CN102111624A - Luminance/chrominance information collection method for pixels of LED display screen - Google Patents
Luminance/chrominance information collection method for pixels of LED display screen Download PDFInfo
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Abstract
The invention relates to a luminance/chrominance parameter collection method and pixels of an LED display screen. The method comprises the following steps: pixels of to-be-collected display areas of an LED display screen in M row and N line are divided into D groups, and the pixels in each group are arranged at intervals; D groups of pixels in the to-be-collected display area of the LED display screen are controlled to be displayed group by group; and area array CCD (Charge Coupled Device) luminance/chrominance collection equipment is utilized to collect and extract the luminance/chrominance information of each primary color in the D groups of pixels in a time-sharing manner, and after collection and extraction, the luminance/chrominance information of each primary color in all the groups of pixels is collected to obtain an integral luminance/chrominance information of each primary color of the pixels in the to-be-collected areas of the LED display screen according to the position arrangement of a pixel coordinate. The method is not restricted by the resolution of the area array CCD luminance/chrominance collection equipment, and all the luminance/chrominance information of the pixels of the display screen can be collected group by group in a time-sharing manner, so as to improve the collection accuracy and the working efficiency, and simultaneously reduce unevenness among the spliced areas.
Description
Technical field
The invention belongs to the information display technology field, relate to a kind of LED display pixel light tone degree information collecting method.
Background technology
LED display is made up of hundreds of thousands, up to a million groups LED light-emitting diode.Because the characteristic of semiconductor and the modular assembling mode of LED display of LED device itself cause the inhomogeneous of the brightness of LED display light emitting pixel point, colourity, have a strong impact on the LED display display effect.In order to address this problem, in recent years, the LED display industry proposes the light tone degree unification acquisition correction technology based on area array CCD light tone degree collecting device, this technology is the light tone degree information of gathering a plurality of pixels of LED display simultaneously by area array CCD light tone degree parameter acquisition equipment, each pixel light tone degree information extraction is converted to corresponding light tone degree correction parameter, be stored in the display control program, and by hardware system LED display display pixel point is carried out light tone degree unification and proofread and correct, thereby the display effect of realization light tone degree uniformity.Area array CCD light tone degree collecting device acquisition principle is that the light emitting pixel of LED display is lighted chrominance information and is incident upon on the area array CCD photosurface the common light tone degree information that characterizes a LED display pixel point of a plurality of CCD light-sensitive image vegetarian refreshments through optical system.
Because the photosensitive pixel number of spots of area array CCD light tone degree collecting device is limited, for fear of display pixel overlapping phenomenon between points occurring, cause extracting accurately the light tone degree information of display pixel point, each area array CCD light tone degree collecting device can only be gathered the display pixel point photochromism information in some scopes.Usually the area array CCD light tone degree collecting device of millions pixel resolution is gathered the light tone degree information of 128 * 128 resolution display pixel points at most at every turn.
Existing acquisition technique can't disposablely be gathered for the big LED display of display resolution, adopts the subregion to gather usually, the method for later stage amalgamation, and acquisition step is:
1. adjust the focal length of area array CCD light tone degree collecting device, aim at a viewing area to be collected.Definite principle of viewing area to be collected is that the light tone degree information of the display screen display pixel point in this viewing area can effectively be gathered, extract by area array CCD light tone degree collecting device.
2. put the light tone degree information of each primary colours and gather gathering display pixel in the viewing area.
3. after having gathered the light tone degree information of display pixel point of a viewing area, move or surfaces of revolution array CCD camera, aim at viewing area next to be collected.
More than three steps circulate, light the chrominance information collection until the display pixel of the All Ranges of display screen and finish.The light tone degree information of the display pixel point of a plurality of pickup area is carried out amalgamation the most at last, and the display pixel that forms full display screen is lighted chrominance information.
But because LED display can infinitely splice, display screen can be by forming up to up to a million pixels, and the viewing area display pixel number of spots of collection is limited, and above-mentioned steps need repeat tens times even up to a hundred times.Because times of collection is many and each mobile camera all may cause the appearance of human error, therefore existing acquisition method is difficult to satisfy the collection demand of the light tone degree information of LED display.
