WO2018068404A1 - 电视色偏调整方法及装置 - Google Patents

电视色偏调整方法及装置 Download PDF

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Publication number
WO2018068404A1
WO2018068404A1 PCT/CN2016/112466 CN2016112466W WO2018068404A1 WO 2018068404 A1 WO2018068404 A1 WO 2018068404A1 CN 2016112466 W CN2016112466 W CN 2016112466W WO 2018068404 A1 WO2018068404 A1 WO 2018068404A1
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WIPO (PCT)
Prior art keywords
light
area
television
blue light
television display
Prior art date
Application number
PCT/CN2016/112466
Other languages
English (en)
French (fr)
Inventor
刘树标
林健源
季洪雷
张冬灿
杨二超
黄坚顺
罗崇辉
Original Assignee
深圳Tcl新技术有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 深圳Tcl新技术有限公司 filed Critical 深圳Tcl新技术有限公司
Priority to US16/342,156 priority Critical patent/US10616659B2/en
Priority to PL16918933T priority patent/PL3528494T3/pl
Priority to EP16918933.9A priority patent/EP3528494B1/en
Publication of WO2018068404A1 publication Critical patent/WO2018068404A1/zh

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Classifications

    • 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
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
    • G09G3/34—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source
    • G09G3/3406—Control of illumination source
    • G09G3/3413—Details of control of colour illumination sources
    • 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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N9/00—Details of colour television systems
    • H04N9/64—Circuits for processing colour signals
    • H04N9/73—Colour balance circuits, e.g. white balance circuits or colour temperature control
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2320/00—Control of display operating conditions
    • G09G2320/02—Improving the quality of display appearance
    • G09G2320/0242—Compensation of deficiencies in the appearance of colours

Definitions

  • the present invention relates to the field of television display technologies, and in particular, to a television color shift adjustment method and apparatus.
  • the glass light guide plate has a large difference in refractive index of light of different colors, resulting in a display screen close to the light bar.
  • the side of the strip) is bluish, and the side away from the light bar is reddish, which affects the viewing effect of the TV.
  • the main object of the present invention is to provide a method and device for adjusting the color shift of a television, which aims to solve the technical problem that the color shift of the television display screen is caused by the use of the glass light guide plate, which affects the viewing effect of the television.
  • the present invention provides a television color shift adjustment method, including:
  • the initial image in the area is adjusted according to the adjustment coefficient of red light and blue light in the area, and the adjusted image in each area is displayed on the television display screen.
  • the dividing the television display screen into multiple areas according to a preset manner includes:
  • the television display screen is divided into N areas in a direction parallel to the television display light bar, and the N is a positive integer.
  • the determining an adjustment coefficient of red light and blue light in the area according to a position of the area relative to a television display light bar comprises:
  • the adjusting coefficients of red light and blue light in the region are respectively determined according to a position of the region relative to a position of the television display light bar and a gain compensation coefficient of red light and blue light in the region:
  • k R represents the total number of reflections required for red light to pass through the television glass light guide
  • k B represents the total number of reflections required for the blue light to pass through the television glass light guide
  • a represents the preset color gain value in each region
  • b Represents the gain compensation coefficient of red light in the nth region relative to the television display light bar
  • c represents the gain compensation coefficient of blue light in the nth region relative to the television display light bar
  • N represents the area divided by the television display screen Number
  • the n is a positive integer and n ⁇ N.
  • the adjusting the initial image in the area according to an adjustment coefficient of red light and blue light in the area comprises:
  • a R (n) B R (n)*[1+C R (n)];
  • a B (n) B B (n)*[1+C B (n)];
  • the present invention further provides a television color shift adjustment device, the device comprising:
  • a dividing module configured to divide the television display screen into multiple areas according to a preset manner
  • a determining module configured to determine an adjustment coefficient of red light and blue light in the area according to a position of the area relative to a television display light bar;
  • the adjustment module is configured to adjust an initial image in the area according to an adjustment coefficient of red light and blue light in the area, and display the adjusted image in each area on a television display screen.
  • the dividing module is specifically configured to:
  • N is a positive integer.
  • the determining module specifically includes:
  • a first determining module configured to determine a gain compensation coefficient of red light in each region and a gain compensation coefficient of blue light
  • a second determining module configured to determine an adjustment coefficient of red light and blue light in the area according to a position of the area relative to a position of the television display light bar and a gain compensation coefficient of red light and blue light in the area, where The farther the area is relative to the television display strip, the smaller the adjustment factor of the red light in the area, and the larger the adjustment factor of the blue light.
  • the second determining module is specifically configured to:
  • k R represents the total number of reflections required for red light to pass through the television glass light guide
  • k B represents the total number of reflections required for the blue light to pass through the television glass light guide
  • a represents the preset color gain value in each region
  • b Represents the gain compensation coefficient of red light in the nth region relative to the television display light bar
  • c represents the gain compensation coefficient of blue light in the nth region relative to the television display light bar
  • N represents the area divided by the television display screen Number
  • the n is a positive integer and n ⁇ N.
  • the adjustment module is used to:
  • a R (n) B R (n)*[1+C R (n)];
  • a B (n) B B (n)*[1+C B (n)];
  • the invention provides a method and a device for adjusting a color shift of a television, comprising: dividing a television display screen into a plurality of regions according to a preset manner; determining the region according to a position of the region relative to a light bar of the television display screen; The adjustment coefficient of red light and blue light; the initial image in the area is adjusted according to the adjustment coefficient of red light and blue light in the area, and the adjusted image in each area is electrically Displayed according to the display.
  • the red and blue light in each area are adjusted according to the adjustment coefficients of red and blue light in each area, and will be adjusted.
  • the latter image is displayed on the TV display screen, which solves the problem that the TV display screen has a color shift due to the use of the glass light guide plate, thereby improving the viewing effect of the television.
  • FIG. 1 is a schematic flow chart of a first embodiment of a method for adjusting a color shift of a television according to the present invention
  • FIG. 2 is a schematic flow chart of the refinement step of step S20 shown in FIG. 1 of the present invention
  • FIG. 3 is a schematic diagram of division of a television display screen of the television color shift adjustment method of the present invention.
  • FIG. 4 is a schematic structural diagram of a functional module of a first embodiment of a television color shift adjusting device according to the present invention
  • FIG. 5 is a schematic structural diagram of a refinement function module of the determining module 220 shown in FIG. 4 of the present invention.
  • FIG. 1 is a schematic flow chart of a first embodiment of a method for adjusting a color shift of a television according to the present invention.
  • the method for adjusting a TV color shift includes:
  • step S10 the television display screen is divided into a plurality of areas according to a preset manner.
  • the television display screen is divided into a plurality of regions according to a predetermined division manner, and is configured to perform color shift adjustment on the display images of the respective regions.
  • the television display screen is divided into N regions according to a direction parallel to the television display light bar, and the N is a positive integer.
  • the television display screen can be equally divided into N according to the direction parallel to the television display light bar.
  • the same size area you can also divide the TV display into N different sizes according to the direction parallel to the TV display light bar.
  • the color shift generated in the central area of the television display is weak, so that when the area is divided, the size of the area near the light bar or away from the light bar may be smaller than the size of the central area of the display screen.
  • Step S20 determining an adjustment coefficient of red light and blue light in the area according to a position of the area relative to a television display light bar.
