CN104394329B - A kind of photographic method, device and mobile terminal - Google Patents

A kind of photographic method, device and mobile terminal Download PDF

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Publication number
CN104394329B
CN104394329B CN201410705159.3A CN201410705159A CN104394329B CN 104394329 B CN104394329 B CN 104394329B CN 201410705159 A CN201410705159 A CN 201410705159A CN 104394329 B CN104394329 B CN 104394329B
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value
current scene
under
target value
scene
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CN104394329A (en
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陈满生
吴超
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Dongguan Yulong Telecommunication Technology Co Ltd
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Dongguan Yulong Telecommunication Technology Co Ltd
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Abstract

The invention discloses a kind of photographic method, device and mobile terminal, wherein, this method includes:Obtain and debugging constant is preset corresponding to the initial exposure desired value under current scene;The product for determining the default debugging constant and the initial exposure desired value is the new exposure target value under current scene;Subject is taken pictures using new exposure target value.By with the present invention, new exposure target value is the value after being modulated by default debugging constant, its shooting effect is more preferable compared to before, the image detail that can make to clap, which looks, to be become apparent from, solve because bright dark difference is excessive, cause to take pictures the effect for obtaining image not reach an equalization point more preferably, exposure target value can not be changed according to different lightness environments, the problem of causing image effect bad.

