made to project the intensity of the light of each subdomain in N number of subdomain corresponding with the light filling amount of the corresponding of each subdomain, thus make at the image acquiring device by digital camera when taking first area, the light filling amount that the subdomain at place, floor obtains is 10 units, the light filling amount that the subdomain at side wall place is corresponding is 20 units, the light filling amount that the subdomain at Zheng Qiang place is corresponding is 0.

Certainly, the light filling amount that laser projection device can provide neither be infinitely-great, when the light filling amount of user's input exceedes the maximum light filling amount that laser projection device can provide, the light filling amount that user can be pointed out to input is excessive, in order to avoid produce damage to laser projection device.

In actual applications, no matter be liquid crystal projection apparatus or laser projection device, the coverage of its light projected is all limited, when exceeding certain distance, liquid crystal projection apparatus and laser projection device all need sizable power can carry out correct light filling to needing the region of light filling, therefore those skilled in the art according to actual conditions, for light compensating apparatus selects suitable power, just can repeat no more at this.

By the introduction of the embodiment of the present invention, the technical staff belonging to this area can according to actual conditions, and the mode selecting other suitable carries out light filling to each subdomain in captured region, to meet the needs of actual conditions, has just repeated no more at this.

While execution step S3, while also namely light filling being carried out to N number of subdomain according to N number of light filling amount by light compensating apparatus, perform step S4 simultaneously, that is: by image acquiring device, first area is taken, to obtain the first image.

In specific implementation process, the speed that light is propagated quickly, so take first area while light filling, the light filling amount that the subdomain that the light filling amount that the subdomain that just can obtain place, floor obtains is 10 units, the light filling amount of the subdomain at side wall place acquisition is 20 units and Zheng Qiang place obtains is first image of 0, so subgraph corresponding with 3 subdomains in first area in the first image all obtains the exposure desired by user, thus ensure that the quality of the first image taken by digital camera.

Certainly, in actual applications, after user inputs the first light filling instruction, the state of throw light can be in during light compensating apparatus throw light always, the preview image that the electronic equipments such as digital camera are provided has been just the preview image after light filling, also just light compensating apparatus throw light can be controlled in the moment of shooting, this is not restricted, although light compensating apparatus always throw light time effect fine, but the electricity of meeting at substantial, and electricity can be saved to a certain extent at the moment control light compensating apparatus throw light of shooting, extend the service time of the electronic equipments such as digital camera, but user cannot know clearly the effect of the image after light filling, therefore, technical staff belonging to this area can according to actual conditions, select suitable mode to meet the needs of actual conditions, just repeat no more at this.

Above-described embodiment describes and judges whether to need to carry out light filling to first area, be specially the situation judging whether the first light filling instruction obtaining user's input, in ensuing embodiment, introduction is judged whether need to carry out light filling to first area, be specially and judge whether the first preview image by image acquiring device shooting first area meets a pre-conditioned situation.

In the present embodiment, judge whether in step S1 to need to carry out light filling to first area, be specially judge whether to be met by the first preview image of image acquiring device shooting first area one pre-conditioned.

Judge whether to be met by the first preview image of image acquiring device shooting first area one pre-conditioned, specifically, can comprise: use the first image processing algorithm to process the first preview image, the first preview image is divided into the N number of sub-preview image corresponding with N number of subdomain; Obtain N number of exposure that N number of sub-preview image is corresponding; Respectively light-metering is carried out to N number of subdomain with the some Exposure Metering of image acquiring device, obtain the N number of default exposure that N number of sub-preview image is corresponding; Judge whether the exposure of every sub-preview image in N number of sub-preview image is less than the default exposure corresponding with every sub-preview image, wherein, when i-th exposure that at least there is i-th sub-preview image in N number of sub-preview image is less than i-th default exposure corresponding to i-th sub-preview image, show to need to carry out light filling to first area, i is any integer between 1 to N.

In specific implementation process, first image processing algorithm can be the image segmentation algorithm introduced in previous embodiment, certainly, by the introduction of the embodiment of the present invention, technical staff belonging to this area can also adopt other image processing algorithms to process the first preview image, has just repeated no more at this.