  • the intensity of the light that the television display light bar overflows in each area may be different, for example, in the area near the position of the light bar of the television display.
  • the overflow of the blue light is more than the blue light that overflows from the area away from the position of the TV display light bar. That is, the adjustment range of red light and blue light is different with respect to the different positions of the television display light bar.
  • the adjustment of red light and blue light in each area is determined according to the position of each area relative to the television display light bar. coefficient.
  • Step S30 adjusting an initial image in the area according to an adjustment coefficient of red light and blue light in the area, and displaying the adjusted image in each area on a television display screen.
  • the initial images in the respective regions are adjusted according to the adjustment coefficients of blue light and red light in each region. Specifically, the initial image in each area can be adjusted, and the adjusted image in each area is displayed on the television display screen.
  • the television display screen is divided into a plurality of areas according to a preset manner, and an adjustment coefficient of red light and blue light in the area is determined according to the position of the area relative to the position of the television display light bar, and according to the area
  • the red and blue adjustment coefficients adjust the initial image in the area and display the adjusted image in each area on the TV display.
  • the adjustment coefficients of red light and blue light in each region are determined, and the images in the respective regions are adjusted according to the adjustment coefficients of red light and blue light in each region, and the adjustment is performed.
  • the image is displayed on the TV display screen, which solves the problem that the LCD TV has a color shift due to the use of the glass light guide plate, thereby improving the viewing effect of the television.
  • FIG. 2 is a schematic flow chart of the refinement step of step S20 shown in FIG. 1 of the present invention. Based on the embodiment shown in FIG. 1 above, in this embodiment, the step S20 includes:
  • step S21 the gain compensation coefficient of the red light in each region and the gain compensation coefficient of the blue light are determined.
  • the gain compensation coefficient of the red light in each region and the gain compensation coefficient of the blue light are determined by testing and comparing the viewing effect of the television display screen multiple times. For example, setting different red light gain compensation coefficients and blue light gain compensation coefficients in the same area of two or more television display screens, and inputting the same image at the same time, by contrast, selecting an image to display the best television display screen, the television
  • the red light gain compensation coefficient and the blue light gain compensation coefficient corresponding to the display screen are the gain compensation coefficient of red light and the gain compensation coefficient of blue light in this embodiment.
  • Step S22 determining an adjustment coefficient of red light and blue light in the area according to a position of the area relative to a position of the television display light bar and a gain compensation coefficient of red light and blue light in the area, wherein the area is relative to The farther the television display strip is, the smaller the adjustment factor of the red light in the area is, and the larger the adjustment factor of the blue light.
  • the adjustment coefficients of red light and blue light in each region are respectively determined according to the positions of the respective regions with respect to the position of the television display light bar and the gain compensation coefficients of red light and blue light in each region.
  • the adjustment coefficient of the red light in the area is inversely proportional to the distance of the area relative to the television display light bar, that is, the farther the area is relative to the television display light bar, the smaller the adjustment coefficient of the red light;
  • the adjustment coefficient of the inner blue light is proportional to the distance of the area relative to the light bar of the television display, that is, the closer the area is to the light bar of the television display, the larger the adjustment coefficient of the blue light.
  • the gain compensation coefficient of the red light in each region and the gain compensation coefficient of the blue light are determined, and the gain compensation coefficients of the red light and the blue light in the region are respectively determined according to the position of the region relative to the television display light bar and the region.
  • the adjustment coefficient of red light and blue light in the area wherein the farther the area is relative to the television display light bar, the smaller the adjustment coefficient of the red light in the area, the larger the adjustment coefficient of the blue light. It is made possible to adjust the initial images in the respective regions according to the adjustment coefficients of red light and blue light in the respective regions, and display the adjusted images in the respective regions on the television display screen.
  • FIG. 3 is a schematic diagram of the television display screen division of the television color shift adjustment method of the present invention.
  • the light bar of the TV display is at the bottom of the TV display (the light bar of the TV display may also be at the top of the TV display, or at the far left or right end of the TV display), the closest The area of the television display light bar is the first area, the area away from the television display light bar is the nth area, and n is less than or equal to the total number of areas N.
  • k R represents the total number of reflections required for red light to pass through the television glass light guide
  • k B represents the total number of reflections required for the blue light to pass through the television glass light guide
  • a represents the preset color gain value in each region
  • b Represents the gain compensation coefficient of red light in the nth region relative to the television display light bar
  • c represents the gain compensation coefficient of blue light in the nth region relative to the television display light bar
  • N represents the area divided by the television display screen Number
  • the n is a positive integer and n ⁇ N.
  • v the propagation speed of light in the medium
  • C the total reflection angle of light in the medium
  • a color gain is preset in each area.
  • the value a wherein the color gain value a of each region can be determined according to the backlight intensity of each region of the television display screen.
  • the value of a is preferably between 0 and 10.
  • each color is divided into 256-order brightness, the color brightness is the weakest at 0, and the color brightness is the strongest at 255.
  • a/255 represents the ratio of the color gain value a in each region to the highest order color luminance.
  • the adjustment coefficients of red light and blue light in the area are respectively determined by the position of the area relative to the position of the television display light bar and the gain compensation coefficients of red and blue light in the area, as the area is relative to The distance of the TV display light bar increases, the adjustment of the red light will gradually become smaller, and the adjustment coefficient of the blue light will gradually become larger, that is, it can realize more red light in the area close to the light bar, away from the light bar.
  • the blue light with more compensation in the area solves the problem that the LCD TV displays color shift after using the glass light guide plate, and improves the viewing effect of the television.
  • the initial image in the area is adjusted according to an adjustment coefficient of red light and blue light in the area, by:
  • a R (n) B R (n)*[1+C R (n)];
  • a B (n) B B (n)*[1+C B (n)];
  • each image has one or more color channels.
  • images in RGB format have three color channels: red (R), green (G), and blue (B).
  • R red
  • G green
  • B blue
  • Each color channel holds information about the color elements in the image.
  • the color overlay blending in all color channels produces the color of the pixels in the image.
  • the adjusted image information A R (n), A G (n), A B (n) is displayed on the TV display.
  • the initial image in each area is adjusted according to the adjustment coefficients of red light and blue light in each area, so that more red light is compensated in the area close to the light bar, and more blue light is compensated in the area away from the light bar. , or reduce more blue light in the area near the light bar, reduce more red light in the area away from the light bar, and display the adjusted image on the TV display.
  • the problem of color shift of the LCD TV due to the use of the glass light guide plate is avoided, and the viewing effect of the television is improved.
  • FIG. 4 is a schematic structural diagram of a functional module of a first embodiment of a television color shift adjusting device according to the present invention.
  • the television color shift adjustment apparatus 200 includes:
  • the dividing module 210 is configured to divide the television display screen into a plurality of regions according to a preset manner.
  • the television display screen is divided into a plurality of regions according to a predetermined division manner, and is configured to perform color shift adjustment on the display images of the respective regions.
  • the television display screen is divided into N regions according to a direction parallel to the television display light bar, and the N is a positive integer.
  • the television display screen can be equally divided into N areas of the same size according to the direction parallel to the television display light bar, or the television display screen can be divided into N different sizes according to the direction parallel to the television display light bar.
  • the color shift is more obvious in the area near the light bar or away from the light bar, and the color shift generated in the central area of the television display is weak, when the area is divided, the light bar is close to or away from the light bar.
  • the size of the area can be significantly smaller than the size of the center of the display.
