CN105635789A - Video image OSD brightness reducing method and device - Google Patents
Video image OSD brightness reducing method and device Download PDFInfo
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- CN105635789A CN105635789A CN201511017279.5A CN201511017279A CN105635789A CN 105635789 A CN105635789 A CN 105635789A CN 201511017279 A CN201511017279 A CN 201511017279A CN 105635789 A CN105635789 A CN 105635789A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
- H04N21/431—Generation of visual interfaces for content selection or interaction; Content or additional data rendering
- H04N21/4312—Generation of visual interfaces for content selection or interaction; Content or additional data rendering involving specific graphical features, e.g. screen layout, special fonts or colors, blinking icons, highlights or animations
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/47—End-user applications
- H04N21/485—End-user interface for client configuration
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/47—End-user applications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/47—End-user applications
- H04N21/485—End-user interface for client configuration
- H04N21/4854—End-user interface for client configuration for modifying image parameters, e.g. image brightness, contrast
Abstract
The invention discloses a video image OSD brightness reducing method. The video image OSD brightness reducing method comprises the steps that existence of an image frame including OSD in a video signal is judged; when the image frame including the OSD exists in the video signal, the position and the brightness value corresponding to the OSD in the image frame are determined; and display brightness of the OSD in the image frame in redisplaying of the video signal is reduced according to the position and the brightness value corresponding to the OSD in the image frame. The invention also discloses a video image OSD brightness reducing device. According to the video image OSD brightness reducing method and device, display brightness of the OSD can be reduced under the premise of maintaining display brightness of images apart from the OSD in the video signal to be unchanged so that visual comfort of a user in watching a video program including the OSD can be ensured and the visual experience effect of the user can be enhanced.
Description
Technical field
The present invention relates to communication technique field, particularly relate to a kind of method and the device that reduce OSD brightness in video image.
Background technology
During blue-ray DVD film or other Television programme of being televised by TFTLCD, OSD (on-screendisplay) dialogue usually having black matrix wrongly written or mispronounced character occurs. The high-high brightness of the general corresponding screen of the peak value brightness of the OSD of this kind of black matrix wrongly written or mispronounced character.
It is usually higher that high dynamic range encloses (HDR) televisor or indicating meter screen brightness, and complete white field high-high brightness generally reaches 700-800nit, and peak value brightness can reach more than 1000nit. Vision signal occurs that the scene that brightness peak is white generally comprises two kinds, and one comprises OSD in vision signal, and another kind comprises the image such as starlight, light in vision signal. Wherein because occurring that the number of times that brightness peak is white is less, the peak white residence time is shorter containing the image such as starlight, light in vision signal, people's eye can not be produced detrimentally affect. But if vision signal comprises OSD, then the brightness peak white residence time occurred because of OSD in representation video process is longer, and the sensation that this kind of white OSD of brightness peak stopped for a long time can give people dazzling, dazzling, long-time viewing easily causes eyestrain.
The mode generally reducing video image brightness by regulating for the problems referred to above prior art realizes reducing OSD brightness, although this kind of mode reaches the object reducing OSD brightness, but owing to entire image brightness all reduces, cause picture contrast to reduce, the visual experience deleterious of user; Namely prior art cannot realize keeping in vision signal reducing the display brightness of OSD, it is ensured that user watches visual comfort under the prerequisite that the image display brightness beyond OSD is constant.
Summary of the invention
The main purpose of the present invention is to solve prior art and cannot realize keeping in vision signal under the prerequisite that the image display brightness beyond OSD is constant, reduce the display brightness of OSD, it is ensured that the technical problem of visual comfort when user's viewing contains the video frequency program of OSD.
For achieving the above object, a kind of method reducing OSD brightness in video image provided by the invention, in described reduction video image, the method for OSD brightness comprises:
Judge the image frame whether existed in vision signal containing OSD;
When described vision signal exists containing the image frame of OSD, then determine position that in described image frame, OSD is corresponding and brightness value; And
The position corresponding according to OSD in described image frame and brightness value, the display brightness of OSD in described image frame when reducing described video signal reproducing.
Preferably, the described position corresponding according to OSD in described image frame and brightness value, during to reduce described video signal reproducing, in described image frame, the display brightness of OSD specifically comprises:
Before described video signal reproducing, the position corresponding according to OSD in described image frame, determine each pixel that in described image frame, OSD is corresponding, reduce the brightness value of each pixel described, it is achieved the display brightness of OSD in described image frame when reducing described video signal reproducing.
