Jointly optimized subband coding system and method

Details Jointly optimized subband coding system and method Jointly optimized subband coding system and method

1996-10-24

1999-03-30

Trammell, James P.

Data processing: measuring, calibrating, or testing

Measurement system

Statistical measurement

348398, H04N 712

Patent

active

058901027

ABSTRACT:
A subband coder with jointly optimized multistage residual quantizers and entropy coders for image coding which allows the subband coder to exploit both linear and non-linear dependencies that may exist within and across the subbands. Both inter- and intra-band dependencies are simultaneously exploited via jointly optimizing the subband coders and entropy coders in an entropy constrained optimization framework involving rate, distortion and complexity. The multistage quantization structure and the effectiveness of the statistical modeling algorithm results in an attractive balance among reproduction quality, rate and complexity.

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patent: 5485210 (1996-01-01), Lim et al.
patent: 5606370 (1997-02-01), Moon
patent: 5631978 (1997-05-01), Galand et al.

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