CN104394329A - Photographing method and device and mobile terminal - Google Patents
Photographing method and device and mobile terminal Download PDFInfo
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- CN104394329A CN104394329A CN201410705159.3A CN201410705159A CN104394329A CN 104394329 A CN104394329 A CN 104394329A CN 201410705159 A CN201410705159 A CN 201410705159A CN 104394329 A CN104394329 A CN 104394329A
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Abstract
The invention discloses a photographing method and device and a mobile terminal. The method includes acquiring a preset commissioning constant that the initial exposure target value under the current scene corresponds to; determining that the product of the preset commissioning constant and the initial exposure target value is the novel exposure target value under the current scene; utilizing the novel exposure target value to photograph the object. By means of the method and the device, the new exposure target value is the value modulated through the preset commissioning constant, the photographing effect is better compared with the original effect, and photographed image is clear in detail, and the problem of poor image effect caused by the fact that the exposure target value cannot be changed according to different brightness environments due to the fact that the photographed image effect cannot reach a balance point due to the fact that the bright-dark difference is too large is solved.
Description
Technical field
The present invention relates to field of mobile communication, particularly relate to a kind of photographic method, device and mobile terminal.
Background technology
Present mobile phone photograph all can adopt touch AE (touch automatic exposure) to expose, principle utilizes user's finger touch screen area to choose reference object, trigger light-metering, sensor inductor is utilized to respond to the brightness of reference object, result according to induction adopts different time for exposure, yield value, aperture-coefficient, thus makes picture reach naked eyes to seem comfortable brightness.Such as, facing to the scene that sky is very bright, the image of shooting will be made can to see the details of sky cloud clearly by reduction time for exposure, reduction yield value, stop down size.In like manner, facing to dark place, the brightness of image also can be improved by changing these three coefficients.Generally speaking, if it is that people glances up a most comfortable parameter that the last brightness of image reaches 128.Certainly the brightness that different scenes is different can present some different effects.
A suitable brightness is reached in order to make the photo of shooting, we can arrange an AE target parameter when debugging effect, namely exposure target value, under the environment of different brightness, the desired value that brightness that three parameters make image final reaches setting can be debugged, no matter being by overall light-metering, center light-metering, some light-metering or touch screen light-metering, is all adopt the same exposure target value.
Prior art, in the larger scene of some bright dark difference, adopts touch screen light-metering, there will be some local overexposures or local excessively dark, thus cause some details not see Chu.The emphasis will taken due to user is had nothing in common with each other, and such as client takes a plant, and the region that touch screen may show plant is taken.
Adopt the mode of touch AE to carry out taking the photo that obtains as shown in Figure 1, the photo not adopting the mode of touch AE to take to obtain as shown in Figure 2.As can be seen from two photos, in prior art, the photo plant brightness adopting touch AE mode to take is higher, can see the details inside plant clearly, but the material objects such as the wall of floor and background then can not see Chu by overexposure.And adopting the light-metering of normal mode central area, then plant is partially dark, but wall and floor then can not overexposures.
Same reason, if facing to brighter region touch AE, then can see fluorescent tube internal structure clearly, but other regions of ceiling are then a slice dark does not see Chu, as shown in Figure 3.If do not adopt the normal photographing of touch AE, it is more clearly that entirety is seen, but fluorescent tube region overexposure can't see details, as shown in Figure 4.
Comprehensive above example, can see the scheme of having can exist some scenes due to bright dark difference excessive, the effect obtaining image that causes taking pictures better does not reach a balance point, cannot change exposure target value, cause image effect not good according to different lightness environment.
Summary of the invention
The invention provides a kind of photographic method, device and mobile terminal, at least to solve because bright dark difference is excessive, the effect obtaining image that causes taking pictures better does not reach a balance point, cannot change exposure target value, cause the problem that image effect is not good according to different lightness environment.