Preferably, the described position corresponding according to OSD in described image frame and brightness value, the display brightness reducing OSD during described image frame representation specifically comprises:
Position according to OSD in described image frame, it is determined that the correspondence position of OSD in display backlight module in described image frame;
Brightness value according to OSD in described image frame, it is determined that the LED-backlit brightness value of correspondence position described in display backlight module;
Described in representation during vision signal, according to described LED-backlit brightness value, adjusting the LED-backlit brightness with described OSD correspondence position in described display backlight module, it is achieved the display brightness of OSD in described image frame when reducing described video signal reproducing.
Preferably, described judge that the image frame whether existed in vision signal containing OSD specifically comprises:
Judge whether vision signal exists image content, image brightness values all identical, the multiframe image that representation time sequence is connected;
If existing, then determine that the multiframe image that described image content, image brightness values are all identical is the image frame containing OSD.
Preferably, described determine that position that in described image frame, OSD is corresponding and brightness value specifically comprise:
Calculate the brightness value of each pixel in image frame described in every frame; The brightness value of the brightness value of each pixel and adjacent image frame correspondence position pixel is compared;
Determine that the pixel that brightness value difference equals zero is OSD corresponding pixel points;
Obtain coordinate figure and the brightness value of each OSD corresponding pixel points in image frame described in every frame;
Position that in image frame described in every frame, OSD is corresponding and brightness value is determined according to described coordinate figure and brightness value.
For achieving the above object, the present invention also provides a kind of device reducing OSD brightness in video image, and in described reduction video image, the device of OSD brightness comprises:
Judge module, for judging the image frame whether existed in vision signal containing OSD;
Determination module, for when existing containing the image frame of OSD in described vision signal, then determines position that in described image frame, OSD is corresponding and brightness value;
Brilliance control module, for the position corresponding according to OSD in described image frame and brightness value, the display brightness of OSD in described image frame when reducing described video signal reproducing.
Preferably, described brilliance control module comprises:
Brilliance control unit, for position corresponding according to OSD in described image frame before described video signal reproducing, determine each pixel that in described image frame, OSD is corresponding, reduce the brightness value of each pixel described, it is achieved the display brightness of OSD in described image frame when reducing described video signal reproducing.
Preferably, described brilliance control module comprises:
First brilliance control unit, for the position according to OSD in described image frame, it is determined that the correspondence position of OSD in display backlight module in described image frame; Brightness value according to OSD in described image frame, it is determined that the LED-backlit brightness value of correspondence position described in display backlight module; Described in representation during vision signal, according to described LED-backlit brightness value, adjusting the LED-backlit brightness with described OSD correspondence position in described display backlight module, it is achieved the display brightness of OSD in described image frame when reducing described video signal reproducing.
Preferably, described judgement module, all identical specifically for judging whether vision signal exists image content, image brightness values, the multiframe image that representation time sequence is connected; If existing, then determine that the multiframe image that described image content, image brightness values are all identical is the image frame containing OSD.
Preferably, described determination module, specifically for calculating the brightness value of each pixel in image frame described in every frame; The brightness value of the brightness value of each pixel and adjacent image frame correspondence position pixel is compared; Determine that the pixel that brightness value difference equals zero is OSD corresponding pixel points; Obtain coordinate figure and the brightness value of each OSD corresponding pixel points in image frame described in every frame; Position that in image frame described in every frame, OSD is corresponding and brightness value is determined according to described coordinate figure and brightness value.
The method of OSD brightness in reduction video image provided by the present invention and device, by judging the image frame whether existed in vision signal containing OSD; When described vision signal exists containing the image frame of OSD, then determine position that in described image frame, OSD is corresponding and brightness value; The position corresponding according to OSD in described image frame and brightness value, the mode of the display brightness of OSD in described image frame when reducing described video signal reproducing, can realize keeping in vision signal under the prerequisite that the image display brightness beyond OSD is constant, reduce the display brightness of OSD, visual comfort when ensure that user watches the video frequency program containing OSD, improves user's visual experience effect.
