DYNAMIC GAMUT CONTROL

摘要

A method of dynamic gamut control comprises the step of controlling (LD) intensities of at least a subset (PR, PG, PB) of a set of color primaries (PR, PG, PB, PW) associated with corresponding sub-pixels (RP, GP, BP, WP) of a display device. The method further comprises the step of searching (PC) for a minimal intensity value (Ra; Ga; Ba) of one of the color primaries of the subset (PR; PG; PB) being adjusted, to obtain together with the other color primaries (WP) of the set of color primaries (PR, PG, PB, PW) an adjusted color gamut (GGl; GRl; GBl; GG2; GR2) still containing all the colors of the set of colors (S) by: for each color of the set of colors (S), determining (PC) the minimal intensity value (Ra; Ga; Ba) of the color primary being adjusted to obtain the adjusted color gamut (GGl; GRl; GBl; GG2; GR2) wherein the selected color of the set of colors (S) lies substantially on a boundary of the adjusted color gamut (GGl; GRl; GBl; GG2; GR2), and selecting (PC) a maximum value of the determined minimal intensity values (Ra; Ga; Ba) of the color primary being adjusted.