Display apparatus for reducing an effect of cross-talk and method for controlling same
A display apparatus includes a display including a plurality of pixels; a memory storing a cross-talk weight for each gradation of adjacent pixels corresponding to a gradation value of a target pixel; and at least one processor configured to: obtain a gradation value of each pixel included in at least one line of pixels among the plurality of pixels, obtain histogram information indicating a number of pixels corresponding to each gradation section based on the obtained gradation value of each pixel in the at least one line of pixels, identify an amount of cross-talk corresponding to a target pixel based on the histogram information and the cross-talk weight for each gradation of adjacent pixels corresponding to a gradation value of the target pixel, and obtain a gradation correction value of the target pixel based on the identified amount of cross-talk.
1 . A display apparatus comprising:
a display comprising a plurality of pixels;
a memory storing a cross-talk weight for each gradation of adjacent pixels corresponding to a gradation value of a target pixel included in a pixel line among the plurality of pixels; and
at least one processor configured to:
obtain a gradation value of each pixel included in at least one line of pixels among the plurality of pixels,
obtain histogram information indicating a number of pixels corresponding to each gradation section based on the obtained gradation value of each pixel in the at least one line of pixels,
identify an amount of cross-talk to which the target pixel is influenced by adjacent pixels based on the number of pixels corresponding to each gradation section according to the histogram information and the cross-talk weight for each gradation of adjacent pixels corresponding to the gradation value of the target pixel,
obtain a gradation correction value of the target pixel based on the identified amount of cross-talk, and
obtain a corrected gradation value of the target pixel based on the obtained gradation correction value, and
wherein the at least one processor is further configured to identify the amount of crosstalk by integrating values obtained by multiplying the number of pixels corresponding to each gradation section in the histogram information, to which the target pixel included in the pixel line among the plurality of pixels is mapped, with a cross-talk weight corresponding to each gradation section.
2 . The display apparatus of claim 1 , wherein the cross-talk weight for each gradation of adjacent pixels corresponding to the gradation value of the target pixel comprises:
a cross-talk weight for each gradation of an adjacent pixel corresponding to a first gradation value of the target pixel and a cross-talk weight for each gradation of an adjacent pixel corresponding to a second gradation value of the target pixel.
3 . The display apparatus of claim 2 , wherein the cross-talk weight for each gradation of the adjacent pixel corresponding to the first gradation value of the target pixel comprises:
based on the target pixel having the first gradation value, a cross-talk weight for each gradation of the adjacent pixel is according to a distance between the target pixel and the adjacent pixel, and
wherein the cross-talk weight for each gradation of the adjacent pixel corresponding to the second gradation value of the target pixel comprises:
based on the target pixel having the second gradation value, a cross-talk weight for each gradation of the adjacent pixel is according to the distance between the target pixel and the adjacent pixel.
4 . The display apparatus of claim 1 , wherein the at least one processor is further configured to:
divide a gradation range into a plurality of gradation sections, and
identify the number of pixels corresponding to each of the plurality of gradation sections based on the obtained gradation value for each pixel to obtain the histogram information.
5 . The display apparatus of claim 4 , wherein the at least one processor is further configured to:
divide a first gradation range that is smaller than a threshold value in the gradation range into a plurality of gradation sections having a first length, and
divide a second gradation range that is greater than or equal to the threshold value in the gradation range into a plurality of gradation sections having a second length that is longer than the first length to obtain the histogram information.
6 . The display apparatus of claim 1 , wherein the cross-talk weight for each gradation of adjacent pixels corresponding to the gradation value of the target pixel comprises:
a cross-talk weight for each gradation of at least one of an R sub-pixel, a G sub-pixel, or a B sub-pixel of an adjacent pixel corresponding to each gradation value of an R sub-pixel of the target pixel;
a cross-talk weight for each gradation of at least one of the R sub-pixel, the G sub-pixel, or the B sub-pixel of the adjacent pixel corresponding to each gradation value of a G sub-pixel of the target pixel; and
a cross-talk weight for each gradation of at least one of the R sub-pixel, the G sub-pixel, or the B sub-pixel of the adjacent pixel corresponding to each gradation value of a B sub-pixel of the target pixel.
7 . The display apparatus of claim 1 , wherein the at least one processor is further configured to:
obtain a corrected gradation value of a first target pixel included in a first line of pixels among the plurality of pixels, based on a gradation value of each pixel included in the first line, and
obtain a corrected gradation value of a second target pixel included in a second line of pixels among the plurality of pixels, based on a gradation value of each pixel included in the second line.
8 . The display apparatus of claim 1 , wherein each of the plurality of pixels comprises at least one light emitting diode (LED).
9 . A method for controlling a display apparatus including a plurality of pixels, the method comprising:
obtaining a gradation value of each pixel included in at least one line of pixels among the plurality of pixels;
obtaining histogram information indicating a number of pixels corresponding to each gradation section based on the obtained gradation value of each pixel in the at least one line of pixels;
identifying an amount of cross-talk to which a target pixel is influenced by adjacent pixels based on the number of pixels corresponding to each gradation section according to the histogram information and a cross-talk weight for each gradation of adjacent pixels corresponding to a gradation value of the target pixel, wherein the target pixel is included in a pixel line among the plurality of pixels;
obtaining a gradation correction value of the target pixel based on the identified amount of cross-talk; and
obtaining a corrected gradation value of the target pixel based on the obtained gradation correction value, and
wherein the identifying comprises identifying the amount of cross-talk by integrating values obtained by multiplying the number of pixels corresponding to each gradation section in the histogram information, to which the target pixel included in the pixel line among the plurality of pixels is mapped, with a cross-talk weight corresponding to each gradation section.
