CN101026777B - Display device dynamic image colour excursion detecting system and detecting method - Google Patents
Display device dynamic image colour excursion detecting system and detecting method Download PDFInfo
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Abstract
The invention includes following means in order to convert image shot to chroma space coordinates to generate a quantized test result: image picking up means to take dynamic image in display to be tested by using track mode for simulating human eyes; means of positioning image including adjusting magnification ratio of image, positioning screens borderline, and tracking accurate positioning etc.;color characterization means such as chroma correction in order to carry out measurement in an even chroma space, and to load a vision model; image analysis means for analyzing image brightness, and chroma deflection.
Description
Technical field
The present invention relates to a kind of detection system and detection method that is applied to detect display device dynamic image colour excursion, particularly a kind of mechanism of emulation human eye of utilizing is taken the function that dynamic image, color character conversion and color offset quantize, and the System and method for of the colour cast detection of quantification with rationally correct analysis display device dynamic image quality is provided.
Background technology
Along with flat-panel screens (as LCD (LCD) or plasma scope etc.) is widely used on TV, computer monitor, mobile phone or the various household electrical appliances, the quality of its display pannel also more needs to pay attention to, as color, contrast, reaction time, brightness etc.Known technology has promptly proposed the detection method for the display pannel quality, can be when playing dynamic image as detection LCD monitor because the delay in liquid crystal reaction time cause the edge that ghost phenomena is arranged, or when being detected on the display color picture in the phenomenon of image edge generation color offset.
The known detection technique that is used for aforementioned display device measures standard (Flat Panel DisplayMeasurements Standard just like the flat-panel screens that the VESA of international organization (Video ElectronicsStandards Association) is formulated, FPDM), wherein disclose remaining picture of a kind of display and the method for measurement (305-2 of warm-up time in the 305-2 chapters and sections, Residual Image and Warm-Up-Time Measurement) only measures at the most basic liquid crystal reaction time of display, the mode that wherein measures ghost or color offset phenomenon is to utilize an optical sensing subassembly (photodiode) to measure the liquid crystal reaction that fixed image changes, as measuring picture with optical sensing subassembly by the complete black complete white reaction time that changes to, and leucismus arrives the complete black reaction time entirely, but its shortcoming is to describe the sensation that human eye is watched.
Known technology such as WIPO (World Intellectual Property Organization) WO2004109634 number disclose a kind of method and system (METHOD AND SYSTEM FOR EVALUATING MOVING IMAGE QUALITY OF DISPLAYS) of estimating the dynamic image display quality with the WO2005004498 patent, device as shown in Figure 1, the picture of one CCD camera 3 by mirror 2 photographed screen 5 wherein arranged, and produce test signal by a signal of video signal generator 9.Mirror 2 connects a rotating shaft, by driving governor 7 control rotations, image is through the rotary reflection of mirror 2, take by CCD camera 3 again, its signal of video signal is received by computer system 6, computer system 6 more is coupled to signal of video signal generator 9, and consequent testing image signal carries out the display quality evaluation with the image of being taken by CCD camera 3.This case is utilized minute surface to rotate to reach the apery ocular pursuit, calculate the fuzzy degree of image boundary in the screen again, and obtain first and follow the trail of the accuracy that image and second static image are proofreaied and correct tracking by constantly repeating to follow the trail of to take, but so the step of trouble has reduced accuracy, and this case is described in the state of black-and-white image obscurity boundary and fails the actual situation that color partly is offset that is described in.
Another known technology such as WIPO WO2004075567 patent disclose measurement system/method (MEASUREMENT SYSTEM FOR EVALUATING MOVING IMAGE QUALITYOF DISPLAYS) of estimating dynamic image quality, this case is to utilize a photodetector (Photodetector) to detect the dynamic image position, the right obscurity boundary that still is confined to black-and-white image is judged, and fail to assess the quality of chromatic image, and aspect color and brightness transition the accuracy deficiency, and there is no the information of colourity (chroma).
Yoshi Enami is arranged again, the method that the dynamic quality that utilizes the follow shot system to carry out chromatic image that Keiko Kitagishi and Koichi Oka (Otsuka ElectronicsCo.LTD) are proposed measures, be with the movable image in the colour camera shooting display, and to wherein because move the fringe parametrization (parameterized) cause, classified, and be converted into xy colourity (Chromaticity) space.
