CN102150197A - Image correction data generation system, image correction data generation method, image correction data generation program, and image correction circuit - Google Patents
Image correction data generation system, image correction data generation method, image correction data generation program, and image correction circuit Download PDFInfo
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- 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
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- 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
- G09G3/006—Electronic inspection or testing of displays and display drivers, e.g. of LED or LCD displays
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- H04N17/02—Diagnosis, testing or measuring for television systems or their details for colour television signals
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- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N17/00—Diagnosis, testing or measuring for television systems or their details
- H04N17/04—Diagnosis, testing or measuring for television systems or their details for receivers
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- 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
- G09G2320/0233—Improving the luminance or brightness uniformity across the screen
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- 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
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- G09G2320/00—Control of display operating conditions
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- G09G2320/0285—Improving the quality of display appearance using tables for spatial correction of display data
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- G09G2320/00—Control of display operating conditions
- G09G2320/06—Adjustment of display parameters
- G09G2320/0693—Calibration of display systems
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G2360/00—Aspects of the architecture of display systems
- G09G2360/14—Detecting light within display terminals, e.g. using a single or a plurality of photosensors
- G09G2360/145—Detecting light within display terminals, e.g. using a single or a plurality of photosensors the light originating from the display screen
- G09G2360/147—Detecting light within display terminals, e.g. using a single or a plurality of photosensors the light originating from the display screen the originated light output being determined for each pixel
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- 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
- G09G3/36—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 using liquid crystals
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Abstract
An image correction data generation system includes a signal generation unit, an imaging unit, and a control unit. The signal generation unit supplies a signal for outputting an image, to a display panel. The imaging unit captures an output image displayed on the display panel. The control unit is connected to the signal generation unit and the imaging unit. The control unit has an instruction unit, an image acquisition unit, a bandpass filter unit, and a corrected data generation unit. The instruction unit outputs to the signal generation unit, a supply instruction of a signal value common to the entire display panel. The image acquisition unit acquires output image data from the imaging unit. The bandpass filter unit executes a bandpass filtering on the output image data so as to calculate bandpass data. The data generation unit outputs an image correction table corresponding to the bandpass data.
Description
Technical field
The present invention relates to be used for effectively suppress to show uneven image correction data generation system, image correction data generation method, image correction data generator program and image calibrating circuit.
Background technology
Current, the production line of displays such as liquid crystal panel is built into can realize unified quality.But even on this production line, deviation can take place in each display during fabrication.So,, carried out various researchs (for example, referring to patent documentation 1) in order to export better pictures by adjusting display.In the technology of this patent documentation 1 record,, the image quality of adjusting the object display is adjusted to image quality near target (or benchmark) display by the image quality adjusting gear.For this reason, the control part of image quality adjusting gear possesses the data store that is used to store target indicator and adjusts the performance data of object display.Control part calculates gamma white balance transform data according to the data of data store, and this transform data is saved in the gamma adjuster.And control part uses the data and the gamma white balance transform data of data store, calculates color management and sets distributed data (profile data), and this distributed data is kept in the color management adjuster.
And, on display, take place to show uneven sometimes.This inequality that shows produces because of the brightness disproportionation of a plurality of pixels.Show and do not include brightness disproportionation and irregular colour.And brightness disproportionation and irregular colour only produce one of them sometimes, and two kinds produce simultaneously sometimes.So, a kind of projector has been proposed, can in the irregular colour of correcting liquid crystal panel, remove the brightness disproportionation that integrated optics system causes, obtain high-quality projects images image quality (for example, referring to patent documentation 2).In the technology of in this patent documentation 2, putting down in writing, the common irregular colour that uses in by existing method is measured the irregular colour that obtains with video camera and is proofreaied and correct on the LUT data, adds that the brightness disproportionation mensuration of use known shadow is proofreaied and correct the LUT data with the brightness disproportionation that video camera generates.Thus, according to the illumination level of input signal of video signal, the two-dimensional color inequality and the brightness disproportionation of the horizontal/of correcting liquid crystal panel generate the uneven LUT of correction of demonstration data.Use the uneven correction data of the demonstration of storing among the LUT in the liquid crystal projection apparatus, two-dimensional color inequality and brightness disproportionation are proofreaied and correct, be transformed into uniform image.
