CN105323382A - Display screen supplementary lighting method and device as well as mobile terminal - Google Patents
Display screen supplementary lighting method and device as well as mobile terminal Download PDFInfo
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- CN105323382A CN105323382A CN201510746582.2A CN201510746582A CN105323382A CN 105323382 A CN105323382 A CN 105323382A CN 201510746582 A CN201510746582 A CN 201510746582A CN 105323382 A CN105323382 A CN 105323382A
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
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Abstract
The embodiment of the invention discloses a display screen supplementary lighting method and device as well as a mobile terminal. The method comprises the following steps: monitoring a photographing event of a front camera; controlling a display screen to start supplementary lighting; judging whether adjustment of an automatic exposure parameter is finished or not; if yes, controlling the display screen to stop supplementary lighting. As the display screen is controlled to stop supplementary lighting when the judging result shows that the adjustment of the automatic exposure parameter is finished, the lasting time of the supplementary lighting state of the display screen is determined by the fact that whether the adjustment of the automatic exposure parameter is finished or not. Only when the adjustment of the automatic exposure parameter is finished, can a selfie obtain proper exposure, and the imaging brightness is accurate; moreover, as soon as the adjustment of the automatic exposure parameter is finished, a photo is taken, and the display screen is controlled to stop supplementary lighting, so that power consumption of the display screen is reduced to the most extent. Therefore, the supplementary lighting time can be determined accurately; supplementary lighting effect can be improved; moreover, the power consumption of the display screen can be reduced to prolong the standby time of the mobile terminal and improve user experience.
Description
Technical field
The embodiment of the present invention relates to technical field of mobile terminals, particularly relates to a kind of screen light compensation method, device and mobile terminal.
Background technology
At present, camera has become the standard configuration of large multi-mobile-terminal, and along with the continuous lifting of camera performance, the camera function in mobile terminal also from strength to strength, brings facility for liking the user taken pictures.
Many mobile phone users are all liked using the front-facing camera on mobile terminal to autodyne, but the front-facing camera of existing mobile terminal is not all equipped with light compensating lamp, autodyne in night or the poor environment of light, can be difficult to because of under-exposed obtain desirable auto heterodyne effect.
In order to obtain suitable exposure when user autodynes, existing a kind of scheme comes for front-facing camera light filling when autodyning by lighting screen (control display screen and show suitable brightness), but, in existing scheme, screen keeps time of illuminating state to be all fixing, and is different to the requirement of light filling time under different light rays environment.If the light filling time is too short, lightness can be caused inadequate; If light filling overlong time, can power consumption of screen be increased, and affect Consumer's Experience.So existing screen light filling scheme light filling effect is undesirable, cannot meet consumers' demand.
Summary of the invention
The object of the embodiment of the present invention is to provide a kind of screen light compensation method, device and mobile terminal, to solve existing screen light filling scheme to cause light filling weak effect problem because the light filling time is improper.
First aspect, embodiments provides a kind of screen light compensation method, comprising:
Monitor front-facing camera to take pictures event;
Control display screen and start light filling;
Judge whether automatic exposure parameter adjusts complete, if so, then control described display screen and stop light filling.
Second aspect, embodiments provides a kind of screen light compensating apparatus, comprising:
Monitoring modular, to take pictures event for monitoring front-facing camera;
Light filling starts control module, for monitor front-facing camera take pictures event time, control display screen start light filling;
Light filling stops control module, complete for judging whether automatic exposure parameter adjusts, and if so, then controls described display screen and stops light filling.
The third aspect, embodiments provides a kind of mobile terminal, comprises the screen light compensating apparatus in the embodiment of the present invention.
