CN105513543B - Image processing method and device based on large-size screen monitors LCM - Google Patents
Image processing method and device based on large-size screen monitors LCM Download PDFInfo
- Publication number
- CN105513543B CN105513543B CN201610058592.1A CN201610058592A CN105513543B CN 105513543 B CN105513543 B CN 105513543B CN 201610058592 A CN201610058592 A CN 201610058592A CN 105513543 B CN105513543 B CN 105513543B
- Authority
- CN
- China
- Prior art keywords
- block
- image data
- described image
- data sub
- sub
- Prior art date
- Legal status (The legal status 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 status listed.)
- Active
Links
Classifications
-
- 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
Landscapes
- Engineering & Computer Science (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)
- Liquid Crystal Display Device Control (AREA)
Abstract
The embodiment of the present invention provides a kind of image processing method and device based on large-size screen monitors LCM, and this method includes：Image to be displayed data are determined as multiple and different video data blocks, wherein, video data block is based on backlight subarea division border and is split；Video data block is determined as multiple images data sub-block；Determine the luminance component and chromatic component of described image data sub-block；The difference of the backlight value of described image data block according to where the backlight value of the luminance component of image data sub-block and described image data sub-block and described image data sub-block determines the compensation brightness component of described image data sub-block；According to the chromatic component of the compensation brightness component of described image data sub-block and described image data sub-block, the display image data of described image data sub-block is determined.The finer image for having adjusted each child partition on image to be displayed so that the image to be displayed image quality of output is more excellent.
Description
Technical field
The present invention relates to image processing techniques more particularly to a kind of image processing methods and device based on large-size screen monitors LCM.
Background technology
Liquid crystal display (Liquid Crystal Display, abbreviation LCD) has extra long life, power saving, low operation electricity
The features such as pressure, high color rendering index (CRI), low-temperature operation, reaction speed are fast, environmental protection, thus as mainstream display screen, apply in all kinds of electricity
In sub- product.In addition, with the development of light emitting diode (Light Emitting Diode, abbreviation LED) technology, LED conducts
The backlight of liquid crystal display has become a kind of mainstream.
In the prior art, backlight is carried out subregion by dynamic backlight control system, and the LED of each subregion individually controls realization aobvious
Show the dynamic backlight control of device.
But in the prior art, it can only realize whole bright or dark in each subregion of backlight, each subregion is caused to correspond to
The image quality effect of display is bad.
The content of the invention
The present invention provides a kind of image processing method and device based on large-size screen monitors LCM, for solving available liquid crystal display
In each subregion correspond to display image quality effect it is bad the problem of.
First aspect present invention provides a kind of image processing method based on large-size screen monitors LCM, including：
Image to be displayed data are determined as multiple and different video data blocks, wherein, described image data block is based on backlight
Subregion division border is split；
Described image data block is determined as multiple images data sub-block；
Determine the luminance component and chromatic component of described image data sub-block；
According to the luminance component of described image data sub-block and the backlight value and described image of described image data sub-block
The difference of the backlight value of described image data block where data sub-block determines the compensation brightness component of described image data sub-block；
According to the compensation brightness component of described image data sub-block and the chromatic component of described image data sub-block, institute is determined
State the display image data of image data sub-block.
Second aspect of the present invention provides a kind of image processing apparatus based on large-size screen monitors LCM, including：
Split module, for image to be displayed data to be determined as multiple and different video data blocks, wherein, described image number
Backlight subarea division border is based on according to block to be split；
Son segmentation module, for described image data block to be determined as multiple images data sub-block；
Acquisition module, for determining the luminance component of described image data sub-block and chromatic component；
Compensating module, for the luminance component according to described image data sub-block and the back of the body of described image data sub-block
Light value and the difference of the backlight value of described image data block where described image data sub-block, determine described image data sub-block
Compensation brightness component；
Determining module, for the compensation brightness component according to described image data sub-block and the color of described image data sub-block
Component is spent, determines the display image data of described image data sub-block.
Third aspect present invention provides a kind of liquid crystal display, including：Picture processing chip and liquid crystal display；
Described image processing chip, for image to be displayed data to be determined as multiple and different video data blocks, wherein, institute
Backlight subarea division border of the video data block based on the liquid crystal display is stated to be split；
Described image data block is determined as multiple images data sub-block；
Determine the luminance component and chromatic component of described image data sub-block；
According to the luminance component of described image data sub-block and the backlight value and described image of described image data sub-block
The difference of the backlight value of described image data block where data sub-block determines the compensation brightness component of described image data sub-block；
According to the compensation brightness component of described image data sub-block and the chromatic component of described image data sub-block, institute is determined
State the display image data of image data sub-block.
In image processing method and device provided by the invention based on large-size screen monitors LCM, image to be displayed data are determined as
Above-mentioned video data block is determined as multiple images data sub-block, and then determines above-mentioned picture number by multiple and different video data blocks
According to the luminance component and chromatic component of sub-block, according to the luminance component of above-mentioned image data sub-block and the image data sub-block
Backlight value and the image data sub-block where video data block difference, determine the compensation brightness point of each image data sub-block
Amount, according to the compensation brightness component of above-mentioned image data sub-block and the chromatic component of image data sub-block, determines above-mentioned picture number
According to the display image data of sub-block, the luminance component according to each image data sub-block, each image data sub-block are realized
Backlight value and the backlight value of place video data block adjust the brightness value of each image data sub-block, i.e., divide image data
Luminance Analysis is carried out for multiple images data block, and in analytic process, each video data block is sub-divided into multiple images number
According to sub-block, and the backlight value of movement images data sub-block and the backlight value difference of video data block, it determines each to scheme according to difference
As the compensation brightness component of data sub-block, the display image data of image data sub-block is then determined again, it is so finer
Have adjusted the brightness of each image data sub-block on image to be displayed so that the image quality of output is more excellent.