Patent documentation 1: No. 4109702 communique of Jap.P.
Patent documentation 2: TOHKEMY 2006-153914 communique
Import to display under the situation of image (all pixels be same value) on complete plane, export the image on complete plane in theory.But in fact, there is fine difference in the brightness between the pixel, and these differences cause showing uneven.On liquid crystal panel, produce this reason of inequality that shows and be the inequality of liquid crystal cell thick (cell gap), the distribution of brightness of backlight.
And, when adopting unified approach to remove the demonstration inequality, also can go wrong.That is, the inequality of the liquid crystal that causes when liquid crystal cell is thick itself is below 1%, and at the most only about 5%, still, the limb darkening of backlight can reach about 30% for a long time.Proofreading and correct this demonstration under the uneven situation,, can not proofread and correct brightlyer, so the data value of complete white image can only be proofreaied and correct to minus side for the full data value of (100% grey) image in vain.Therefore, having carried out being used for unified removing under the situation that shows uneven correction, be subjected to the influence of the limb darkening of liquid crystal panel, near the brightness the central part descends.That is, when decline was many, the brightness meeting of panel descended 30%.
And under the situation that each display is proofreaied and correct, hope can be proofreaied and correct as far as possible effectively.
Summary of the invention
The objective of the invention is to, a kind of be used for effectively suppressing to show uneven image correction data generation system, image correction data generation method, image correction data generator program and image calibrating circuit are provided.
In order to achieve the above object, the image correction data generation system that relates to first mode of the present invention possesses signal generating unit, image pickup part and control part.The signal that described signal generating unit will be used for output image supplies to display panel.Described image pickup part is taken the output image that is presented on the described display panel.Described control part is connected with described image pickup part with described signal generating unit.Described control part possesses instruction unit, image obtaining section, bandpass filtering portion and correction data generating unit.Described instruction unit is to the supply indication of whole common signal value of described signal generating unit output display panel.Described image obtaining section obtains output image data from described image pickup part.Described bandpass filtering portion calculates the logical data of band by described output image data being carried out bandpass filtering.Described data generating unit output and the logical corresponding image rectification table of data of described band.
Preferably, described instruction unit is to the supply indication of whole common signal value of each gray scale output display panel.Described image obtaining section obtains output image data to each gray scale.Described correction data generating unit is to each gray scale output image table of corrections.
The image correction data generation method that relates to the 2nd mode of the present invention is used the image correction data generation system that possesses signal generating unit, image pickup part and control part, generates image correction data.The signal that described signal generating unit will be used for output image supplies to display panel.Described image pickup part is taken the output image that is presented on the described display panel.Described control part is connected with described image pickup part with described signal generating unit.Described control part is carried out following steps: the supply indication of exporting whole common signal value of display panel to described signal generating unit; Obtain output image data from described image pickup part; Described output image data is carried out bandpass filtering, thereby calculate the logical data of band; And output and the logical corresponding image rectification table of data of described band.
The image calibrating circuit that relates to the 3rd mode of the present invention has been stored the image rectification table that is used to adjust the picture signal that supplies to display panel.Described image rectification table generates accordingly with the logical data of band.By the output image data that shows according to whole the common signal value that supplies to described display panel is carried out bandpass filtering, lead to data thereby obtain this band.To supplying to the picture signal of described display panel, be used to proofread and correct the signal of output image according to described image rectification table output, thereby adjust the output image of described display panel.
Preferably, to the described image rectification table of each Grey Scale Recording.Coordinate and signal value according to picture signal carry out linear interpolation, thereby generate the signal of adjusting output image.
According to the invention that the of the present invention the 1st and the 2nd mode relates to, control part is to the supply indication of whole common signal value of signal generating unit output display panel.And control part is obtained output image data from image pickup part.Then, control part carries out bandpass filtering to output image data, thereby calculates the logical data of band, output and the logical corresponding image rectification table of data of band.Thus, can generate the image rectification table according to the image that photographs.At this, by carrying out bandpass filtering, thereby do not show slowly that to changing uneven, trickle demonstration inequality proofreaies and correct.Therefore, can get rid of the influence of limb darkening, and can be simply and realize showing uneven minimizing effectively.
