CHEN AND LOEFFLER FAST DCT MODIFIEDALGORITHMS IMPLEMENTED IN FPGA CHIPSFOR REAL-TIME IMAGE COMPRESSION

摘要

The Discrete Cosine Transform (DCT) is one of the basic varieties oftransform coding algorithms.Moreover DCT is used in standard algorithms ofcompression of still image (JPEG) and video compression of algorithms(MPEG, H.26x).In case of discrete cosine transform of compression's imagesof algorithms there are used the blocs: 8x8 pixels.Paper presents problemsconnected with implementation of DCT algorithms in reconfigurable FPGAstructures.Authors implemented DCT transform used Chen's algorithm andLoeffler's algorithm, because these algorithms most effective for FPGAimplementation.Paper presents implementations results in Xilinx chipsXCV200BG352.