Image encoding apparatus and method for generating and encoding

Details Image encoding apparatus and method for generating and encoding Image encoding apparatus and method for generating and encoding

1997-01-09

1998-04-28

Vu, Kim

Image analysis

Image compression or coding

Pyramid, hierarchy, or tree structure

3582612, 358539, H04N 1417

Patent

active

057456070

ABSTRACT:
Binary color image data outputted by a color scanner is stored in three buffers for respective ones of the color components red, blue and green. First the red data in one buffer is selected by a selector and stored in a first frame memory, then the other two buffers are selected one after the other to store the blue data in the first frame memory after the red data and the green data after the blue data. The image data thus constructed in the first frame memory is copied to a second frame memory, after which hierarchical encoding is performed by the second frame memory and a third frame memory and an encoder. When the encoding is concluded, code that has been stored in a code buffer is stored in a storage device following a header, which has been generated by a header processor, and image attribute information. Accordingly, control of the coder at the time of hierarchical encoding is facilitated and an image conforming to the attributes of the original image can be reproduced.

REFERENCES:
patent: 5185813 (1993-02-01), Tsujimoto
patent: 5317428 (1994-05-01), Osawa et al.
patent: 5335088 (1994-08-01), Fan
patent: 5361147 (1994-11-01), Katayama et al.
patent: 5636033 (1997-06-01), Maeda
"Binary Image Hierarchical Encoding System--JBIG Algorithm" Gazo Denshi Gakkaishi, vol. 20, No. 1.

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