Image analysis – Image compression or coding
Reexamination Certificate
2005-08-08
2009-06-09
Couso, Jose L (Department: 2624)
Image analysis
Image compression or coding
Reexamination Certificate
active
07545988
ABSTRACT:
An apparatus using a compact blocked and Wavelet transform pair suppresses block artifacts in image compression systems by re-purposing one or more block transform coefficients with Wavelet coefficients. A general architecture and class of transforms is disclosed including integer types having Wavelet features but which can be processed one block at a time. An exemplary integer, non-separable two-dimensional Wavelet Transform is disclosed to partner with a Walsh-Hadamard blocked transform to serve as the core for the apparatus then tailored to function as a DCT, DST or other signal transform.
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Couso Jose L
Miles & Stockbridge P.C.
Minter, Esq. Michael A.
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