Summary of the invention
The technical problem to be solved in the present invention provides a kind of LED display pixel light tone degree information collecting method, this method is not changing area array CCD light tone degree resolution, and under the situation of not mobile or rotation camera, can effectively the LED display pixel quantity of gathering be improved tens of times, even hundreds of times, improved acquisition precision and operating efficiency.
In order to solve the problems of the technologies described above, LED display pixel light tone degree parameter collecting method of the present invention comprises the steps:
(1), the LED display viewing area to be collected pixel with the capable N row of M is divided into D group, pixel is spaced in every group, row is that Dx, row are Dy to the pixel spacing distance to the pixel spacing distance, D=Dx * Dy, and wherein Dx can be divided exactly by M, Dy can be divided exactly by N;
(2), the pixel of D group in the viewing area to be collected on the LED display is divided into groups to show control, control one group of pixel at every turn and show; Utilize each primary colours light tone degree information of pixel in each group of area array CCD light tone degree collecting device acquisition time, and each primary colours light tone degree information of pixel in organizing is extracted;
(3), D group each primary colours light tone degree information gathering of all pixels and extraction finished after, each primary colours light tone degree information of pixel in all groups is aggregated into complete LED display area pixel to be collected according to the arrangement of pixel coordinate position puts each primary colours light tone degree information.
For the capable N row of a M LED display viewing area to be collected that is imaged on the area array CCD light tone degree collecting device, the position coordinates of each pixel be P (x, y), x represent pixel point place line position wherein, the x scope is 1≤x≤M, y represent pixel point column position, and the y scope is 1≤y≤N.Face LED display viewing area to be collected, the top left corner pixel point coordinates is made as P (1,1) starting point, and the rest may be inferred.
In every group of pixel of LED display viewing area to be collected, row is that Dx, row are Dy to the pixel spacing distance to the pixel spacing distance, and wherein Dx can be divided exactly by M, Dy can be divided exactly by N.
Respectively organize in the LED display viewing area to be collected pixel called after Group (i, j), the i scope is 1≤i≤Dx, the j scope is 1≤j≤Dy.Face LED display viewing area to be collected.Be divided into Dx * Dy group altogether.Rule of classification is:
When pixel coordinate P (x, y) satisfying x is i divided by the Dx remainder, when y is the condition of j divided by the Dy remainder, then P (x, y) pixel belong to Group (i, j) group;
When pixel coordinate P (x, y) satisfying x is 0 divided by the Dx remainder, when y is the condition of j divided by the Dy remainder, then P (x, y) pixel belong to Group (Dx, j) group;
When pixel coordinate P (x, y) satisfying x is i divided by the Dx remainder, when y is 0 condition divided by the Dy remainder, then P (x, y) pixel belongs to Group (i, Dy) group;
When pixel coordinate P (x, y) satisfying x is 0 divided by the Dx remainder, when y is 0 condition divided by the Dy remainder, then P (x, y) pixel belongs to Group (Dx, Dy) group;
The group at the 1st row the 1st row pixel place is Group (1,1), the group at the 1st row the 2nd row pixel place is Group (1,2), the group at the 2nd row the 2nd row pixel place is Group (2,2), the rest may be inferred, and the viewing area actual to be collected of each group is: line direction pixel quantity is that M/Dx, column direction pixel quantity are the display pixel dot matrix of N/Dy.
Display screen viewing area to be collected every group of pixel line direction pixel quantity is M/Dx, and M/Dx should be less than the maximum collection point of area array CCD light tone degree collecting device line direction quantity; Viewing area to be collected every group of pixel column direction pixel quantity is N/Dy, and N/Dy should be less than the maximum collection point of area array CCD light tone degree collecting device column direction quantity.
The pixel that each collection can only be controlled in the group shows that the pixel that does not belong to this group does not show.