According to preferred implementation, control part is obtained output image data to each gray scale, to each gray scale output image table of corrections to the supply indication of whole common signal value of each gray scale output display panel.Thus, even, also can correctly generate the image rectification table showing under the uneven situation about changing according to gray scale.
According to the invention of the 3rd mode of the present invention, storage is used to adjust the image rectification table of the picture signal that supplies to display panel in the image calibrating circuit.Image calibrating circuit is obtained the output image data that shows according to whole of display panel common signal value.Image calibrating circuit carries out bandpass filtering to view data, thereby calculates the logical data of band.The logical data of image rectification table and this band generate accordingly.Image calibrating circuit is to supplying to the picture signal of display panel, and according to the image rectification table, output is used to proofread and correct the signal of output image.Thus, can improve the image quality of the display panel that has generated the demonstration inequality.
According to preferred embodiment, to each Grey Scale Recording image rectification table.Image calibrating circuit carries out linear interpolation according to the coordinate of picture signal and signal value to the signal that is used to proofread and correct output image, generates the signal that is used to adjust output image.Thus, even showing under the uneven situation about changing, still can improve the image quality of display panel according to gray scale.
Description of drawings
Fig. 1 is the figure that expression relates to the image correction data generation system of one embodiment of the present invention.
Fig. 2 is illustrated in the correction data of carrying out in the system of Fig. 1 to generate the figure that handles.
Fig. 3 is the figure that is illustrated in the correcting circuit that is provided with in the system of Fig. 1.
Description of reference numerals
10 liquid crystal panels; 20 image quality adjusting gears; 21 control parts; 211 process management unit; 212 bandpass filtering unit; 30 video cameras; 40 test pattern generating apparatus; 50 correcting circuits; 51ROM.
Embodiment
Below, image correction data generation system of the present invention, image correction data generation method, image correction data generator program and image calibrating circuit are described.Explanation improves the situation of image quality by the demonstration inequality (brightness disproportionation) of the display panel of inhibition adjustment object in the present embodiment.In addition, in the present embodiment,, use liquid crystal panel 10 as the display panel of adjusting object.
This liquid crystal panel 10 comprises by the liquid crystal of transparency electrode clamping (liquid crystal portion) with from the backlight of back side illuminaton liquid crystal.So, the image of the limb darkening of the inequality of the overlapping liquid crystal portion of output and backlight on liquid crystal panel 10.
In order to improve the image quality of liquid crystal panel 10, as shown in Figure 3, use correcting circuit 50.This correcting circuit 50 possesses the nonvolatile memory (ROM 51) that is used for the document image table of corrections.
Record the relevant data (image rectification table) of corrected value among this ROM 51 with the signal value that is used to adjust the picture signal of being imported.In the present embodiment, to the plane distribution of each benchmark Grey Scale Recording corrected value.
And as shown in Figure 1, the image correction data generation system that is used to calculate this corrected value comprises image quality adjusting gear 20, video camera 30, test pattern generating apparatus 40 and ROM write device 60.
At this, take as 30 pairs of images that are presented on the liquid crystal panel 10 of video camera of image pickup part, output image data is supplied to image quality adjusting gear 20.In the present embodiment, as video camera 30, use the B that possesses the CCD element.
According to indication, supply with test mode signals as the test pattern generating apparatus 40 of signal generating unit to liquid crystal panel 10 from image quality adjusting gear 20.In the present embodiment, the rgb signal of 8bit is supplied to whole of liquid crystal panel 10.
ROM write device 60 will be written to ROM 51 from the correcting value data of image quality adjusting gear 20 outputs.
Image quality adjusting gear 20 is terminals of carrying out the processing that is used for calculated correction value, and this corrected value is used to adjust the image quality of liquid crystal panel 10.
This image quality adjusting gear 20 possesses control part 21.This control part 21 has CPU, RAM and ROM etc., carries out processing described later (indication step, the image that comprises the supply indication of output common signal value obtained the processing that step, bandpass filtering step, correction data generate step etc.).By carrying out this table of corrections generator program, as shown in Figure 1, control part 21 plays a role as process management portion 211, bandpass filtering portion 212.
Process management portion 211 plays a role as instruction unit, image obtaining section and correction data generating unit.Specifically, process management portion 211 carries out following processing, that is, the signal that is input to liquid crystal panel 10 is controlled, and according to the output image data that is shown on the liquid crystal panel 10, calculated correction value.
