Efficient Deisgn of Low Area Based H.264 Compressor and Decompressor with H.264 Integer Transform

The Video Compressor/Decompressor (CODEC) performs compression and decompression of video data by combining a Motion estimation and compensation module, Transformation module, and Entropy encoding module. Among these three modules, the spatial redundancy can be eliminated by the transformation module which exists in the spatial domain of video sequence. Discrete Cosine Transformation (DCT) is the transformation method in existing image and is a popular transformation technique for intra and inter frame video coding. This paper presents an architecture for transformation, inverse transformation, quantization and inverse quantization modules for one macro block (16 x 16 pixel region with one luma and two chroma components) with low area and minimum number of clock cycles using integer transform. H.264 Integer transform is a modified form of Discrete Cosine Transform. Using ASIC design tools a lossless design of 8 x 8 and 4x4 transforms were implemented with integer transform. The improved area and speed performance results are presented. KeywordsH.264 Compressor/Decompressor, Integer Transform, Discrete Cosine Transformation (DCT),