CN105554406B - The control method and device of screen light filling - Google Patents
The control method and device of screen light filling Download PDFInfo
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- CN105554406B CN105554406B CN201510882105.9A CN201510882105A CN105554406B CN 105554406 B CN105554406 B CN 105554406B CN 201510882105 A CN201510882105 A CN 201510882105A CN 105554406 B CN105554406 B CN 105554406B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
- H04N23/70—Circuitry for compensating brightness variation in the scene
- H04N23/74—Circuitry for compensating brightness variation in the scene by influencing the scene brightness using illuminating means
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
- H04N23/70—Circuitry for compensating brightness variation in the scene
- H04N23/73—Circuitry for compensating brightness variation in the scene by influencing the exposure time
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Abstract
The invention discloses a kind of control method and device of screen light filling.This method includes：Obtain focusing the distance between main body and camera；According to focusing the distance between the main body and camera, light luminance to be supplemented and the intensity for setting light, the light-emitting area of screen is calculated；In the setting position of screen, the screen that the light-emitting area is lighted with the intensity for setting light carries out screen light filling.The present invention can be rapidly reached the light luminance of needs, shorten the time of screen light filling, improve the efficiency of screen light filling so that user does not need to wait for longer time that can photograph satisfied photo again.
Description
Technical field
The present embodiments relate to field of photographing technology more particularly to a kind of control method and device of screen light filling.
Background technology
With the rapid development of information and communication technology (ICT), mobile terminal develops rapidly, and the function of mobile terminal is more next
It is more powerful.With the raising of requirement of the people to self-timer, when light is bad, customer satisfaction system photo is enabled it is difficult to take,
Therefore there is the quality that shooting photo is improved using screen light filling.
In the prior art, when carrying out screen light filling, mainly screen light filling is controlled using the time of screen light filling is controlled
Luminous intensity, the time of such light filling is long, and the long time is waited for when can lead to user using this function.
Invention content
In view of this, the embodiment of the present invention provides a kind of control method and device of screen light filling, to shorten the benefit of screen
Between light time, screen light filling efficiency is improved.
In a first aspect, an embodiment of the present invention provides a kind of control method of screen light filling, the method includes：
Obtain focusing the distance between main body and camera；
According to focusing the distance between the main body and camera, light luminance to be supplemented and the intensity for setting light, calculate
The light-emitting area of screen；
In the setting position of screen, the screen that the light-emitting area is lighted with the intensity for setting light carries out screen light filling.
Second aspect, the embodiment of the present invention additionally provide a kind of control device of screen light filling, and described device includes：
Apart from acquisition module, for obtaining focus the distance between main body and camera；
Light-emitting area computing module, for bright according to focusing the distance between the main body and camera, light to be supplemented
The intensity of degree and setting light calculates the light-emitting area of screen；
Screen supplementary lighting module, in the setting position of screen, the screen of the light-emitting area to be lighted with the intensity for setting light
Curtain carries out screen light filling.
The technical solution of the embodiment of the present invention, after acquisition focusing the distance between main body and camera, according to focusing
The distance between main body and camera, light luminance to be supplemented and the intensity for setting light calculate the light-emitting area of screen, in screen
Setting position with set the intensity of light light the light-emitting area screen carry out screen light filling, needs can be rapidly reached
Light luminance shortens the time of screen light filling, improves the efficiency of screen light filling so that user does not need to wait for again longer
Time can photograph satisfied photo.
Description of the drawings
Fig. 1 is a kind of flow chart of the control method for screen light filling that the embodiment of the present invention one provides；
Fig. 2 is a kind of flow chart of the control method of screen light filling provided by Embodiment 2 of the present invention；
Fig. 3 is a kind of structure diagram of the control device for screen light filling that the embodiment of the present invention three provides.
Specific embodiment
The present invention is described in further detail with reference to the accompanying drawings and examples.It is understood that this place is retouched
The specific embodiment stated is used only for explaining the present invention rather than limitation of the invention.It also should be noted that in order to just
Part related to the present invention rather than full content are illustrated only in description, attached drawing.
Embodiment one
Fig. 1 is a kind of flow chart of the control method for screen light filling that the embodiment of the present invention one provides, and the present embodiment can fit
The situation of screen light filling is controlled during for using camera self-timer, this method can perform by mobile terminal, specifically include as
Lower step：
Step 110, focusing the distance between main body and camera are obtained.