Embodiment shown in Fig. 2 A measures experimental result, it serves as reasons white during to black change color, the picture of taking from colour camera is at the brightness (Luminance) and the time plot of xy chrominance space, wherein be converted into three by red R, green G, the blue B value of taking earlier and swash value (Tristimulus Values) X, Y and Z, promptly react energy by reflected by objects rate light source, be converted to again chromaticity coordinate (x, y).Shown in Fig. 2 A, the rise time (rise timing) that brightness changed when red R, green G, blue B switched in black and white is identical, and also no change of chromaticity coordinate x and y value (horizontal line); Fig. 2 B then shows another experimental result, and wherein chromaticity coordinate x and y value show that the curve regions 20 of a projection and brightness change the skew that produces, and promptly represent the zone of colored blur in the display.Yet because human eye vision is not a uniform color space, so the measurement that utilizes the xy chrominance space to express can't be described the notion of aberration distance.
Deliver at LCD as Korea S Samsung (Samsung Electronics) and to move the technology (Evaluation of Motion Artifacts and EvolvingCompensation Techniques for LCD Monitors) of assessment and compensation of false shadow, the false shadow (artifact) that moves produces residual false shadow when moving for picture, quality for liquid crystal display has critical influence, this piece paper is classified at various false shadows, and analyzed, judge that indivedual the back compensates by software unit, so wherein only calculate the mass-tone aberration, fail to describe the fuzzy performance of border color for the judgement that shows flaw.
Above-mentioned known measurement mode measures the LCD reaction time with optical diode optical sensors such as (photodiode), but because of there is no the detected parameters of introducing human eye, so its testing result can't really reflect people's ophthalmic reaction.
Summary of the invention
The object of the present invention is to provide a kind of detection system and method that is applied to detect display device dynamic image colour excursion, the function that comprise that dynamic image measures that emulation human eye mechanism is taken, full color characterization conversion and color offset quantizes is to provide the analysis display device dynamic image quality that display manufacturer can be rationally correct.All color datas of method provided by the present invention record dynamic image fuzzy region, and plot visualized graphs, the distribution situation of seeing color locus that the user can intuition, but not only calculate the dichromatism aberration.In addition, more obtain color image in dynamic capture mode, and carry out the color character conversion, so can solve different colour gamuts of different displays and normative reference problem with the measuring value of standard colorimetric measurement equipment at every cover display.
The present invention has following advantage:
1, utilizes the colour camera capture, exempt the shortcoming of manual detection.
2, utilize tracing type system emulation human eye to watch dynamic image mechanism to take the dynamic image colour excursion degree, and be quantized into parameter, with canonical reference as LCD usefulness.
3, because every group display equipment colour gamut performance difference can't compare, therefore carry out the processing of dynamic image color character, the color parameter after can obtaining proofreading and correct.
4, the record dynamic image produces all information of colour cast zone, and pointwise is drawn on the chrominance space of appointment, can observe the phenomenon and the data of color offset by this color locus intuition.
Display device dynamic image colour excursion detecting system of the present invention comprises with emulation human eye trace mode, utilizes the colour phhotograpy device to take the image capture detecting unit of the dynamic image in the display to be measured again; Carry out the image positioning units such as enlargement ratio adjustment, screen border location and tracking accuracy location of image; Dynamically chromaticity correction is carried out in capture, makes the color character unit that measures in a uniform chrominance space; Load a vision mode at last, the image analysing computer unit of the image brilliance that is taken, the analysis of chroma offset.
Above-mentioned color character unit more carries out standard colorimetric by a colourity device that carries out chromaticity correction to be proofreaied and correct, and image acquisition unit is to control a colour phhotograpy device with a rotating control assembly to adjust shooting angle, to take.
The disclosed display device dynamic image colour excursion detecting system of the present invention is to produce dynamic pattern with an image processing module, with photographic unit dynamic pattern is taken again, receive the image of taking with the color character module, the circumstances in which people get things ready for a trip of going forward side by side degree is proofreaied and correct and is carried out the conversion of color characterization, afterwards with an image analysing computer module with video conversion in a colourity space, the hue error value that produce to quantize thus.
