Patent ID: 7176939
Filing Date: 2007-02-13
Classification: G09G

Abstract:
1. Method for processing video pictures especially for dynamic false contour effect and dithering noise compensation, each of the video pictures consisting of pixels having at least one colour component, the colour component values being digitally coded with a digital code word, hereinafter called subfield code word, wherein to each bit of a subfield code word a certain duration is assigned, hereinafter called subfield, during which a colour component of the pixel can be activated for light generation, wherein it comprises the following steps: dividing each of the video pictures into areas of at least two types according to the video gradient of the picture, a specific video gradient range being allocated to each type of area, determining, for each type of area, a specific set of subfield code words dedicated to reduce the false contour effects and/or the dithering noise in the areas of said type, encoding the pixels of each area of the picture with the corresponding set of subfield code words.