The screen light filling scheme provided in the embodiment of the present invention, monitor front-facing camera take pictures event time, control display screen start light filling, judge whether automatic exposure parameter adjusts subsequently complete, if so, then control described display screen stopping light filling.By adopting technique scheme, when judging that automatic exposure parameter adjustment is complete, controlling display screen and stopping light filling, so whether time of display screen maintenance light filling state is adjusted by automatic exposure parameter is completely determined.Only have when automatic exposure parameter adjustment is complete, can ensure to obtain suitable exposure from taking a picture, brightness of image is accurate; Further, after automatic exposure parameter adjustment, taking pictures in time and controlling display screen stops light filling, can save power consumption of screen.So the embodiment of the present invention can determine the light filling time exactly, improves light filling effect, saves power consumption of screen simultaneously, extend the mobile terminal standby time, promote Consumer's Experience.
Accompanying drawing explanation
The schematic flow sheet of a kind of screen light compensation method that Fig. 1 provides for the embodiment of the present invention one;
The schematic flow sheet of a kind of screen light compensation method that Fig. 2 provides for the embodiment of the present invention two;
The schematic flow sheet of a kind of preferred screen light compensation method that Fig. 3 provides for the embodiment of the present invention three;
The structured flowchart of a kind of screen light compensating apparatus that Fig. 4 provides for the embodiment of the present invention four.
Embodiment
Technical scheme of the present invention is further illustrated by embodiment below in conjunction with accompanying drawing.Be understandable that, specific embodiment described herein is only for explaining the present invention, but not limitation of the invention.It also should be noted that, for convenience of description, illustrate only part related to the present invention in accompanying drawing but not entire infrastructure.
Before in further detail exemplary embodiment being discussed, it should be mentioned that some exemplary embodiments are described as the process or method described as flow chart.Although each step is described as the process of order by flow chart, many steps wherein can be implemented concurrently, concomitantly or simultaneously.In addition, the order of each step can be rearranged.Described process can be terminated when its operations are completed, but can also have the additional step do not comprised in the accompanying drawings.Described process can correspond to method, function, code, subroutine, subprogram etc.
Embodiment one
The schematic flow sheet of a kind of screen light compensation method that Fig. 1 provides for the embodiment of the present invention one, the method can be performed by screen light compensating apparatus, and wherein this device can by software and/or hardware implementing, and general accessible site in the terminal.As shown in Figure 1, the method comprises:
Step 101, monitor front-facing camera and to take pictures event.
Exemplary, the mobile terminal in the present embodiment specifically can be the terminal equipment that mobile phone, panel computer and digital camera etc. are configured with display screen.
Exemplary, described front-facing camera event of taking pictures specifically can refer to that user opens camera function, and current adopted camera is front-facing camera (or current adopted camera is switched to front-facing camera by user); Also can refer to that user presses shooting push button etc. when current adopted camera is front-facing camera.
Preferably, monitor front-facing camera take pictures event time, also automatically can detecting under mobile terminal current environment the need of carrying out screen light filling, if do not needed, then directly can carry out normal photographing; If need, then perform step 102.Exemplary, when the light intensity of current environment being detected lower than predetermined threshold value, then think and need to carry out screen light filling.Described predetermined threshold value can be arranged by system default or arrange according to the personal habits of user.
Step 102, control display screen start light filling.
In the present embodiment, the concrete light filling mode of display screen can have various ways, and the present embodiment is also not specifically limited.Such as, first can obtain the light intensity of current environment, environmentally light intensity decides how to carry out light filling.Concrete, in order to ensure that user can see viewfinder image in real time, environmentally can determine a suitable brightness of display screen value by light intensity, controlling whole display screen with this brightness of display screen value and show, thus the light intensity at face place is strengthened; In order to promote light filling effect, also can (white-based color region can take part display screen at the display screen display white background color of mobile terminal, also whole display screen can be taken), environmentally light intensity determines the brightness of white-based color, ambient light intensity is lower, the brightness then controlling white-based color is higher, thus the light intensity at face place is strengthened.
Step 103, to judge whether automatic exposure parameter adjusts complete, if so, then controls described display screen and stop light filling.
Exemplary, automatic exposure is that mobile terminal adjusts exposure automatically according to the power of light, prevents over-exposed or not enough.Described automatic exposure (AutomaticExposure, AE) parameter specifically can comprise the time for exposure.Time for exposure specifically can be regarded as the time interval that shutter is opened to closedown, and the length of time for exposure directly can have influence on the brightness of captured photo.