Description of the drawings
It in order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
There is attached drawing needed in technology description to be briefly described, it should be apparent that, the accompanying drawings in the following description is this hair
Some bright embodiments, for those of ordinary skill in the art, without having to pay creative labor, can be with
Other attached drawings are obtained according to these attached drawings.
Fig. 1 is the flow diagram of the image processing method embodiment one provided by the invention based on large-size screen monitors LCM；
Fig. 2 is that a kind of image divides schematic diagram in the image processing method provided by the invention based on large-size screen monitors LCM；
Fig. 3 is that another image divides schematic diagram in the image processing method provided by the invention based on large-size screen monitors LCM；
Fig. 4 is luminance transformation curve synoptic diagram in the image processing method provided by the invention based on large-size screen monitors LCM；
Fig. 5 is that another image divides schematic diagram in the image processing method provided by the invention based on large-size screen monitors LCM；
Fig. 6 is the flow diagram of the image processing method embodiment two provided by the invention based on large-size screen monitors LCM；
Fig. 7 is the structure diagram of the image processing apparatus embodiment one provided by the invention based on large-size screen monitors LCM；
Fig. 8 is the structure diagram of the image processing apparatus embodiment two provided by the invention based on large-size screen monitors LCM；
Fig. 9 is the structure diagram of liquid crystal display embodiment one provided by the invention.
Specific embodiment
Fig. 1 is the image processing method hardware architecture diagram provided by the invention based on large-size screen monitors LCM, wherein, this method
Various liquid crystal display devices are mainly can be applied to, which includes：Image processing part, liquid crystal display part, backlight
Processing unit and backlight drive portion, liquid crystal display part include：Time schedule controller and liquid crystal panel.
The image processing part receives the image data of input, on the one hand, the image processing part is according to preset liquid crystal panel
Image data is carried out format transformation by specification, is exported into liquid crystal display part time schedule controller (TCON), is given birth to through time schedule controller
Timing control signal and data-signal are produced to drive liquid crystal panel.On the other hand, the image processing part is each according to independent driving
Image data, is accordingly divided into multiple images data block by multiple backlight subareas that backlight is divided, and extracts each picture number
The backlight value of the correspondence backlight subarea is converted into according to gray-scale intensity information in block, which is exported to backlight processing unit, it should
Backlight value is converted to backlight control signal by backlight processing unit, and backlight in the backlight subarea is controlled to control backlight drive portion
Brightness, wherein, if the gray-scale intensity values of the video data block are higher, drive back light source brightness in the corresponding backlight subarea
Higher, vice versa.
Fig. 2 be the image processing method embodiment one provided by the invention based on large-size screen monitors LCM flow diagram, this method
Executive agent can be image processing section of liquid crystal display device etc., which can be LCD display modules
(LCD Module, abbreviation LCM), this is not restricted.This method includes：
S101, image to be displayed data are determined as multiple and different video data blocks.Wherein, video data block is based on backlight
Subregion division border is split.
The backlight of liquid crystal display can be divided into multiple backlight subareas, according to the division of backlight subarea, can also incite somebody to action
Image to be displayed data are divided into multiple images data block, and each video data block is a video data block, image data
The number of block is identical with the number of backlight subarea, and video data block is corresponded with backlight subarea, such as above-mentioned backlight quilt
It is divided into M rows N row, then image to be displayed is also divided into M rows N row.
The liquid crystal display can be the liquid crystal display of the equipment such as LCD TV, computer.
S102, above-mentioned video data block is determined as multiple images data sub-block.
Video data block after above-mentioned division is further divided into multiple images data sub-block, so as to subsequently more smart
Thin adjustment brightness.
S103, the luminance component and chromatic component for determining above-mentioned image data sub-block.
After the input of image to be displayed data, processor can first extract primaries (RGB) image of image to be displayed data,
And then RGB image is subjected to YC separation, i.e., luminance component and chromatic component are obtained respectively, in the follow-up process to brightness point
Amount is adjusted, and keeps chromatic component constant, to avoid chromatic distortion.
Specifically, there are many ways to YC separation, such as：RGB image is converted to the image of YUV codings, wherein YUV
It is a kind of colour coding method, " Y " identifies grayscale value and " U " and " V " identifies colourity；It is compiled alternatively, RGB image is converted to HIS
The multispectral image of 3 wave bands of RGB image color space is transformed into 3 amounts of HIS space, i.e. tone by the image of code
(H), brightness (I), saturation degree (S)；Alternatively, RGB image is converted to YCbCr, wherein " Y " refers to luminance component, Cb refers to blueness
Chromatic component, and Cr refers to red chrominance component.But it is not limited in these types of method.
