Patent ID: 8400465

Claim:
Method of transmission of at least one video sequence of images that is divided into a plurality of groups G 1 , G 2 , . . . , G k , . . . , G V of successive images, comprising, for each group G k of successive images, the following steps: transmitting, from an emitter, source color values that represent image(s) of said group G k in a source color space, applying a color transform adapted to transform transmitted source color values into destination color values that represent image(s) of said group G k into a destination color space, by using a resultant color transform look up table that is related to said group G k , wherein, for said color transformation: before the transmission of the source color values of the images of said each group G k , generating a partial color transform look up table {(R h ,G h ,B h ,R′ h ,G′ h ,B′ h )\h∈[1,Ñ Gk ]} related to said group G k from a global color transform look up table representing said color transform, the size Ñ Gk of said partial color transform look up table being smaller than the size (T 3 ) of said global color transform look up table, transmitting said generated partial color transform look up table of said group G k , and reconstructing said resultant color transform look up table related to said group G k by combining the transmitted partial color transform look up table of said group G k with all the other partial color transform look up tables that have been previously transmitted and that are related to other groups of successive images, wherein the generation of the different partial color transform look up tables is performed such that none of these different partial color transform look up tables overlaps with another one; wherein, if said source color values are transmitted through an image channel having an image bandwidth BWIM and if a generated partial color transform look up table of said group G k is transmitted through a color transform channel having a color transform bandwidth BWCT Gk , then the size Ñ Gk of this partial color transform look up table is inferior or equal to: Q×M G(k−1) /(1+log 2 T/D)×BWCT Gk /BWIM, where Q is the number of pixels within each transmitted image, M G(k−1) is the number of images in the previous group G k−1 of transmitted images, and D is the number of bits for a given color value.