Bandpass filtering portion 212 generates the logical data of band of having deleted mild variation composition and fine variation composition from the output image data that video camera 30 is obtained.That is, bandpass filtering portion 212 only isolates the bandpass filtering of intermediate frequency.
(correction data generates and handles)
Then, use Fig. 2, illustrate that correction data generates processing.
At this, each predetermined gray scale is generated the image rectification table that is used to suppress to show inequality.Specifically, the corrected value that each predefined gray scale (benchmark gray scale) is calculated on the liquid crystal panel 10 distributes.In the present embodiment, in the signal value of representing with 8bit, use predetermined number (for example, 10 grades) benchmark gray scale changes 1 grade ground of adjustment object gray scale 1 grade corresponding with the benchmark gray scale successively, each is adjusted the object gray scale generate the image rectification table.
At first, in step S 1, the control part 21 of image quality adjusting gear 20 is carried out test pattern and is generated processing.Specifically, the process management portion 211 of control part 21 is to test pattern generating apparatus 40 indication output rgb signals, and this rgb signal is used to adjust the output of object image gray.At this, in adjusting the object gray scale, whole of liquid crystal panel 10 used R signal value, G signal value, rgb signal (common signal value) that the B signal value is identical.According to this indication, test pattern generating apparatus 40 will supply to liquid crystal panel 10 as the rgb signal of the 8bit that adjusts the object gray scale.
And liquid crystal panel 10 is according to the rgb signal input, and the gray image of object gray scale is adjusted in output.Under this situation, there is the liquid crystal cell thickness ununiformity on the liquid crystal or under the situation that has brightness disproportionation on the backlight, on liquid crystal panel 10, producing these uneven overlapping demonstration inequalities that causes.At this, 30 pairs in video camera is overlapping shows that uneven image takes.
And in step S2, the control part 21 of image quality adjusting gear 20 is carried out the processing that obtains of output image.Specifically, the process management portion 211 of control part 21 obtains from video camera 30 liquid crystal panel 10 is taken the output image data that obtains.And it is the Luminance Distribution of unit that process management portion 211 converts this output image data to constitute with 8 * 8 pixels module, supplies to bandpass filtering portion 212.
Then, in step S3, the control part 21 of image quality adjusting gear 20 is carried out bandpass filtering treatment.Specifically, 212 pairs of output image datas of obtaining of the bandpass filtering portion of control part 21 carry out bandpass filtering, thereby calculate the logical data of band.This is with the interior Luminance Distribution of the logical data and the face of liquid crystal panel 10 corresponding, is made of the distribution of having removed radio-frequency component and low-frequency component.And the logical data of the band that bandpass filtering portion 212 will generate supply to process management portion 211.
Then, in step S4, the control part 21 of image quality adjusting gear 20 is carried out correction value and is handled.Specifically, process management portion 211 generations of control part 21 will be with the image rectification table of logical data reversal.In addition, process management portion 211 is mapped the identifier of image rectification table and the benchmark gray scale that is used for determining using in the image quality adjustment and stores in the storer temporarily.
And the control part 21 of image quality adjusting gear 20 is adjusted the object gray scale to next and is repeated above-mentioned processing.
Under the situation of whole benchmark gray scales having been finished correction data calculating, the control part 21 of image quality adjusting gear 20 is carried out ROM and is write processing in step S5.Specifically, the image rectification table that will temporarily store of the process management portion 211 of control part 21 is written to ROM 51.Thus, in ROM 51,, the module position in the face of liquid crystal panel 10 (xy coordinate) is write down the distribution of corrected value at each benchmark gray scale.
(image display process)
And the ROM 51 that generates accordingly with this liquid crystal panel 10 is gone in correcting circuit 50 by group.This correcting circuit is the circuit that is used to adjust the picture signal that supplies to liquid crystal panel 10.Specifically, the picture signal (rgb signal) that is used for display image on liquid crystal panel 10 is fed into liquid crystal panel 10 and correcting circuit 50.
As shown in Figure 3, except ROM 51, also possess the interpolation portion 52 of selection and addition portion 53 in the correcting circuit 50.
