Method and apparatus for subband coding images

Details Method and apparatus for subband coding images Method and apparatus for subband coding images

1992-05-11

1997-05-20

Couso, Jose L.

Image analysis

Image compression or coding

Pyramid, hierarchy, or tree structure

348398, 382260, G06K 936, H04N 712

Patent

active

056319789

ABSTRACT:
This technique for coding images involves filtering the original input image into subband images using successive high-pass and low-pass filterings over a tree-shaped filter with each tree filtering stage involving re-scaling operations adjusted to keep the subband image signal dynamics substantially stable throughout the filtering tree.

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Drygajlo, A., "Butterfly Filter Banks", IEEE, 1989, pp. 594-598.
IEEE Transactions on Acoustics, Speech and Signal Processing, vol. 34, No. 5, Oct. 30, 1986, New York, pp. 1278-1288, "Subband Coding of Images" by J. W. Woods and S. D. O'Neal.
ICASSP 88, vol. 2, Apr. 11, 1988, New York, pp. 1100-1103, "Three Dimensional Sub-Band Coding of Video" by G. Karlsson and M. Vetterli.
Patent Abstracts of Japan, vol. 12, No. 88 (P-678) Mar. 23, 1988 and JP-A-62 221 076 (Toshiba) Sep. 29, 1987.
IBM Technical Disclosure Bulletin, vol. 25, No. 5, Oct. 30, 1982, "Adaptive Context Generation for Data Compression" by J. Rissanen.

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