The adjustment mode of automatic exposure parameter can have multiple, and specifically by concrete configuration and the design decision of different mobile terminal, the present embodiment does not do concrete restriction.But no matter adopt which kind of adjustment mode, the process of adjustment automatic exposure parameter all needs certain hour, such as 0.5 second, and concrete regulation time length neither be fixed, relevant to the factor such as the light intensity of shooting environmental.If just controlled display screen to stop light filling before automatic exposure parameter adjustment is complete, so current automatic exposure parameter is inaccurate, the brightness of captured photo also can not reach desired effect, so need after automatic exposure parameter adjustment, just controls display screen and stops light filling.In addition, if after automatic exposure parameter adjustment, display screen still continues light filling, also can increase the power consumption of display screen, shortens the stand-by time of mobile terminal.
Be understandable that, the action of taking pictures complete in display screen light filling process.So preferably, this step specifically can comprise: judge whether automatic exposure parameter adjusts complete, if so, then control described front-facing camera and take pictures according to the complete automatic exposure parameter of adjustment; Control described display screen and stop light filling.
The screen light compensation method that the embodiment of the present invention one provides, monitors front-facing camera and to take pictures event, controls display screen and starts light filling, judge whether automatic exposure parameter adjusts subsequently complete, if so, then controls described display screen stopping light filling.By adopting technique scheme, when judging that automatic exposure parameter adjustment is complete, controlling display screen and stopping light filling, so whether time of display screen maintenance light filling state is adjusted by automatic exposure parameter is completely determined.Only have when automatic exposure parameter adjustment is complete, can ensure to obtain suitable exposure from taking a picture, brightness of image is accurate; Further, after automatic exposure parameter adjustment, taking pictures in time and controlling display screen stops light filling, can save power consumption of screen.So the embodiment of the present invention can determine the light filling time exactly, improves light filling effect, saves power consumption of screen simultaneously, extend the mobile terminal standby time, promote Consumer's Experience.
On the basis of above-described embodiment, preferably, after control front-facing camera is taken pictures according to the complete automatic exposure parameter of adjustment, can control display screen immediately and stop light filling, the benefit done like this is to save power consumption of screen to greatest extent.The method is particularly useful for postponing (ZeroSecondDelay, ZSD in 0 second; Also known as ZeroSecondLater, ZSL) exposal model.The described photographing instruction that specifically can be regarded as according to detecting of taking pictures generates final photo.For common exposal model, after photographing instruction being detected, also need to carry out to focus and the adjustment such as white balance, the final photo generated is according to the Computer image genration detected after photographing instruction, stops light filling directly affecting light filling effect so control display screen immediately; For ZSD exposal model, before photographing instruction being detected, focusing and white balance etc. regulate and have completed, the photo of final generation is the Computer image genration according to the image that obtains when photographing instruction being detected or buffer memory before, stop light filling also can not impacting the final photo generated even if control display screen immediately, also can save power consumption of screen to greatest extent.
Embodiment two
The schematic flow sheet of a kind of screen light compensation method that Fig. 2 provides for the embodiment of the present invention two, the present embodiment is optimized based on above-described embodiment, in the present embodiment, " judging whether automatic exposure parameter adjusts complete " is optimized for: obtain target picture brightness value; Judge that whether current automatic exposure parameter is corresponding with described target picture brightness value, if corresponding, then determine that automatic exposure parameter adjustment is complete.
Further, judge that whether current automatic exposure parameter is corresponding with described target picture brightness value, if corresponding, then determine that automatic exposure parameter adjustment is complete, specifically can comprise: control described front-facing camera according to current automatic exposure parameter acquiring intermediate images; Judge that whether the brightness value of described intermediate images is identical with described target picture brightness value, if identical, then determine that described current automatic exposure parameter is corresponding with described target picture brightness value.