Each group gatherer process is that the light tone degree information of each primary colours of pixel in organizing is gathered respectively, and each primary colours light tone degree information of pixel in organizing is extracted.Each primary colours light tone degree information of pixel in the group of Dx * Dy group is gathered and extracted, and then that the group of Dx * Dy group is interior each primary colours light tone degree information of pixel is aggregated into each primary colours light tone degree information of complete pickup area pixel according to the arrangement of pixel coordinate position.
Advantage of the present invention:
1, LED display display pixel of the present invention is lighted the chrominance information acquisition method, compare with existing acquisition method, the restriction that not differentiated by area array CCD light tone degree collecting device under certain collection distance, can all be gathered the light tone degree information block timesharing of pixels of display screen.There is not the situation that moves or rotate camera, improved acquisition precision and operating efficiency.Reduce to splice between the zone inhomogeneous situation between the zone of being caused and the zone simultaneously.For the bigger LED display of area, can reduce zone splicing number of times, improve collecting efficiency and acquisition precision.
2, LED display display pixel of the present invention is lighted the chrominance information acquisition method, do not need the hardware of existing area array CCD light tone degree collecting device is transformed, only need carry out corresponding modification and can realize easily and efficiently that the LED display display pixel lights the chrominance information collection, effectively save the system upgrade cost at the demonstration Control Software of grouping timesharing and DAS.
Description of drawings
Below in conjunction with the drawings and specific embodiments the present invention is described in further detail.
Fig. 1 is imaged on schematic diagram on the area array CCD for the LED pixel.
Overlapping situation schematic diagram appears in Fig. 2 on the area array CCD for the LED pixel is imaged on.
Fig. 3 is that 12 * 20 pixel Group (1,1) group pixel shows schematic diagram on the LED display.
Fig. 4 is that 12 * 20 pixel Group (2,3) group pixel shows schematic diagram on the LED display.
Fig. 5 is imaged on the schematic diagram that occurs overlapping situation on the area array CCD simultaneously for 4 * 4 pixels on the LED display.
Fig. 6 a, Fig. 6 b, Fig. 6 c, Fig. 6 d are respectively the group of 4 * 4 pixel Group (1,1) on the LED display, Group (1,2) group, Group (2,1) group, Group (2,2) group and are imaged on the schematic diagram on the area array CCD respectively.
Embodiment
As shown in Figure 1, display pixel of a plurality of CCD light-sensitive image vegetarian refreshments 102 common signs is put 101 light tone degree information.
As shown in Figure 2, because the photosensitive pixel number of spots of area array CCD light tone degree collecting device is limited, can only gather the LED pixel of some at every turn.Otherwise display pixel overlapping phenomenon between points as shown in Figure 2 can occur, cause to extract accurately the situation of the light tone degree information of display pixel point.
As shown in Figure 3, the LED display pixel of 12 row, 20 row is divided into 16 groups, and every group of interior pixel is spaced, and row is that Dx=4, row are Dy=4 to the pixel spacing distance to the pixel spacing distance, D=Dx * Dy=16.
The position coordinates of each pixel be P (x, y), x represent pixel point place line position wherein, the x scope is 1≤x≤12, y represent pixel point column position, the y scope is 1≤y≤20.Face LED display viewing area to be collected, the top left corner pixel point coordinates is made as P (1,1) starting point, and the rest may be inferred.
Viewing area to be collected respectively organize pixel called after Group (i, j), the i scope is 1≤i≤4, the j scope is 1≤j≤4.Face LED display viewing area to be collected, the group at the 1st row the 1st row pixel place is Group (1,1), and the group at the 1st row the 2nd row pixel place is Group (1,2), and the group at the 2nd row the 2nd row pixel place is Group (2,2), and the rest may be inferred.Be divided into 16 groups altogether.
The situation that Group (1,1) group pixel shows simultaneously as shown in Figure 3.
The situation that Group (2,3) group pixel shows simultaneously as shown in Figure 4.
When gathering for the first time, control Group (1,1) group pixel shows, the light tone degree information of each primary colours of pixel in organizing is gathered respectively, and each primary colours light tone degree information of pixel in organizing is extracted.