S104, according to the luminance component of above-mentioned image data sub-block and the backlight value of the image data sub-block and the figure
The difference of the backlight value of video data block as where data sub-block determines the compensation brightness component of the image data sub-block.
It should be noted that calculate the back of the body of the backlight value for obtaining each video data block and each image data sub-block
Light value, Ke Yishi calculate the backlight value for obtaining above-mentioned video data block using formula BL=amax+bavg, using formula
BLi=amaxi+b·avgiCalculate the backlight value for obtaining image data sub-block.BLiRepresent i-th of image in video data block
The backlight value of data sub-block, the backlight value of video data block, max represent the image where BL represents i-th of image data sub-block
Maximum brightness value in data block, avg represent the average brightness value of the video data block, maxiRepresent above-mentioned i-th of image data
Maximum brightness value in sub-block, avgiRepresent the average brightness value of i-th of image data sub-block, a, b are default constant.0 ＜ i
≤ N and i are positive integer, and N is the number of image data sub-block in each video data block, and N is the positive integer more than 0.
Certainly, the backlight value of video data block and the backlight value of image data sub-block are calculated there are many method, not with
Above-mentioned example is limited.
The backlight value of image data sub-block refers to extract backlight value in the image data according to image data sub-block, can characterize
All pixels overall brightness in the image data sub-block；The backlight value of video data block refers to the picture number of whole image data block
According to middle extraction backlight value, all pixels overall brightness in the video data block is also characterized.Wherein, the backlight value of video data block is used
Back light source brightness is by the average ash of the video data block in the brightness for driving backlight in the correspondence backlight subarea, the backlight subarea
Rank brightness size determines.
Specifically, according to the backlight value of the luminance component of above-mentioned image data sub-block and the image data sub-block with being somebody's turn to do
The difference of the backlight value of video data block where image data sub-block determines the compensation brightness component of each image data sub-block.
Specific implementation is：
It, can be by preset two-dimensional data table mode, such as in a kind of embodiment：Two-dimensional data table includes：Image data
The luminance component of sub-block and the luminance component of video data block are tabled look-up by two dimension and determine the benefit of the image data sub-block
Repay luminance component.Wherein, in the preset two-dimensional data table, its backlight value can be characterized by the luminance component of image data sub-block,
And the luminance component of video data block can characterize the backlight value of the backlight subarea, the compensation brightness component for tabling look-up definite has been considered
The diversity factor and compensation way of the backlight value of the image data sub-block and the backlight value of the video data block.
In another embodiment, three-dimensional data table can also be, which includes：Image data sub-block it is bright
The backlight value of component and the image data sub-block and the backlight value of image data sub-block place video data block are spent, is passed through
Three-dimensional lookup table determines the compensation brightness component of the image data sub-block, i.e., the three-dimensional compensation brightness for determining the image data sub-block
Component.
In another embodiment, the backlight value of the image data sub-block and video data block where the image data sub-block
The difference of backlight value can also be determined using algorithmic approach, wherein, according to algorithm determine the backlight value of image data sub-block with should
The difference value of the backlight value of video data block, and determine that the compensation brightness of the image data sub-block is divided by preset data table mode
Amount, wherein, which reflects luminance component compensation magnitude.
Wherein, which can be, according to the backlight of the luminance component of image data sub-block and the image data sub-block
The ratio of value and the backlight value of video data block where the image data sub-block determines the compensation brightness point of image data sub-block
Amount.I.e. by the ratio of the backlight value of video data block where the backlight value of image data sub-block and the image data sub-block, come
Embody the difference of the backlight value and the backlight value of video data block where the image data sub-block of image data sub-block.
Certainly, it is not limited with above-described embodiment, the backlight value and the image data of image data sub-block can also be passed through
The difference of the backlight value of video data block where sub-block, to embody the backlight value of image data sub-block and the image data sub-block institute
In the difference of the backlight value of video data block；Alternatively, the backlight value of movement images data sub-block and image data sub-block place
The size of the backlight value of video data block, to embody the backlight value of image data sub-block and picture number where the image data sub-block
Difference according to the backlight value of block etc..
The preset data table reflects luminance component compensation magnitude, including：
Show where if the backlight value of image data sub-block is more than the image data sub-block during backlight value of video data block
The brightness of image of the image data sub-block is brighter compared to whole image data block, and the backlight illumination of the backlight subarea is used and is somebody's turn to do
The average gray-scale intensity of video data block determines that the backlight illumination of the backlight subarea is then required less than the image data sub-block
Backlight illumination, therefore, the image data sub-block need luminance component in corresponding raising image data, inclined to make up backlight illumination
The low influence to showing brightness of image.Then the compensation brightness component of the image data sub-block after adjusting is more than current image date
The luminance component of sub-block.
Show where if the backlight value of image data sub-block is equal to the image data sub-block during backlight value of video data block
The brightness of image of the image data sub-block is suitable with the backlight illumination of whole image data block；The backlight illumination of the backlight subarea with
Backlight illumination needed for the image data sub-block is suitable, can not do luminance component adjustment.I.e. in this case, image data sub-block
Compensation brightness component be equal to current image date sub-block luminance component.