Focusing main body when self-timer (object to be shot, refer to user) and camera are obtained using hardware or software approach
The distance between.Wherein, hardware means can be to increase light-emitting device, transmitting light beam, right after light beam arrival focusing main body
The reflection of burnt main body is receiving reflected light, can record from transmitting a light beam to time for receiving reflected light, according to the time and light
Focusing the distance between main body and camera can be calculated in spread speed.Software approach also has very much, such as utilizes phase pair
Focusing the distance between main body and camera can be calculated in coke, can also shoot multiple pictures, multiple pictures be carried out pair
Than analysis, focusing the distance between main body and camera are obtained.
Step 120, according to the strong of focusing the distance between the main body and camera, light luminance to be supplemented and setting light
Degree calculates the light-emitting area of screen.
Since the intensity for the light for reaching object is inversely proportional with distance, for example assume in the position that current distance is 1, light
Intensity be 1, then in the position that distance is 2, the intensity of light will decay, and only remaining (1/2) * (1/2) is 1/4, i.e. light
Intensity and distance square be inversely proportional；And the intensity of screen light filling, it is directly proportional to the area of luminous component in screen,
Therefore, it can be calculated according to focusing the distance between main body and camera, light luminance to be supplemented and the intensity for setting light
The light-emitting area of screen.
Wherein, light luminance to be supplemented can be set according to the brightness of the light in the focusing main body got,
It can be obtained by the brightness calculation for the light in main body of focusing.
When using screen light filling, the intensity of light filling is generally set as to the maximum emission intensity of screen, i.e., it is described to set
The intensity for determining light refers to the maximum emission intensity of screen, in order to which the brightness for causing the light in focusing main body is rapidly reached needs
Brightness.
Wherein, luminous intensity (luminous intensity) is the luminous flux that light source radiates in unit solid angle, unit
For candela (candela, abbreviation cd), 1 candela represents to give off the luminous flux of 1 lumen in unit solid angle；Brightness
(luminance) refer to the light levels on a surface, i.e., the luminous flux reflected from a surface.Different objects have light
Different reflectance factors or absorption coefficient.The intensity of light can be measured with the total amount according to light in the plane, this cry incident light or
Illumination, if measuring the intensity of light with the light quantity in from plane reflection to eyeball, this light is known as reflected light or brightness.Such as
General blank sheet of paper about absorbs the 20% of incident light quantity, reflection light quantity 80%；Black paper only reflects the 3% of incident light quantity, so in vain
Paper and black paper are widely different in brightness.
Wherein, according to the focusing main body with imaging the strong of the distance between head, light luminance to be supplemented and setting light
Degree, the light-emitting area for calculating screen include：
According to it is described focusing the distance between main body and camera, light luminance to be supplemented and setting light intensity, according to
Equation below calculates the light-emitting area of screen：
Wherein, S is the light-emitting area for the screen being calculated, and L is light luminance to be supplemented, and D is focusing main body and camera shooting
The distance between head, q are the preset parameters related with setting the intensity of light.When the maximum of the intensity as the screen that set light shines by force
When spending, q is the preset parameter related with screen luminescent properties.
Step 130, in the setting position of screen, the screen that the light-emitting area is lighted with the intensity for setting light carries out screen
Light filling.
After the light-emitting area of screen is calculated, the screen that the light-emitting area is lighted in the setting position of screen carries out
Screen light filling, the intensity of light filling are to set the intensity of light.When using screen light filling, the intensity of light filling is certain, then tie
The light-emitting area of screen is closed, the brightness of the light of needs can be rapidly achieved.
Wherein, in the setting position of screen, the screen that the light-emitting area is lighted with the intensity for setting light carries out screen benefit
Light preferably includes：
In the setting position of screen, the white for the intensity for setting light described in the screen display of the light-emitting area is controlled to carry out
Screen light filling.
Can be white by screen display, i.e., in the setting position light-emitting area of screen when using screen light filling
It is displayed in white to carry out screen light filling on screen, the intensity of the light of the white area of the screen display of the light-emitting area is setting light
Intensity so that focusing main body on light brightness be rapidly achieved needs light brightness.
The technical solution of the present embodiment, after acquisition focusing the distance between main body and camera, according to focusing main body
The distance between camera, light luminance to be supplemented and the intensity for setting light calculate the light-emitting area of screen, in setting for screen
Positioning puts to set the screen progress screen light filling that the intensity of light lights the light-emitting area, can be rapidly reached the light of needs
Brightness shortens the time of screen light filling, improves the efficiency of screen light filling so that user does not need to wait for longer time again
Satisfied photo can be photographed.