A kind of display device dynamic image colour excursion detection method of the present invention comprises earlier with image processing module generation test pattern, then take by photographic unit, shooting process is controlled in the camera tracking shooting display in imitation human eye vision mode and is gone up pattern, also obtain the chromatic value of standard by the colourity device, capture the Pixel Information of test pattern again, and carry out chromaticity correction via the colourity device, afterwards, obtain the color character result, embodiment produces a transition matrix or conversion is tabled look-up, carrying out the image analysing computer step again, is the coordinate of chrominance space with captured movable image information translation, produces a hue error value that quantizes at last.
The shooting step of above-mentioned test pattern more comprises correcting captured mechanism earlier, and detects the test pattern that moves at the beginning of taking, and utilizes the colour phhotograpy device to carry out follow shot at last, and revise or compensate above-mentioned photographic unit when taking.
And the preferred embodiment of above-mentioned color character step is to utilize the average brightness that measures test pattern to produce conversion to table look-up, and draws translation operation again.
The calculation procedure of above-mentioned average hue error value comprises selects a colourity space earlier, introduce this translation operation afterwards, the pattern-information of conversion shooting is a colourity space coordinates again, calculates this average hue error value by the gap between a desired reference curve in the chrominance space and a chroma curve that measures.
Description of drawings
Fig. 1 shows the evaluating apparatus schematic diagram for the located by prior art dynamic image;
Fig. 2 A and Fig. 2 B are known technology xy chrominance space curve chart;
Fig. 3 is the detection system Organization Chart of display device dynamic image colour excursion of the present invention;
Fig. 4 A is the detection system device schematic diagram of display device dynamic image colour excursion of the present invention;
Fig. 4 B is the running embodiment schematic diagram of camera;
Fig. 5 is a color offset detection method flow chart of the present invention;
Fig. 6 is the flow chart of filming image step in the detection method of the present invention;
Fig. 7 is the flow chart of color character step in the detection method of the present invention;
Fig. 8 is the flow chart of image analysing computer step in the detection method of the present invention;
Fig. 9 is the enlargement ratio adjustment unit embodiment schematic diagram in the image positioning unit of photographic unit of the present invention;
Figure 10 follows the trail of accuracy positioning unit embodiment schematic diagram for the dynamic image in the image positioning unit of photographic unit of the present invention;
Figure 11 A is depicted as color change schematic diagram in the display;
Figure 11 B figure is a chrominance space coordinate schematic diagram.
Video camera 3 mirrors 2
Screen 5 driving governors 7
Computer system 6 signal of video signal generators 9
Image analysing computer module 46 image processing modules 47
Fuzzy region 101 first color regions 111
Second color region, 112 desired reference chroma curves 113
The chroma curve 114 that measures
Embodiment
The present invention is a kind of detection system and method that is applied to detect display device dynamic image colour excursion, comprise dynamic image and measure the function that the shooting of emulation human eye mechanism, full color characterization conversion and color offset quantize, be with emulation human eye trace mode filmed image, and load a vision mode, and analyze dynamic image quality, enable to present the judgement approaching, so that the analysis display device dynamic image quality that display manufacturer can be rationally correct to be provided with human eye.
Wherein (1) is considered human eye by emulation mechanisms and is watched the dynamic image mode, to solve the reaction time of known measurement mode with optical diode measurement liquid crystal display, but fail to consider the shortcoming of human eye observation, the present invention is with emulation human eye trace mode filmed image, and load vision mode and analyze dynamic image quality, this can present the judgement approaching with human eye; (2) present the color offset situation with color locus, the present invention notes down all color datas of dynamic image fuzzy region and plots visualized graphs, the distribution situation of seeing color locus that the user can intuition, but not only calculate the dichromatism aberration; (3) dynamic image color character processing, the present invention is directed to every cover display and obtain color image in dynamic capture mode, and carry out the color character conversion with the measuring value of standard colorimetric measurement equipment, so can solve different colour gamuts of different displays and normative reference problem.
