Image analysis – Image compression or coding – Transform coding
Reexamination Certificate
2007-02-27
2007-02-27
Couso, Jose L. (Department: 2624)
Image analysis
Image compression or coding
Transform coding
Reexamination Certificate
active
10372248
ABSTRACT:
It is an object of the present invention to prevent an image distortion from occurring by using a line memory of small memory capacity. For example, an image is decomposed into strip regions12, and each strip region12is filtered together with certain excess data14from a neighboring strip region12to prevent an image distortion from occurring at the boundary between the strip regions12while executing band decomposition on the strip region12which is smaller in size than the entire image with a smaller line memory. In the band decomposition, a line memory which supports band decomposition of, for example, 3 decomposition levels is repeatedly and recursively used, whereby band decomposition of deeper decomposition levels is executed without any problems. In this manner, line-based wavelet transform for deeper decomposition levels is executed with a small line memory. Also reverse wavelet transform is executed in the similar manner.
REFERENCES:
patent: 6546143 (2003-04-01), Taubman et al.
patent: 6701020 (2004-03-01), Chrysafis et al.
patent: 6956973 (2005-10-01), Liang et al.
Mizuno Yusuke
Sasaki Gen
Couso Jose L.
Mega Chips Corporation
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