Method and system for storing information in compressed block da

Details Method and system for storing information in compressed block da Method and system for storing information in compressed block da

1995-10-11

1998-04-28

Boudreau, Leo

Image analysis

Image compression or coding

Gray level to binary coding

382243, 358455, G06K 936, H04N 140

Patent

active

057456062

ABSTRACT:
The current invention discloses methods and devices of storing an additional piece of information along with compressed image data without increasing the compressed data size and without substantially affecting the reproduced image. To accomplish the above objectives, an additional piece of the information such as a data block image characteristic signal is inserted in certain compressed data at or near the least significant bit position. Because of the position, the compressed data does not substantially affect the de-compression process. However, the additional information is used to improve the reproduced image.

REFERENCES:
patent: 4766538 (1988-08-01), Miyoshi
patent: 5166987 (1992-11-01), Kageyama
patent: 5202771 (1993-04-01), Murayama
patent: 5247357 (1993-09-01), Israelsen

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