Description

A kind of photographic method, device and mobile terminal
Technical field
The present invention relates to field of mobile communication, more particularly to a kind of photographic method, device and mobile terminal.
Background technology
Present mobile phone photograph can be all exposed using touch AE (touch automatic exposure), and principle is to utilize use Family finger touches screen area to choose reference object, triggers light-metering, and the brightness of reference object is sensed using sensor inductors, According to the result of sensing using different time for exposure, yield value, aperture-coefficient, so that picture reaches a naked eyes and seemed Comfortable brightness.Such as against sky very bright scene, will by reducing the time for exposure, to reduce yield value, stop down big It is small the image of shooting is seen the details of sky cloud.Similarly, against dark place, can also by change this three Individual coefficient improves the brightness of image.Generally speaking, if it is that human eye seems most easypro that the last brightness of image, which reaches 128, One parameter of clothes.Certainly some different effects can be presented in the different brightness of different scenes.
In order that the photo of shooting reaches a suitable brightness, we can set an AE when effect is debugged Target parameters, that is, exposure target value, in the environment of different brightness, can debug three parameters makes the final brightness of image Reach the desired value of setting, be all using the same whether through global light-metering, center light-metering, spot light-metering or touch screen light-metering Exposure target value.
Prior art is in some bright dark larger scenes of difference, using touch screen light-metering, it may appear that some local overexposures Or it is local excessively dark, so as to cause some details not see Chu.Because user's emphasis to be shot is had nothing in common with each other, for example client claps A plant is taken the photograph, may will touch and show that the region of plant is shot on screen.
The photo for being shot to obtain by the way of touch AE is not as shown in figure 1, by the way of touch AE It is as shown in Figure 2 to shoot obtained photo.It can be seen that in the prior art from two photos, shot using touch AE modes Photo plant brightness is higher, can see the details inside plant, but wall of floor and background etc. it is in kind then can overexposure see not It is clear.And using normal mode central area light-metering, then plant is partially dark, but wall and floor then will not overexposures.
Same reason, if against brighter region touch AE, fluorescent tube internal structure, but smallpox can be seen Other regions of plate are then that a piece of dark does not see Chu, as shown in Figure 3.It is overall if not using touch AE normal photographing That sees is clearer, but fluorescent tube region overexposure can't see details, as shown in Figure 4.
In summary example, it can be seen that existing scheme can have some scenes because bright dark difference is excessive, cause to take pictures The effect for obtaining image does not reach an equalization point more preferably, can not change exposure target value according to different lightness environments, lead Cause image effect bad.
The content 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, to lead Cause the effect for taking pictures to obtain image not reach an equalization point more preferably, exposure target can not be changed according to different lightness environments Value, the problem of causing image effect bad.
On the one hand, the present invention provides a kind of photographic method, including:The initial exposure desired value obtained under current scene is corresponding Default debugging constant;The product for determining the default debugging constant and the initial exposure desired value is new under current scene Exposure target value;Subject is taken pictures using the new exposure target value.
Further, before presetting debugging constant corresponding to the initial exposure desired value obtained under current scene, also wrap Include:Set respectively for the initial exposure desired value under each photographed scene in multiple different photographed scenes pre- corresponding to one If debug constant.
Further, the initial exposure desired value difference under described each photographed scene in multiple different photographed scenes Default debugging constant corresponding to one is set to include:The chromatic value of predetermined number is selected in the colour atla of standard 24;By predetermined number Chromatic value multiplied respectively with the initial exposure desired value under each photographed scene in the multiple different photographed scenes Product, to obtain the new exposure target value of predetermined number;According to the new exposure target value of predetermined number respectively the multiple Taken pictures under each photographed scene in different photographed scenes, and selection meets preparatory condition from the photo for taking pictures to obtain Photo corresponding to chromatic value as the default debugging constant under each photographed scene in the multiple different photographed scenes.
Further, debugging constant is preset corresponding to the initial exposure desired value obtained under current scene includes:Obtain Initial exposure desired value corresponding to current scene, and select default debugging corresponding with the current scene normal in configuration file Number;The new exposure target product of the default debugging constant and the initial exposure desired value being arranged under current scene Value.
Further, using the new exposure target value subject is taken pictures including:Detection screen is touched Position, and obtain the brightness value of the subject of the position correspondence;According to the brightness value, the new exposure target Value determines exposure gain corresponding to subject;The subject is taken pictures according to the exposure gain.
On the other hand, the present invention also provides a kind of camera arrangement, including:Acquisition module, for obtaining under current scene Debugging constant is preset corresponding to initial exposure desired value;Determining module, for determining the default debugging constant and described initial The product of exposure target value is the new exposure target value under current scene;Photo module, for using the new exposure mesh Scale value is taken pictures to subject.
