SEGMENTATION APPARATUS FOR HIGH DEFINITION IMAGE SYSTEM

摘要

An apparatus for encoding a video signal comprises a processor for extracting chrominance levels for pixels in a current image frame of the video signal to generate a current chrominance image and for segmenting the generated image into a plurality of current chrominance regions to provide contour and texture information of each segmented current chrominance region; a block for deriving errors between a mean chrominance level of each segmented current chrominance region and that of each of its previous segmented chrominance regions and selecting one of the segmented previous chrominance regions which yields a minimum error to produce motion information denoting the selected segmented previous chrominance region and information representing a mean level difference between the segmented current and the selected segmented previous chrominance regions; a processor for extracting a segmented luminance region having luminance levels which corresponds to each segmented current chrominance region from the current image frame and for sub-segmenting the extracted region into a multiplicity of regions to produce contour and texture information for each sub-segmented luminance region; and a block for coding the contour information, the motion information and the difference information for each segmented current chrominance region, and the contour and texture information for each sub-segmented luminance region.