Patent ID: 6571019
Filing Date: 2003-05-27
Classification: G06T,H04N

Abstract:
In an object-based video coding system comprising a shape information encoding unit for encoding input shape information and providing reconstructed shape information and a texture information encoding unit including a transform unit, quantizer, scanning unit, and variable length coding (VLC) unit for encoding input texture information, a coded block pattern encoding apparatus comprising:a non-transparent block counter for detecting the number of non-transparent blocks within the macroblock using said input reconstructed shape information and generating first and second switching control signals according to the detected number of non-transparent blocks; a coded block pattern decision unit for generating numerical information for reading the coded block pattern according to the number of non-transparent blocks based upon said input reconstructed shape information; a first switch for coupling information generated from said coded block pattern decision unit to one of a plurality of paths according to the first switching control signal generated from said non-transparent block counter; a VLC table memory for providing the encoded coded block pattern according to information obtained through the first switch; a second switch for coupling the coded block pattern generated from said VLC table memory to an output path according to the second switching control signal generated from said non-transparent block counter; and multiplexing means for multiplexing the coded block pattern generated from said coded block pattern decision and encoding means and texture information generated from said VLC unit to provide an output.