The present invention also has following advantage:
1, utilizes the colour camera capture, exempt the shortcoming of manual detection.
2, utilize tracing type system emulation human eye to watch dynamic image mechanism to take the dynamic image colour excursion degree, and be quantized into parameter, with canonical reference as LCD usefulness.
3, can't compare in every group display equipment colour gamut performance difference, therefore carry out the processing of dynamic image color character, the color parameter after can obtaining proofreading and correct.
4, the record dynamic image produces all information of colour cast zone, and pointwise is drawn on the chrominance space of appointment, can observe the phenomenon and the data of color offset by this color locus intuition.
Main composition of the present invention sees also the detection system schematic diagram of display device dynamic image colour excursion shown in Figure 3, framework is divided into four major parts, comprises image acquiring unit 31, image positioning unit 33, color characterization (color characterization) unit 35 and image analysing computer unit 37.Wherein image acquiring unit 31 is the camera system of emulation human eye trace mode, comprise that the camera that utilizes chromatic image sensing component (as the CCD/CMOS sensing component) takes dynamic image in the display to be measured, carries out the colourity device of chromaticity correction, with the rotating control assembly of its rotation of control etc.; Image positioning unit 33 is after carrying out filming image with high-resolution, adjust enlargement ratio, carry out screen border location (can define the indicator screen border) with the boundary alignment footage number, follow the trail of steps such as accuracy location with dynamic image by specific pattern, lines or frame line; Color character unit 35 be earlier with above-mentioned obtain colour in dynamic capture mode after, obtain the standard colorimetric value with a colourity device again, and utilize computer system or other chroma correction means to carry out chromaticity correction, chromatic image after the processing then carries out dynamic color characterization switch process, color parameter after this characterization can obtain proofreading and correct, i.e. color character value; And image analysing computer unit 37 is to load vision mode, above-mentioned measurement is carried out the dynamic image quality analytical procedure such as brightness analysis, chroma offset analysis of image, with the measurement curve that in a uniform chrominance space, draws, enable to present the judgement approaching with human eye.
Fig. 4 A shows the embodiment schematic diagram of display device dynamic image colour excursion detecting system of the present invention.Comprising display to be measured 41, The present invention be directed to LCD (LCD), plasma scope flat-panel screens such as (PDP) detects, produce test pattern 49 by image processing module 47 earlier, wherein execution mode can a computer system produce test pattern 49, the test pattern 49 that is undertaken in this display 41 by photographic unit is taken again, photographic unit includes colour phhotograpy device 42, colourity device 43 and the rotating control assembly 44 that couples camera 42, and this photographic unit can detect at the display of different kenels.Wherein camera 42 moves by rotating control assembly 44 (as motor is set) or rotates and dynamically obtain chromatic image, and the image that utilizes photographic unit to absorb not is accurate, the present invention more can utilize the colourity device 43 with standard colorimetric measurement capability to measure image in the display 41, is converted to the standard colorimetric space again through characterization step afterwards.
Afterwards, receive image and the tint volume measured value taken by a color characterization module 45 and carry out the conversion of color characterization, for example, in obtaining demonstration after the color-values of dynamic image, the chromatic value comparison that is measured with the colourity device (colormeter) of standard, carry out adjustment of image, obtain the color character value after the correction after the conversion.
After image analysing computer module 46 then receives the image and chrominance information that above-mentioned color character result and photographic unit obtain, an earlier selected colourity space, captured image coordinate is converted to the chrominance space coordinate, produces the hue error value that quantizes through image processing module 47.
The embodiment of above-mentioned color character module 45, image analysing computer module 46 and image processing module 47 can utilize a computer system processor, promptly computer system receives the captured image information of photographic unit thus, carry out characterization, analysis, produce the hue error value that quantizes after being converted to the chrominance space coordinate, promptly testing result 48.
The embodiment that dynamically takes test pattern sees also camera 42 embodiment that Fig. 4 B shows.When the test pattern 49 that is shown in display 41 is mobile in display 41 pictures (dynamically being shown as test pattern 49 '), this photographic unit comprises an image detector, when in a single day detector (there is no and be shown among the figure) detects moving image, promptly activate rotating control assembly and carry out camera 42 Spin Control, follow the trail of the test pattern 49 ' that this moves.The step of follow shot also comprises a correction mechanism, when follow shot, carries out one simultaneously and aims at step, when aiming at failure, again utilize the setting of the correcting captured mechanism of rotating control assembly, and the above-mentioned again tracking shooting of carrying out test pattern 49 ', determine up to aiming at.