After the first preview image being divided into the N number of sub-preview image corresponding with N number of subdomain of first area by the first image processing algorithm, obtain N number of exposure that N number of sub-preview image is corresponding, such as, calculate the exposure of every sub-preview image by the intensity of light reflection of the aperture of digital camera and shutter speed, sub-preview image.

Respectively light-metering is carried out to N number of subdomain with the some Exposure Metering of image acquiring device, obtain the N number of default exposure that N number of sub-preview image is corresponding, specifically, the image acquiring device of the electronic equipments such as digital camera generally all has light measurer, when using the N number of subdomain of some Exposure Metering to first area to carry out light-metering, the optimum exposure required for each subdomain in N number of subdomain can be calculated, also namely this subdomain can obtain the image of best results under this optimum exposure, namely camera of the prior art can be accomplished, has just repeated no more at this.In above-mentioned acquisition first preview image, the exposure of every sub-preview image does not have sequencing with the default exposure obtaining every sub-preview image in the first preview image, can adjust sequencing arbitrarily, not limit at this.

In acquisition first preview image after the exposure of every sub-preview image and the default exposure of every sub-preview image, judge whether the exposure of every sub-preview image in N number of sub-preview image is less than default exposure corresponding to every sub-preview image, wherein, when i-th exposure that at least there is i-th sub-preview image in N number of sub-preview image is less than i-th default exposure corresponding to i-th sub-preview image, show to need to carry out light filling to first area, i is any integer between 1 to N.

In the present embodiment, first area is identical with the first area in previous embodiment, first preview image is also identical with the first preview image in front embodiment, please continue to refer to Fig. 2, as shown in Figure 2, first preview image is divided into 201 sub-preview images, 202 sub-preview images and 203 sub-preview images, the subdomain at the place, floor in the 201 corresponding first areas of sub-preview image, the subdomain at the side wall place in the 202 corresponding first areas of sub-preview image, the subdomain at the Zheng Qiang place in the 203 corresponding first areas of sub-preview image.Suppose in the first preview image, the exposure of 201 sub-preview images is 10 units, the exposure of 202 sub-preview images is 30 units, the exposure of 203 sub-preview images is 80 units, and use the some Exposure Metering of the image acquiring device of digital camera to carry out light-metering to 3 of first area subdomains, the default exposure of the subdomain at the place, floor obtained is 20 units, the default exposure of the subdomain at side wall place is 50 units, and the default exposure of the subdomain at Zheng Qiang place is 80 units.

Therefore, can judge that the exposure of 201 sub-preview images is less than the default exposure of its correspondence, the exposure of 202 sub-preview images is also less than the default exposure of its correspondence, the default exposure that the exposure of 203 sub-preview images is corresponding with it is equal, thus determines and need to carry out light filling to first area.

When determining to need to carry out light filling to first area, the method that the present embodiment provides enters step S2, that is: determine N number of light filling amount that in first area, N number of subdomain is corresponding, N be more than or equal to 2 integer.

In the present embodiment, determine N number of light filling amount that in first area, N number of subdomain is corresponding, specifically, can comprise: get i successively from 1 to N, i-th difference between i-th default exposure that i-th exposure obtaining i-th sub-preview image in N number of sub-preview image is corresponding with i-th sub-preview image, when i is N, obtain N number of difference, N number of difference is N number of light filling amount that N number of subdomain is corresponding.

In the present embodiment, because the first preview image divides in order to 3 sub-preview images, also namely N is 3, so get i successively from 1 to 3, i-th difference between i-th default exposure that i-th exposure obtaining i-th sub-preview image in 3 sub-preview images is corresponding with i-th sub-preview image, in the present embodiment, 3 differences can be obtained, the difference that 201 sub-preview images are corresponding is 10 units, the difference that 202 sub-preview images are corresponding is 20 units, the difference that 203 sub-preview images are corresponding is 0, that is, the light filling amount that the subdomain at place, floor is corresponding is 10 units, the light filling amount that the subdomain at side wall place is corresponding is 20 units, the light filling amount that the subdomain at Zheng Qiang place is corresponding is 0.