When gathering for the second time, control Group (1,2) group pixel shows, the light tone degree information of each primary colours of pixel in organizing is gathered respectively, and each primary colours light tone degree information of pixel in organizing is extracted.
After each primary colours light tone degree information gathering of pixel in 16 groups and extraction finished, each primary colours light tone degree information of all pixels is aggregated into each primary colours light tone degree information of complete pickup area pixel according to the arrangement of pixel coordinate position.
As shown in Figure 5, area array CCD light tone degree collecting device CCD resolution is 25 * 25.The maximum collection point of area array CCD light tone degree collecting device line direction quantity 2, the maximum collection point of column direction quantity 2 promptly can disposable collection 2 * 2=4 point pixel light tone degree information.
For a LED display viewing area to be collected that is imaged on the area array CCD light tone degree collecting device 4 row, 4 row, the position coordinates of each pixel be P (x, y), x represent pixel point place line position wherein, the x scope is 1≤x≤4, y represent pixel point column position, and the y scope is 1≤y≤4.Face LED display viewing area to be collected, the top left corner pixel point coordinates is made as P (1,1) starting point, and each pixel position coordinates is in the viewing area promptly to be collected:
P(1，1)、P(1，2)、P(1，3)、P(1，4)、
P(2，1)、P(2，2)、P(2，3)、P(2，4)、
P(3，1)、P(3，2)、P(3，3)、P(3，4)、
P(4，1)、P(4，2)、P(4，3)、P(4，4)。
Every group of expert to the pixel spacing distance be 2, row are 2 to the pixel spacing distance, wherein 2 can 4 be divided exactly, 2 divided exactly by 4.
Every group of called after Group (i, j), the i scope is 1≤i≤2, the j scope is 1≤j≤2.Face LED display viewing area to be collected, be divided into 4 groups altogether, promptly
Group(1，1)、Group(1，2)、
Group(2，1)、Group(2，2)。
When pixel coordinate P (x, y) satisfying x is 1 divided by 2 remainders, when y is 1 condition divided by 2 remainders, then P (x, y) pixel belongs to Group (1,1) group, the rest may be inferred.Be that P (1,1), P (1,3), P (3,1), P (3,3) belong to Group (1,1) group.
When pixel coordinate P (x, y) satisfying x is 1 divided by 2 remainders, when y is 0 condition divided by 2 remainders, then P (x, y) pixel belongs to Group (1,2) group, the rest may be inferred.Be that P (1,2), P (1,4), P (3,2), P (3,4) belong to Group (1,2) group.
When pixel coordinate P (x, y) satisfying x is 0 divided by 2 remainders, when y is 1 condition divided by 2 remainders, then P (x, y) pixel belongs to Group (2,1) group, the rest may be inferred.Be that P (2,1), P (2,3), P (4,1), P (4,3) belong to Group (2,1) group.
When pixel coordinate P (x, y) satisfying x is 0 divided by 2 remainders, when y is 0 condition divided by 2 remainders, then P (x, y) pixel belongs to Group (2,2) group, the rest may be inferred.Be that P (2,2), P (2,4), P (4,2), P (4,2) belong to Group (2,2) group.
The viewing area actual to be collected of each group is: line direction pixel quantity is 2, column direction pixel quantity is 2 display pixel dot matrix.
Each group line direction pixel quantity is 2, less than the maximum collection point 2 of area array CCD light tone degree collecting device line direction.
Each group column direction pixel quantity is 2, less than the maximum collection point 2 of area array CCD light tone degree collecting device column direction.
Each collection can only be controlled the pixel that belongs to a group and show that the rest of pixels point that does not belong to this group does not show.
Each group gatherer process is that the light tone degree information of three primary colours of pixel red, green, blue in organizing is gathered respectively, and three primary colours light tones of pixel red, green, blue degree information in organizing is extracted.The repeating above said collection process gathers three primary colours light tones of pixel red, green, blue degree information in the group of 4 groups and extract.Then three primary colours light tones of the pixel red, green, blue degree information in the group of 4 groups is aggregated into complete three primary colours light tones of pickup area pixel red, green, blue degree information according to the sequence arrangement of pixel position coordinates.
