Image compression by optimal reconstruction

Details Image compression by optimal reconstruction Image compression by optimal reconstruction

1994-05-02

1996-07-09

Chin, Tommy P.

Television

Bandwidth reduction system

382199, H04N 732

Patent

active

055349250

ABSTRACT:
A method of producing a video image from a compressed version of a source video image which has been compressed by transforming to a transform domain and quantizing the source video image in accordance with quantization constraints, including back-transforming from the transform domain and dequantizing the compressed version to produce a decompressed video image, reducing total variation in the first decompressed video image to produce a reduced variation image, transforming the reduced variation image to produce a revised transform and conforming the revised transform with the quantization constraints of the compressed version so as to produce a constrained transform, and back-transforming the constrained transform so as to produce a replica of the source video image.

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patent: 5351315 (1994-09-01), Ueda et al.
patent: 5379122 (1995-01-01), Eschbach

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