Accompanying drawing explanation
Fig. 1 be the present invention reduction video image in the schematic flow sheet of method one embodiment of OSD brightness;
Fig. 2 is that in Fig. 1, step S30, according to position corresponding to OSD in described image frame and brightness value, reduces the concrete refinement schematic flow sheet of display brightness of OSD during described image frame representation;
Fig. 3 be the present invention reduction video image in the high-level schematic functional block diagram of device one embodiment of OSD brightness;
Fig. 4 is the concrete refinement high-level schematic functional block diagram of brilliance control module in Fig. 3;
Fig. 5 is another concrete refinement high-level schematic functional block diagram of brilliance control module in Fig. 3;
Fig. 6 is a concrete refinement high-level schematic functional block diagram again of brilliance control module in Fig. 3.
The realization of the object of the invention, functional characteristics and advantage will in conjunction with the embodiments, are described further with reference to accompanying drawing.
Embodiment
Below in conjunction with Figure of description, the preferred embodiments of the present invention are described, it is to be understood that, preferred embodiment described herein is only for instruction and explanation of the present invention, it is not intended to limit the present invention, and when not conflicting, the embodiment in the present invention and the feature in embodiment can combine mutually.
The present invention provides a kind of method reducing OSD brightness in video image. It it is the schematic flow sheet of method one embodiment of OSD brightness in the reduction video image of the present invention with reference to Fig. 1, Fig. 1. In the present embodiment, in described reduction video image, the method for OSD brightness comprises:
Step S10, judge the image frame that whether exists in vision signal containing OSD.
This step S10 specifically processes as follows: judge whether there is the multiframe image that image content, image brightness values are all identical, representation time sequence is connected in vision signal; If existing, then determine that the multiframe image that described image content, image brightness values are all identical is the image frame containing OSD.
Generally, if a certain vision signal contains OSD, then containing, in the multiframe image of this OSD, the image content of OSD present position, brightness value are all consistent; And this multiframe image is that order is connected on the representation time. Therefore the present embodiment is by calculating the luminance difference of respective pixel point in adjacent image frame, if in adjacent multiframe image frame, the pixel luminance difference of corresponding position is always zero successively, then can judge that this adjacent multiframe image frame is all containing OSD, namely containing OSD content in vision signal. Wherein said multiframe image may be a few two field picture or tens two field pictures, even tens of two field picture.
Step S20, when described vision signal exists containing the image frame of OSD, then determine position that in described image frame, OSD is corresponding and brightness value.
This step S20 specifically comprises following process: the brightness value calculating each pixel in image frame described in every frame; The brightness value of the brightness value of each pixel and adjacent image frame correspondence position pixel is compared; Determine that the pixel that brightness value difference equals zero is OSD corresponding pixel points; Obtain coordinate figure and the brightness value of each OSD corresponding pixel points in image frame described in every frame; Position that in image frame described in every frame, OSD is corresponding and brightness value is determined according to described coordinate figure and brightness value.
Step S30, according to position corresponding to OSD in described image frame and brightness value, the display brightness of OSD in described image frame when reducing described video signal reproducing.
Step S30 described in the present invention comprises following two kinds of processing modes:
The first processing mode: before described video signal reproducing, the position corresponding according to OSD in described image frame, determine each pixel that in described image frame, OSD is corresponding, reduce the brightness value of each pixel described, it is achieved the display brightness of OSD in described image frame when reducing described video signal reproducing.
For the first processing mode, it is previously provided with OSD luminance threshold; The brightness value of described each pixel of reduction is specially: by the luminance-value reduction of each pixel to equal with described OSD luminance threshold. Described default OSD luminance threshold can be arranged according to the actual needs of user, is as the criterion so that after image frame representation, human eye perceives is comfortable.
2nd kind of processing mode: be the concrete refinement schematic flow sheet of step S30 in Fig. 1 see Fig. 2, Fig. 2. Described step S30 specifically comprises:
Step S31, position according to OSD in described image frame, it is determined that the correspondence position of OSD in display backlight module in described image frame.
Step S32, brightness value according to OSD in described image frame, it is determined that the LED-backlit brightness value of correspondence position described in display backlight module.
Generally, when in image frame, the brightness value of OSD is excessive, described in representation during vision signal, if reducing the LED-backlit brightness value of display backlight module with OSD correspondence position in respective image frame, it is possible to the display brightness of OSD in reduction respective image frame. In this step S32, the LED-backlit brightness value of correspondence position described in display backlight module needs to determine according to the brightness value of OSD in image frame. Generally, OSD brightness value is more big, then in display backlight module, the LED-backlit of correspondence position needs the brightness value reduced more big, and vice versa.
Step S33, described in representation during vision signal, according to described LED-backlit brightness value, adjust the LED-backlit brightness with described OSD correspondence position in described display backlight module, it is achieved the display brightness of OSD in described image frame when reducing described video signal reproducing.