Further, described device also includes:Setup module, for shooting field for each in multiple different photographed scenes Initial exposure desired value under scape is set respectively presets debugging constant corresponding to one.
Further, the acquisition module includes:Acquiring unit, for obtaining initial exposure target corresponding to current scene Value, and default debugging constant corresponding with the current scene is selected in configuration file;Setting unit, for that described will preset The product of debugging constant and the initial exposure desired value is arranged to the new exposure target value under current scene.
Further, the photo module includes:Detection unit, the position touched for detecting screen, and described in acquisition The brightness value of the subject of position correspondence;Determining unit, for according to the brightness value, the new exposure target value come Determine exposure gain corresponding to subject;Photographing unit, for being entered according to the exposure gain to the subject Row is taken pictures.
Another aspect, the present invention provide a kind of mobile terminal, including:Camera arrangement described in any of the above-described.
The present invention is adjusted to initial exposure target value, obtains default debugging constant, and according to the default debugging Constant determines a new exposure target value, is taken pictures according to the exposure target value that this is new, because new exposure target value is Value after being modulated by default debugging constant, its shooting effect is more preferable compared to before, and the image detail that can make to clap is seen Become apparent from, solved because bright dark difference is excessive up, cause to take pictures the effect for obtaining image do not reach more preferably one it is flat Weigh point, can not change exposure target value according to different lightness environment, the problem of causing image effect bad.
Brief description of the drawings
By reading the detailed description of hereafter preferred embodiment, it is various other the advantages of and benefit it is common for this area Technical staff will be clear understanding.Accompanying drawing is only used for showing the purpose of preferred embodiment, and is not considered as to the present invention Limitation.And in whole accompanying drawing, identical part is denoted by the same reference numerals.In the accompanying drawings:
Fig. 1 is the photo for being shot to obtain in the prior art by the way of touch AE;
Fig. 2 is in the prior art without the photo for shooting to obtain by the way of touch AE;
Fig. 3 is the photo for being shot to obtain in the prior art by the way of touch AE;
Fig. 4 is in the prior art without the photo for shooting to obtain by the way of touch AE;
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 obtained in the embodiment of the present invention using photographic method shooting plant;
Fig. 9 is the image obtained in the embodiment of the present invention using photographic method bat ceiling and lamp.
Embodiment
The exemplary embodiment of the disclosure is more fully described below with reference to accompanying drawings.Although the disclosure is shown in accompanying drawing Exemplary embodiment, it being understood, however, that may be realized in various forms the disclosure without should be by embodiments set forth here Limited.On the contrary, these embodiments are provided to facilitate a more thoroughly understanding of the present invention, and can be by the scope of the present disclosure Completely it is communicated to those skilled in the art.
In order to solve prior art because bright dark difference is excessive, the effect for taking pictures to obtain image is caused not reach one more preferably Individual equalization point, exposure target value can not be changed according to different lightness environment, the problem of causing image effect bad, the present invention carries A kind of photographic method, device and mobile terminal have been supplied, below in conjunction with accompanying drawing and embodiment, the present invention has been carried out further detailed Explanation.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, the present invention is not limited.
The embodiments of the invention provide a kind of photographic method, and the flow of this method is as shown in figure 5, including step S502 to step Rapid S506:
S502, obtain and debugging constant is preset corresponding to the initial exposure desired value under current scene;
S504, it is determined that the product of default debugging constant and initial exposure desired value is the new exposure target under current scene Value;
S506, subject is taken pictures using new exposure target value.
The embodiment of the present invention is adjusted to the initial exposure target value under current scene, and acquisition is stored in configuration text Default debugging constant under current scene in part, and a new exposure target value, root are determined according to the default debugging constant Taken pictures according to the new exposure target value, because new exposure target value is after being modulated by default debugging constant Value, its shooting effect is more preferable compared to before, and the image detail that can make to clap, which looks, to be become apparent from, and solves due to bright dark poor It is not excessive, cause to take pictures the effect for obtaining image not reach an equalization point more preferably, can not be changed according to different lightness environments Become exposure target value, the problem of causing image effect bad.
Preset when realizing, corresponding to the initial exposure desired value under current scene before debugging constant, it is also necessary to be more The initial exposure desired value under each photographed scene in individual different photographed scenes is set respectively presets debugging corresponding to one Constant, the multiple different photographed scenes include described current scene;Can is from the multiple pre- of the setting after this Debugging constant is preset corresponding to the initial exposure desired value obtained in constant under current scene if debugging.