  • the determining module 220 is configured to determine an adjustment coefficient of red light and blue light in the area according to the position of the area relative to the television display light bar.
  • the intensity of the light that the television display light bar overflows in each area may be different, for example, in the area near the position of the light bar of the television display.
  • the overflow of the blue light is more than the blue light that overflows from the area away from the position of the TV display light bar. That is, the adjustment range of red light and blue light is different with respect to the different positions of the television display light bar.
  • the adjustment of red light and blue light in each area is determined according to the position of each area relative to the television display light bar. coefficient.
  • An adjustment module 230 configured to adjust the coefficient of red light and blue light in the area to the area The initial image is adjusted and the adjusted image in each area is displayed on the TV display.
  • the initial images in the respective regions are adjusted according to the adjustment coefficients of blue light and red light in each region. Specifically, the initial image output function in each area can be adjusted, and the adjusted image in each area is displayed on the television display screen.
  • the TV color shift adjustment apparatus 200 in this embodiment includes: the dividing module 210 divides the television display screen into a plurality of areas according to a preset manner, and the determining module 220 determines the position according to the position of the area relative to the television display light bar.
  • the adjustment coefficient of the red light and the blue light in the area the adjustment module 230 adjusts the initial image in the area according to the adjustment coefficient of the red light and the blue light in the area, and performs the adjusted image in each area on the television display screen. display.
  • the red and blue light in each area are adjusted according to the adjustment coefficients of red and blue light in each area, and will be adjusted.
  • the latter image is displayed on the TV display screen, which solves the problem that the TV display screen has a color shift due to the use of the glass light guide plate, thereby improving the viewing effect of the television.
  • FIG. 5 is a schematic structural diagram of a refinement function module of the determining module 220 shown in FIG. 4 of the present invention. Based on the embodiment shown in FIG. 4, in the embodiment, the determining module 220 includes:
  • the first determining module 221 is configured to determine a gain compensation coefficient of red light in each region and a gain compensation coefficient of the blue light.
  • the gain compensation coefficient of the red light in each region and the gain compensation coefficient of the blue light are determined by testing and comparing the viewing effect of the television display screen multiple times. For example, setting different red light gain compensation coefficients and blue light gain compensation coefficients in the same area of two or more television display screens, and inputting the same image at the same time, by contrast, selecting an image to display the best television display screen, the television
  • the red light gain compensation coefficient and the blue light gain compensation coefficient corresponding to the display screen are the gain compensation coefficient of red light and the gain compensation coefficient of blue light in this embodiment.
  • a second determining module 222 configured to determine an adjustment coefficient of red light and blue light in the area according to a position of the area relative to a position of the television display light bar and a gain compensation coefficient of red light and blue light in the area, where The farther the area is relative to the television display light bar, the smaller the adjustment factor of the red light in the area, and the larger the adjustment coefficient of the blue light.
  • the adjustment coefficients of red light and blue light in each region are respectively determined according to the positions of the respective regions with respect to the position of the television display light bar and the gain compensation coefficients of red light and blue light in each region.
  • the adjustment coefficient of the red light in the area is inversely proportional to the distance of the area relative to the television display light bar, that is, the farther the area is relative to the television display light bar, the smaller the adjustment coefficient of the red light;
  • the adjustment coefficient of the inner blue light is proportional to the distance of the area relative to the light bar of the television display, that is, the closer the area is to the light bar of the television display, the larger the adjustment coefficient of the blue light.
  • the determining module 220 in this embodiment determines the gain compensation coefficient of the red light in each area and the gain compensation coefficient of the blue light, and according to the position of the area relative to the television display light bar and the red light in the area And a gain compensation coefficient of the blue light respectively determines an adjustment coefficient of red light and blue light in the region, wherein the farther the region is relative to the television display light bar, the smaller the adjustment coefficient of the red light in the region, the blue light
  • the adjustment factor is larger. It is made possible to adjust the initial images in the respective regions according to the adjustment coefficients of red light and blue light in the respective regions, and display the adjusted images in the respective regions on the television display screen.
  • FIG. 3 is a schematic diagram of the television display screen division of the television color shift adjustment method of the present invention.
  • the light bar of the TV display is at the bottom of the TV display (the light bar of the TV display may also be at the top of the TV display, or at the far left or right end of the TV display), the closest The area of the television display light bar is the first area, the area away from the television display light bar is the nth area, and n is less than or equal to the total number of areas N.
  • the determining module 220 passes:
  • k R represents the total number of reflections required for red light to pass through the television glass light guide
  • k B represents the total number of reflections required for the blue light to pass through the television glass light guide
  • a represents the preset color gain value in each region
  • b Represents the gain compensation coefficient of red light in the nth region relative to the television display light bar
  • c represents the gain compensation coefficient of blue light in the nth region relative to the television display light bar
  • N represents the area divided by the television display screen Number
  • the n is a positive integer and n ⁇ N.
  • v the propagation speed of light in the medium
  • C the total reflection angle of light in the medium
  • a color gain is preset in each area.
  • the value a wherein the color gain value a of each region can be determined according to the backlight intensity of each region of the television display screen.
  • the value of a is preferably between 0 and 10.
  • each color is divided into 256-order brightness, the color brightness is the weakest at 0, and the color brightness is the strongest at 255.
  • a/255 represents the ratio of the color gain value a in each region to the highest order color luminance.
  • the adjustment coefficients of red light and blue light in the area are respectively determined by the position of the area relative to the position of the television display light bar and the gain compensation coefficients of red and blue light in the area, as the area is relative to The distance of the TV display light bar increases, the adjustment of the red light will gradually become smaller, and the adjustment coefficient of the blue light will gradually become larger, that is, it can realize more red light in the area close to the light bar, away from the light bar.
  • the area compensates less red light, and compensates less blue light in the area close to the light bar, and compensates more blue light in the area away from the light bar, which solves the color shift of the television display after the use of the glass light guide plate of the liquid crystal television. The problem has improved the viewing effect of the TV.
  • the adjustment module 230 adjusts an initial image in the area according to an adjustment coefficient of red light and blue light in the area, by:
  • a R (n) B R (n)*[1+C R (n)];
  • a B (n) B B (n)*[1+C B (n)];
  • each image has one or more color channels.
  • images in RGB format have three color channels: red (R), green (G), and blue (B).
  • RGB format have three color channels: red (R), green (G), and blue (B).
  • RGB format has three color channels: red (R), green (G), and blue (B).
  • RGB format has three color channels: red (R), green (G), and blue (B).
  • RGB format has three color channels: red (R), green (G), and blue (B).
  • Each color channel holds information about the color elements in the image.
  • the color overlay blending in all color channels produces the color of the pixels in the image.
  • the adjusted image information A R (n), A G (n), A B (n) is displayed on the TV display.
  • the initial image in each area is adjusted according to the adjustment coefficients of red light and blue light in each area, so that more red light is compensated in the area close to the light bar, and more blue light is compensated in the area away from the light bar. , or reduce more blue light in the area near the light bar, reduce more red light in the area away from the light bar, and display the adjusted image on the TV display.
  • the problem of color shift of the LCD TV due to the use of the glass light guide plate is avoided, and the viewing effect of the television is improved.