Fig. 5 is the performed detection method flow chart of colour excursion detecting system that Fig. 4 A shows, steps such as flow process comprises that image obtains, image location, color characterization and image analysing computer, corresponding diagram 3 described detection systems.
During beginning, image processing module produces test pattern, and image processing module is coupled to display, produces a test pattern that moves on display, and another embodiment more can be coupled to the patterns of displays generator by one and produce test pattern (step S501); Then take (step S503) by photographic unit, test pattern during shooting process moves with the tracking of colour phhotograpy device, wherein control in the camera tracking shooting display and go up pattern, also obtain the chromatic value of standard by the colourity device of standard in imitation human eye vision mode; Take step thus and obtain the Pixel Information of test pattern (step S505), and carry out chromaticity correction, produce the chromatic value (step S507) of standard via the colourity device; Again behind the image location, obtain the color character result, this step is to produce translation operation at different displays, this translation operation is to be produced by transformational relation between the information of this test pattern and a standard colorimetric space, the Pixel Information of test pattern can be converted to the standard colorimetric space, embodiment can be a transition matrix (transformation matrix) or and changes table look-up (transformation lookup table) (step S509), carry out the image analysing computer step again, this step is to be the coordinate (step S511) of chrominance space by above-mentioned translation operation with captured movable image information translation, and then by the information generation one average hue error value of chrominance space, the hue error value of this quantification is one of free-revving engine of the present invention (step S513).
Fig. 6 is described to be filming image step of the present invention, aforesaid photographic unit can carry out aligning step (step S601) earlier, wherein mode comprises an image positioning unit, follows the trail of steps (being exposed in this case Figure 10 in detail) such as accuracy correction with dynamic image as enlargement ratio adjustment (being exposed in this case Fig. 9 in detail), screen border location; Afterwards, when the shooting preparation of above-mentioned test pattern is finished, promptly continue to detect movable image step (step S603), wherein be under shooting state, detect the test pattern that this moves with an image detector, when detecting mobile status, promptly drive rotating control assembly control camera and carry out the shooting of pattern; Afterwards, promptly carry out follow shot (step S605) by rotating control assembly control camera; After finishing, shooting need judge whether to take successfully, as judge whether system gets access to image information, whether the colour phhotograpy device operates correct etc. (step S607), if take failure, compensate or revise photographic unit (step S609) earlier, and get back to step S603 and take again, carry out steps such as movable image detection, follow shot; If successfully obtain required image information, expression is taken successfully, then takes and finishes (step S611).
Fig. 7 shows that then image of the present invention obtains the details flow process with the color character step, and it finally carries out the conversion of chrominance space by translation operation.
Step begins, produce color lump to be measured earlier, preferred embodiment is to produce this color lump to be measured (step S701) by above-mentioned image processing module or pattern generator, then take the color lump to be measured that moves by above-mentioned photographic unit, obtain the color photographing information (step S703) of color lump to be measured by the image sensing component in the colour phhotograpy device, and behind the wherein chromatic value (step S705) that obtains by the colourity device, calculate colourity mean value by the picture that obtains, in this step if the test pattern that is taken is a two-dimensional pattern, consequent measurement color lump also is a two-dimensional pattern, and the step of calculating mean value produces the colourity mean value (step S707) of one dimension thus.What deserves to be mentioned is, the pixel pitch (black matrix) that level shows with the matrix pattern on the display should influence the measurement of wherein brightness, but, when photographic unit utilizes the test pattern that the trace mode shooting level moves, the pixel pitch that level shows on the display can be blured and is difficult for showing, and the pixel pitch of vertical direction then can be ignored by this mean value step.