Show where if the backlight value of image data sub-block is less than the image data sub-block during backlight value of video data block
The brightness of image of the image data sub-block is dark compared to the backlight illumination of whole image data block, and the backlight of the backlight subarea is bright
Degree is more than the required backlight illumination of the image data sub-block, and therefore, which needs corresponding reduction picture number
According to middle luminance component, to make up the higher influence to showing brightness of image of backlight illumination.Then the image data sub-block after adjusting
Compensation brightness component be less than current image date sub-block luminance component.
In another embodiment, by backlight value and the image data that the image data sub-block is determined in above-described embodiment
The difference value of the backlight value of block, then according to definite difference value, the brightness for determining image data sub-block according to pre-defined algorithm is mended
Repay component.Can be specifically：According to formula s=crδDetermine the compensation brightness component of image data sub-block, wherein, δ=BLi/
BL, δ represent luminance transformation exponential (the i.e. backlight value of image data sub-block and the back of the body of video data block where the image data sub-block
The ratio of light value), BLiThe backlight value of i-th of image data sub-block in video data block, 0 ＜ i≤N and i are represented as positive integer, N
For the number of image data sub-block in each video data block, N is the positive integer more than 0, and BL represents i-th of image data sub-block
The backlight value of place video data block, r represent the current luminance component of i-th of image data sub-block, and s represents described i-th
The compensation brightness component of a image data sub-block, c are default constant.It should be noted that the figure under each video data block
As data sub-block is all independent numbering, do not intersect with other video data blocks.
Certainly, determine image data sub-block compensation brightness component can be above-mentioned exponentiation algorithm, can also be linear ratio
Example algorithm.
S105, according to the compensation brightness component of above-mentioned image data sub-block and the chromatic component of image data sub-block, determine
The display image data of above-mentioned image data sub-block.
After the compensation brightness component for obtaining image data sub-block, chromatic component that can be further before basis closes together
The image data of Cheng Xin, as display image data, which is will be in the image that liquid crystal display is shown
Data.
It should be noted that before display, RGB image is reconverted into after above-mentioned compensation brightness component and chromatic component combination,
Then display is exported again.
In the present embodiment, image to be displayed data are determined as multiple and different video data blocks, by above-mentioned video data block
It is determined as multiple images data sub-block, and then determines the luminance component and chromatic component of above-mentioned image data sub-block, according to above-mentioned
The backlight value of the luminance component of image data sub-block and the image data sub-block and image data where the image data sub-block
The difference of block determines the compensation brightness component of each image data sub-block, according to the compensation brightness of above-mentioned image data sub-block point
Amount and the chromatic component of image data sub-block determine the display image data of above-mentioned image data sub-block, realize according to each
The backlight value adjustment of the luminance component of image data sub-block, the backlight value of each image data sub-block and place video data block
Image data is divided into multiple images data block to carry out Luminance Analysis, and divided by the brightness value of each image data sub-block
During analysis, each video data block is sub-divided into multiple images data sub-block, and the backlight value of movement images data sub-block and
The backlight value difference of video data block determines the compensation brightness component of each image data sub-block according to difference, then determines again
The display image data of image data sub-block, so finer has adjusted each image data sub-block on image to be displayed
Brightness so that the image quality of output is more excellent.
Fig. 3 is that a kind of image divides schematic diagram in the image processing method provided by the invention based on large-size screen monitors LCM, and Fig. 4 is
Another image division schematic diagram in image processing method provided by the invention based on large-size screen monitors LCM.
For the division of video data block can there are many modes, such as side-light type division or straight-down negative division.
As shown in figure 3, divided for side-light type, wherein, Fig. 3 show an image data after image to be displayed division
Block, the video data block are again broken down into N*1 image data sub-block using side-light type subregion.
As shown in figure 4, divided for straight-down negative, wherein, Fig. 4 show an image data after image to be displayed division
Block, the video data block are again broken down into m*n image data sub-block, m*n=N using straight-down negative division, m, n be more than 0 and
Positive integer less than or equal to N.N is the positive integer more than 0.
Image data sub-block under each video data block can be numbered, number i be more than 0 and be less than or
Positive integer equal to N.
Fig. 5 is luminance transformation curve synoptic diagram in the image processing method provided by the invention based on large-size screen monitors LCM.In Fig. 5
Abscissa represents the luminance component of input picture, and ordinate represents output luminance component, which can be embodied by grayscale,
Based on above-mentioned formula：
1) when δ is less than 1, represent that the backlight value of i-th of image data sub-block in corresponding video data block is less than place figure
As the backlight value of data block, the image of i-th of image data sub-block needs to turn down brightness, that is, the luminance component exported, which is less than, works as
Preceding luminance component, the conversion curve of luminance component are referred to the curve C in Fig. 5；
2) when δ is equal to 1, the brightness of i-th of image data sub-block and backlight subarea phase in corresponding video data block are represented
Meet, the luminance component of output is equal to current luminance component, and without adjustment, the conversion curve of luminance component is referred to figure
Curve A in 5；
3) when δ is more than 1, the backlight value of i-th of image data sub-block is higher than place in representing in corresponding video data block
The backlight value of video data block, the image of i-th of image data sub-block need to heighten brightness, that is, the luminance component exported is more than
Current luminance component, the conversion curve of luminance component are referred to the curve B in Fig. 5.