On the one hand, the invention provides a kind of photographic method, comprising: the default debugging constant that the initial exposure desired value under acquisition current scene is corresponding; Determine that the product of described default debugging constant and described initial exposure desired value is the new exposure target value under current scene; Described new exposure target value is used to take pictures to subject.
Further, before the default debugging constant that the initial exposure desired value under described acquisition current scene is corresponding, also comprise: for the initial exposure desired value under each photographed scene in multiple different photographed scene arranges a corresponding default debugging constant respectively.
Further, describedly to comprise for the initial exposure desired value under each photographed scene in multiple different photographed scene arranges a corresponding default debugging constant respectively: the chromatic value selecting predetermined number in standard 24 colour atla; The chromatic value of predetermined number is carried out product with the initial exposure desired value under each photographed scene in described multiple different photographed scene, respectively to obtain the new exposure target value of predetermined number; Take pictures according under each photographed scene respectively in described multiple different photographed scene of the new exposure target value of predetermined number, and select the photo obtained from taking pictures to meet chromatic value corresponding to pre-conditioned photo as the default debugging constant under each photographed scene in described multiple different photographed scene.
Further, the default debugging constant that the initial exposure desired value under described acquisition current scene is corresponding comprises: obtain the initial exposure desired value that current scene is corresponding, and select the default debugging constant corresponding with described current scene in configuration file; The product of described default debugging constant and described initial exposure desired value is set to the new exposure target value under current scene.
Further, use described new exposure target value to take pictures to subject and comprise: detect the position that screen is touched, and obtain the brightness value of subject corresponding to described position; The exposure gain that subject is corresponding is determined according to described brightness value, described new exposure target value; According to described exposure gain, described subject is taken pictures.
On the other hand, the present invention also provides a kind of camera arrangement, comprising: acquisition module, for obtaining default debugging constant corresponding to initial exposure desired value under current scene; Determination module, for determining that the product of described default debugging constant and described initial exposure desired value is the new exposure target value under current scene; Photo module, takes pictures to subject for using described new exposure target value.
Further, described device also comprises: arrange module, for arranging a corresponding default debugging constant respectively for the initial exposure desired value under each photographed scene in multiple different photographed scene.
Further, described acquisition module comprises: acquiring unit, for obtaining initial exposure desired value corresponding to current scene, and selects the default debugging constant corresponding with described current scene in configuration file; Setting unit, for being set to the new exposure target value under current scene by the product of described default debugging constant and described initial exposure desired value.
Further, described photo module comprises: detecting unit, for detecting the position that screen is touched, and obtains the brightness value of subject corresponding to described position; Determining unit, for determining according to described brightness value, described new exposure target value the exposure gain that subject is corresponding; Photographing unit, for taking pictures to described subject according to described exposure gain.
Another aspect, the invention provides a kind of mobile terminal, comprising: the camera arrangement described in above-mentioned any one.
The present invention adjusts initial exposure target value, obtain and preset debugging constant, and preset debugging constant determine a new exposure target value according to this, the exposure target value new according to this is taken pictures, due to new exposure target value be modulated by default debugging constant after value, its shooting effect is better before comparing, the image detail clapped can be made to look more clear, solve because bright dark difference is excessive, the effect obtaining image that causes taking pictures better does not reach a balance point, exposure target value cannot be changed according to different lightness environment, cause the problem that image effect is not good.
Accompanying drawing explanation
By reading hereafter detailed description of the preferred embodiment, various other advantage and benefit will become cheer and bright for those of ordinary skill in the art.Accompanying drawing only for illustrating the object of preferred implementation, and does not think limitation of the present invention.And in whole accompanying drawing, represent identical parts by identical reference symbol.In the accompanying drawings:
Fig. 1 adopts the mode of touch AE to carry out taking the photo obtained in prior art;
Fig. 2 does not adopt the mode of touch AE to take the photo obtained in prior art;
Fig. 3 adopts the mode of touch AE to carry out taking the photo obtained in prior art;
Fig. 4 does not adopt the mode of touch AE to take the photo obtained in prior art;
Fig. 5 is the flow chart of photographic method in the embodiment of the present invention;
Fig. 6 is the structural representation of camera arrangement in the embodiment of the present invention;
Fig. 7 is the preferred structure schematic diagram of camera arrangement in the embodiment of the present invention;
Fig. 8 is the image adopting photographic method shooting plant to obtain in the embodiment of the present invention;
Fig. 9 is the image adopting photographic method bat ceiling and lamp to obtain in the embodiment of the present invention.