10 . The method of claim 9 , wherein the cross-talk weight for each gradation of adjacent pixels corresponding to the gradation value of the target pixel comprises:
a cross-talk weight for each gradation of an adjacent pixel corresponding to a first gradation value of the target pixel and a cross-talk weight for each gradation of an adjacent pixel corresponding to a second gradation value of the target pixel.
11 . The method of claim 10 , wherein the cross-talk weight for each gradation of the adjacent pixel corresponding to the first gradation value of the target pixel comprises:
based on the target pixel having the first gradation value, a cross-talk weight for each gradation of the adjacent pixel is according to a distance between the target pixel and the adjacent pixel, and
wherein the cross-talk weight for each gradation of the adjacent pixel corresponding to the second gradation value of the target pixel comprises:
based on the target pixel having the second gradation value, a cross-talk weight for each gradation of the adjacent pixel is according to the distance between the target pixel and the adjacent pixel.
12 . The method of claim 9 , wherein the obtaining the histogram information comprises:
dividing a gradation range into a plurality of gradation sections, and
identifying the number of pixels corresponding to each of the plurality of gradation sections based on the obtained gradation value for each pixel.
13 . The method of claim 12 , wherein the dividing the gradation range into a plurality of sections comprises:
dividing a first gradation range that is smaller than a threshold value in the gradation range into a plurality of gradation sections having a first length, and
dividing a second gradation range that is greater than or equal to the threshold value in the gradation range into a plurality of gradation sections having a second length that is longer than the first length.
14 . The method of claim 9 , wherein the cross-talk weight for each gradation of adjacent pixels corresponding to the gradation value of the target pixel comprises:
a cross-talk weight for each gradation of at least one of an R sub-pixel, a G sub-pixel, or a B sub-pixel of an adjacent pixel corresponding to each gradation value of an R sub-pixel of the target pixel;
a cross-talk weight for each gradation of at least one of the R sub-pixel, the G sub-pixel, or the B sub-pixel of an adjacent pixel corresponding to each gradation value of a G sub-pixel of the target pixel; and
a cross-talk weight for each gradation of at least one of the R sub-pixel, the G sub-pixel, or the B sub-pixel of an adjacent pixel corresponding to each gradation value of a B sub-pixel of the target pixel.
15 . The method of claim 9 , further comprising:
obtaining a corrected gradation value of a first target pixel included in a first line of pixels among the plurality of pixels, based on a gradation value of each pixel included in the first line; and
obtaining a corrected gradation value of a second target pixel included in a second line of pixels among the plurality of pixels, based on a gradation value of each pixel included in the second line.
16 . A non-transitory computer-readable medium configured to store computer instructions for a display apparatus including a plurality of pixels to perform an operation when executed by a processor of the display apparatus, the operation comprising:
obtaining a gradation value of each pixel included in at least one line of pixels among the plurality of pixels;
obtaining histogram information indicating a number of pixels corresponding to each gradation section based on the obtained gradation value of each pixel in the at least one line of pixels;
identifying an amount of cross-talk to which a target pixel is influenced by adjacent pixels based on the number of pixels corresponding to each gradation section according to the histogram information and a cross-talk weight for each gradation of adjacent pixels corresponding to a gradation value of the target pixel, wherein the target pixel is included in a pixel line among the plurality of pixels;
obtaining a gradation correction value of the target pixel based on the identified amount of cross-talk; and
obtaining a corrected gradation value of the target pixel based on the obtained gradation correction value, and
wherein the identifying comprises identifying the amount of cross-talk by integrating values obtained by multiplying the number of pixels corresponding to each gradation section in the histogram information, to which the target pixel included in the pixel line among the plurality of pixels is mapped, with a cross-talk weight corresponding to each gradation section.
17 . The non-transitory computer-readable medium of claim 16 ,
wherein the cross-talk weight for each gradation of adjacent pixels corresponding to the gradation value of the target pixel comprises:
a cross-talk weight for each gradation of an adjacent pixel corresponding to a first gradation value of the target pixel and a cross-talk weight for each gradation of an adjacent pixel corresponding to a second gradation value of the target pixel.
18 . The non-transitory computer-readable medium of claim 17 ,
wherein the cross-talk weight for each gradation of the adjacent pixel corresponding to the first gradation value of the target pixel comprises:
based on the target pixel having the first gradation value, a cross-talk weight for each gradation of the adjacent pixel is according to a distance between the target pixel and the adjacent pixel, and
wherein the cross-talk weight for each gradation of the adjacent pixel corresponding to the second gradation value of the target pixel comprises:
based on the target pixel having the second gradation value, a cross-talk weight for each gradation of the adjacent pixel is according to the distance between the target pixel and the adjacent pixel.
19 . The non-transitory computer-readable medium of claim 16 ,
wherein the obtaining the histogram information comprises:
dividing a gradation range into a plurality of gradation sections, and
identifying the number of pixels corresponding to each of the plurality of gradation sections based on the obtained gradation value for each pixel.
20 . The non-transitory computer-readable medium of claim 19 ,
wherein the dividing the gradation range into a plurality of sections comprises:
dividing a first gradation range that is smaller than a threshold value in the gradation range into a plurality of gradation sections having a first length, and
dividing a second gradation range that is greater than or equal to the threshold value in the gradation range into a plurality of gradation sections having a second length that is longer than the first length.