Compression/decompression method for image data

Details Compression/decompression method for image data Compression/decompression method for image data

1994-06-21

1995-07-11

Rogers, Scott A.

Facsimile and static presentation processing

Facsimile

Auxiliary signal

348420, H04N 1415

Patent

active

054326150

ABSTRACT:
A compression/decompression method for image data allows addition of a code amount control amount in units of data of one block without necessitating an excessive header capacity. In compression, a quantization conversion coefficient of a quantization conversion coefficient set is replaced with a code amount control amount, and a resulted quantization conversion coefficient set is coded, whereafter a quantization coefficient of a quantization coefficient set corresponding to the code amount control amount of the quantization conversion coefficient set is changed to 0. In decompression, the quantization coefficient set is extracted, and coded data are decoded in units of data of one block. Then, the code amount control amount is extracted from the quantization conversion coefficient set of the decoded data.

REFERENCES:
patent: 4974078 (1990-11-01), Tsai
patent: 5337049 (1994-08-01), Shimoda

Affiliated with

Also associated with

Rating

Compression/decompression method for image data does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Compression/decompression method for image data, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Compression/decompression method for image data will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-507395