公开(公告)号：US09794449B2

公开(公告)日：2017-10-17

申请号：US14900370

申请日：2014-06-25

Applicant: SILICONFILE TECHNOLOGIES INC.

Inventor： Kwang Eun Kim

IPC: H04N1/60 ,  H04N9/67 ,  H04N9/68

CPC classification number: H04N1/6008 ,  H04N9/67 ,  H04N9/68

Abstract: A method for a color correction using RGB data without a color space conversion for the color correction includes the steps of: extracting a start hue value of color coordinates from RGB input data; extracting an end hue value, which is finally modified by a color correction matrix user, from the start hue value according to each hue control value of a red color, a green color, a blue color, a yellow color, a cyan color and a magenta color (RGBYCM); converting input values R G and B, according to the end hue value, using a conversion formula for the corresponding input hue value among R, G and B conversion formulas; extracting a final saturation value from the end hue value according to an RGBYCM saturation control value; and calculating values of R, G and B according to modified start hue value, using an RGB color saturation value conversion formula.