Reversible DCT for lossless-lossy compression

Details Reversible DCT for lossless-lossy compression Reversible DCT for lossless-lossy compression

1997-04-30

2000-05-02

Rogers, Scott

Image analysis

Image compression or coding

Lossless compression

382248, 382250, 348403, 358432, G06K 936, G06T 900, H04N 712, H04N 1415

Patent

active

060582154

ABSTRACT:
A reversible Discrete Cosine Transform (DCT) is described. The reversible DCT may be part of a compressor in a system. The system may include a decompressor with a reversible inverse DCT for lossless decompression or a legacy decompressor with an inverse DCT for lossy decompression.

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patent: 5703799 (1997-12-01), Ohta
patent: 5790441 (1998-08-01), Oami et al.
-Examiner John Coules, UK Patent Office Search Report Under Section 17, 1 page (Sep. 9, 1998).
"Digital Image Processing"; pp. 343-345,351,354.

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