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公开(公告)号：US10373584B2
公开(公告)日：2019-08-06
申请号：US15605514
申请日：2017-05-25
申请人： Synaptics Japan GK
发明人： Masao Orio , Hirobumi Furihata , Susumu Saito , Takashi Nose , Akio Sugiyama
IPC分类号： G09G5/02
摘要： A color adjustment circuit includes: a correction processing circuit configured to generate an output image data by performing color adjustment correction on an input image data; and a correction factor calculation circuit configured to calculate correction factors used for the color adjustment correction. The correction factor calculation circuit calculates a white color distance, a complementary color distance, and an elementary color distance and calculates the correction factors based on the white color distance, the complementary color distance and the elementary color distance. The correction factors are calculated based on: white point correction parameters, top correction parameters, and intermediate correction parameters. The intermediate correction parameters are defined to control the R, G, and B grayscale values of the output image data for the case when the input image data corresponds to each of elementary colors R, G, and B, and complementary colors C, M, and Y of an intermediate grayscale value.
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公开(公告)号：US10332437B2
公开(公告)日：2019-06-25
申请号：US15592688
申请日：2017-05-11
申请人： Synaptics Japan GK
发明人： Masao Orio , Hirobumi Furihata , Susumu Saito , Takashi Nose , Akio Sugiyama
摘要： Provided is a color adjustment method for a display apparatus. The color adjustment method includes: measuring first luminance coordinate data indicating a luminance and color coordinates of a color displayed on a display device when image data corresponding to a white point is supplied to a drive circuitry; measuring second luminance coordinate data indicating luminances and color coordinates of colors displayed on the display device when image data corresponding to the white color of intermediate grayscale values are supplied to the drive circuitry; measuring third luminance coordinate data indicating a luminance and color coordinates of a color displayed on the display device for each of R, G and B elementary color points when image data corresponding to each of the R, G and B elementary color points is supplied to the drive circuitry; and calculating correction parameters based on the first to third luminance coordinate data.
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公开(公告)号：US10657870B2
公开(公告)日：2020-05-19
申请号：US16447466
申请日：2019-06-20
申请人： Synaptics Japan GK
发明人： Masao Orio , Hirobumi Furihata , Susumu Saito , Takashi Nose , Akio Sugiyama
摘要： Provided is a color adjustment method for a display apparatus. The color adjustment method includes: measuring first luminance coordinate data indicating a luminance and color coordinates of a color displayed on a display device when image data corresponding to a white point is supplied to a drive circuitry; measuring second luminance coordinate data indicating luminances and color coordinates of colors displayed on the display device when image data corresponding to the white color of intermediate grayscale values are supplied to the drive circuitry; measuring third luminance coordinate data indicating a luminance and color coordinates of a color displayed on the display device for each of R, G and B elementary color points when image data corresponding to each of the R, G and B elementary color points is supplied to the drive circuitry; and calculating correction parameters based on the first to third luminance coordinate data.
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公开(公告)号：US10657412B2
公开(公告)日：2020-05-19
申请号：US16355100
申请日：2019-03-15
申请人： Synaptics Japan GK
发明人： Hirobumi Furihata , Masao Orio , Susumu Saito , Takashi Nose , Akio Sugiyama
摘要： An image processing apparatus includes: a first circuit which calculates values f(RPi), f(GPi) and f(BPi) by applying a function f(x) to an R grayscale value RPi, a G grayscale value GPi and a B grayscale value BPi of each pixel i of a first image; a second circuit which calculates values f(RQi), f(GQi) and f(BQi) by applying the function f(x) to an R grayscale value RQi, a G grayscale value GQi and a B grayscale value BQi of each pixel i of a second image; and a similarity calculation circuit which calculates a degree of similarity between the first and second images depending on |f(RPi)−f(RQi)|, |f(GPi)−f(GQi)| and |f(BPi)−f(BQi)| associated with each pixel i of the first and second images. The function f(x) is a convex function monotonically non-decreasing in the domain of definition.
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公开(公告)号：US10235598B2
公开(公告)日：2019-03-19
申请号：US15483315
申请日：2017-04-10
申请人： Synaptics Japan GK
发明人： Hirobumi Furihata , Masao Orio , Susumu Saito , Takashi Nose , Akio Sugiyama
摘要： An image processing apparatus includes: a first circuit which calculates values f(RPi), f(GPi) and f(BPi) by applying a function f(x) to an R grayscale value RPi, a G grayscale value GPi and a B grayscale value BPi of each pixel i of a first image; a second circuit which calculates values f(RQi), f(GQi) and f(BQi) by applying the function f(x) to an R grayscale value RQi, a G grayscale value GQi and a B grayscale value BQi of each pixel i of a second image; and a similarity calculation circuit which calculates a degree of similarity between the first and second images depending on |f(RPi)−f(RQi)|, |f(GPi)−|f(GQi)| and |f(BPi)−f(BQi)| associated with each pixel i of the first and second images. The function f(x) is a convex function monotonically non-decreasing in the domain of definition.
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