Select interpolation portion 52 to the image rectification table of each rgb signal reference record in ROM 51.At this, selection interpolation portion 52 obtains the corrected value (2 * 4=8) by 4 module grid points decisions of the location of pixels (xy coordinate) that surrounds picture signal in two benchmark image gray table of corrections adjacent with each rgb signal value of picture signal.And, select interpolation portion 52 according to the signal value of picture signal and the distance between each grid point, obtained corrected value is carried out linear interpolation.
And addition portion 53 will be added on the picture signal that is transfused to from the corrected value of selecting interpolation portion 52 to obtain.Liquid crystal panel 10 is obtained this and has been carried out the picture signal of proofreading and correct, display image.
According to present embodiment, can access following advantage.
In the present embodiment, correcting circuit 50 possesses ROM 51, selects interpolation portion 52 and addition portion 53.Record among this ROM 51 by the uneven image rectification table that generates of the demonstration in the image that photographs by video camera 30.Show that inequality is to produce because of the brightness of each pixel is different with ideal value, so, just can show inequality thereby remove according to the input picture value of this each pixel of offset correction as long as determine the brightness of each pixel and the deviation between the ideal value in advance.
In the present embodiment, among the ROM 51 each benchmark Grey Scale Recording there is the image rectification table.Even same pixel shows that uneven generation is also non-constant with respect to input level.For example following variation can take place, promptly show the pixel of 19% grey when having imported 20% grey, show 51% grey in 50% grey, show 83% grey in 80% grey.Among the ROM 51 each benchmark Grey Scale Recording there is the image rectification table, so can carry out the correction corresponding with the signal value of each pixel.
In the present embodiment, use and carried out the distribution of bandpass filtering, generate the image rectification table.Thus, change, do not proofread and correct for brightness slowly.The inequality of liquid crystal self is about 5% below 1% in the time of many only, with respect to this, when the limb darkening of backlight more for a long time, be about 30%.If when the state of not removing low-frequency component (low by) is proofreaied and correct complete white (100% grey) image down, be subjected to the influence of limb darkening, cause near the brightness decline the central part of liquid crystal panel 10.
In this case, human eye is difficult to detect the mild light quantity variation of picture integral body.Therefore, carry out timing under the state that ends not hanging down, the brightness that human eye can only be experienced liquid crystal panel 10 descends.
And human eye is difficult to detect very tiny demonstration inequality (radio-frequency component).In addition, very tiny demonstration inequality is carried out timing, need correctly obtain the relevant of the location of pixels measured between image and the liquid crystal,, also can produce on the contrary and show inequality even little deviation is only arranged.Therefore, by removing radio-frequency component (high by), thus can be simply and generate the image rectification table effectively.
And above-mentioned embodiment can carry out following change.
In the above-described embodiment, using B to carry out brightness disproportionation proofreaies and correct.The demonstration inequality that suppresses object is not limited to brightness, and above-mentioned embodiment can also be applied to the correction of irregular colour.Under the situation that brightness disproportionation and irregular colour both sides are proofreaied and correct, use the optical filter of RGB 3 looks, obtain output image by image pickup part respectively.And, each image is carried out above-mentioned bandpass filtering treatment (step S3), correction value processing (step S4), thus calculated correction value.And, make 3 kinds of image rectification tables that the R signal is used, the G signal is used, the B signal is used, record among the ROM 51.Thus, can proofread and correct, thereby suppress irregular colour the RGB data value of input picture.
In the above-described embodiment, each the signal value uniform images that makes RGB is estimated the correcting luminance inequality.Under the situation of correction of color inequality, also can not use optical filter, but monochromatic R signal, G signal, B signal are supplied to liquid crystal panel 10 respectively independently, handle (step S4) and generate the image rectification table by the obtain processing (step S2), bandpass filtering treatment (step S3), correction value of output image.
In the above-described embodiment, apply the present invention to the inhibition of the demonstration inequality of liquid crystal panel 10, but the display panel of adjustment object is not limited thereto.Image rectification of the present invention can also be applied in the image output devices such as plasma display (PDP), projector.
In the above-described embodiment, each liquid crystal panel 10 execution test patterns generation processing (step S1)～ROM that adjust object is write processing (step S5).Be alternative in this, also can carry out test pattern and generate processing (step S1)～correction value processing (step S4), thereby calculate the representative corrected value the representative display panel of adjusting object.And, in this modification, can also make having write the ROM that represents corrected value, group is gone in correcting circuit 50.