Afterwards, carry out chromaticity correction by the color character module by the above-mentioned chromatic value that obtains, draw standard colorimetric value (step S709), produce a conversion again and table look-up (lookup table) (step S711), it is to note down the Pixel Information (as the red R of each pixel, green G, blue B tristimulus values) and its standard colorimetric value that respectively is taken that this conversion is tabled look-up.Then, draw translation operation (step S713), this translation operation can with through adjusted this test pattern information (as red R, green G, blue B tristimulus values) through the coordinate (as coordinate x, y value) of Coordinate Conversion for certain selected chrominance space.
Figure 8 shows that the flow chart of the image analysing computer step shown in above-mentioned Fig. 5.Draw after above-mentioned translation operation, promptly need to select a suitable chrominance space (step S801) according to display to be measured, then introduce above-mentioned translation operation (step S803) that draws through characterization, and by translation operation son the pattern-information of colourity adjustment is carried out chrominance space and be converted to a colourity space coordinates (step S805), then describe the chrominance space coordinate after conversion, curve (step S807) shown in this case Figure 11 B, make comparisons by the chromaticity coordinate value after the conversion and the chromaticity coordinate value of a standard (not having colour cast), calculate average hue error value (step S809), this average hue error value is a hue error value that quantizes.
Enlargement ratio adjustment unit in the above-mentioned relevant image positioning unit of photographic unit, the adjustment of enlargement ratio is to adjust image sensing component and pixel (pixel) ratio that is taken, as be adjusted into 1 (pixel): 10 (photosensitive units), then represent to take a pixel, increase the resolution of detection with this with 10 photosensitive units in 10 image sensing components.
Preferred embodiment as shown in Figure 9, but the cross frame 97 of display 91 screen displayed one resize ratio, and in around a plurality of square boxs 95 are arranged.This embodiment utilizes in the display 91 that cross frame 97 decides enlargement ratio on the picture, adjust the covering scope of cross frame 97 earlier, change the distance of display 91 and camera (not being shown among this figure) again, perhaps change the distance of image sensing component and display 91, make the captured scope of this camera (as camera covering scope 93 among the figure) fill up this cross frame 97, promptly reach required enlargement ratio.
Figure 10 then shows the dynamic image tracking accuracy positioning unit embodiment schematic diagram of photographic unit in the image positioning unit, when photographic unit is followed the trail of the test pattern that moves with fixed speed in the screen, it is that the dynamic image that is used for confirming to photograph is all in same position that dynamic image is followed the trail of the accuracy location, wherein rotating control assembly can be revised start angle automatically, to take next time, up to the image tracing error within certain suitable displacement.Embodiment such as graphic can be adjusted the tracking angle automatically by the camera of rotating control assembly control, can photograph fuzzy region 101 in the display 91 up to the shooting of each middle, then finishes this dynamic image and follows the trail of the accuracy location.
Figure 11 A is depicted as on the display 91 transformation that shows edge colour cast degree when two kinds of color lumps move, and as the conversion of prospect and background, and testing goal of the present invention is the colour cast degree when detecting for transformation.Embodiment as shown in FIG., first color region 111 of left is a foreground color, and the second right-hand color region 112 is expressed as background color, and when taking the test pattern that moves, the transformation of prospect and background color may produce colour cast.
Then the chrominance space coordinate embodiment that describes described in the above-mentioned steps S807 after conversion shown in Figure 11 B, when shown in Figure 11 A, changing second color region 112 into by first color region 111, desired reference chroma curve 113 expressions one among the figure in chromaticity coordinate do not produce the ideal curve of colour cast, the chroma curve 114 that measures with reality shows a gap Δ, both curves have a plurality of gap Δs, each gap Δ is represented the hue error value of each measuring value, its mean value (as step S809) is shown as whole hue error value, is the hue error value of quantification that detection method of the present invention produces.
In sum, the present invention is a display device dynamic image colour excursion detecting system and detection method, be to measure emulation human eye mechanism with dynamic image to take a test pattern that moves, the function that color characterization conversion of the circumstances in which people get things ready for a trip of going forward side by side and color offset quantize can provide the analysis display device dynamic image quality that display manufacturer can be rationally correct and is used as classification and sells foundation.
The foregoing description is only in order to explanation the present invention, and non-limiting the present invention.