Certainly, in actual applications, the situation of exposure higher than its default exposure of certain sub-preview image may be there is, and the subdomain that the light compensating apparatus in the present invention is insufficient light in captured region carries out light filling, make the exposure of this sub-preview image close to the default exposure of this sub-preview image, to obtain the image of exposure appropriateness, so cannot to the exposure reducing this subdomain; By the introduction of the present embodiment, those skilled in the art can adjust the relevant parameter of the electronic equipments such as digital camera, the exposure of this sub-preview image is reduced to be less than the default exposure corresponding to it, the technical scheme that the recycling embodiment of the present invention provides carries out light filling to it, certainly, also can not process it, just repeat no more at this.

After determining N number of light filling amount that in first area, N number of subdomain is corresponding, namely the method that the embodiment of the present invention provides can perform step S3 and S4, that is: light compensating apparatus carries out light filling according to N number of light filling amount to N number of subdomain, and while light filling being carried out to N number of subdomain according to N number of light filling amount by light compensating apparatus, by image acquiring device, first area is taken.

Above-mentioned steps S3 and S4 describes in detail in the aforementioned embodiment, step in the present embodiment is similar with it, technical staff belonging to this area can know its specific implementation process according to aforementioned description, and in this case specification is succinct, has just repeated no more.

Certainly, in actual applications, also it is one pre-conditioned to be that the electronic equipments such as digital camera first judge whether to be met by the first preview image of image acquiring device shooting first area, the first preview image whether meet this pre-conditioned time, the first light filling instruction is inputted again by user, make electronic equipment can according to this first light filling instruction to carry out suitable light filling to first area, this mode combines the subjective initiative of people and the accuracy of electronic equipment, in first area, the subdomain of light filling can be needed more exactly to carry out light filling.This is that technical staff belonging to this area is after the inventive concept set forth understanding technical scheme in the invention process; the rational change can made the technical scheme in the embodiment of the present invention and amendment; this also should belong to the scope of claims of the present invention protection, has just repeated no more at this.

Based on same inventive concept, the embodiment of the present invention also provides a kind of electronic equipment, and in actual applications, this electronic equipment can be digital camera, can be also smart mobile phone, panel computer etc., not limit at this.

Please refer to Fig. 3, Fig. 3 is the functional block diagram of the electronic equipment that the embodiment of the present invention provides, and as shown in Figure 3, this electronic equipment comprises:

Casing 301;

Circuit board 302, is arranged in casing 301;

Image acquiring device 303, is arranged on casing 301, is connected with circuit board 302, for obtaining the first image of first area;

Light compensating apparatus 304, is arranged on casing 301, for carrying out light filling to first area;

Processor 305, be arranged on circuit board 302, for before the first image being taken first area by image acquiring device 303, judge whether to need to carry out light filling to first area, first area is the current preview pickup area of image acquiring device 303, and when determining to need to carry out light filling to first area, determine N number of light filling amount that in first area, N number of subdomain is corresponding, N be more than or equal to 2 integer, control light compensating apparatus 304, according to N number of light filling amount, light filling is carried out to N number of subdomain, wherein, at least there are two light filling amounts not identical in N number of light filling amount, and while light compensating apparatus 304 carries out light filling according to N number of light filling amount to N number of subdomain, taken by image acquiring device 303 pairs of first areas, to obtain the first image.

In specific implementation process, processor 305 is specifically for judging whether the first light filling instruction obtaining user's input, wherein, when acquisition first light filling instruction, show to need to carry out light filling to first area, or it is one pre-conditioned to judge that whether the first preview image of first area meets, wherein, when the first preview image meets pre-conditioned, show to need to carry out light filling to first area.

In specific implementation process, processor 305, specifically for resolving the first light filling instruction, obtains the first corresponding relation between each subdomain and the light filling amount corresponding with each subdomain in N number of subdomain, and based on the first corresponding relation, determines N number of light filling amount.

In specific implementation process, processor 305 processes the first preview image specifically for using the first image processing algorithm, first preview image is divided into the N number of sub-preview image corresponding with N number of subdomain, and obtain N number of exposure corresponding to N number of sub-preview image, and respectively light-metering is carried out to N number of subdomain with the some Exposure Metering of image acquiring device 303, obtain the N number of default exposure that N number of sub-preview image is corresponding, and judge whether the exposure of every sub-preview image in N number of sub-preview image is less than the default exposure corresponding with every sub-preview image, wherein, when i-th exposure that at least there is i-th sub-preview image in N number of sub-preview image is less than i-th default exposure corresponding to i-th sub-preview image, show to need to carry out light filling to first area, i is any integer between 1 to N.