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  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Human Computer Interaction (AREA)
  • Physics & Mathematics (AREA)
  • Computer Hardware Design (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Control Of Indicators Other Than Cathode Ray Tubes (AREA)
  • Processing Of Color Television Signals (AREA)
  • Liquid Crystal Display Device Control (AREA)

Abstract

本发明公开了一种电视色偏调整方法，包括：将电视显示屏按照预设的方式划分为多个区域；根据所述区域相对于电视显示屏灯条的位置确定所述区域内红光与蓝光的调整系数；根据所述区域内红光与蓝光的调整系数对所述区域内的初始图像进行调整，并将各个区域内调整后的图像在电视显示屏进行显示。本发明还公开了一种电视色偏调整装置。通过将电视显示屏划分为多个区域，并确定各个区域内红光与蓝光的调整系数，根据各个区域内红光与蓝光的调整系数对各个区域内的红光与蓝光进行调整，并将调整后的图像在电视显示屏进行显示，解决了电视显示屏由于使用玻璃导光板而出现色偏的问题，提高了电视的观影效果。

Description

电视色偏调整方法及装置 技术领域
本发明涉及电视显示技术领域，尤其涉及一种电视色偏调整方法及装置。
背景技术
目前超薄电视已成为一种发展趋势，为了追求更薄，只有使用玻璃导光板才能做到，但玻璃导光板因对不同颜色的光折射率差异较大，导致出现显示屏靠近light bar(灯条)的一侧偏蓝，远离light bar的那一侧偏红的问题，影响电视的观影效果。
发明内容
本发明的主要目的在于提出一种电视色偏调整方法及装置，旨在解决由于使用玻璃导光板导致电视显示屏出现色偏，影响电视观影效果的技术问题。
为实现上述目的，本发明提供一种电视色偏调整方法，方法包括：
将电视显示屏按照预设的方式划分为多个区域；
根据所述区域相对于电视显示屏灯条的位置确定所述区域内红光与蓝光的调整系数；
根据所述区域内红光与蓝光的调整系数对所述区域内的初始图像进行调整，并将各个区域内调整后的图像在电视显示屏进行显示。
优选地，所述将电视显示屏按照预设的方式划分为多个区域包括：
将电视显示屏按照与电视显示屏灯条平行的方向划分为N个区域，所述N为正整数。
优选地，所述根据所述区域相对于电视显示屏灯条的位置确定所述区域内红光与蓝光的调整系数包括：
确定各个区域内红光的增益补偿系数与蓝光的增益补偿系数；
根据所述区域相对于电视显示屏灯条的位置和所述区域内红光与蓝光的增益补偿系数分别确定所述区域内红光与蓝光的调整系数，其中，所述区域相对于电视显示屏灯条越远，则所述区域内红光的调整系数越小，蓝光的调整系数越大。
优选地，所述根据所述区域相对于电视显示屏灯条的位置和所述区域内红光与蓝光的增益补偿系数分别确定所述区域内红光与蓝光的调整系数包括：
通过
Figure PCTCN2016112466-appb-000001
得到第n个区域内红光的调整系数CR(n)；
通过
Figure PCTCN2016112466-appb-000002
得到第n个区域内蓝光的调整系数CB(n)；
其中，kR表示红光穿过电视玻璃导光板所需要的全反射次数，kB表示蓝光穿过电视玻璃导光板所需要的全反射次数，a表示各个区域内预设的颜色增益值，b表示相对于电视显示屏灯条的第n个区域内红光的增益补偿系数，c表示相对于电视显示屏灯条的第n个区域内蓝光的增益补偿系数，N表示电视显示屏划分的区域个数，所述n为正整数且n≤N。
优选地，所述根据所述区域内红光与蓝光的调整系数对所述区域内的初始图像进行调整包括：
通过：
AR(n)＝BR(n)*[1+CR(n)]；
AG(n)＝BG(n)*1；
AB(n)＝BB(n)*[1+CB(n)]；
得到第n个区域内调整后的图像信息AR(n)、AG(n)、AB(n)；其中，BR(n)、BG(n)、BB(n)表示第n个区域内的初始图像对应的红(R)、绿(G)、蓝(B)三种颜色通道。
另外，为实现上述目的，本发明还提供一种电视色偏调整装置，所述装置包括：
划分模块，用于将电视显示屏按照预设的方式划分为多个区域；
确定模块，用于根据所述区域相对于电视显示屏灯条的位置确定所述区域内红光与蓝光的调整系数；
调整模块，用于根据所述区域内红光与蓝光的调整系数对所述区域内的初始图像进行调整，并将各个区域内调整后的图像在电视显示屏进行显示。
优选地，所述划分模块具体用于：
将电视显示屏按照与电视显示屏灯条平行的方向划分为N个区域，所述 N为正整数。
优选地，所述确定模块具体包括：
第一确定模块，用于确定各个区域内红光的增益补偿系数与蓝光的增益补偿系数；
第二确定模块，用于根据所述区域相对于电视显示屏灯条的位置和所述区域内红光与蓝光的增益补偿系数分别确定所述区域内红光与蓝光的调整系数，其中，所述区域相对于电视显示屏灯条越远，则所述区域内红光的调整系数越小，蓝光的调整系数越大。
优选地，所述第二确定模块具体用于：
通过
Figure PCTCN2016112466-appb-000003
得到第n个区域内红光的调整系数CR(n)；
通过
Figure PCTCN2016112466-appb-000004
得到第n个区域内蓝光的调整系数CB(n)；
其中，kR表示红光穿过电视玻璃导光板所需要的全反射次数，kB表示蓝光穿过电视玻璃导光板所需要的全反射次数，a表示各个区域内预设的颜色增益值，b表示相对于电视显示屏灯条的第n个区域内红光的增益补偿系数，c表示相对于电视显示屏灯条的第n个区域内蓝光的增益补偿系数，N表示电视显示屏划分的区域个数，所述n为正整数且n≤N。
优选地，所述调整模块用于：
通过：
AR(n)＝BR(n)*[1+CR(n)]；
AG(n)＝BG(n)*1；
AB(n)＝BB(n)*[1+CB(n)]；
得到第n个区域内调整后的图像信息AR(n)、AG(n)、AB(n)；其中，BR(n)、BG(n)、BB(n)表示第n个区域内的初始图像对应的红(R)、绿(G)、蓝(B)三种颜色通道。
本发明所提供的一种电视色偏调整方法及装置，包括：将电视显示屏按照预设的方式划分为多个区域；根据所述区域相对于电视显示屏灯条的位置确定所述区域内红光与蓝光的调整系数；根据所述区域内红光与蓝光的调整系数对所述区域内的初始图像进行调整，并将各个区域内调整后的图像在电 视显示屏进行显示。通过将电视显示屏划分为多个区域，并确定各个区域内红光与蓝光的调整系数，根据各个区域内红光与蓝光的调整系数对各个区域内的红光与蓝光进行调整，并将调整后的图像在电视显示屏进行显示，解决了电视显示屏由于使用玻璃导光板而出现色偏的问题，提高了电视的观影效果。