Claims (25)
1. a display device dynamic image colour excursion detecting system is characterized in that, this system includes:
One image acquiring unit is with emulation human eye trace mode, utilizes a colour phhotograpy device to take dynamic image in the display to be measured;
One image positioning unit, the location of the image that is taken;
One color characterization unit, after obtaining the color-values of this dynamic image, the chromatic value comparison that is measured with a colourity device of standard, this color character unit carries out standard colorimetric by this colourity device and proofreaies and correct, carry out chromaticity correction and color characterization with the standard colorimetric value, and produce an average brightness;
And
One image analysing computer unit loads a vision mode, and the image brilliance that is taken, the analytical procedure of chroma offset are with the measurement curve that draws in a uniform chrominance space.
2. display device dynamic image colour excursion detecting system as claimed in claim 1 is characterized in that, described image acquiring unit is to control a camera with a rotating control assembly to rotate, to take.
3. display device dynamic image colour excursion detecting system as claimed in claim 1 is characterized in that, described image positioning unit more comprises a means for correcting, the tracking accuracy location when taking.
4. display device dynamic image colour excursion detecting system as claimed in claim 1 is characterized in that, the enlargement ratio adjustment of the image that described image positioning unit is taken, screen border location and tracking accuracy.
5. display device dynamic image colour excursion detecting system as claimed in claim 4 is characterized in that, described screen border location is to define this indicator screen border by the pattern, lines or the frame line that are shown on the display to be measured.
6. display device dynamic image colour excursion detecting system as claimed in claim 4 is characterized in that, described enlargement ratio set-up procedure comprises:
Adjust a graphics proportion that is shown on the display;
Change the distance of a chromatic image sensing component in display and the colour phhotograpy device; And
Make the scope of shooting contain described figure.
7. a display device dynamic image colour excursion detecting system is characterized in that, this system includes:
The photographic unit of one emulation tracing of human eye mode is taken at a dynamic pattern that shows on the display to be tested, and produces a standard colorimetric value;
One color characterization module, receive the image that photographic unit is taken, obtain the color-values of this image, the chromatic value comparison that is measured with a colourity device of standard, carry out chromaticity correction and color characterization with the standard colorimetric value, produce an average brightness, wherein the standard colorimetric value carry out color characterization;
One image analysing computer module receives average brightness and obtains the standard colorimetric value with photographic unit, with the video conversion of taking in a colourity space, the testing result of generation one quantification; And
One image processing module is in order to produce dynamic pattern.
8. display device dynamic image colour excursion detecting system as claimed in claim 7 is characterized in that, described color character module is carried out producing behind the chromaticity correction conversion and tabled look-up, and tables look-up the video conversion that will take in described chrominance space by this conversion.
9. display device dynamic image colour excursion detecting system as claimed in claim 7 is characterized in that, described photographic unit includes the rotating control assembly that a colour phhotograpy device, this colourity device and one couple this camera.
10. display device dynamic image colour excursion detecting system as claimed in claim 7 is characterized in that described photographic unit comprises a detector, to detect mobile dynamic pattern.
11. a display device dynamic image colour excursion detection method is characterized in that, this method includes:
(a) produce a test pattern;
(b) follow the trail of the test pattern of taking in moving with a colour phhotograpy device with imitation human eye vision mode;
(c) obtain the information of test pattern;
(d) obtain a standard colorimetric value with a colourity device;
(e) carry out chromaticity correction;
The color characterization of the test pattern information of (f) taking;
(g) captured test pattern is converted to coordinate in the chrominance space;
(h) describe through the conversion after the chrominance space coordinate, by the conversion after chromaticity coordinate value and this standard colorimetric value compare, calculating one average hue error value; And
(i) produce a testing result that quantizes.
12. display device dynamic image colour excursion detection method as claimed in claim 11 is characterized in that, wherein is in imitation human eye vision mode, control colour phhotograpy device is followed the trail of and is taken test pattern.
13. display device dynamic image colour excursion detection method as claimed in claim 11 is characterized in that, when wherein carrying out the step of color characterization, produces translation operation by transformational relation between the information of test pattern and this chrominance space.
14. display device dynamic image colour excursion detection method as claimed in claim 13 is characterized in that, wherein is by described translation operation test pattern to be converted to coordinate in the chrominance space.