Fig. 6 is that another image divides schematic diagram, Fig. 6 in the image processing method provided by the invention based on large-size screen monitors LCM
By taking side-light type divides as an example, show that a video data block after side-light type division is divided into 7 image data sub-blocks, i.e. N
=7, the backlight value of image data sub-block 4 is relatively low compared to the backlight value of place video data block, i.e. BL4＜ BL；Image data
The backlight value of sub-block 7 is higher compared to the backlight value of place video data block, i.e. BL7＞ BL；Other image data sub-blocks it is bright
Degree component is consistent with whole image data block.Therefore, when exporting image to be displayed, the luminance component of image data sub-block 4 according to
Curve C is adjusted in Fig. 5, and the luminance component of image data sub-block 7 adjusts according to curve B in Fig. 5, other image data sub-blocks it is bright
Degree component is adjusted according to curve A in Fig. 5.
Optionally, it is above-mentioned to be divided according to the compensation brightness component of above-mentioned image data sub-block and the colourity of image data sub-block
It measures, after the display image data for determining above-mentioned image data sub-block, can also include：According to the aobvious of above-mentioned image data sub-block
Show image data, obtain the display image data of above-mentioned image to be displayed data；And by the display figure of the image to be displayed data
As data carry out image smoothing filtering technique.
Specifically, above-mentioned compensation brightness component and chromatic component obtain the display picture number of image data sub-block after combining
According to can obtain the display image data of entire image to be displayed data, and then can solve to wait to show by image smoothing filtering technique
Show the border issue between image data sub-block and between video data block in the display image data of image data, obtain
After filtered display image data, also further to convert acquisition RGB image and export display again.
Fig. 7 be the image processing apparatus embodiment one provided by the invention based on large-size screen monitors LCM structure diagram, such as Fig. 7
Shown, which includes：Split module 701, sub- segmentation module 702, acquisition module 703, compensating module 704 and determining module
705, wherein：
Split module 701, for image to be displayed data to be determined as multiple and different video data blocks, wherein, the figure
It is split as data block is based on backlight subarea division border；
Son segmentation module 702, for described image data block to be determined as multiple images data sub-block；
Acquisition module 703, for determining the luminance component of described image data sub-block and chromatic component；
Compensating module 704, for the luminance component according to described image data sub-block and described image data sub-block
The difference of backlight value and the backlight value of described image data block where described image data sub-block, determines described image data sub-block
Compensation brightness component；
Determining module 705, for the compensation brightness component according to described image data sub-block and described image data sub-block
Chromatic component, determine the display image data of described image data sub-block.
In the present embodiment, image to be displayed data are determined as multiple and different video data blocks, by above-mentioned video data block
It is determined as multiple images data sub-block, and then determines the luminance component and chromatic component of above-mentioned image data sub-block, according to above-mentioned
The backlight value of the luminance component of image data sub-block and the image data sub-block and image data where the image data sub-block
The difference of block determines the compensation brightness component of each image data sub-block, according to the compensation brightness of above-mentioned image data sub-block point
Amount and the chromatic component of image data sub-block determine the display image data of above-mentioned image data sub-block, realize according to each
The backlight value adjustment of the luminance component of image data sub-block, the backlight value of each image data sub-block and place video data block
Image data is divided into multiple images data block to carry out Luminance Analysis, and divided by the brightness value of each image data sub-block
During analysis, each video data block is sub-divided into multiple images data sub-block, and the backlight value of movement images data sub-block and
The backlight value difference of video data block determines the compensation brightness component of each image data sub-block according to difference, then determines again
The display image data of image data sub-block, so finer has adjusted each image data sub-block on image to be displayed
Brightness so that the image quality of output is more excellent.
Further, compensating module 704 are more than described image number specifically for the backlight value in described image data sub-block
According to described image data block where sub-block backlight value when, determine described image data sub-block compensation brightness component be more than it is described
The luminance component of image data sub-block；Alternatively,
It is equal to the back of the body of described image data block where described image data sub-block in the backlight value of described image data sub-block
During light value, determine that the compensation brightness component of described image data sub-block is equal to the luminance component of described image data sub-block；Alternatively,
It is less than the back of the body of described image data block where described image data sub-block in the backlight value of described image data sub-block
During light value, the compensation brightness component of the definite image data sub-block is less than the luminance component of described image data sub-block.
Optionally, compensating module 704, specifically for the luminance component according to described image data sub-block and the figure
As the ratio of the backlight value and the backlight value of described image data block where described image data sub-block of data sub-block, determine described
The compensation brightness component of image data sub-block.But be not limited thereto, preceding method embodiment is specifically referred to, herein not
It repeats again.
Further, compensating module 704, specifically for using formula s=crδIt determines to scheme in described image data block
As the compensation brightness component of data sub-block, wherein, δ=BLi/ BL, BLiRepresent i-th of image data in described image data block
The backlight value of block, 0 ＜ i≤N and i are positive integer, and N is the number of image data sub-block in each video data block, and N is more than 0
Positive integer, the backlight value of video data block where BL represents i-th of image data sub-block, r represents i-th of image
The luminance component of data sub-block, s represent the compensation brightness component of i-th of image data sub-block, and c is constant.
Fig. 8 be the image processing apparatus embodiment two provided by the invention based on large-size screen monitors LCM structure diagram, such as Fig. 8
Shown, on the basis of Fig. 7, which further includes：Synthesis module 801 and filter module 802, wherein：
Synthesis module 801 according to the display image data of described image data sub-block, obtains the image to be displayed data
Display image data.