Initial exposure desired value under described each photographed scene in multiple different photographed scenes sets one respectively Default debugging constant includes corresponding to individual:The chromatic value of predetermined number is selected in the colour atla of standard 24;By the colourity of predetermined number Value carries out product with the initial exposure desired value under each photographed scene in the multiple different photographed scenes respectively, with To the new exposure target value of predetermined number;Clapped respectively in the multiple difference according still further to the new exposure target value of predetermined number Take the photograph under each photographed scene in scene and taken pictures, and selection meets the photo of preparatory condition from the photo for taking pictures to obtain Corresponding chromatic value is as the default debugging constant under each photographed scene in the multiple different photographed scenes.Wherein, Utilization for the colour atla of standard 24, carried out by testing, the n chromatic values closed on are selected in the colour atla of standard 24, point It is K1 to Kn not set this n chromatic values closed on, first under each photographed scene in the multiple different photographed scenes Beginning exposure target value is t, and the new exposure target value under each photographed scene in the multiple different photographed scenes is K1* T ... Kn*t, shot to obtain n photos according to this n new exposure target values, obtained photo is contrasted, determines this n Meet a photo of preparatory condition in photo, using chromatic value corresponding to the photo as being arranged to corresponding pre- under this scene If debug constant K.
Initial exposure desired value under each photographed scene in for multiple different photographed scenes is respectively provided with one , can be at any time using described after the default debugging constant being write into configuration file after default debugging constant corresponding to individual Corresponding default debugging constant is shot under each scene in configuration file.After opening camera function, current scene is obtained Corresponding initial exposure desired value, configuration file is searched according to current scene, due to being determined by experiment bag before Corresponding to each scene in multiple scenes containing current scene preset debugging constant, then can be found in configuration file with Debugging constant is preset corresponding to the current scene;The product of the default debugging constant and the initial exposure desired value is set The new exposure target value being set under current scene.
When taking pictures, first, the position that detection screen is touched, and obtain the brightness of the subject of the position correspondence Value.In this process, user touches some position of screen, and the position is probably the details position that user needs to watch, Such as flower, white clouds etc., then terminal detects the position, and obtains the brightness value of the subject of the position correspondence.During design, by In being not easy to gather a specific brightness value, and only gather a specific brightness value and be also unable to reach the effects of needs Fruit, so, the brightness value of the subject of the position correspondence generally can be corresponding to the position periphery predetermined areas The brightness value of subject, for example, design obtains the brightness value of subject corresponding to the 5mm scopes of touch location periphery.
Secondly, subject is determined according to the brightness value, new exposure target value corresponding to exposure gain, specifically , determined using formula, i.e. T=L*M, wherein, T is new exposure target value, and L is the brightness value for detecting and obtaining, and M is Exposure gain.
Finally, subject is taken pictures according to exposure gain.
The embodiment of the present invention additionally provides a kind of camera arrangement, the device as shown in fig. 6, including:
Acquisition module 10, debugging constant is preset corresponding to the initial exposure desired value under current scene for obtaining;It is determined that Module 20, coupled with acquisition module 10, for determining that the default debugging constant and the product of the initial exposure desired value be New exposure target value under current scene;Photo module 30, coupled with determining module 20, for using new exposure target value Subject is taken pictures.
Preferably, above-mentioned acquisition module 10 includes:Acquiring unit, for obtaining initial exposure target corresponding to current scene Value, and default debugging constant corresponding with the current scene is selected in configuration file;Setting unit, with acquiring unit coupling Close, for the new exposure being arranged to the product of the default debugging constant and the initial exposure desired value under current scene Desired value.Above-mentioned photo module 30 includes:Detection unit, the position touched for detecting screen, and obtain position correspondence The brightness value of subject;Determining unit, for determining that subject is corresponding according to brightness value, new exposure target value Exposure gain;Photographing unit, for being taken pictures according to exposure gain to subject.
Under normal circumstances, the default debugging constant in said apparatus is set before all dispatching from the factory, it is of course also possible to allow user It is configured according to demand, therefore, above-mentioned camera arrangement can be with as shown in fig. 7, comprises setup module 40, with acquisition module 10 Coupling, for for the initial exposure desired value under each photographed scene in multiple different photographed scenes set respectively one it is right The default debugging constant answered.
The embodiment of the present invention additionally provides a kind of mobile terminal, and the mobile terminal can integrate above-mentioned camera arrangement, integrates The mobile terminal of above-mentioned camera arrangement is also equipped with the camera function of optimization in addition to itself basic function.Ability technology people Member according to above-mentioned record could be aware that how by said apparatus set in the terminal, here is omitted.
After being calculated by above-mentioned camera arrangement or mobile terminal dynamic optimization, the shooting effect of plant as shown in figure 8, The shooting effect of ceiling and lamp is as shown in figure 9, for existing shooting situation, using the optimization of the embodiment of the present invention The effect of method shooting afterwards is more preferable.
Obviously, those skilled in the art can carry out the essence of various changes and modification without departing from the present invention to the present invention God and scope.So, if these modifications and variations of the present invention belong to the scope of the claims in the present invention and its equivalent technologies Within, then the present invention is also intended to comprising including these changes and modification.

