Method, system and computer program product for optimization...

Details Method, system and computer program product for optimization... Method, system and computer program product for optimization...

H - Electricity

03

M

H03M 7/30 (2006.01) G06T 9/00 (2006.01) H04N 7/50 (2006.01)

Patent

CA 2752141

A method, system and computer software product for improving rate-distortion performance while remaining faithful to JPEG/MPEG syntax, involving joint optimization of Huffman tables, quantization step sizes and quantized coefficients of a JPEG/MPEG encoder. This involves finding the optimal coefficient indices in the form of (run, size) pairs. By employing an interative process including this search for optimal coefficient indices, joint improvement of run-length coding, Huffman coding and quantization table selection may be achieved. Additionally, the compression of quantized DC coefficients may also be improved using a trellis-structure.

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