Embodiment
Below with reference to accompanying drawings exemplary embodiment of the present disclosure is described in more detail.Although show exemplary embodiment of the present disclosure in accompanying drawing, however should be appreciated that can realize the disclosure in a variety of manners and not should limit by the embodiment set forth here.On the contrary, provide these embodiments to be in order to more thoroughly the disclosure can be understood, and complete for the scope of the present disclosure can be conveyed to those skilled in the art.
In order to solve prior art due to bright dark difference excessive, the effect obtaining image that causes taking pictures better does not reach a balance point, exposure target value cannot be changed according to different lightness environment, cause the problem that image effect is not good, the invention provides a kind of photographic method, device and mobile terminal, below in conjunction with accompanying drawing and embodiment, the present invention is further elaborated.Should be appreciated that specific embodiment described herein only in order to explain the present invention, do not limit the present invention.
Embodiments provide a kind of photographic method, the flow process of the method as shown in Figure 5, comprises step S502 to step S506:
S502, the default debugging constant that the initial exposure desired value under acquisition current scene is corresponding;
S504, determines that the product of default debugging constant and initial exposure desired value is the new exposure target value under current scene;
S506, uses new exposure target value to take pictures to subject.
The embodiment of the present invention adjusts the initial exposure target value under current scene, obtain the default debugging constant under the current scene be stored in configuration file, and preset debugging constant determine a new exposure target value according to this, the exposure target value new according to this is taken pictures, due to new exposure target value be modulated by default debugging constant after value, its shooting effect is better before comparing, the image detail clapped can be made to look more clear, solve because bright dark difference is excessive, the effect obtaining image that causes taking pictures better does not reach a balance point, exposure target value cannot be changed according to different lightness environment, cause the problem that image effect is not good.
When realizing, before the default debugging constant that initial exposure desired value under current scene is corresponding, also need for the initial exposure desired value under each photographed scene in multiple different photographed scene arranges a corresponding default debugging constant respectively, described multiple different photographed scene comprises described current scene; The default debugging constant that initial exposure desired value under current scene is corresponding just can be obtained after this from the multiple default debugging constant of described setting.
Describedly to comprise for the initial exposure desired value under each photographed scene in multiple different photographed scene arranges a corresponding default debugging constant respectively: the chromatic value selecting predetermined number in standard 24 colour atla; The chromatic value of predetermined number is carried out product with the initial exposure desired value under each photographed scene in described multiple different photographed scene, respectively to obtain the new exposure target value of predetermined number; Take pictures according under each photographed scene respectively in described multiple different photographed scene of the new exposure target value of predetermined number again, and select the photo obtained from taking pictures to meet chromatic value corresponding to pre-conditioned photo as the default debugging constant under each photographed scene in described multiple different photographed scene.Wherein, for the utilization of standard 24 colour atla, carry out by experiment, n the chromatic value closed on is selected in standard 24 colour atla, arranging this n the chromatic value closed on respectively is K1 to Kn, initial exposure desired value under each photographed scene in described multiple different photographed scene is t, new exposure target value under each photographed scene in described multiple different photographed scene is K1*t ... Kn*t, obtain n according to the individual new exposure target value shooting of this n and open photo, the photo obtained is contrasted, determine that this n opens in photo and meet a pre-conditioned photo, using chromatic value corresponding for this photo as default debugging constant K corresponding under arranging scene for this reason.