Accordingly, the method for the present embodiment comprises the steps:
Step 201, monitor front-facing camera and to take pictures event.
Step 202, control display screen start light filling.
Step 203, acquisition target picture brightness value.
Exemplary, target picture brightness value can be regarded as the optimal brightness value that shooting photo out can reach, and before taking pictures, target picture brightness value can be arranged by system default, also can arrange according to the operation of user.
Step 204, control front-facing camera are according to current automatic exposure parameter acquiring intermediate images.
Exemplary, the initial value of automatic exposure parameter can be arranged by system default, also can estimate according to current environment light intensity.
Step 205, judge that whether the brightness value of intermediate images is identical with target picture brightness value, if so, then perform step 206; Otherwise, perform step 207.
Step 206, determine that current automatic exposure parameter is corresponding with described target picture brightness value, automatic exposure parameter adjustment is complete, performs step 208.
Exemplary, when the brightness of the intermediate images obtained according to current automatic exposure parameter is identical with target picture brightness value, illustrate that current automatic exposure parameter is corresponding with target picture brightness value, adopt the lightness value captured by automatic exposure parameter now also can reach target picture brightness value, so can think that automatic exposure parameter adjustment is complete.
Step 207, adjustment automatic exposure parameter, and using the automatic exposure parameter after adjustment as new current automatic exposure parameter, and return execution step 204.
Exemplary, when the brightness of the intermediate images obtained according to current automatic exposure parameter is different from target picture brightness value, current automatic exposure parameter is described and improper, adjustment automatic exposure parameter should be continued.Exemplary, can increase the time for exposure, concrete increase how many time for exposure can be determined on a case-by-case basis, and the present embodiment does not do concrete restriction.The amplitude of each adjustment automatic exposure parameter can be identical, also can be different, and be related to from adjust to the length of adjustment complete time.
Step 208, control front-facing camera are taken pictures according to the complete automatic exposure parameter of adjustment.
Step 209, control display screen stop light filling.
The screen light compensation method that the embodiment of the present invention two provides, by judging that whether current automatic exposure parameter is corresponding with described target picture brightness value, determine whether automatic exposure parameter adjusts complete, accurately can determine that automatic exposure parameter completes the moment of adjustment, thus determine to control the opportunity that display screen stops light filling, improve light filling effect further, promote Consumer's Experience.
Embodiment three
The schematic flow sheet of a kind of preferred screen light compensation method that Fig. 3 provides for the embodiment of the present invention three.The present embodiment is optimized based on above-described embodiment, specifically comprises the steps:
Step 301, enter front-facing camera exposal model, and open screen light filling function.
Step 302, monitor user and press key of taking pictures, control display screen and start light filling.
Step 303, employing automatic exposure state modulator algorithm enter automatic exposure parameter adjustment flow process.
In the present embodiment, automatic exposure state modulator (AutomaticExposureControl, AEC) algorithm may because the concrete configuration of different mobile terminal is different difference to some extent, but those skilled in the art all can make accommodation according to current developed mobile terminal configuration, and the present embodiment does not do concrete restriction.
Step 304, when judging that automatic exposure parameter adjustment is complete, by automatic exposure state modulator algorithm, automatic exposure optimum configurations variable is set to 1.
Exemplary, when after AE parameter stability, be namely equivalent to AE parameter adjustment complete, by AEC algorithm, aec_settle variable can be set to 1.Wherein, aec_settle variable is only as example, and designer can adjust according to actual conditions.
Step 305, application layer obtain the value that automatic exposure parameter arranges variable, when confirming that this value is 1, send photographing command, and control display screen stopping light filling.
Exemplary, the application layer of mobile terminal obtains the value of aec_settle, on duty when being 1, sends take_picture order, controls front-facing camera and take pictures, and control display screen stopping light filling, complete auto heterodyne.Concrete, the present embodiment is particularly useful for ZSD exposal model, when take_picture order being detected, according to the image of current time acquisition or photo that between AE parameter adjustment complete moment and current time, the Computer image genration of buffer memory is final.