附图说明
图1是本发明电视色偏调整方法第一实施例的流程示意图；
图2是本发明图1所示步骤S20的细化步骤流程示意图；
图3是本发明电视色偏调整方法电视显示屏划分示意图；
图4是本发明电视色偏调整装置第一实施例的功能模块结构示意图；
图5是本发明图4所示确定模块220的细化功能模块结构示意图。
本发明目的的实现、功能特点及优点将结合实施例，参照附图做进一步说明。
具体实施方式
以下结合说明书附图对本发明的优选实施例进行说明，应当理解，此处所描述的优选实施例仅用于说明和解释本发明，并不用于限定本发明，并且在不冲突的情况下，本发明中的实施例及实施例中的特征可以相互组合。
参照图1，图1是本发明电视色偏调整方法第一实施例的流程示意图。本实施例中，所述电视色偏调整方法包括：
步骤S10，将电视显示屏按照预设的方式划分为多个区域。
由于不同颜色的光线在玻璃导光板中的折射率不同，所以不同颜色的光穿过玻璃导光板所产生的折射次数也会不同，且不同颜色的光随着传播距离的增加，其在不同区域溢出的光也会不同。本实施例中，将电视显示屏按照预设的划分方式划分为多个区域，用于能够对各个区域的显示图像分别进行色偏调整。
其中，将所述电视显示屏按照与所述电视显示屏灯条平行的方向划分为N个区域，所述N为正整数。
其中，可以将电视显示屏按照与电视显示屏灯条平行的方向平均划分为N 个大小相同区域，也可以将电视显示屏按照与电视显示屏灯条平行的方向划分为N个大小不同的区域，例如，由于在靠近灯条或远离灯条的区域，产生的色偏较明显，而在电视显示屏中心区域产生的色偏较弱，故在划分区域时，靠近灯条或远离灯条的区域的大小可以小于显示屏中心区域的大小。
步骤S20，根据所述区域相对于电视显示屏灯条的位置确定所述区域内红光与蓝光的调整系数。
本实施例中，由于各个区域相对于电视显示屏灯条的位置不同，故电视显示屏灯条在各个区域内溢出的光的强度也会不同，例如，在靠近电视显示屏灯条位置的区域溢出的蓝光要比远离电视显示屏灯条位置的区域溢出的蓝光多。即相对于电视显示屏灯条不同位置的区域，对红光与蓝光的调整幅度也会不同，本实施例根据各个区域相对于电视显示屏灯条的位置确定各个区域内红光与蓝光的调整系数。
步骤S30，根据所述区域内红光与蓝光的调整系数对所述区域内的初始图像进行调整，并将各个区域内调整后的图像在电视显示屏进行显示。
本实施例中，在确定各个区域内红光与蓝光的调整系数后，根据各个区域内蓝光与红光的调整系数对各个区域内的初始图像进行调整。具体可通过对各个区域内的初始图像进行调整，并将各个区域内调整后的图像在电视显示屏进行显示。
本实施例将电视显示屏按照预设的方式划分为多个区域，根据所述区域相对于电视显示屏灯条的位置确定所述区域内红光与蓝光的调整系数，以及根据所述区域内红光与蓝光的调整系数对所述区域内的初始图像进行调整，并将各个区域内调整后的图像在电视显示屏进行显示。本实施例通过将电视显示屏划分为多个区域，确定各个区域内红光与蓝光的调整系数，根据各个区域内红光与蓝光的调整系数对各个区域内的图像进行调整，并将调整后的图像在电视显示屏进行显示的方式，解决了液晶电视由于使用玻璃导光板导致电视显示屏出现色偏的问题，提高了电视的观影效果。
进一步地，参照图2，图2是本发明图1所示步骤S20的细化步骤流程示意图。基于上述图1所示的实施例，本实施例中，所述步骤S20包括：
步骤S21，确定各个区域内红光的增益补偿系数与蓝光的增益补偿系数。
本实施例中，通过多次对电视显示屏观影效果的试验与对比，确定各个区域内红光的增益补偿系数与蓝光的增益补偿系数。例如，在两台或者多台电视显示屏中的相同区域设置不同的红光增益补偿系数与蓝光增益补偿系数，同时输入相同的图像，通过对比，选取图像显示最佳的电视显示屏，该电视显示屏对应的红光增益补偿系数与蓝光增益补偿系数即为本实施例中红光的增益补偿系数与蓝光的增益补偿系数。
步骤S22，根据所述区域相对于电视显示屏灯条的位置和所述区域内红光与蓝光的增益补偿系数分别确定所述区域内红光与蓝光的调整系数，其中，所述区域相对于电视显示屏灯条越远，则所述区域内红光的调整系数越小，蓝光的调整系数越大。
本实施例中，根据各个区域相对于电视显示屏灯条的位置以及各个区域内红光与蓝光的增益补偿系数分别确定各个区域内红光与蓝光的调整系数。其中，所述区域内红光的调整系数与该区域相对于电视显示屏灯条的距离成反比，即该区域相对于电视显示屏灯条越远，红光的调整系数越小；所述区域内蓝光的调整系数与该区域相对于电视显示屏灯条的距离成正比，即该区域相对于电视显示屏灯条越近，蓝光的调整系数越大。
本实施例通过确定各个区域内红光的增益补偿系数与蓝光的增益补偿系数，并根据所述区域相对于电视显示屏灯条的位置和所述区域内红光与蓝光的增益补偿系数分别确定所述区域内红光与蓝光的调整系数，其中，所述区域相对于电视显示屏灯条越远，则所述区域内红光的调整系数越小，蓝光的调整系数越大。使得可以根据所述各个区域内红光与蓝光的调整系数对所述各个区域内的初始图像进行调整，并将各个区域内调整后的图像在电视显示屏进行显示。
进一步地，为了更好的说明本发明电视色偏调整方法，参照图3，图3是本发明电视色偏调整方法电视显示屏划分示意图。假设电视显示屏的灯条位于电视显示屏的最底端(电视显示屏的灯条还有可能在电视显示屏的最顶端，或者在电视显示屏的最左端或最右端)，则以最靠近电视显示屏灯条的区域为第1个区域，远离电视显示屏灯条的区域为第n个区域，且n小于或等于总区域个数N。
基于上述图1所示的实施例，本实施例中，通过：
Figure PCTCN2016112466-appb-000005
得到第n个区域内红光的调整系数CR(n)；通过：得到第n个区域内蓝光的调整系数CB(n)。
其中，kR表示红光穿过电视玻璃导光板所需要的全反射次数，kB表示蓝光穿过电视玻璃导光板所需要的全反射次数，a表示各个区域内预设的颜色增益值，b表示相对于电视显示屏灯条的第n个区域内红光的增益补偿系数，c表示相对于电视显示屏灯条的第n个区域内蓝光的增益补偿系数，N表示电视显示屏划分的区域个数，所述n为正整数且n≤N。
其中，kR与kB的值的计算方法可以通过以下方式实现：
利用介质对光的折射率n＝c/v＝1/sinC(c为光在真空中的传播速度、v为光在该介质中的传播速度，C为光在该介质中的全反射角)，而光在介质中传播的频率f不变，光在介质中的传播速度v＝f*λ(λ为光的波长)，以55寸的电视玻璃导光板为例：设该电视玻璃导光板长度为710mm，厚度为3mm，红光在玻璃导光板中的折射率为1.21、蓝光在玻璃导光板中的折射率为1.86；根据
Figure PCTCN2016112466-appb-000007