In specific implementation process, processor 305 is specifically for getting i successively from 1 to N, i-th difference between i-th default exposure that i-th exposure obtaining i-th sub-preview image in N number of sub-preview image is corresponding with i-th sub-preview image, when i is N, obtain N number of difference, N number of difference is N number of light filling amount that N number of subdomain is corresponding.

In specific implementation process, light compensating apparatus 304 is specifically for according to N number of light filling amount, control to project the intensity of the light of N number of subdomain, wherein, the light filling amount that light compensating apparatus 304 projects the intensity of the light of each subdomain in N number of subdomain corresponding with each subdomain is corresponding.

In specific implementation process, light compensating apparatus 304 is specially liquid crystal projection apparatus, for the liquid crystal panel in liquid crystal projection apparatus being divided into the N number of liquid crystal sub-panel corresponding with N number of subdomain, and the light transmittance controlling N number of liquid crystal sub-panel is corresponding with N number of light filling amount, makes liquid crystal projection apparatus project the intensity of the light of each subdomain in N number of subdomain corresponding with the light filling amount of the corresponding of each subdomain.

In specific implementation process, light compensating apparatus 304 is specially laser projection device, for the beam splitter unit in laser projection device is divided into the N number of beam splitter subelement corresponding with N number of subdomain, and the splitting ratio controlling N number of beam splitter subelement is corresponding with N number of light filling amount, makes laser projection device project the intensity of the light of each subdomain in N number of subdomain corresponding with the light filling amount of the corresponding of each subdomain.

Technical scheme in the invention described above embodiment, at least has following technique effect or advantage:

Those skilled in the art should understand, embodiments of the invention can be provided as method, system or computer program.Therefore, the present invention can adopt the form of complete hardware embodiment, completely software implementation or the embodiment in conjunction with software and hardware aspect.And the present invention can adopt in one or more form wherein including the upper computer program implemented of computer-usable storage medium (including but not limited to magnetic disc store, CD-ROM, optical memory etc.) of computer usable program code.

The present invention describes with reference to according to the flow chart of the method for the embodiment of the present invention, equipment (system) and computer program and/or block diagram.Should understand can by the combination of the flow process in each flow process in computer program instructions realization flow figure and/or block diagram and/or square frame and flow chart and/or block diagram and/or square frame.These computer program instructions can being provided to the processor of all-purpose computer, special-purpose computer, Embedded Processor or other programmable data processing device to produce a machine, making the instruction performed by the processor of computer or other programmable data processing device produce device for realizing the function of specifying in flow chart flow process or multiple flow process and/or block diagram square frame or multiple square frame.

These computer program instructions also can be stored in can in the computer-readable memory that works in a specific way of vectoring computer or other programmable data processing device, the instruction making to be stored in this computer-readable memory produces the manufacture comprising command device, and this command device realizes the function of specifying in flow chart flow process or multiple flow process and/or block diagram square frame or multiple square frame.

These computer program instructions also can be loaded in computer or other programmable data processing device, make on computer or other programmable devices, to perform sequence of operations step to produce computer implemented process, thus the instruction performed on computer or other programmable devices is provided for the step realizing the function of specifying in flow chart flow process or multiple flow process and/or block diagram square frame or multiple square frame.

Obviously, those skilled in the art can carry out various change and modification to the present invention and not depart from the spirit and scope of the present invention.Like this, if these amendments of the present invention and modification belong within the scope of the claims in the present invention and equivalent technologies thereof, then the present invention is also intended to comprise these change and modification.

