Method for correcting color using RGB data

A method for correcting color using red color, green color and blue color (RGB) data, comprising steps of:

• (a) extracting a start hue value of color coordinates from RGB input data;
• (b) 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);
• (c) 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,
• wherein if the end hue value is ranged from 60 to 120, calculating R as the maximum value of the corresponding pixel, B as the minimum value of the corresponding pixel and G using G conversion formula of “G=Min+({circle around (b)}/60)×(Max−Min)”;
• if the end hue value is ranged from 0 to 60, calculating R as the maximum value of the corresponding pixel, B as the minimum value of the corresponding pixel and R using R conversion formula of “R=Min−({circle around (b)}/60−2)×(Max−Min)”;
• if the end hue value is ranged from 120 to 180, calculating G as the maximum value of the corresponding pixel, R as the minimum value of the corresponding pixel and B using B conversion formula of “B=Min−({circle around (b)}/60−2)×(Max−Min)”;
• if the end hue value is ranged from 180 to 240, calculating B as the maximum value of the corresponding pixel, R as the minimum value of the corresponding pixel and G using G conversion formula of “G=Min−({circle around (b)}/60−4)×(Max−Min)”;
• if the end hue value is ranged from 240 to 320, calculating B as the maximum value of the corresponding pixel, G as the minimum value of the corresponding pixel and R using R conversion formula of “R=Min−({circle around (b)}/60−4)×(Max−Min)”;
• if the end hue value is ranged from 320 to 360, calculating R as the maximum value of the corresponding pixel, G as the minimum value of the corresponding pixel and B using B conversion formula of “B=Min−({circle around (b)}/60−4)×(Max−Min)”,
• where the “Max” denotes the maximum value of the RGB, the “Mid” denotes an intermediate value of the RGB, the “Min” denotes the minimum value of the RGB, and {circle around (b)} denotes the end hue value;
• (d) extracting a final saturation value from the end hue value according to an RGBYCM saturation control value;
• and
• (e) calculating values of R, G and B according to modified start hue value, using an RGB color saturation value conversion formula.

A method for correcting color using red color, green color and blue color (RGB) data, comprising steps of:

• (a) extracting a start hue value of color coordinates from RGB input data;
• (b) 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):
• (c) 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;
• (d) extracting a final saturation value from the end hue value according to an RGBYCM saturation control value;
• and
• (e) calculating values of R, G and B according to modified start hue value, using an RGB color saturation value conversion formula, wherein the RGB color saturation value conversion formula includes a maximum conversion formula of “Max+{circle around (b)}×(Max−Mid)/(Max×(Max−Min)” and a minimum conversion formula of “Min-{circle around (b)}+(Max−Mid)/(Max−Min)”, where the “Max” denotes a maximum value of RGB, the “Mid” denotes an intermediate value of RGB, the “Min” denotes a minimum value of RGB, and the {circle around (b)} denotes the end hue value.