Based on the above technical solution, focusing the distance between main body and camera is obtained to preferably include：
Laser is emitted to focusing main body by laser beam emitting device and records launch time；
It receives the reflected light of focusing main body and records receiving time；
According to the spread speed of the launch time, receiving time and light, calculate between focusing main body and camera away from
From.
In addition to vacuum, luminous energy by substance be called (light) medium, the speed that light is propagated in the medium is less than in a vacuum
The speed of propagation, the speed of light in water are 2.25 × 10^8 metre per second (m/s)s, and the speed of light in glass is every for 2.0 × 10^8 meters
Second, speed of the light in ice is 2.30 × 10^8 metre per second (m/s)s, and the aerial speed of light is 3.0 × 10^8 metre per second (m/s)s, and light is in wine
Speed in essence is 2.2 × 10^8 metre per second (m/s)s.Since the spread speed of light in the medium is certain, with reference to transmitting laser
Launch time and receive the receiving time of reflected light, focusing the distance between main body and camera can be calculated.By
It is bigger in the spread speed of light, therefore, focusing the distance between main body and camera are calculated according to this method and do not need to be too long
Time.
Embodiment two
Fig. 2 is a kind of flow chart of the control method of screen light filling provided by Embodiment 2 of the present invention, and the present embodiment is in reality
On the basis of applying example one, the content for determining light luminance to be supplemented is increased, is specifically comprised the following steps：
Step 210, according to the bright-dark degree of the ambient light around camera, sequential adjustment aperture size, time for exposure
And sensitivity.
When being taken pictures using camera, when ambient enviroment Relationship Comparison is dark, phase chance adjusts aperture size, exposes in sequence
Between light time and the ISO of camera (International Standards Organization, International Standards Organization) sensitivity.When
When only adjusting aperture size can meet the requirements, time for exposure and ISO sensitivity just will not be adjusted again；When adjusting aperture size
When cannot meet the requirements, i.e., aperture size being adjusted to maximum cannot still meet the requirements, then adjusts the time for exposure again, by adjusting
Time for exposure disclosure satisfy that when requiring, and just will not adjust ISO sensitivity again；It cannot be met the requirements when adjusting aperture size, into one
When the successive step time for exposure cannot still meet the requirements, i.e., aperture size is adjusted to maximum, when the time for exposure is adjusted to maximum value,
It cannot still meet the requirements, then adjust ISO sensitivity again.The value of ISO sensitivity is bigger, illustrates that ambient enviroment light is darker.
Iso standard in digital camera is actually the standard appellation from film industry, in film industry standard,
ISO is to weigh standard of the film to light sensitive degree.
Step 220, when sensitivity is more than given threshold, according to aperture size, time for exposure and the sensitivity after adjusting,
Determine light luminance to be supplemented.
When sensitivity is more than given threshold, shows that focusing main body ambient enviroment light is darker, need to carry out screen benefit
Light can determine light luminance to be supplemented, specifically determining according to aperture size, time for exposure and the ISO sensitivity after adjusting
When light luminance is supplemented, which is inversely proportional with aperture size, directly proportional to the time for exposure, photosensitive with ISO
Degree is inversely proportional.Wherein, given threshold is determined by the attribute of photosensitive element, when in corresponding sensitivity, noise reaches certain
Value, can be set as given threshold by the value of the sensitivity.Here by adjusting aperture size, time for exposure and ISO sensitivity only
It is light luminance to be supplemented in order to obtain, when obtain can be by aperture, time for exposure and ISO sensitivity after light luminance is supplemented
Normal value is restored to, is taken pictures with the normal value of aperture, time for exposure and ISO sensitivity by screen light filling, this mistake
The ratio of Cheng Shixian is very fast, does not need to the too long of time, therefore will not lengthen the time of screen light filling, but can obtain calibrated
True light luminance to be supplemented.
Step 230, focusing the distance between main body and camera are obtained.
Step 240, according to the strong of focusing the distance between the main body and camera, light luminance to be supplemented and setting light
Degree calculates the light-emitting area of screen.
Step 250, in the setting position of screen, the screen that the light-emitting area is lighted with the intensity for setting light carries out screen
Light filling.