15. display device dynamic image colour excursion detection method as claimed in claim 13 is characterized in that, described translation operation is a transition matrix.
16. display device dynamic image colour excursion detection method as claimed in claim 13 is characterized in that, described translation operation is that a conversion is tabled look-up.
17. display device dynamic image colour excursion detection method as claimed in claim 11 is characterized in that, described average hue error value is the mean difference distance between the chroma curve that a desired reference curve and measures in chrominance space.
18. display device dynamic image colour excursion detection method as claimed in claim 11 is characterized in that, the shooting step of described test pattern more comprises:
Proofread and correct a photographic unit;
Detect the test pattern that moves; And
Carry out the follow shot of test pattern.
19. display device dynamic image colour excursion detection method as claimed in claim 18 is characterized in that, wherein is to judge whether to take successfully after taking step.
20. if display device dynamic image colour excursion detection method as claimed in claim 19 is characterized in that, wherein after judging the shooting failure, promptly revises described photographic unit and continues to take step.
21. display device dynamic image colour excursion detection method as claimed in claim 18 is characterized in that, wherein is to detect the test pattern that moves by an image detector.
22. display device dynamic image colour excursion detection method as claimed in claim 18 is characterized in that, wherein when detecting mobile test pattern, promptly drives rotating control assembly control colour phhotograpy device and carries out the shooting of this test pattern.
23. display device dynamic image colour excursion detection method as claimed in claim 18 is characterized in that, the aligning step of described photographic unit is level, the luffing angle by rotating control assembly control colour phhotograpy device.
24. display device dynamic image colour excursion detection method as claimed in claim 11 is characterized in that, described test pattern is a two-dimentional color lump, draws the colourity mean value of this one dimension after mean value calculation.
25. display device dynamic image colour excursion detection method as claimed in claim 11 is characterized in that, the calculation procedure of described average hue error value comprises:
Select a colourity space;
Introducing translation operation;
The pattern-information that conversion is taken is a colourity space coordinates;
Calculate average hue error value by the gap between a desired reference curve in the chrominance space and a chroma curve that measures.
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| CN101807110B (en) * | 2009-02-17 | 2012-07-04 | 由田新技股份有限公司 | Pupil positioning method and system |
| CN102043459B (en) * | 2009-10-21 | 2012-05-30 | 宏碁股份有限公司 | Energy-saving mode detection method, detection device and detection system for display |
| CN103165057B (en) * | 2013-03-12 | 2015-04-08 | 合肥京东方光电科技有限公司 | Method and device for determining level of residual image of display |
| EP3096516A1 (en) * | 2015-05-22 | 2016-11-23 | Thomson Licensing | Method for color mapping a video signal and method of encoding a video signal and corresponding devices |
| CN108028918B (en) * | 2015-09-16 | 2020-05-22 | 柯尼卡美能达株式会社 | Image signal generating device and display measuring device |
| CN106162161A (en) * | 2016-07-05 | 2016-11-23 | 青岛海信电器股份有限公司 | A kind of image detecting method and display device |
| CN106231295A (en) * | 2016-08-04 | 2016-12-14 | 惠州市德赛西威汽车电子股份有限公司 | A kind of display screen image quality automatic checkout system, detection method and application thereof |
| CN108107613A (en) * | 2017-12-27 | 2018-06-01 | 兴天通讯技术有限公司 | A kind of color offset detection method applied to display system |
| TWI677231B (en) * | 2018-03-16 | 2019-11-11 | 和碩聯合科技股份有限公司 | Method and system for inspecting display apparatus |
| CN111399633B (en) * | 2019-01-03 | 2023-03-31 | 见臻科技股份有限公司 | Correction method for eyeball tracking application |
| TWI691213B (en) * | 2019-02-21 | 2020-04-11 | 緯創資通股份有限公司 | Portable device, display device and calibration method of display device |
| CN112017614A (en) * | 2019-05-29 | 2020-12-01 | 宏碁股份有限公司 | Color correction system and display |
| CN117079613B (en) * | 2023-09-27 | 2023-12-22 | 惠科股份有限公司 | Display screen compensation method, display and storage medium |
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