H - Electricity – 03 – M
Patent
H - Electricity
03
M
H03M 7/30 (2006.01) G06T 9/00 (2006.01)
Patent
CA 2738144
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.
Wang Longji
Yang En-Hui
Bereskin & Parr Llp/s.e.n.c.r.l.,s.r.l.
Slipstream Data Inc.
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