The preferred screen light compensation method that the embodiment of the present invention three provides, can determine the light filling time exactly, improve light filling effect, save power consumption of screen simultaneously, extends the mobile terminal standby time, promotes Consumer's Experience.
Embodiment four
The structured flowchart of a kind of screen light compensating apparatus that Fig. 4 provides for the embodiment of the present invention four, this device can by software and/or hardware implementing, generally in the terminal integrated, carry out light filling when the front-facing camera of mobile terminal is taken pictures by display screen by performing screen light compensation method.As shown in Figure 4, this device comprises monitoring modular 401, light filling starts control module 402 and light filling stops control module 403.
Wherein, monitoring modular 401, to take pictures event for monitoring front-facing camera; Light filling starts control module 402, for monitor front-facing camera take pictures event time, control display screen start light filling; Light filling stops control module 403, complete for judging whether automatic exposure parameter adjusts, and if so, then controls described display screen and stops light filling.
The screen light compensating apparatus provided in the embodiment of the present invention, when monitoring modular 401 monitor front-facing camera take pictures event time, light filling starts control module 402 and controls display screen and start light filling, light filling stops control module 403 to judge whether automatic exposure parameter adjusts complete subsequently, if so, then control described display screen and stop light filling.By adopting technique scheme, when judging that automatic exposure parameter adjustment is complete, controlling display screen and stopping light filling, so whether time of display screen maintenance light filling state is adjusted by automatic exposure parameter is completely determined.Only have when automatic exposure parameter adjustment is complete, can ensure to obtain suitable exposure from taking a picture, brightness of image is accurate; Further, after automatic exposure parameter adjustment, taking pictures in time and controlling display screen stops light filling, can save power consumption of screen.So the embodiment of the present invention can determine the light filling time exactly, improves light filling effect, saves power consumption of screen simultaneously, extend the mobile terminal standby time, promote Consumer's Experience.
On the basis of above-described embodiment, described light filling stopping control module can comprising judging unit, take pictures control unit and light filling stop control unit.Wherein, judging unit, complete for judging whether automatic exposure parameter adjusts; To take pictures control unit, for when described judging unit judges that automatic exposure parameter adjustment is complete, control described front-facing camera and take pictures according to the complete automatic exposure parameter of adjustment; Light filling stop control unit, stops light filling for controlling described display screen.
On the basis of above-described embodiment, described judging unit can comprise brightness value and obtain subelement and judgment sub-unit.Wherein, brightness value obtains subelement, for obtaining target picture brightness value; Judgment sub-unit, for judging that whether current automatic exposure parameter is corresponding with described target picture brightness value, if corresponding, then determines that automatic exposure parameter adjustment is complete.
On the basis of above-described embodiment, described judgment sub-unit can be specifically for: control described front-facing camera according to current automatic exposure parameter acquiring intermediate images; Judge that whether the brightness value of described intermediate images is identical with described target picture brightness value, if identical, then determine that described current automatic exposure parameter is corresponding with described target picture brightness value.
On the basis of above-described embodiment, described automatic exposure parameter can comprise the time for exposure.
Embodiment five
The present embodiment five provides a kind of mobile terminal, and this mobile terminal comprises the screen light compensating apparatus described in the embodiment of the present invention, carrys out light filling by performing screen light compensation method when front-facing camera is taken pictures by display screen.
Exemplary, the mobile terminal in the present embodiment specifically can be the terminal equipment that mobile phone, panel computer and digital camera etc. are configured with display screen.Be preferably smart mobile phone.
When the mobile terminal using the embodiment of the present invention to provide, to take pictures event if monitor front-facing camera, control display screen and start light filling, judge whether automatic exposure parameter adjusts subsequently complete, if so, then control display screen stopping light filling.This mobile terminal can determine the light filling time exactly, improves light filling effect, saves power consumption of screen simultaneously, extends the mobile terminal standby time, promotes Consumer's Experience.