The display image data of the image to be displayed data is carried out image smoothing filtering technique by filter module 802.
The device is for performing preceding method embodiment, and implementing principle and technical effect are similar, and details are not described herein.
Fig. 9 is the structure diagram of liquid crystal display embodiment one provided by the invention, as shown in figure 9, the liquid crystal
Show that equipment includes：Picture processing chip 901 and liquid crystal display 902, wherein, picture processing chip 901 and liquid crystal display 902
It is connected by bus 903.
Picture processing chip 901, for image to be displayed data to be determined as multiple and different video data blocks, wherein, institute
Backlight subarea division border of the video data block based on liquid crystal display 902 is stated to be split；Described image data block is determined
For multiple images data sub-block；Determine the luminance component and chromatic component of described image data sub-block；According to described image data
The luminance component of sub-block and the backlight value of described image data sub-block and described image data where described image data sub-block
The difference of the backlight value of block determines the compensation brightness component of described image data sub-block；According to the benefit of described image data sub-block
The chromatic component of luminance component and described image data sub-block is repaid, determines the display image data of described image data sub-block.
It should be noted that the liquid crystal display of the present embodiment can also include memory, for storing program and figure
As data message；Specifically, program can include program code, and said program code includes computer-managed instruction.Memory
Random access memory (random access memory, abbreviation RAM) may be included, it is also possible to further include non-volatile memories
Device (non-volatile memory), for example, at least a magnetic disk storage.
The liquid crystal display of the present embodiment can also include：Host processor chip is deposited for calling and performing memory
The program of storage, control other component perform the technical solution of embodiment of the method shown in Fig. 1-Fig. 6, and the liquid crystal display of the present embodiment is set
Standby, implementing principle and technical effect are similar with the embodiment of the method shown in Fig. 1-Fig. 6, can refer to the method shown in Fig. 1-Fig. 6
Embodiment, details are not described herein.
In several embodiments provided by the present invention, it should be understood that disclosed apparatus and method can pass through it
Its mode is realized.For example, the apparatus embodiments described above are merely exemplary, for example, the division of the unit, only
Only a kind of division of logic function can have other dividing mode in actual implementation, such as multiple units or component can be tied
It closes or is desirably integrated into another system or some features can be ignored or does not perform.It is another, it is shown or discussed
Mutual coupling, direct-coupling or communication connection can be the INDIRECT COUPLING or logical by some interfaces, device or unit
Letter connection can be electrical, machinery or other forms.
The unit illustrated as separating component may or may not be physically separate, be shown as unit
The component shown may or may not be physical location, you can be located at a place or can also be distributed to multiple
In network element.Some or all of unit therein can be selected to realize the mesh of this embodiment scheme according to the actual needs
's.
In addition, each functional unit in each embodiment of the present invention can be integrated in a processing unit, it can also
That unit is individually physically present, can also two or more units integrate in a unit.Above-mentioned integrated list
The form that hardware had both may be employed in member is realized, can also be realized in the form of hardware adds SFU software functional unit.
The above-mentioned integrated unit realized in the form of SFU software functional unit, can be stored in one and computer-readable deposit
In storage media.Above-mentioned SFU software functional unit is stored in a storage medium, is used including some instructions so that a computer
Equipment (can be personal computer, server or the network equipment etc.) or processor (English：Processor this hair) is performed
The part steps of bright each embodiment the method.And foregoing storage medium includes：USB flash disk, mobile hard disk, read-only memory
(English：Read-Only Memory, referred to as：ROM), random access memory (English：Random Access Memory, letter
Claim：RAM), the various media that can store program code such as magnetic disc or CD.
Finally it should be noted that：The above embodiments are only used to illustrate the technical solution of the present invention., rather than its limitations；To the greatest extent
Pipe is described in detail the present invention with reference to foregoing embodiments, it will be understood by those of ordinary skill in the art that：Its according to
Can so modify to the technical solution recorded in foregoing embodiments either to which part or all technical characteristic into
Row equivalent substitution；And these modifications or replacement, the essence of appropriate technical solution is not made to depart from various embodiments of the present invention technology
The scope of scheme.
Claims (11)
1. a kind of image processing method based on large-size screen monitors LCM, which is characterized in that including：
Image to be displayed data are determined as multiple and different video data blocks, wherein, described image data block is based on backlight subarea
Division border is split；
Described image data block is determined as multiple images data sub-block；
Determine the luminance component and chromatic component of described image data sub-block；
According to the backlight value of the luminance component of described image data sub-block and described image data sub-block and described image data
The difference of the backlight value of described image data block where sub-block determines the compensation brightness component of described image data sub-block；
According to the compensation brightness component of described image data sub-block and the chromatic component of described image data sub-block, the figure is determined
As the display image data of data sub-block.
