Encoding image signals by further transforming transformed DC si

Details Encoding image signals by further transforming transformed DC si Encoding image signals by further transforming transformed DC si

1994-09-09

1995-07-18

Young, Brian K.

Coded data generation or conversion

Digital code to digital code converters

H03M 700

Patent

active

054345677

ABSTRACT:
An image is divided into a plurality of blocks and a first transform is applied to each of the blocks to generate a plurality of first transformed blocks, wherein each of the first transformed blocks comprises a DC first transformed signal and a plurality of AC first transformed signals. A second transform is applied to the DC first transformed signals for all of the first transformed blocks to generate a plurality of second transformed signals. The second transformed signals are encoded and then the AC first transformed signals are encoded.

REFERENCES:
patent: 5157488 (1992-10-01), Pennebaker

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