The method with the LED-backlit brightness of described OSD correspondence position that wherein adjusts in display backlight module is: reduces the size of the driving electric current of described LED or changes the dutycycle driving electric current.
Step S30 described in the present invention can adopt first kind of way or the 2nd kind of mode, it is possible in two ways and use.
OSD described in above embodiment comprises: OSD character and OSD figure.
The method of OSD brightness in the reduction video image that above embodiment provides, by judging the image frame whether existed in vision signal containing OSD; When described vision signal exists containing the image frame of OSD, then determine position that in described image frame, OSD is corresponding and brightness value; The position corresponding according to OSD in described image frame and brightness value, the mode of the display brightness of OSD in described image frame when reducing described video signal reproducing, can realize keeping in vision signal under the prerequisite that the image display brightness beyond OSD is constant, reduce the display brightness of OSD, visual comfort when ensure that user watches the video frequency program containing OSD, improves user's visual experience effect.
The present invention further provides a kind of device reducing OSD brightness in video image. It it is the high-level schematic functional block diagram of device one embodiment of OSD brightness in the reduction video image of the present invention with reference to Fig. 3, Fig. 3. In the present embodiment, in this reduction video image, the device 100 of OSD brightness comprises: judge module 110, determination module 120, brilliance control module 130. Wherein,
Judge module 110, for judging the image frame whether existed in vision signal containing OSD;
Determination module 120, for when existing containing the image frame of OSD in described vision signal, then determines position that in described image frame, OSD is corresponding and brightness value;
Brilliance control module 130, for the position corresponding according to OSD in described image frame and brightness value, the display brightness of OSD in described image frame when reducing described video signal reproducing.
In above-described embodiment, judge module 110, all identical specifically for judging whether vision signal exists image content, image brightness values, the multiframe image that representation time sequence is connected; If existing, then determine that the multiframe image that described image content, image brightness values are all identical is the image frame containing OSD.
Generally, if a certain vision signal contains OSD, then containing, in the multiframe image of this OSD, the image content of OSD position, brightness value are consistent; And this multiframe image is that order is connected on the representation time. Therefore the present embodiment is by calculating the luminance difference of respective pixel point in adjacent image frame, if in adjacent multiframe image frame, the pixel luminance difference of corresponding position is always zero successively, then can judge that this adjacent multiframe image frame is all containing OSD, namely containing OSD content in vision signal. Wherein said multiframe image may be a few two field picture or tens two field pictures, even tens of two field picture.
In above-described embodiment, it is determined that module 120, specifically for calculating the brightness value of each pixel in image frame described in every frame; The brightness value of the brightness value of each pixel and adjacent image frame correspondence position pixel is compared; Determine that the pixel that brightness value difference equals zero is OSD corresponding pixel points; Obtain coordinate figure and the brightness value of each OSD corresponding pixel points in image frame described in every frame; Position that in image frame described in every frame, OSD is corresponding and brightness value is determined according to described coordinate figure and brightness value.
See the concrete refinement high-level schematic functional block diagram that Fig. 4, Fig. 4 are brilliance control module 130 in Fig. 3. The module of brilliance control described in above-described embodiment 130 comprises brilliance control unit 131, described brilliance control unit 131, position corresponding according to OSD in described image frame before described video signal reproducing, determine each pixel that in described image frame, OSD is corresponding, reduce the brightness value of each pixel described, it is achieved the display brightness of OSD in described image frame when reducing described video signal reproducing.
The present embodiment is previously provided with OSD luminance threshold; The brightness value that described brilliance control unit 131 reduces each pixel is specially: by the luminance-value reduction of each pixel to equal with described OSD luminance threshold. Described default OSD luminance threshold can be arranged according to the actual needs of user, is as the criterion so that after image frame representation, human eye perceives is comfortable.
Another embodiment of the present invention proposes another device reducing OSD brightness in video image, and this embodiment has adjusted on the basis of above-described embodiment, is another concrete refinement high-level schematic functional block diagram of brilliance control module in Fig. 3 see Fig. 5, Fig. 5. Adjustment part is: described brilliance control module 130 comprises the first brilliance control unit 132. Namely described first brilliance control unit 132 replaces described brilliance control unit 131.