Pixel quantity in the pickup area enlarges 4 times.
Embodiment 1
Area array CCD light tone degree collecting device CCD resolution is 1392 * 1040.The maximum collection point of area array CCD light tone degree collecting device line direction quantity 100, the maximum collection point of column direction quantity 130 promptly can disposable collection 100 * 130=13000 pixel light tone degree information.
For a LED display viewing area to be collected that is imaged on 768 row, 1024 row on the area array CCD light tone degree collecting device, the position coordinates of each pixel is P (x, y), x represent pixel point place line position wherein, the x scope is 1≤x≤768, y represent pixel point column position, the y scope is 1≤y≤1024.Face LED display viewing area to be collected, the top left corner pixel point coordinates is made as P (1,1) starting point, and the rest may be inferred.
LED display viewing area to be collected pixel is divided into 64 groups, every group of expert to the pixel spacing distance be 8, row are 8 to the pixel spacing distance, wherein 8 can 768 be divided exactly, 8 can be divided exactly by 1024.
Every group of called after Group (i, j), the i scope is 1≤i≤8, the j scope is 1≤j≤8.Face LED display viewing area to be collected, be divided into 64 groups altogether.
When pixel coordinate P (x, y) satisfying x is 1 divided by 8 remainders, when y was 1 condition divided by 8 remainders, then this pixel belonged to Group (1,1) group,
When pixel coordinate P (x, y) satisfying x is 0 divided by 8 remainders, when y is the condition of j divided by 8 remainders, then P (x, y) pixel belong to Group (8, j) group;
When pixel coordinate P (x, y) satisfying x is i divided by 8 remainders, when y is 0 condition divided by 8 remainders, then P (x, y) pixel belongs to Group (i, 8) group;
When pixel coordinate P (x, y) satisfying x is 0 divided by 8 remainders, when y is 0 condition divided by 8 remainders, then P (x, y) pixel belongs to Group (8,8) group;
The rest may be inferred.The viewing area actual to be collected of each group is that line direction pixel quantity is 96, column direction pixel quantity is 128 display pixel dot matrix.
Every group of line direction pixel quantity is 96, less than the maximum collection point of area array CCD light tone degree collecting device line direction quantity 100.
Every group of column direction pixel quantity is 128, less than the maximum collection point of area array CCD light tone degree collecting device column direction quantity 130.
Each collection can only be controlled and show the pixel that belongs to a group, and the rest of pixels point that does not belong to this group does not show.
Each group gatherer process is that the light tone degree information of three primary colours of pixel red, green, blue in organizing is gathered respectively, and three primary colours light tones of pixel red, green, blue degree information in organizing is extracted.Repeat said process, three primary colours light tones of pixel red, green, blue degree information in the group of 64 groups is gathered and extracted.Then three primary colours light tones of the pixel red, green, blue degree information in the group of 64 groups is aggregated into complete three primary colours light tones of pickup area pixel red, green, blue degree information according to the sequence arrangement of pixel position coordinates.
Pixel quantity in the pickup area enlarges 64 times.
Embodiment 2
Area array CCD light tone degree collecting device CCD resolution is 1392 * 1040.The maximum collection point of area array CCD light tone degree collecting device line direction quantity 100, the maximum collection point of column direction quantity 130 promptly can disposable collection 100 * 130=13000 pixel light tone degree information.
For a LED display viewing area to be collected that is imaged on 1536 row, 2048 row on the area array CCD light tone degree collecting device, the position coordinates of each pixel is P (x, y), x represent pixel point place line position wherein, the x scope is 1≤x≤1536, y represent pixel point column position, the y scope is 1≤y≤2048.Face LED display viewing area to be collected, the top left corner pixel point coordinates is made as P (1,1) starting point, and the rest may be inferred.
LED display viewing area to be collected pixel is divided into 256 groups, every group of expert to the pixel spacing distance be 16, row are 16 to the pixel spacing distance, wherein 16 can 1536 be divided exactly, 16 can be divided exactly by 2048.