即可计算出红光在玻璃导光板中的全反射角为55.6°，蓝光在玻璃导光板中的全反射角为31°；假设一束光从玻璃导光板一侧沿玻璃导光板长度延伸方向射入，从另一侧射出，那么该束光在玻璃导光板中的全反射次数＝710/(3*tanC)；综上便可以计算出：红光成功玻璃导光板所需要的全反射次数为154次、蓝光穿过电视玻璃导光板所需要的全反射次数为364次。
其中，为了使各个区域内调整后的图像在电视显示屏进行显示时，各个区域之间的图像能够平滑过渡，提高用户的观影效果，本实施例中，在各个区域内预设一个颜色增益值a，其中，可以根据电视显示屏各个区域的背光强度来确定各个区域的颜色增益值a。本实施例中，a的取值优选为0-10之间。
其中，在进行图像显示时，每种颜色各分为256阶亮度，在0时颜色亮度最弱，，而在255时颜色亮度最强。本实施例中，a/255表示各个区域内的颜色增益值a在最高阶颜色亮度占的比例。
其中，对于在第n个区域内红光的调整系数CR(n)，随着n的值逐渐变大，“N-b*n”的值则会逐渐变小，红光的调整系数CR(n)也会逐渐变小；对于在第n个区域内蓝光的调整系数CB(n)，随着n的值逐渐变大，“c*n-N”的值则会逐渐变大，蓝光的调整系数CB(n)也会逐渐变大。
本实施例通过所述区域相对于电视显示屏灯条的位置和所述区域内红光与蓝光的增益补偿系数分别确定所述区域内红光与蓝光的调整系数，随着所述区域相对于电视显示屏灯条的距离增加，红光的调整系会会逐渐变小，蓝光的调整系数会逐渐变大，即能够实现在靠近灯条的区域补偿较多的红光，在远离灯条的区域补偿较多的蓝光，解决了液晶电视在使用玻璃导光板后电视显示屏出现色偏的问题，提高了电视的观影效果。
进一步地，基于上述图1所述的实施例，本实施例中，根据所述区域内红光与蓝光的调整系数对所述区域内的初始图像进行调整，通过：
AR(n)＝BR(n)*[1+CR(n)]；
AG(n)＝BG(n)*1；
AB(n)＝BB(n)*[1+CB(n)]；
得到第n个区域内调整后的图像信息AR(n)、AG(n)、AB(n)；其中，BR(n)、BG(n)、BB(n)表示第n个区域内的初始图像对应的红(R)、绿(G)、蓝(B)三种颜色通道。
本实施例中，本领域技术人员可以理解，每个图像都有一个或多个颜色通道，例如，RGB格式的图像有红(R)、绿(G)、蓝(B)3个颜色通道，每个颜色通道都存放着图像中颜色元素的信息。所有颜色通道中的颜色叠加混合产生图像中像素的颜色。
本实施例中，所述各个区域内的图像信息随着红光与蓝光的调整系数的变化而变化，其中，当CR(n)＝0时，AR(n)＝BR(n)，即表示在该区域内既不增加红光，也不减少红光；当CR(n)>0时，AR(n)＞BR(n)，即表示在该区域内增加红光，并且CR(n)的值越大，增加的红光越多；当CR(n)<0时，AR(n)＜BR(n)，即表示在该区域内减少红光，且CR(n)的值越小，减少的红光越多。另外，当CB(n)＝0时，AB(n)＝BB(n)，即表示在该区域内既不增加蓝光，也不减少蓝光；当CB(n)>0时，AB(n)＞BB(n)，即表示在该区域内增加蓝光，并且CR(n)的值越大，增加的蓝光越多；当CB(n)<0时，AB(n)＜BB(n)，即表示在该区域内减少蓝光，且CR(n)的值越小，减少的蓝光越多。
其中，由于绿色光在电视玻璃导光板中的全反射次数介于红光与蓝光之间，因此对电视显示屏各个区域内的绿光不做调整，即AG(n)＝BG(n)。
其中，在对各个区域内的初始图像信息BR(n)、BG(n)、BB(n)进行调整后，将调整后的图像信息AR(n)、AG(n)、AB(n)在电视显示屏进行显示。
本实施例根据各个区域内红光与蓝光的调整系数对各个区域内的初始图像进行调整，能够使得在靠近灯条的区域补偿较多的红光，在远离灯条的区域补偿较多的蓝光，或者在靠近灯条的区域减少较多的蓝光，在远离灯条的区域减少较多的红光，并将调整后的图像在电视显示屏进行显示。避免了液晶电视由于使用玻璃导光板出现色偏的问题，提高了电视的观影效果。
参照图4，图4是本发明电视色偏调整装置第一实施例的功能模块结构示意图。本实施例中，所述电视色偏调整装置200包括：
划分模块210，用于将电视显示屏按照预设的方式划分为多个区域。
由于不同颜色的光线在玻璃导光板中的折射率不同，所以不同颜色的光穿过玻璃导光板所产生的折射次数也会不同，且不同颜色的光随着传播距离的增加，其在不同区域溢出的光也会不同。本实施例中，将电视显示屏按照预设的划分方式划分为多个区域，用于能够对各个区域的显示图像分别进行色偏调整。
其中，将所述电视显示屏按照与所述电视显示屏灯条平行的方向划分为N个区域，所述N为正整数。
其中，可以将电视显示屏按照与电视显示屏灯条平行的方向平均划分为N个大小相同区域，也可以将电视显示屏按照与电视显示屏灯条平行的方向划分为N个大小不同的区域，例如，由于在靠近灯条或远离灯条的区域，产生的色偏较明显，而在电视显示屏中心区域产生的色偏较弱，故在划分区域时，靠近灯条或远离灯条的区域的大小可以明显小于显示屏中心区域的大小。
确定模块220，用于根据所述区域相对于电视显示屏灯条的位置确定所述区域内红光与蓝光的调整系数。
本实施例中，由于各个区域相对于电视显示屏灯条的位置不同，故电视显示屏灯条在各个区域内溢出的光的强度也会不同，例如，在靠近电视显示屏灯条位置的区域溢出的蓝光要比远离电视显示屏灯条位置的区域溢出的蓝光多。即相对于电视显示屏灯条不同位置的区域，对红光与蓝光的调整幅度也会不同，本实施例根据各个区域相对于电视显示屏灯条的位置确定各个区域内红光与蓝光的调整系数。
调整模块230，用于根据所述区域内红光与蓝光的调整系数对所述区域内 的初始图像进行调整，并将各个区域内调整后的图像在电视显示屏进行显示。
本实施例中，在确定各个区域内红光与蓝光的调整系数后，根据各个区域内蓝光与红光的调整系数对各个区域内的初始图像进行调整。具体可通过对各个区域内的初始图像输出函数进行调整，并将各个区域内调整后的图像在电视显示屏进行显示。
本实施例中的电视色偏调整装置200包括：划分模块210将电视显示屏按照预设的方式划分为多个区域，确定模块220根据所述区域相对于电视显示屏灯条的位置确定所述区域内红光与蓝光的调整系数，调整模块230根据所述区域内红光与蓝光的调整系数对所述区域内的初始图像进行调整，并将各个区域内调整后的图像在电视显示屏进行显示。通过将电视显示屏划分为多个区域，并确定各个区域内红光与蓝光的调整系数，根据各个区域内红光与蓝光的调整系数对各个区域内的红光与蓝光进行调整，并将调整后的图像在电视显示屏进行显示，解决了电视显示屏由于使用玻璃导光板而出现色偏的问题，提高了电视的观影效果。
进一步地，参照图5，图5是本发明图4所示的确定模块220的细化功能模块结构示意图。基于上述图4所示的实施例，本实施例中，所述确定模块220包括：
第一确定模块221，用于确定各个区域内红光的增益补偿系数与蓝光的增益补偿系数。