Described first brilliance control unit 32, for the position according to OSD in described image frame, it is determined that the correspondence position of OSD in display backlight module in described image frame; Brightness value according to OSD in described image frame, it is determined that the LED-backlit brightness value of correspondence position described in display backlight module; Described in representation during vision signal, according to described LED-backlit brightness value, adjusting the LED-backlit brightness with described OSD correspondence position in described display backlight module, it is achieved the display brightness of OSD in described image frame when reducing described video signal reproducing.
Generally, when in image frame, the brightness value of OSD is excessive, described in representation during vision signal, if reducing the LED-backlit brightness of display backlight module with OSD correspondence position in respective image frame, it is possible to the display brightness of OSD in reduction respective image frame. In the present embodiment, the LED-backlit brightness value of correspondence position described in display backlight module needs to determine according to the brightness value of OSD in image frame. Generally, OSD brightness value is more big, then in display backlight module, the LED-backlit of correspondence position needs the brightness value reduced more big, and vice versa.
First brilliance control unit 32 described in the present embodiment adjusts in display backlight module the method for the LED-backlit brightness with described OSD dialogue correspondence position: reduces the size of the driving electric current of described LED or changes the dutycycle driving electric current.
Another embodiment of the present invention provides and the device of OSD brightness in a reduction video image, and this embodiment has adjusted on the basis of above-described embodiment, is a concrete refinement high-level schematic functional block diagram again of brilliance control module in Fig. 3 see Fig. 6, Fig. 6. Adjustment part is: in the present embodiment, described brilliance control module 130 comprises: brilliance control unit 131 and the first brilliance control unit 132. Wherein brilliance control unit 131, the first brilliance control unit 132 of the present embodiment is respectively the brilliance control unit 131 described in above-described embodiment and the first brilliance control unit 132, no longer it is described in detail at this.
OSD described in each embodiment comprises above: OSD character and OSD figure.
The device 100 of OSD brightness in the reduction video image that each embodiment provides above, by judging the image frame whether existed in vision signal containing OSD; When described vision signal exists containing the image frame of OSD, then determine position that in described image frame, OSD is corresponding and brightness value; The position corresponding according to OSD in described image frame and brightness value, the mode of the display brightness of OSD in described image frame when reducing described video signal reproducing, can realize keeping in vision signal under the prerequisite that the image display brightness beyond OSD is constant, reduce the display brightness of OSD, visual comfort when ensure that user watches the video frequency program containing OSD, improves user's visual experience effect.
These are only the preferred embodiments of the present invention; not thereby the patent scope of the present invention is limited; every utilize specification sheets of the present invention and accompanying drawing content to do equivalent structure or equivalence flow process conversion; or directly or indirectly it is used in other relevant technical fields, all it is included in the scope of patent protection of the present invention with reason.
Claims (10)
1. one kind is reduced the method for OSD brightness in video image, it is characterised in that, in described reduction video image, the method for OSD brightness comprises:
Judge the image frame whether existed in vision signal containing OSD;
When described vision signal exists containing the image frame of OSD, then determine position that in described image frame, OSD is corresponding and brightness value; And
The position corresponding according to OSD in described image frame and brightness value, the display brightness of OSD in described image frame when reducing described video signal reproducing.
2. the method for OSD brightness in reduction video image according to claim 1, it is characterized in that, the described position corresponding according to OSD in described image frame and brightness value, during to reduce described video signal reproducing, in described image frame, the display brightness of OSD specifically comprises:
Before described video signal reproducing, the position corresponding according to OSD in described image frame, determine each pixel that in described image frame, OSD is corresponding, reduce the brightness value of each pixel described, it is achieved the display brightness of OSD in described image frame when reducing described video signal reproducing.
3. the method for OSD brightness in reduction video image according to claim 1, it is characterised in that, the described position corresponding according to OSD in described image frame and brightness value, the display brightness reducing OSD during described image frame representation specifically comprises:
Position according to OSD in described image frame, it is determined that the correspondence position of OSD in display backlight module in described image frame;
Brightness value according to OSD in described image frame, it is determined that the LED-backlit brightness value of correspondence position described in display backlight module;
Described in representation during vision signal, according to described LED-backlit brightness value, adjusting the LED-backlit brightness with described OSD correspondence position in described display backlight module, it is achieved the display brightness of OSD in described image frame when reducing described video signal reproducing.
4. the method for OSD brightness in reduction video image according to the arbitrary item of claims 1 to 3, it is characterised in that, described judge that the image frame whether existed in vision signal containing OSD specifically comprises:
Judge whether vision signal exists image content, image brightness values all identical, the multiframe image that representation time sequence is connected;
If existing, then determine that the multiframe image that described image content, image brightness values are all identical is the image frame containing OSD.