The technical solution of the present embodiment passes through the bright-dark degree according to the ambient light around camera, sequential adjustment light
Enclose size, time for exposure and sensitivity, when sensitivity is more than given threshold, according to after adjusting aperture size, the time for exposure
And sensitivity determines light luminance to be supplemented, after obtaining focusing the distance between main body and camera, according to focusing main body with taking the photograph
As the distance between head, light luminance to be supplemented and the intensity for setting light, the light-emitting area of screen is calculated, in the setting position of screen
It puts to set the screen progress screen light filling that the intensity of light lights the light-emitting area, the light that can be rapidly reached needs is bright
Degree shortens the time of screen light filling, improves the efficiency of screen light filling so that user does not need to wait for longer time again i.e.
Satisfied photo can be photographed, compared with embodiment one, determining light brightness ratio to be supplemented is more accurate so that the photo photographed
Better quality.
Embodiment three
Fig. 3 is a kind of structure diagram of the control device for screen light filling that the embodiment of the present invention three provides, such as Fig. 3 institutes
Show, the control device of the screen light filling described in the present embodiment includes：Apart from acquisition module 310,320 and of light-emitting area computing module
Screen supplementary lighting module 330.
Wherein, apart from acquisition module 310 for acquisition focusing the distance between main body and camera；
Light-emitting area computing module 320 is used for according to focusing the distance between the main body and camera, light to be supplemented
Brightness and the intensity for setting light calculate the light-emitting area of screen；
Screen supplementary lighting module 330 is used to, in the setting position of screen, the light-emitting area is lighted with the intensity for setting light
Screen carries out screen light filling.
Preferably, the light-emitting area computing module 320 is specifically used for：
According to it is described focusing the distance between main body and camera, light luminance to be supplemented and setting light intensity, according to
Equation below calculates the light-emitting area of screen：
Wherein, S is the light-emitting area for the screen being calculated, and L is light luminance to be supplemented, and D is focusing main body and camera shooting
The distance between head, q are the preset parameters related with setting the intensity of light.
Preferably, the control device of the screen light filling further includes：
Adjustment module, before the distance between acquisition focusing main body and camera, according to the ring around camera
The bright-dark degree of border light, sequential adjustment aperture size, time for exposure and sensitivity；
Light luminance determining module to be supplemented, for when sensitivity be more than given threshold when, it is big according to the aperture after adjusting
Small, time for exposure and sensitivity determine light luminance to be supplemented.
Preferably, the screen supplementary lighting module 330 is specifically used for：
In the setting position of screen, the white for the intensity for setting light described in the screen display of the light-emitting area is controlled to carry out
Screen light filling.
Preferably, it is described to include apart from acquisition module 310：
Launch time recording unit, for passing through laser beam emitting device to focusing main body transmitting laser and when recording transmitting
Between；
Receiving time recording unit, for receiving the reflected light of focusing main body and recording receiving time；
Metrics calculation unit for the spread speed according to the launch time, receiving time and light, calculates focusing main body
The distance between camera.
Preferably, the intensity of the setting light refers to the maximum emission intensity of screen.
The said goods can perform the method that any embodiment of the present invention is provided, and have the corresponding function module of execution method
And advantageous effect.
Note that it above are only presently preferred embodiments of the present invention and institute's application technology principle.It will be appreciated by those skilled in the art that
The present invention is not limited to specific embodiment described here, can carry out for a person skilled in the art various apparent variations,
It readjusts and substitutes without departing from protection scope of the present invention.Therefore, although being carried out by above example to the present invention
It is described in further detail, but the present invention is not limited only to above example, without departing from the inventive concept, also
It can include other more equivalent embodiments, and the scope of the present invention is determined by scope of the appended claims.
Claims (10)
1. a kind of control method of screen light filling, which is characterized in that the method includes：
Obtain focusing the distance between main body and camera；
According to focusing the distance between the main body and camera, light luminance to be supplemented and the intensity for setting light, screen is calculated
Light-emitting area, wherein, the intensity of the setting light refers to the maximum emission intensity of screen；
In the setting position of screen, the screen that the light-emitting area is lighted with the intensity for setting light carries out screen light filling.
2. according to the method described in claim 1, it is characterized in that, according to it is described focusing main body and image head between away from
From, light luminance to be supplemented and the intensity of light is set, the light-emitting area for calculating screen includes：
According to focusing the distance between the main body and camera, light luminance to be supplemented and the intensity for setting light, according to as follows
Formula calculates the light-emitting area of screen：
Wherein, S is the light-emitting area for the screen being calculated, and L is light luminance to be supplemented, D be focusing main body and camera it
Between distance, q is the related preset parameter of intensity with setting light.