Every group of called after Group (i, j), the i scope is 1≤i≤16, the j scope is 1≤j≤16.Face LED display viewing area to be collected, be divided into 256 groups altogether.
When pixel coordinate P (x, y) satisfying x is 1 divided by 16 remainders, when y was 1 condition divided by 16 remainders, then this pixel belonged to Group (1,1) group;
When pixel coordinate P (x, y) satisfying x is 0 divided by 16 remainders, when y is the condition of j divided by 16 remainders, then P (x, y) pixel belong to Group (16, j) group;
When pixel coordinate P (x, y) satisfying x is i divided by 16 remainders, when y is 0 condition divided by 16 remainders, then P (x, y) pixel belongs to Group (i, 16) group;
When pixel coordinate P (x, y) satisfying x is 0 divided by 16 remainders, when y is 0 condition divided by 16 remainders, then P (x, y) pixel belongs to Group (16,16) group;
The rest may be inferred.The actual displayed of each group viewing area to be collected is that line direction pixel quantity is 96, column direction pixel quantity is 128 display pixel dot matrix.
Every group of line direction pixel quantity is 96, less than the maximum collection point 100 of area array CCD light tone degree collecting device line direction.
Every group of column direction pixel quantity is 128, less than the maximum collection point 130 of area array CCD light tone degree collecting device column direction.
Each collection can only be controlled and show the pixel that belongs to a group, and the rest of pixels point that does not belong to this group does not show.
Each group gatherer process is that the light tone degree information of three primary colours of pixel red, green, blue in organizing is gathered respectively, and three primary colours light tones of pixel red, green, blue degree information in organizing is extracted.Repeat above-mentioned steps, three primary colours light tones of pixel red, green, blue degree information in the group of 256 groups is gathered and extracted.Then three primary colours light tones of the pixel red, green, blue degree information in the group of 256 groups is aggregated into complete three primary colours light tones of pickup area pixel red, green, blue degree information according to the sequence arrangement of pixel position.
Pixel quantity in the pickup area enlarges 256 times.
Area array CCD light tone degree collecting device CCD resolution is 1392 * 1040.The maximum collection point of area array CCD light tone degree collecting device line direction quantity 100, the maximum collection point of column direction quantity 130 promptly can disposable collection 100 * 130=13000 point pixel light tone degree information.
For the LED display viewing area of one 768 row, 1024 row, the position coordinates of each pixel be P (x, y), x represent pixel point place line position wherein, the x scope is 1≤x≤768, y represent pixel point column position, the y scope is 1≤y≤1024.Face LED display, the top left corner pixel point coordinates is made as P (1,1) starting point, and the rest may be inferred.
LED display viewing area to be collected pixel is divided into 128 groups, and every group of expert is 16 to pixel spacing distance 8, row to the pixel spacing distance, wherein 768 can 8 be divided exactly, 1024 can be divided exactly by 16.Every group of line direction pixel quantity is 96, less than the maximum collection point of area array CCD light tone degree collecting device line direction quantity 100.Every group of column direction pixel quantity is 64, less than the maximum collection point of area array CCD light tone degree collecting device column direction quantity 130.
When pixel coordinate P (x, y) satisfying x is 1 divided by 8 remainders, when y was 1 condition divided by 16 remainders, this pixel belonged to Grab (1,1) group.
When pixel coordinate P (x, y) satisfying x is 1 divided by 8 remainders, when y was 2 condition divided by 16 remainders, this pixel belonged to Grab (1,2) group.
When pixel coordinate P (x, y) satisfying x is 0 divided by 8 remainders, when y is the condition of j divided by 16 remainders, then P (x, y) pixel belong to Group (8, j) group;
When pixel coordinate P (x, y) satisfying x is i divided by 8 remainders, when y is 0 condition divided by 16 remainders, then P (x, y) pixel belongs to Group (i, 16) group;
When pixel coordinate P (x, y) satisfying x is 0 divided by 8 remainders, when y is 0 condition divided by 16 remainders, then P (x, y) pixel belongs to Group (8,16) group;
The rest may be inferred, has 128 groups.