本实施例中，通过多次对电视显示屏观影效果的试验与对比，确定各个区域内红光的增益补偿系数与蓝光的增益补偿系数。例如，在两台或者多台电视显示屏中的相同区域设置不同的红光增益补偿系数与蓝光增益补偿系数，同时输入相同的图像，通过对比，选取图像显示最佳的电视显示屏，该电视显示屏对应的红光增益补偿系数与蓝光增益补偿系数即为本实施例中红光的增益补偿系数与蓝光的增益补偿系数。
第二确定模块222，用于根据所述区域相对于电视显示屏灯条的位置和所述区域内红光与蓝光的增益补偿系数分别确定所述区域内红光与蓝光的调整系数，其中，所述区域相对于电视显示屏灯条越远，则所述区域内红光的调整系数越小，蓝光的调整系数越大。
本实施例中，根据各个区域相对于电视显示屏灯条的位置以及各个区域内红光与蓝光的增益补偿系数分别确定各个区域内红光与蓝光的调整系数。其中，所述区域内红光的调整系数与该区域相对于电视显示屏灯条的距离成反比，即该区域相对于电视显示屏灯条越远，红光的调整系数越小；所述区域内蓝光的调整系数与该区域相对于电视显示屏灯条的距离成正比，即该区域相对于电视显示屏灯条越近，蓝光的调整系数越大。
本实施例中的确定模块220本实施例通过确定各个区域内红光的增益补偿系数与蓝光的增益补偿系数，并根据所述区域相对于电视显示屏灯条的位置和所述区域内红光与蓝光的增益补偿系数分别确定所述区域内红光与蓝光的调整系数，其中，所述区域相对于电视显示屏灯条越远，则所述区域内红光的调整系数越小，蓝光的调整系数越大。使得可以根据所述各个区域内红光与蓝光的调整系数对所述各个区域内的初始图像进行调整，并将各个区域内调整后的图像在电视显示屏进行显示。
进一步地，为了更好的说明本发明电视色偏调整方法，参照图3，图3是本发明电视色偏调整方法电视显示屏划分示意图。假设电视显示屏的灯条位于电视显示屏的最底端(电视显示屏的灯条还有可能在电视显示屏的最顶端，或者在电视显示屏的最左端或最右端)，则以最靠近电视显示屏灯条的区域为第1个区域，远离电视显示屏灯条的区域为第n个区域，且n小于或等于总区域个数N。
基于上述图4所示的实施例，本实施例中，确定模块220，通过：
Figure PCTCN2016112466-appb-000008
得到第n个区域内红光的调整系数CR(n)；通过：
Figure PCTCN2016112466-appb-000009
得到第n个区域内蓝光的调整系数CB(n)。
其中，kR表示红光穿过电视玻璃导光板所需要的全反射次数，kB表示蓝光穿过电视玻璃导光板所需要的全反射次数，a表示各个区域内预设的颜色增益值，b表示相对于电视显示屏灯条的第n个区域内红光的增益补偿系数，c表示相对于电视显示屏灯条的第n个区域内蓝光的增益补偿系数，N表示电视显示屏划分的区域个数，所述n为正整数且n≤N。
其中，kR与kB的值的计算方法可以通过以下方式实现：
利用介质对光的折射率n＝c/v＝1/sinC(c为光在真空中的传播速度、v为光在该介质中的传播速度，C为光在该介质中的全反射角)，而光在介质中传播的频率f不变，光在介质中的传播速度v＝f*λ(λ为光的波长)，以55寸的电视玻璃导光板为例：设该电视玻璃导光板长度为710mm，厚度为3mm，红光在玻璃导光板中的折射率为1.21、蓝光在玻璃导光板中的折射率为1.86；根据
Figure PCTCN2016112466-appb-000010
即可计算出红光在玻璃导光板中的全反射角为55.6°，蓝光在玻璃导光板中的全反射角为31°；假设一束光从玻璃导光板一侧沿玻璃导光板长度延伸方向射入，从另一侧射出，那么该束光在玻璃导光板中的全反射次数＝710/(3*tanC)；综上便可以计算出：红光成功玻璃导光板所需要的全反射次数为154次、蓝光穿过电视玻璃导光板所需要的全反射次数为364次。
其中，为了使各个区域内调整后的图像在电视显示屏进行显示时，各个区域之间的图像能够平滑过渡，提高用户的观影效果，本实施例中，在各个区域内预设一个颜色增益值a，其中，可以根据电视显示屏各个区域的背光强度来确定各个区域的颜色增益值a。本实施例中，a的取值优选为0-10之间。
其中，在进行图像显示时，每种颜色各分为256阶亮度，在0时颜色亮度最弱，，而在255时颜色亮度最强。本实施例中，a/255表示各个区域内的颜色增益值a在最高阶颜色亮度占的比例。
其中，对于在第n个区域内红光的调整系数CR(n)，随着n的值逐渐变大，“N-b*n”的值则会逐渐变小，红光的调整系数CR(n)也会逐渐变小；对于在第n个区域内蓝光的调整系数CB(n)，随着n的值逐渐变大，“c*n-N”的值则会逐渐变大，蓝光的调整系数CB(n)也会逐渐变大。
本实施例通过所述区域相对于电视显示屏灯条的位置和所述区域内红光与蓝光的增益补偿系数分别确定所述区域内红光与蓝光的调整系数，随着所述区域相对于电视显示屏灯条的距离增加，红光的调整系会会逐渐变小，蓝光的调整系数会逐渐变大，即能够实现在靠近灯条的区域补偿较多的红光，在远离灯条的区域补偿较少的红光，以及在靠近灯条的区域补偿较少的蓝光，在远离灯条的区域补偿较多的蓝光，解决了液晶电视在使用玻璃导光板后电视显示屏出现色偏的问题，提高了电视的观影效果。
进一步地，基于上述图4所述的实施例，本实施例中，所述调整模块230，根据所述区域内红光与蓝光的调整系数对所述区域内的初始图像进行调整， 通过：
AR(n)＝BR(n)*[1+CR(n)]；
AG(n)＝BG(n)*1；
AB(n)＝BB(n)*[1+CB(n)]；
得到第n个区域内调整后的图像信息AR(n)、AG(n)、AB(n)；其中，BR(n)、BG(n)、BB(n)表示第n个区域内的初始图像对应的红(R)、绿(G)、蓝(B)三种颜色通道。本实施例中，本领域技术人员可以理解，每个图像都有一个或多个颜色通道，例如，RGB格式的图像有红(R)、绿(G)、蓝(B)3个颜色通道，每个颜色通道都存放着图像中颜色元素的信息。所有颜色通道中的颜色叠加混合产生图像中像素的颜色。
本实施例中，所述各个区域内的图像信息随着红光与蓝光的调整系数的变化而变化，其中，当CR(n)＝0时，AR(n)＝BR(n)，即表示在该区域内既不增加红光，也不减少红光；当CR(n)>0时，AR(n)＞BR(n)，即表示在该区域内增加红光，并且CR(n)的值越大，增加的红光越多；当CR(n)<0时，AR(n)＜BR(n)，即表示在该区域内减少红光，且CR(n)的值越小，减少的红光越多。另外，当CB(n)＝0时，AB(n)＝BB(n)，即表示在该区域内既不增加蓝光，也不减少蓝光；当CB(n)>0时，AB(n)＞BB(n)，即表示在该区域内增加蓝光，并且CR(n)的值越大，增加的蓝光越多；当CB(n)<0时，AB(n)＜BB(n)，即表示在该区域内减少蓝光，且CR(n)的值越小，减少的蓝光越多。
其中，由于绿色光在电视玻璃导光板中的全反射次数介于红光与蓝光之间，因此对电视显示屏各个区域内的绿光不做调整，即AG(n)＝BG(n)。