Claims (7)

  1. A kind of 1. photographic method, it is characterised in that including:
    Obtain and debugging constant is preset corresponding to the initial exposure desired value under current scene;
    The product for determining the default debugging constant and the initial exposure desired value is the new exposure target under current scene Value;
    Subject is taken pictures using the new exposure target value;
    Wherein, before presetting debugging constant corresponding to the initial exposure desired value obtained under current scene, in addition to:
    Set respectively corresponding to one for the initial exposure desired value under each photographed scene in multiple different photographed scenes Default debugging constant, is specifically included:
    The chromatic value of the first predetermined number is selected in the colour atla of standard 24;
    The chromatic value of first predetermined number is subjected to product with the initial exposure desired value under the current scene respectively, to obtain The new exposure target value of second predetermined number;
    Taken pictures under the current scene according to the new exposure target value of the second predetermined number, and clapped from each respectively Take the photograph under scene selection in the photo for taking pictures to obtain and meet chromatic value corresponding to the photo of preparatory condition as under present filming scene Default debugging constant.
  2. 2. photographic method as claimed in claim 1, it is characterised in that the initial exposure desired value obtained under current scene Corresponding default debugging constant includes:
    Initial exposure desired value corresponding to current scene is obtained, and selection is corresponding with the current scene pre- in configuration file If debug constant.
  3. 3. photographic method as claimed in claim 2, it is characterised in that using the new exposure target value to subject Taken pictures including:
    The position that detection screen is touched, and obtain the brightness value of the subject of the position correspondence;
    Exposure gain corresponding to determining subject according to the brightness value, the new exposure target value;
    The subject is taken pictures according to the exposure gain.
  4. A kind of 4. camera arrangement, it is characterised in that including:
    Acquisition module, debugging constant is preset corresponding to the initial exposure desired value under current scene for obtaining;
    Determining module, the product for determining the default debugging constant and the initial exposure desired value are under current scene New exposure target value;
    Photo module, for being taken pictures using the new exposure target value to subject;
    Setup module, for being set respectively for the initial exposure desired value under each photographed scene in multiple different photographed scenes Put and debugging constant is preset corresponding to one, specifically include:The chromatic value of the first predetermined number is selected in the colour atla of standard 24;By The chromatic value of one predetermined number carries out product with the initial exposure desired value under the current scene respectively, default to obtain second The new exposure target value of number;Carried out respectively under the current scene according to the new exposure target value of the second predetermined number Take pictures, and selection meets chromatic value corresponding to the photo of preparatory condition and made in the photo for taking pictures under each photographed scene to obtain For the default debugging constant under present filming scene.
  5. 5. camera arrangement as claimed in claim 4, it is characterised in that the acquisition module includes:
    Acquiring unit, for obtaining initial exposure desired value corresponding to current scene, and selection is worked as with described in configuration file Debugging constant is preset corresponding to preceding scene.
  6. 6. camera arrangement as claimed in claim 5, it is characterised in that the photo module includes:
    Detection unit, the position touched for detecting screen, and obtain the brightness value of the subject of the position correspondence;
    Determining unit, for exposure corresponding to determining subject according to the brightness value, the new exposure target value Gain;
    Photographing unit, for being taken pictures according to the exposure gain to the subject.
  7. A kind of 7. mobile terminal, it is characterised in that including:Camera arrangement any one of claim 4 to 6.
CN201410705159.3A 2014-11-28 2014-11-28 A kind of photographic method, device and mobile terminal Active CN104394329B (en)

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CN106375636B (en) * 2016-10-10 2018-07-17 硕诺科技(深圳)有限公司 A kind of compensation method of the vignetting effect of the flash of light of camera
CN108681182B (en) * 2018-04-24 2020-08-04 浙江大华技术股份有限公司 Aperture control method and terminal equipment
CN110519513B (en) * 2019-08-26 2022-01-25 Oppo广东移动通信有限公司 Anti-shake method and apparatus, electronic device, computer-readable storage medium
CN110519485B (en) * 2019-09-09 2021-08-31 Oppo广东移动通信有限公司 Image processing method, image processing device, storage medium and electronic equipment
CN115250328A (en) * 2021-04-27 2022-10-28 北京小米移动软件有限公司 Image pickup method, image pickup device, terminal equipment and computer readable storage medium
CN113891008B (en) * 2021-06-10 2022-08-09 荣耀终端有限公司 Exposure intensity adjusting method and related equipment

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