Image processing system, image processing apparatus, image...

Details Image processing system, image processing apparatus, image... Image processing system, image processing apparatus, image...

2005-01-25

2005-01-25

Mehta, Bhavesh M. (Department: 2621)

Image analysis

Image compression or coding

Including details of decompression

C382S245000, C382S246000, C382S247000, C382S240000, C382S250000, C382S251000, C358S426060, C358S505000, C358S474000, C375S240020, C375S240030

Reexamination Certificate

active

06847735

ABSTRACT:
This invention has as its object to attain efficient encoding/decoding even when the processing time, memory, arithmetic cost, and the like of an apparatus are limited.Encoded image data is input to an image processing apparatus (1) to obtain transform coefficients of subbands. The transform coefficients required to decode an image from its head position line by line are encoded by Golomb coding using one line of a subband as a unit to generate a code sequence, which is output to an image output apparatus (2). The image output apparatus (2) reconstructs an image by decoding the Golomb encoded data, dequantizing the coefficients, and computing the inverse discrete wavelet transforms of the coefficients, and outputs the reconstructed image.

REFERENCES:
patent: 5657015 (1997-08-01), Nakajima et al.
patent: 6052205 (2000-04-01), Matsuura
patent: 6441754 (2002-08-01), Wang et al.
patent: 6675185 (2004-01-01), Mitchell et al.
patent: 20010008544 (2001-07-01), Ishiyama
patent: 20010019335 (2001-09-01), Takeo

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