Method and apparatus for compression using reversible...

Details Method and apparatus for compression using reversible... Method and apparatus for compression using reversible...

2006-11-14

2009-02-17

Tran, Phuoc (Department: 2624)

Image analysis

Image compression or coding

Pyramid, hierarchy, or tree structure

C382S244000, C382S248000, C382S260000

Reexamination Certificate

active

07492955

ABSTRACT:
A compression and decompression system in which a reversible wavelet filter are used to generates coefficients from input data, such as image data. The reversible wavelet filter is an efficient transform implemented with integer arithmetic that has exact reconstruction. The present invention uses the reversible wavelet filter in a lossless system (or lossy system) in which an embedded codestream is generated from the coefficients produced by the filter. An entropy coder performs entropy coding on the embedded codestream to produce the compressed data stream.

REFERENCES:
patent: 0622741 (1994-11-01), None

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