For example, in representing liquid crystal panel, under the situation that the brightness disproportionation that light source (backlight) is caused (showing uneven) is proofreaied and correct, can use above-mentioned modification.In liquid crystal panel, reduce the lamp number of backlight, or remove diffusion sheet, or shorten under the situation of the distance between scatter plate and the lamp, can produce the brightness disproportionation that causes by backlight.By in this liquid crystal panel that has produced the brightness disproportionation that causes by backlight, using above-mentioned modification, can suppress to show uneven.Its result, the quantity by cutting down lamp etc. reduce the number of components that constitutes display panel, thereby can make high-quality display panel when realizing that cost reduces.And, to cut down under the quantity situation of lamp, the light quantity of backlight reduces, but by removing optical sheet etc., or the distance between lamp and the scatter plate of furthering, thereby can keep uniform brightness when adjusting light quantity.
In addition, for this representative corrected value, also can use image rectification of the present invention respectively to each panel.And, each corrected value is carried out ROM write processing.Under this situation, the demonstration inequality that the characteristic according to each display panel produces can be suppressed, more high-quality display panel can be made.That is, correction is roughly proofreaied and correct by representative image and is carried out, and further each display panel is carried out inching then, thereby can effectively carry out image rectification.
Claims (5)
1. image correction data generation system, it possesses: the signal generating unit, its signal that will be used for output image supplies to display panel; Image pickup part, it is taken the output image that is presented on the described display panel; And control part, it is connected with described image pickup part with described signal generating unit, wherein,
Described control part possesses:
Instruction unit, it is to the supply indication of whole common signal value of described signal generating unit output display panel;
The image obtaining section, it obtains output image data from described image pickup part;
Bandpass filtering portion, it carries out bandpass filtering to described output image data, thereby calculates the logical data of band; And
The correction data generating unit, its output and the logical corresponding image rectification table of data of described band.
2. image correction data generation system according to claim 1, wherein,
Described instruction unit is to the supply indication of whole common signal value of each gray scale output display panel;
Described image obtaining section obtains output image data to each gray scale,
Described correction data generating unit is to each gray scale output image table of corrections.
3. an image correction data generation method uses the image correction data generation system to generate image correction data, and this image correction data generation system possesses: the signal generating unit, and its signal that will be used for output image supplies to display panel; Image pickup part, it is taken the output image that is presented on the described display panel; And control part, it is connected with described image pickup part with described signal generating unit, wherein,
Described control part is carried out following steps:
Export the supply indication of whole common signal value of display panel to described signal generating unit;
Obtain output image data from described image pickup part;
Described output image data is carried out bandpass filtering, thereby calculate the logical data of band; And
Output and the logical corresponding image rectification table of data of described band.
4. image calibrating circuit, it has stored the image rectification table that is used to adjust the picture signal that supplies to display panel, wherein,
Described image rectification table generates accordingly with the logical data of band, and the output image data that shows by whole the common signal value that basis is supplied to described display panel carries out bandpass filtering, thereby obtains the logical data of this band,
To supplying to the picture signal of described display panel, be used to proofread and correct the signal of output image according to described image rectification table output, thereby adjust the output image of described display panel.
5. image calibrating circuit according to claim 4, wherein,
To the described image rectification table of each Grey Scale Recording,
Coordinate and signal value according to picture signal carry out linear interpolation, thereby generate the signal that is used to adjust output image.
Priority Applications (1)
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| Publication number | Publication date |
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| WO2010013753A1 (en) | 2010-02-04 |
| CN102150197B (en) | 2014-08-20 |
| TWI485695B (en) | 2015-05-21 |
| CN104217666B (en) | 2017-01-11 |
| KR101165026B1 (en) | 2012-07-13 |
| KR20110002474A (en) | 2011-01-07 |
| JP2010057149A (en) | 2010-03-11 |
| CN104217666A (en) | 2014-12-17 |
| TW201239870A (en) | 2012-10-01 |
| JP4681033B2 (en) | 2011-05-11 |
| TWI520126B (en) | 2016-02-01 |
| TW201011731A (en) | 2010-03-16 |
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