After be provided with a corresponding default debugging constant respectively for the initial exposure desired value under each photographed scene in multiple different photographed scene, can by after described default debugging constant write configuration file, under can utilizing each scene in described configuration file at any time, corresponding default debugging constant is taken.After opening camera function, obtain the initial exposure desired value that current scene is corresponding, configuration file is searched according to current scene, owing to being determined by experiment default debugging constant corresponding to each scene comprised in multiple scenes of current scene before, then can find the default debugging constant corresponding with described current scene in configuration file; The product of described default debugging constant and described initial exposure desired value is set to the new exposure target value under current scene.
When taking pictures, first, detect the position that screen is touched, and obtain the brightness value of subject corresponding to described position.In this process, user touches some positions of screen, and this position may be the details position that user needs to watch, and such as flower, white clouds etc., then terminal detects this position, and obtains the brightness value of subject corresponding to this position.During design, owing to being not easy the specific brightness value of collection one, and the brightness value that only collection one is specific also cannot reach the effect of needs, so, the brightness value of the subject that this position is corresponding can be the brightness value of subject corresponding to this position periphery predetermined areas usually, such as, design obtains the brightness value of subject corresponding to touch location periphery 5mm scope.
Secondly, determine according to this brightness value, new exposure target value the exposure gain that subject is corresponding, concrete, adopt formula to determine, i.e. T=L*M, wherein, T is new exposure target value, and L is the brightness value that described detection obtains, and M is exposure gain.
Finally, according to exposure gain, subject is taken pictures.
The embodiment of the present invention additionally provides a kind of camera arrangement, and this device as shown in Figure 6, comprising:
Acquisition module 10, for obtaining default debugging constant corresponding to initial exposure desired value under current scene; Determination module 20, is coupled with acquisition module 10, for determining that the product of described default debugging constant and described initial exposure desired value is the new exposure target value under current scene; Photo module 30, is coupled with determination module 20, takes pictures to subject for using new exposure target value.
Preferably, above-mentioned acquisition module 10 comprises: acquiring unit, for obtaining initial exposure desired value corresponding to current scene, and selects the default debugging constant corresponding with described current scene in configuration file; Setting unit, is coupled with acquiring unit, for the product of described default debugging constant and described initial exposure desired value being set to the new exposure target value under current scene.Above-mentioned photo module 30 comprises: detecting unit, for detecting the position that screen is touched, and obtains the brightness value of subject corresponding to position; Determining unit, for determining according to brightness value, new exposure target value the exposure gain that subject is corresponding; Photographing unit, for taking pictures to subject according to exposure gain.
Under normal circumstances, arrange before default debugging constant in said apparatus all dispatches from the factory, certainly, also user can be allowed to arrange according to demand, therefore, above-mentioned camera arrangement as shown in Figure 7, can also comprise and arrange module 40, be coupled with acquisition module 10, for arranging a corresponding default debugging constant respectively for the initial exposure desired value under each photographed scene in multiple different photographed scene.
The embodiment of the present invention additionally provides a kind of mobile terminal, and this mobile terminal can integrated above-mentioned camera arrangement, and the mobile terminal being integrated with above-mentioned camera arrangement, except self basic function, also has the camera function of optimization.How by said apparatus setting in the terminal skilled person can know according to above-mentioned record, repeats no more herein.
After above-mentioned camera arrangement or mobile terminal dynamic optimization calculate, the shooting effect of plant as shown in Figure 8, the shooting effect of ceiling and lamp as shown in Figure 9, compared to existing shooting situation, adopts the better effects if of the method shooting after the optimization of the embodiment of the present invention.
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 (10)
1. a photographic method, is characterized in that, comprising:
The default debugging constant that initial exposure desired value under acquisition current scene is corresponding;
Determine that the product of described default debugging constant and described initial exposure desired value is the new exposure target value under current scene;
Described new exposure target value is used to take pictures to subject.
