Method of compressing and decompressing images

Details Method of compressing and decompressing images Method of compressing and decompressing images

2007-05-15

2007-05-15

Tran, Phuoc (Department: 2624)

Image analysis

Image compression or coding

Including details of decompression

C382S247000, C382S303000

Reexamination Certificate

active

10452720

ABSTRACT:
A method of compressing and decompressing images is disclosed for applications in compression and decompression chips with the JBIG standard. The pipeline of computing a pixel is divided into three parts: memory access, numerical operations, renormalization and byteout/bytein. Each steps takes a work cycle; therefore, three pixels are processed in parallel at the same time. In comparison, the work cycle of the prior art without pipeline improvement is longer. This method can effectively shorten the work cycle of each image data process, increasing the speed of compressing and decompressing image data.

REFERENCES:
patent: 5809176 (1998-09-01), Yajima
patent: 6882751 (2005-04-01), Kambegawa

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