5. the method for OSD brightness in reduction video image according to the arbitrary item of claims 1 to 3, it is characterised in that, described determine that position that in described image frame, OSD is corresponding and brightness value specifically comprise:
Calculate the brightness value of each pixel in image frame described in every frame; The brightness value of the brightness value of each pixel and adjacent image frame correspondence position pixel is compared;
Determine that the pixel that brightness value difference equals zero is OSD corresponding pixel points;
Obtain coordinate figure and the brightness value of each OSD corresponding pixel points in image frame described in every frame;
Position that in image frame described in every frame, OSD is corresponding and brightness value is determined according to described coordinate figure and brightness value.
6. one kind is reduced the device of OSD brightness in video image, it is characterised in that, in described reduction video image, the device of OSD brightness comprises:
Judge module, for judging the image frame whether existed in vision signal containing OSD;
Determination module, for when existing containing the image frame of OSD in described vision signal, then determines position that in described image frame, OSD is corresponding and brightness value;
Brilliance control module, for the position corresponding according to OSD in described image frame and brightness value, the display brightness of OSD in described image frame when reducing described video signal reproducing.
7. the device of OSD brightness in reduction video image according to claim 6, it is characterised in that, described brilliance control module comprises:
Brilliance control unit, for position corresponding according to OSD in described image frame before described video signal reproducing, determine each pixel that in described image frame, OSD is corresponding, reduce the brightness value of each pixel described, it is achieved the display brightness of OSD in described image frame when reducing described video signal reproducing.
8. the device of OSD brightness in reduction video image according to claim 6, it is characterised in that, described brilliance control module comprises:
First brilliance control unit, for the position according to OSD in described image frame, it is determined that the correspondence position of OSD in display backlight module in described image frame; Brightness value according to OSD in described image frame, it is determined that the LED-backlit brightness value of correspondence position described in display backlight module; Described in representation during vision signal, according to described LED-backlit brightness value, adjusting the LED-backlit brightness with described OSD correspondence position in described display backlight module, it is achieved the display brightness of OSD in described image frame when reducing described video signal reproducing.
9. the device of OSD brightness in reduction video image according to the arbitrary item of claim 6 to 8, it is characterised in that,
Described judgement module, all identical specifically for judging whether vision signal exists image content, image brightness values, the multiframe image that representation time sequence is connected; If existing, then determine that the multiframe image that described image content, image brightness values are all identical is the image frame containing OSD.
10. the device of OSD brightness in reduction video image according to the arbitrary item of claim 6 to 8, it is characterised in that,
Described determination module, specifically for calculating the brightness value of each pixel in image frame described in every frame; The brightness value of the brightness value of each pixel and adjacent image frame correspondence position pixel is compared; Determine that the pixel that brightness value difference equals zero is OSD corresponding pixel points; Obtain coordinate figure and the brightness value of each OSD corresponding pixel points in image frame described in every frame; Position that in image frame described in every frame, OSD is corresponding and brightness value is determined according to described coordinate figure and brightness value.
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| CN201511017279.5A CN105635789B (en) | 2015-12-29 | 2015-12-29 | The method and apparatus for reducing OSD brightness in video image |
| PCT/CN2016/084198 WO2017113585A1 (en) | 2015-12-29 | 2016-05-31 | Method and device for reducing on-screen display (osd) brightness in video image |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106297732A (en) * | 2016-09-28 | 2017-01-04 | 深圳Tcl数字技术有限公司 | Display backlight brightness adjusting method and device |
| CN106851147A (en) * | 2017-02-15 | 2017-06-13 | 上海顺久电子科技有限公司 | The method and device in OSD menu region is determined in the terminal for playing external video |
| CN106851147B (en) * | 2017-02-15 | 2019-09-20 | 上海顺久电子科技有限公司 | The method and device in OSD menu region is determined in the terminal for playing external video |
| CN107450814A (en) * | 2017-07-07 | 2017-12-08 | 深圳Tcl数字技术有限公司 | Menu automatic brightness adjustment method, user equipment and storage medium |
| CN107450814B (en) * | 2017-07-07 | 2021-09-28 | 深圳Tcl数字技术有限公司 | Menu brightness automatic adjusting method, user equipment and storage medium |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2017113585A1 (en) | 2017-07-06 |
| CN105635789B (en) | 2018-09-25 |
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