2. according to the method described in claim 1, it is characterized in that, according to the luminance component of described image data sub-block and
The difference of the backlight value of described image data sub-block and the backlight value of described image data block where described image data sub-block, really
Determine the compensation brightness component of described image data sub-block, including：
If the backlight value of described image data block where the backlight value of described image data sub-block is more than described image data sub-block,
Then determine that the compensation brightness component of described image data sub-block is more than the luminance component of described image data sub-block；Alternatively,
If the backlight value of described image data block where the backlight value of described image data sub-block is equal to described image data sub-block,
Then determine that the compensation brightness component of described image data sub-block is equal to the luminance component of described image data sub-block；Alternatively,
If the backlight value of described image data block where the backlight value of described image data sub-block is less than described image data sub-block,
Then determine that the compensation brightness component of described image data sub-block is less than the luminance component of described image data sub-block.
3. according to the method described in claim 1, it is characterized in that, according to the luminance component of described image data sub-block and
The difference of the backlight value of described image data sub-block and the backlight value of described image data block where described image data sub-block, really
Determine the compensation brightness component of described image data sub-block, including：
According to the backlight value of the luminance component of described image data sub-block and described image data sub-block and described image data
The ratio of the backlight value of described image data block where sub-block determines the compensation brightness component of described image data sub-block.
4. according to the method described in claim 3, it is characterized in that, the luminance component according to described image data sub-block,
And the ratio of the backlight value of described image data sub-block and the backlight value of described image data block where described image data sub-block
Value determines the compensation brightness component of described image data sub-block, including：
Using formula s=crδDetermine the compensation brightness component of image data sub-block in described image data block, wherein, δ=
BLi/ BL, BLiThe backlight value of i-th of image data sub-block in expression described image data block, 0<I≤N and i are positive integer, and N is
The number of image data sub-block in each video data block, N are the positive integer more than 0, and BL represents i-th of image data
The backlight value of video data block where block, r represent the luminance component of i-th of image data sub-block, and s is represented described i-th
The compensation brightness component of image data sub-block, c are constant.
5. the according to the method described in claim 1, it is characterized in that, compensation brightness according to described image data sub-block point
Amount and the chromatic component of described image data sub-block after the display image data for determining described image data sub-block, further include：
According to the display image data of described image data sub-block, the display image data of the image to be displayed data is obtained；
The display image data of the image to be displayed data is subjected to image smoothing filtering technique.
6. a kind of image processing apparatus based on large-size screen monitors LCM, which is characterized in that including：
Split module, for image to be displayed data to be determined as multiple and different video data blocks, wherein, described image data block
It is split based on backlight subarea division border；
Son segmentation module, for described image data block to be determined as multiple images data sub-block；
Acquisition module, for determining the luminance component of described image data sub-block and chromatic component；
Compensating module, for the luminance component according to described image data sub-block and the backlight value of described image data sub-block
With the difference of the backlight value of described image data block where described image data sub-block, the compensation of described image data sub-block is determined
Luminance component；
Determining module, for the colourity of the compensation brightness component according to described image data sub-block and described image data sub-block point
Amount determines the display image data of described image data sub-block.
7. device according to claim 6, which is characterized in that the compensating module, specifically in described image data
Where the backlight value of sub-block is more than described image data sub-block during the backlight value of described image data block, described image data are determined
The compensation brightness component of sub-block is more than the luminance component of described image data sub-block；Alternatively,
It is equal to the backlight value of described image data block where described image data sub-block in the backlight value of described image data sub-block
When, determine that the compensation brightness component of described image data sub-block is equal to the luminance component of described image data sub-block；Alternatively,
It is less than the backlight value of described image data block where described image data sub-block in the backlight value of described image data sub-block
When, determine that the compensation brightness component of described image data sub-block is less than the luminance component of described image data sub-block.
8. device according to claim 6, which is characterized in that the compensating module, specifically for according to described image number
According to the luminance component of sub-block and the backlight value of described image data sub-block and described image number where described image data sub-block
According to the ratio of the backlight value of block, the compensation brightness component of described image data sub-block is determined.
9. device according to claim 6, which is characterized in that the compensating module, specifically for using formula s=crδ
Determine the compensation brightness component of image data sub-block in described image data block, wherein, δ=BLi/ BL, BLiRepresent described image
The backlight value of i-th of image data sub-block in data block, 0<I≤N and i are positive integer, and N is picture number in each video data block
According to the number of sub-block, N is the positive integer more than 0, the backlight of video data block where BL represents i-th of image data sub-block
Value, r represent the luminance component of i-th of image data sub-block, and s represents the compensation brightness of i-th of image data sub-block
Component, c are constant.
10. device according to claim 6, which is characterized in that described device further includes：Synthesis module and filter module；
The synthesis module for the display image data according to described image data sub-block, obtains the image to be displayed number
According to display image data；
The filter module, for the display image data of the image to be displayed data to be carried out image smoothing filtering technique.
