Patent ID: 8712150

Claim:
An image color processing device adapted to process a luminance data and an input chrominance data of an image, the image color processing device comprising: an edge detecting unit to receive the luminance data of the image to detect whether each pixel of the image is on an edge of an image object and correspondingly assign an edge strength to each of the pixels; a chrominance filtering unit to receive the input chrominance data of the image to output a filtered chrominance data after performing a chrominance filtering, wherein the chrominance filtering unit comprises: a sorting unit receiving the input chrominance data and taking prior N successive input chrominance data counting from the pixel to be processed to sort the N successive input chrominance data as N sorted chrominance data in numerical order; and a selection unit taking the M th largest chrominance data from the N sorted chrominance data as the filtered chrominance data of the pixel after filtering, wherein M is larger than 1, and N is larger than M; and a chrominance mixing unit configured to receive the edge strength, the filtered chrominance data, and the input chrominance data to mix the filtered chrominance data and the input chrominance data by a weighting manner according to the edge strength to obtain an output chrominance data.