The screen light compensating apparatus provided in above-described embodiment and mobile terminal can perform the screen light compensation method that any embodiment of the present invention provides, and possess and perform the corresponding functional module of the method and beneficial effect.The not ins and outs of detailed description in the above-described embodiments, the screen light compensation method that can provide see any embodiment of the present invention.
Note, above are only preferred embodiment of the present invention and institute's application technology principle.Skilled person in the art will appreciate that and the invention is not restricted to specific embodiment described here, various obvious change can be carried out for a person skilled in the art, readjust and substitute and can not protection scope of the present invention be departed from.Therefore, although be described in further detail invention has been by above embodiment, the present invention is not limited only to above embodiment, when not departing from the present invention's design, can also comprise other Equivalent embodiments more, and scope of the present invention is determined by appended right.
Claims (10)
1. a screen light compensation method, is characterized in that, comprising:
Monitor front-facing camera to take pictures event;
Control display screen and start light filling;
Judge whether automatic exposure parameter adjusts complete, if so, then control described display screen and stop light filling.
2. method according to claim 1, is characterized in that, described to judge whether automatic exposure parameter adjusts complete, if so, then controls described display screen and stops light filling, comprising:
Judge whether automatic exposure parameter adjusts complete, if so, then control described front-facing camera and take pictures according to the complete automatic exposure parameter of adjustment;
Control described display screen and stop light filling.
3. method according to claim 1, is characterized in that, described to judge whether automatic exposure parameter adjusts complete, comprising:
Obtain target picture brightness value;
Judge that whether current automatic exposure parameter is corresponding with described target picture brightness value, if corresponding, then determine that automatic exposure parameter adjustment is complete.
4. method according to claim 3, is characterized in that, judges that whether current automatic exposure parameter is corresponding with described target picture brightness value, if corresponding, then determine that automatic exposure parameter adjustment is complete, comprising:
Control described front-facing camera according to current automatic exposure parameter acquiring intermediate images;
Judge that whether the brightness value of described intermediate images is identical with described target picture brightness value, if identical, then determine that described current automatic exposure parameter is corresponding with described target picture brightness value.
5. method according to claim 1, is characterized in that, described automatic exposure parameter comprises the time for exposure.
6. a screen light compensating apparatus, is characterized in that, comprising:
Monitoring modular, to take pictures event for monitoring front-facing camera;
Light filling starts control module, for monitor front-facing camera take pictures event time, control display screen start light filling;
Light filling stops control module, complete for judging whether automatic exposure parameter adjusts, and if so, then controls described display screen and stops light filling.
7. device according to claim 6, is characterized in that, described light filling stops control module comprising:
Judging unit, complete for judging whether automatic exposure parameter adjusts;
To take pictures control unit, for when described judging unit judges that automatic exposure parameter adjustment is complete, control described front-facing camera and take pictures according to the complete automatic exposure parameter of adjustment;
Light filling stop control unit, stops light filling for controlling described display screen.
8. device according to claim 6, is characterized in that, described judging unit comprises:
Brightness value obtains subelement, for obtaining target picture brightness value;
Judgment sub-unit, for judging that whether current automatic exposure parameter is corresponding with described target picture brightness value, if corresponding, then determines that automatic exposure parameter adjustment is complete.
9. device according to claim 8, is characterized in that, described judgment sub-unit specifically for:
Control described front-facing camera according to current automatic exposure parameter acquiring intermediate images; Judge that whether the brightness value of described intermediate images is identical with described target picture brightness value, if identical, then determine that described current automatic exposure parameter is corresponding with described target picture brightness value.
10. a mobile terminal, is characterized in that, comprises as the screen light compensating apparatus as described in arbitrary in claim 6-9.
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| CN106775260A (en) * | 2017-01-18 | 2017-05-31 | 广州恒业软件科技有限公司 | A kind of auto heterodyne light compensation method and its system |
| CN114040122A (en) * | 2020-12-02 | 2022-02-11 | 海信视像科技股份有限公司 | Display device, image processing method and device |
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