3. according to the method described in claim 1, it is characterized in that, obtain focusing main body and camera between distance it
Before, it further includes：
According to the bright-dark degree of the ambient light around camera, sequential adjustment aperture size, time for exposure and sensitivity；
When sensitivity is more than given threshold, according to aperture size, time for exposure and the sensitivity after adjusting, determine to treat supplement light
Line brightness.
4. according to the method described in claim 1, it is characterized in that, in the setting position of screen, lighted with the intensity for setting light
The screen of the light-emitting area carries out screen light filling and includes：
In the setting position of screen, the white for the intensity for setting light described in the screen display of the light-emitting area is controlled to carry out screen
Light filling.
5. according to the method described in claim 1, include it is characterized in that, obtaining focusing the distance between main body and camera：
Laser is emitted to focusing main body by laser beam emitting device and records launch time；
It receives the reflected light of focusing main body and records receiving time；
According to the spread speed of the launch time, receiving time and light, focusing the distance between main body and camera are calculated.
6. a kind of control device of screen light filling, which is characterized in that described device includes：
Apart from acquisition module, for obtaining focus the distance between main body and camera；
Light-emitting area computing module, for according to it is described focusing the distance between main body and camera, light luminance to be supplemented and
The intensity of light is set, calculates the light-emitting area of screen, wherein, the intensity of the setting light refers to the maximum emission intensity of screen；
Screen supplementary lighting module, in the setting position of screen, with the intensity for setting light light the screen of the light-emitting area into
Row screen light filling.
7. device according to claim 6, which is characterized in that the light-emitting area computing module is specifically used for：
According to focusing the distance between the main body and camera, light luminance to be supplemented and the intensity for setting light, according to as follows
Formula calculates the light-emitting area of screen：
Wherein, S is the light-emitting area for the screen being calculated, and L is light luminance to be supplemented, D be focusing main body and camera it
Between distance, q is the related preset parameter of intensity with setting light.
8. device according to claim 6, which is characterized in that further include：
Adjustment module, before the distance between acquisition focusing main body and camera, according to the ambient light around camera
The bright-dark degree of line, sequential adjustment aperture size, time for exposure and sensitivity；
Light luminance determining module to be supplemented, for when sensitivity be more than given threshold when, according to after adjusting aperture size, expose
Between light time and sensitivity, light luminance to be supplemented is determined.
9. device according to claim 6, which is characterized in that the screen supplementary lighting module is specifically used for：
In the setting position of screen, the white for the intensity for setting light described in the screen display of the light-emitting area is controlled to carry out screen
Light filling.
10. device according to claim 6, which is characterized in that described to include apart from acquisition module：
Launch time recording unit, for passing through laser beam emitting device to focusing main body transmitting laser and recording launch time；
Receiving time recording unit, for receiving the reflected light of focusing main body and recording receiving time；
Metrics calculation unit for the spread speed according to the launch time, receiving time and light, calculates focusing main body with taking the photograph
As the distance between head.
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| CN105915814B (en) * | 2016-05-17 | 2019-08-20 | 惠州Tcl移动通信有限公司 | A kind of method and system of controlling terminal screen light filling |
| CN106303278B (en) * | 2016-08-29 | 2019-02-05 | Oppo广东移动通信有限公司 | Adjust the method, apparatus and photographic device of preposition photographic device user interface |
| CN106791466A (en) * | 2016-12-20 | 2017-05-31 | 贵州财富之舟科技有限公司 | Shoot light compensation method and device |
| CN106791426A (en) * | 2017-01-09 | 2017-05-31 | 深圳市金立通信设备有限公司 | Method and terminal that a kind of use light compensating lamp is taken pictures |
| CN112995492B (en) * | 2019-12-16 | 2022-12-13 | 西安诺瓦星云科技股份有限公司 | Parameter adjusting method and device, image acquisition system and computer readable storage medium |
| CN111953899B (en) * | 2020-08-04 | 2021-12-17 | 深圳市锐尔觅移动通信有限公司 | Image generation method, image generation device, storage medium, and electronic apparatus |
| CN114827446A (en) * | 2021-01-29 | 2022-07-29 | 北京小米移动软件有限公司 | Shooting method and device, terminal equipment and storage medium |
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