2. photographic method as claimed in claim 1, is characterized in that, before the default debugging constant that the initial exposure desired value under described acquisition current scene is corresponding, also comprise:
For the initial exposure desired value under each photographed scene in multiple different photographed scene arranges a corresponding default debugging constant respectively.
3. photographic method as claimed in claim 2, is characterized in that, describedly comprises for the initial exposure desired value under each photographed scene in multiple different photographed scene arranges a corresponding default debugging constant respectively:
The chromatic value of predetermined number is selected in standard 24 colour atla;
The chromatic value of predetermined number is carried out product with the initial exposure desired value under each photographed scene in described multiple different photographed scene, respectively to obtain the new exposure target value of predetermined number;
Take pictures according under each photographed scene respectively in described multiple different photographed scene of the new exposure target value of predetermined number, and select the photo obtained from taking pictures to meet chromatic value corresponding to pre-conditioned photo as the default debugging constant under each photographed scene in described multiple different photographed scene.
4. the photographic method as described in any one of Claims 2 or 3, is characterized in that, default debugging constant corresponding to the initial exposure desired value under described acquisition current scene comprises:
Obtain the initial exposure desired value that current scene is corresponding, and select the default debugging constant corresponding with described current scene in configuration file;
The product of described default debugging constant and described initial exposure desired value is set to the new exposure target value under current scene.
5. the photographic method according to any one of Claims 1-4, is characterized in that, uses described new exposure target value to take pictures to subject and comprises:
Detect the position that screen is touched, and obtain the brightness value of subject corresponding to described position;
The exposure gain that subject is corresponding is determined according to described brightness value, described new exposure target value;
According to described exposure gain, described subject is taken pictures.
6. a camera arrangement, is characterized in that, comprising:
Acquisition module, for obtaining default debugging constant corresponding to initial exposure desired value under current scene;
Determination module, for determining that the product of described default debugging constant and described initial exposure desired value is the new exposure target value under current scene;
Photo module, takes pictures to subject for using described new exposure target value.
7. camera arrangement as claimed in claim 6, is characterized in that, also comprise:
Module is set, for arranging a corresponding default debugging constant respectively for the initial exposure desired value under each photographed scene in multiple different photographed scene.
8. camera arrangement as claimed in claim 7, it is characterized in that, described acquisition module comprises:
Acquiring unit, for obtaining initial exposure desired value corresponding to current scene, and selects the default debugging constant corresponding with described current scene in configuration file;
Setting unit, for being set to the new exposure target value under current scene by the product of described default debugging constant and described initial exposure desired value.
9. camera arrangement as described in any of claims 8, is characterized in that, described photo module comprises:
Detecting unit, for detecting the position that screen is touched, and obtains the brightness value of subject corresponding to described position;
Determining unit, for determining according to described brightness value, described new exposure target value the exposure gain that subject is corresponding;
Photographing unit, for taking pictures to described subject according to described exposure gain.
10. a mobile terminal, is characterized in that, comprising: the camera arrangement according to any one of claim 6 to 9.
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| WO2018068488A1 (en) * | 2016-10-10 | 2018-04-19 | 硕诺科技（深圳）有限公司 | Method for compensating camera flash vignetting |
| CN108681182A (en) * | 2018-04-24 | 2018-10-19 | 浙江大华技术股份有限公司 | A kind of diaphragm control method and terminal device |
| CN110519513A (en) * | 2019-08-26 | 2019-11-29 | Oppo广东移动通信有限公司 | Anti-fluttering method and device, electronic equipment, computer readable storage medium |
| CN110519485A (en) * | 2019-09-09 | 2019-11-29 | Oppo广东移动通信有限公司 | Image processing method, device, storage medium and electronic equipment |
| CN113891008A (en) * | 2021-06-10 | 2022-01-04 | 荣耀终端有限公司 | Exposure intensity adjusting method and related equipment |
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