Image processing apparatus

Details Image processing apparatus Image processing apparatus

1995-05-17

1996-11-26

Boudreau, Leo

Image analysis

Image compression or coding

Pyramid, hierarchy, or tree structure

382299, G06K 936, G06K 946

Patent

active

055794122

ABSTRACT:
In an image processing apparatus, image data having a first resolution read from a first image memory is encoded by an arithmetic encoder and is converted into image data having a second resolution by an image reduction unit, and the image data having the second resolution is stored in a second image memory. Thereafter, the image data having the second resolution read from the second image memory is encoded by the arithmetic encoder and is converted by the image reduction unit into image data having a third resolution, and is stored in the first image memory in which the image data having the first resolution has been stored.

REFERENCES:
patent: 4742558 (1988-05-01), Ishibashi et al.
patent: 4903317 (1990-02-01), Nishihara et al.
patent: 5231679 (1993-07-01), Matsuura et al.
Signal Processing Image Communication, vol. 4, No. 2, Apr. 1992, pp. 103-111, Hampel et al., "Technical features of the JBIG standard for progressive bi-level image compression."5
Fitzpatrick, Cella, Harper & Scinto

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