Each collection can only be controlled and show the pixel that belongs to a group, and the rest of pixels point that does not belong to this group does not show.
Each group gatherer process is that the light tone degree information of three primary colours of pixel red, green, blue in organizing is gathered respectively, and three primary colours light tones of pixel red, green, blue degree information in organizing is extracted.Repeat said process, three primary colours light tones of pixel red, green, blue degree information in the group of 128 groups is gathered and extracted.Then three primary colours light tones of the pixel red, green, blue degree information in the group of 128 groups is aggregated into complete three primary colours light tones of pickup area pixel red, green, blue degree information according to the sequence arrangement of pixel position.
Embodiment 4
Area array CCD light tone degree collecting device CCD resolution is 1392 * 1040.The maximum collection point of area array CCD light tone degree collecting device line direction quantity 100, the maximum collection point of column direction quantity 130 promptly can disposable collection 100 * 130=13000 point pixel light tone degree information.
LED display viewing area for one 1024 row 2048 row owing to gather distance limit, under the situation of minimum focus, has 768 row, 768 row pixels of display screen to be imaged on the area array CCD at most at every turn.Therefore the LED display viewing area need be divided into four viewing areas gathers.Can there be lap four viewing areas.All adopt the acquisition mode identical with embodiment 1 in each pickup area, zone to be collected is divided into each group of D, every group of expert is 8 to pixel spacing distance 8, row to the pixel spacing distance, and the display pixel that obtains each pickup area is respectively lighted chrominance information.At last four pickup area data are carried out amalgamation, form the light tone degree information of complete LED display display pixel point.
In sum, the object of the present invention is to provide a kind of LED display display pixel to light the chrominance information acquisition method, the invention is not restricted to above-mentioned execution mode.Should be understood that, for those of ordinary skills, can be improved according to the above description or conversion, and all these improvement and conversion all should belong to the protection range of claims of the present invention.
Claims (1)
1. a LED display pixel light tone degree information collecting method is characterized in that comprising the steps:
(1), the LED display viewing area to be collected pixel with the capable N row of M is divided into D group, pixel is spaced in every group, row is that Dx, row are Dy to the pixel spacing distance to the pixel spacing distance, D=Dx * Dy, and wherein Dx can be divided exactly by M, Dy can be divided exactly by N;
(2), the pixel of D group in the viewing area to be collected on the LED display is divided into groups to show control, control one group of pixel at every turn and show; Utilize each primary colours light tone degree information of pixel in each group of area array CCD light tone degree collecting device acquisition time, and each primary colours light tone degree information of pixel in organizing is extracted;
(3), D group each primary colours light tone degree information gathering of all pixels and extraction finished after, each primary colours light tone degree information of pixel in all groups is aggregated into complete LED display area pixel to be collected according to the arrangement of pixel coordinate position puts each primary colours light tone degree information.
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| CN112802426A (en) * | 2020-11-03 | 2021-05-14 | 长春希达电子技术有限公司 | LED display unit seam crossing type brightness correction method |
| CN112802426B (en) * | 2020-11-03 | 2024-02-02 | 长春希达电子技术有限公司 | LED display unit seam crossing type brightness correction method |
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| CN113299231B (en) * | 2021-05-31 | 2023-02-24 | 浙江大华技术股份有限公司 | Method and device for adjusting light-emitting parameters, storage medium and electronic device |
| CN114354142A (en) * | 2022-03-21 | 2022-04-15 | 苏州威达智电子科技有限公司 | Automatic brightness testing device of micro display screen and testing system and process thereof |
| CN114354142B (en) * | 2022-03-21 | 2022-07-29 | 苏州威达智电子科技有限公司 | Automatic brightness testing device of micro display screen and testing system and process thereof |
| CN115953981A (en) * | 2023-02-28 | 2023-04-11 | 长春希达电子技术有限公司 | Method for positioning special-shaped plane screen lamp points and method for acquiring brightness information |
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