Claims

1. an image pickup method, is applied to an electronic equipment, it is characterized in that, described electronic equipment comprises an image acquiring device and a light compensating apparatus, and described method comprises:

Before the first image by described image acquiring device shooting first area, judge whether to need to carry out light filling to described first area, described first area is the current preview pickup area of described image acquiring device;

Determine need light filling is carried out to described first area time, determine N number of light filling amount that in described first area, N number of subdomain is corresponding, N be more than or equal to 2 integer;

Described light compensating apparatus carries out light filling according to described N number of light filling amount to described N number of subdomain, wherein, at least there are two light filling amounts not identical in described N number of light filling amount;

While described light compensating apparatus carries out light filling according to described N number of light filling amount to described N number of subdomain, by described image acquiring device, described first area is taken, to obtain described first image.

2. the method for claim 1, is characterized in that, described in judge whether need light filling is carried out to described first area, be specially:

Judging whether the first light filling instruction obtaining user's input, wherein, when obtaining described first light filling instruction, showing that needs carry out light filling to described first area; Or

Judge that whether the first preview image of described first area meets one pre-conditioned, wherein, described first preview image meet described pre-conditioned time, show that needs carry out light filling to described first area.

3. method as claimed in claim 2, it is characterized in that, the described N number of light filling amount determining that in described first area, N number of subdomain is corresponding, specifically comprises:

Resolve described first light filling instruction, obtain the first corresponding relation between the subdomain of corresponding described N number of subdomain and light filling amount;

Based on described first corresponding relation, determine described N number of light filling amount.

4. method as claimed in claim 2, is characterized in that, described to judge whether the first preview image of described first area meets one pre-conditioned, specifically comprises:

Use the first image processing algorithm to process described first preview image, described first preview image is divided into the N number of sub-preview image corresponding with described N number of subdomain;

Obtain N number of exposure that described N number of sub-preview image is corresponding;

Respectively light-metering is carried out to described N number of subdomain with the some Exposure Metering of described image acquiring device, obtain the N number of default exposure that described N number of sub-preview image is corresponding;

Judge whether the exposure of every sub-preview image in described N number of sub-preview image is less than the default exposure corresponding with described every sub-preview image;

Wherein, when i-th exposure that at least there is i-th sub-preview image in described N number of sub-preview image is less than i-th default exposure corresponding to described i-th sub-preview image, show that needs carry out light filling to described first area, i is any integer between 1 to N.

5. method as claimed in claim 4, it is characterized in that, the described N number of light filling amount determining that in described first area, N number of subdomain is corresponding, specifically comprises:

Get i successively from 1 to N, obtain i-th difference between i-th exposure of i-th sub-preview image in described N number of sub-preview image, i-th default exposure corresponding with described i-th sub-preview image, when i is N, obtain N number of difference, described N number of difference is described N number of light filling amount that described N number of subdomain is corresponding.

6. the method as described in claim arbitrary in claim 1-5, is characterized in that, described light compensating apparatus carries out light filling according to described N number of light filling amount to described N number of subdomain, specifically comprises:

According to described N number of light filling amount, described light compensating apparatus controls the intensity projecting the light of described N number of subdomain, and wherein, the light filling amount that described light compensating apparatus projects the intensity of the light of each subdomain in described N number of subdomain corresponding with described each subdomain is corresponding.

7. method as claimed in claim 6, is characterized in that, when described light compensating apparatus is specially liquid crystal projection apparatus, described light compensating apparatus controls the intensity projecting the light of described N number of subdomain, specifically comprises:

Liquid crystal panel in described liquid crystal projection apparatus is divided into the N number of liquid crystal sub-panel corresponding with described N number of subdomain;

The light transmittance controlling described N number of liquid crystal sub-panel is corresponding with described N number of light filling amount, makes described liquid crystal projection apparatus project the intensity of the light of each subdomain in described N number of subdomain corresponding with the corresponding light filling amount of described each subdomain.

8. method as claimed in claim 6, is characterized in that, when described light compensating apparatus is specially laser projection device, described light compensating apparatus controls the intensity projecting the light of described N number of subdomain, specifically comprises:

Beam splitter unit in described laser projection device is divided into the N number of beam splitter subelement corresponding with described N number of subdomain;

The deflection angle controlling described N number of beam splitter subelement is corresponding with described N number of light filling amount, makes described laser projection device project the intensity of the light of each subdomain in described N number of subdomain corresponding with the corresponding light filling amount of described each subdomain.

