| 摘要 |
In order to take into account the local illumination variations in a scene, the invention proposes a method of compensating illumination variations in which cumulative histograms are calculated for each block of an image (or view) and, in order to avoid a loss of the video coding efficiency, a cumulative histogram-based mapping function is automatically computed by a remote apparatus, such as a decoder, from only information available at that apparatus when decoding a current block of the sequence of images. The present invention relates also to a method and device of encoding and/or decoding a sequence of images which comprises means configured to implement the method of compensating illumination variations according to the invention. |