其中，在对各个区域内的初始图像信息BR(n)、BG(n)、BB(n)进行调整后，将调整后的图像信息AR(n)、AG(n)、AB(n)在电视显示屏进行显示。
本实施例根据各个区域内红光与蓝光的调整系数对各个区域内的初始图像进行调整，能够使得在靠近灯条的区域补偿较多的红光，在远离灯条的区域补偿较多的蓝光，或者在靠近灯条的区域减少较多的蓝光，在远离灯条的区域减少较多的红光，并将调整后的图像在电视显示屏进行显示。避免了液晶电视由于使用玻璃导光板出现色偏的问题，提高了电视的观影效果。
以上仅为本发明的优选实施例，并非因此限制本发明的专利范围，凡是利用本发明说明书及附图内容所作的等效结构或等效流程变换，或直接或间接运用在其他相关的技术领域，均同理包括在本发明的专利保护范围内。

Claims (12)

  1. 一种电视色偏调整方法，其特征在于，所述电视色偏调整方法包括：
    将电视显示屏按照预设的方式划分为多个区域；
    根据所述区域相对于电视显示屏灯条的位置确定所述区域内红光与蓝光的调整系数；
    根据所述区域内红光与蓝光的调整系数对所述区域内的初始图像进行调整，并将各个区域内调整后的图像在电视显示屏进行显示。
  2. 根据权利要求1所述的电视色偏调整方法，其特征在于，所述将电视显示屏按照预设的方式划分为多个区域包括：
    将电视显示屏按照与电视显示屏灯条平行的方向划分为N个区域，所述N为正整数。
  3. 根据权利要求2所述的电视色偏调整方法，其特征在于，所述将电视显示屏按照与电视显示屏灯条平行的方向划分为N个区域包括：
    将电视显示屏按照与电视显示屏灯条平行的方向划分为N个大小相同的区域；或者，将电视显示屏按照与电视显示屏灯条平行的方向划分为N个大小不同的区域。
  4. 根据权利要求1所述的电视色偏调整方法，其特征在于，所述根据所述区域相对于电视显示屏灯条的位置确定所述区域内红光与蓝光的调整系数包括：
    确定各个区域内红光的增益补偿系数与蓝光的增益补偿系数；
    根据所述区域相对于电视显示屏灯条的位置和所述区域内红光与蓝光的增益补偿系数分别确定所述区域内红光与蓝光的调整系数，其中，所述区域相对于电视显示屏灯条越远，则所述区域内红光的调整系数越小，蓝光的调整系数越大。
  5. 根据权利要求4所述的电视色偏调整方法，其特征在于，所述根据所述区域相对于电视显示屏灯条的位置和所述区域内红光与蓝光的增益补偿系数分别确定所述区域内红光与蓝光的调整系数包括：
    通过
    Figure PCTCN2016112466-appb-100001
    得到第n个区域内红光的调整系数CR(n)；
    通过
    Figure PCTCN2016112466-appb-100002
    得到第n个区域内蓝光的调整系数CB(n)；
    其中，kR表示红光穿过电视玻璃导光板所需要的全反射次数，kB表示蓝光穿过电视玻璃导光板所需要的全反射次数，a表示各个区域内预设的颜色增益值，b表示相对于电视显示屏灯条的第n个区域内红光的增益补偿系数，c表示相对于电视显示屏灯条的第n个区域内蓝光的增益补偿系数，N表示电视显示屏划分的区域个数，所述n为正整数且n≤N。
  6. 根据权利要求5所述的电视色偏调整方法，其特征在于，所述根据所述区域内红光与蓝光的调整系数对所述区域内的初始图像进行调整包括：
    通过：
    AR(n)＝BR(n)*[1+CR(n)]；
    AG(n)＝BG(n)*1；
    AB(n)＝BB(n)*[1+CB(n)]；
    得到第n个区域内调整后的图像信息AR(n)、AG(n)、AB(n)；其中，BR(n)、BG(n)、BB(n)表示第n个区域内的初始图像对应的红(R)、绿(G)、蓝(B)三种颜色通道。
  7. 一种电视色偏调整装置，其特征在于，所述电视色偏调整装置包括：
    划分模块，用于将电视显示屏按照预设的方式划分为多个区域；
    确定模块，用于根据所述区域相对于电视显示屏灯条的位置确定所述区域内红光与蓝光的调整系数；
    调整模块，用于根据所述区域内红光与蓝光的调整系数对所述区域内的初始图像进行调整，并将各个区域内调整后的图像在电视显示屏进行显示。
  8. 根据权利要求7所述的电视色偏调整装置，其特征在于，所述划分模块用于：
    将电视显示屏按照与电视显示屏灯条平行的方向划分为N个区域，所述N为正整数。
  9. 根据权利要求8所述的电视色偏调整装置，其特征在于，所述划分模块用于：
    将电视显示屏按照与电视显示屏灯条平行的方向划分为N个大小相同的区域；或者，将电视显示屏按照与电视显示屏灯条平行的方向划分为N个大小不同的区域。
  10. 根据权利要求7所述的电视色偏调整装置，其特征在于，所述确定模块具体包括：
    第一确定模块，用于确定各个区域内红光的增益补偿系数与蓝光的增益补偿系数；
    第二确定模块，用于根据所述区域相对于电视显示屏灯条的位置和所述区域内红光与蓝光的增益补偿系数分别确定所述区域内红光与蓝光的调整系数，其中，所述区域相对于电视显示屏灯条越远，则所述区域内红光的调整系数越小，蓝光的调整系数越大。
  11. 根据权利要求10所述的电视色偏调整装置，其特征在于，所述第二确定模块具体用于：
    通过
    Figure PCTCN2016112466-appb-100003
    得到第n个区域内红光的调整系数CR(n)；
    通过
    Figure PCTCN2016112466-appb-100004
    得到第n个区域内蓝光的调整系数CB(n)；
    其中，kR表示红光穿过电视玻璃导光板所需要的全反射次数，kB表示蓝光穿过电视玻璃导光板所需要的全反射次数，a表示各个区域内预设的颜色增益值，b表示相对于电视显示屏灯条的第n个区域内红光的增益补偿系数，c表示相对于电视显示屏灯条的第n个区域内蓝光的增益补偿系数，N表示电视显示屏划分的区域个数，所述n为正整数且n≤N。
  12. 根据权利要求11所述的电视色偏调整装置，其特征在于，所述调整模块用于：
    通过：
    AR(n)＝BR(n)*[1+CR(n)]；
    AG(n)＝BG(n)*1；
    AB(n)＝BB(n)*[1+CB(n)]；
    得到第n个区域内调整后的图像信息AR(n)、AG(n)、AB(n)；其中，BR(n)、BG(n)、BB(n)表示第n个区域内的初始图像对应的红(R)、绿(G)、蓝(B)三种颜色通道。
PCT/CN2016/112466 2016-10-13 2016-12-27 电视色偏调整方法及装置 WO2018068404A1 (zh)

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