9. an electronic equipment, is characterized in that, comprising:

Casing;

Circuit board, is arranged in described casing;

Image acquiring device, is arranged on described casing, is connected with described circuit board, for obtaining the first image of first area;

Light compensating apparatus, is arranged on described casing, for carrying out light filling to described first area;

Processor, be arranged on described circuit board, for before the first image by described image acquiring device shooting first area, judge whether to need to carry out light filling to described first area, described first area is the current preview pickup area of described image acquiring device, and when determining to need to carry out light filling to described first area, determine N number of light filling amount that in described first area, N number of subdomain is corresponding, N be more than or equal to 2 integer, control described light compensating apparatus, according to described N number of light filling amount, light filling is carried out to described N number of subdomain, wherein, at least there are two light filling amounts not identical in described N number of light filling amount, and while described light compensating apparatus carries out light filling according to described N number of light filling amount to described N number of subdomain, by described image acquiring device, described first area is taken, to obtain described first image.

10. electronic equipment as claimed in claim 9, it is characterized in that, described processor is specifically for judging whether the first light filling instruction obtaining user's input, wherein, when obtaining described first light filling instruction, show that needs carry out light filling to described first area, or it is one pre-conditioned to judge that whether the first preview image of described first area meets, wherein, described first preview image meet described pre-conditioned time, show that needs carry out light filling to described first area.

11. electronic equipments as claimed in claim 10, it is characterized in that, described processor is specifically for resolving described first light filling instruction, obtain the first corresponding relation between each subdomain and the light filling amount corresponding with described each subdomain in described N number of subdomain, and based on described first corresponding relation, determine described N number of light filling amount.

12. electronic equipments as claimed in claim 10, it is characterized in that, described processor processes described first preview image specifically for using the first image processing algorithm, described first preview image is divided into the N number of sub-preview image corresponding with described N number of subdomain, and obtain N number of exposure corresponding to described N number of sub-preview image, and respectively light-metering is carried out to described N number of subdomain with the some Exposure Metering of described image acquiring device, obtain the N number of default exposure that described N number of sub-preview image is corresponding, and judge whether the exposure of every sub-preview image in described N number of sub-preview image is less than the default exposure corresponding with described every sub-preview image, wherein, when i-th exposure that at least there is i-th sub-preview image in described N number of sub-preview image is less than i-th default exposure corresponding to described i-th sub-preview image, show that needs carry out light filling to described first area, i is any integer between 1 to N.

13. electronic equipments as claimed in claim 12, it is characterized in that, described processor is specifically for getting i successively from 1 to N, obtain i-th difference between i-th exposure of i-th sub-preview image in described N number of sub-preview image, i-th default exposure corresponding with described i-th sub-preview image, when i is N, obtain N number of difference, described N number of difference is described N number of light filling amount that described N number of subdomain is corresponding.

14. electronic equipments as described in claim arbitrary in claim 9-13, it is characterized in that, described light compensating apparatus is specifically for according to described N number of light filling amount, control the intensity projecting the light of described N number of subdomain, wherein, the described light compensating apparatus light filling amount that projects the intensity of the light of each subdomain in described N number of subdomain corresponding with described each subdomain is corresponding.

15. electronic equipments as claimed in claim 14, it is characterized in that, described light compensating apparatus is specially liquid crystal projection apparatus, for the liquid crystal panel in described liquid crystal projection apparatus being divided into the N number of liquid crystal sub-panel corresponding with described N number of subdomain, and the light transmittance controlling described N number of liquid crystal sub-panel is corresponding with described N number of light filling amount, described liquid crystal projection apparatus is made to project the intensity of the light of each subdomain in described N number of subdomain corresponding with the corresponding light filling amount of described each subdomain.

16. electronic equipments as claimed in claim 14, it is characterized in that, described light compensating apparatus is specially laser projection device, for the beam splitter unit in described laser projection device is divided into the N number of beam splitter subelement corresponding with described N number of subdomain, and the splitting ratio controlling described N number of beam splitter subelement is corresponding with described N number of light filling amount, described laser projection device is made to project the intensity of the light of each subdomain in described N number of subdomain corresponding with the corresponding light filling amount of described each subdomain.