11. a kind of liquid crystal display, which is characterized in that including：Picture processing chip and liquid crystal display；
Described image processing chip, for image to be displayed data to be determined as multiple and different video data blocks, wherein, the figure
As backlight subarea division border of the data block based on the liquid crystal display is split；
Described image data block is determined as multiple images data sub-block；
Determine the luminance component and chromatic component of described image data sub-block；
According to the backlight value of the luminance component of described image data sub-block and described image data sub-block and described image data
The difference of the backlight value of described image data block where sub-block determines the compensation brightness component of described image data sub-block；
According to the compensation brightness component of described image data sub-block and the chromatic component of described image data sub-block, the figure is determined
As the display image data of data sub-block.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610058592.1A CN105513543B (en) | 2016-01-28 | 2016-01-28 | Image processing method and device based on large-size screen monitors LCM |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610058592.1A CN105513543B (en) | 2016-01-28 | 2016-01-28 | Image processing method and device based on large-size screen monitors LCM |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105513543A CN105513543A (en) | 2016-04-20 |
| CN105513543B true CN105513543B (en) | 2018-05-18 |
Family
ID=55721475
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610058592.1A Active CN105513543B (en) | 2016-01-28 | 2016-01-28 | Image processing method and device based on large-size screen monitors LCM |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105513543B (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107492366B (en) * | 2017-07-11 | 2019-11-19 | 浙江大华技术股份有限公司 | A kind of display of image information, acquisition method and its device |
| CN108389552B (en) * | 2018-03-19 | 2019-08-27 | 京东方科技集团股份有限公司 | Backlight illumination processing method and system, back light brightness regulating method, storage medium |
| CN109036260A (en) * | 2018-08-31 | 2018-12-18 | 北京集创北方科技股份有限公司 | Data processing method, display driver chip and display equipment |
| CN109545153A (en) * | 2018-11-23 | 2019-03-29 | 深圳Tcl新技术有限公司 | Luminance regulating method, television set and the storage medium of liquid crystal display |
| CN110674076B (en) * | 2019-09-23 | 2020-12-18 | 胡佳威 | Command-triggered target analysis platform, method and storage medium |
| CN112037709A (en) * | 2020-09-02 | 2020-12-04 | 福建省海佳集团股份有限公司 | LED display screen chroma correction system |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101814271A (en) * | 2009-02-20 | 2010-08-25 | 三星电子株式会社 | Back light apparatus and have the liquid crystal display of this back light apparatus |
| CN102402947A (en) * | 2010-09-17 | 2012-04-04 | Tcl集团股份有限公司 | Dynamic zoning method of side backlight zoning control system |
| CN103854613A (en) * | 2014-02-14 | 2014-06-11 | 北京京东方显示技术有限公司 | Light source control module, back light module, drive method of back light module, and display device |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4628770B2 (en) * | 2004-02-09 | 2011-02-09 | 株式会社日立製作所 | Image display device having illumination device and image display method |
| JP2009063694A (en) * | 2007-09-05 | 2009-03-26 | Seiko Epson Corp | Image processing apparatus, image display device, image processing method, and program |
| JP6080339B2 (en) * | 2011-04-01 | 2017-02-15 | キヤノン株式会社 | Image display apparatus, control method therefor, and image display system |
-
2016
- 2016-01-28 CN CN201610058592.1A patent/CN105513543B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101814271A (en) * | 2009-02-20 | 2010-08-25 | 三星电子株式会社 | Back light apparatus and have the liquid crystal display of this back light apparatus |
| CN102402947A (en) * | 2010-09-17 | 2012-04-04 | Tcl集团股份有限公司 | Dynamic zoning method of side backlight zoning control system |
| CN103854613A (en) * | 2014-02-14 | 2014-06-11 | 北京京东方显示技术有限公司 | Light source control module, back light module, drive method of back light module, and display device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105513543A (en) | 2016-04-20 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105513543B (en) | Image processing method and device based on large-size screen monitors LCM | |
| CN105139809B (en) | Liquid crystal display brightness control method and device and liquid crystal display | |
| CN105161064B (en) | Liquid crystal display brightness control method and device and liquid crystal display | |
| CN105185353B (en) | Liquid crystal display brightness control method and device and liquid crystal display | |
| CN105632421B (en) | Back light source brightness control method, Apparatus and liquid crystal display equipment | |
| CN105185328B (en) | Liquid crystal display brightness control method and device and liquid crystal display | |
| KR101330396B1 (en) | Display Device And Contrast Enhancement Method Thereof | |
| KR100970260B1 (en) | Adaptive backlight control dampening to reduce flicker | |
| CN104981861B (en) | Signal conversion device and method | |
| CN106409240A (en) | Liquid crystal display brightness control method, apparatus and the liquid crystal display device | |
| CN105895035B (en) | Overdrive circuit for display device | |
| CN108702514B (en) | High dynamic range image processing method and device | |
| CN104637455B (en) | Adjustment using the dimmed backlight in part to the image data of LCD | |
| KR20130098354A (en) | System and method for providing control data for dynamically adjusting lighting and adjusting video pixel data for a display to substantially maintain image display quality while reducing power consumption | |
| JP6433887B2 (en) | Electronic display device and driving method thereof | |
| CN107103886A (en) | A kind of dynamic backlight control display methods and device | |
| EP2126787A1 (en) | Multiple modulator displays and related methods | |
| CN102651201B (en) | Dynamic control method of edge light LED (Light Emitting Diode) backlight | |
| JP2015523593A5 (en) | ||
| KR20160003145A (en) | Rgbw dynamic color fidelity control | |
| CN103177702B (en) | There is display and the method thereof of GTG expanded function | |
| CN106652925A (en) | Image processing method and liquid crystal display | |
| CN102427517A (en) | Dynamic contrast adjustment method, dynamic contrast adjustment device and liquid crystal display television | |
| CN106228939A (en) | LCD TV driving method, device and LCD TV drive circuit board | |
| CN111785222B (en) | Contrast lifting algorithm and double-panel display device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |