Color video encoding method based on a wavelet decomposition

Details Color video encoding method based on a wavelet decomposition Color video encoding method based on a wavelet decomposition

2005-02-01

2005-02-01

Rao, Andy (Department: 2613)

Pulse or digital communications

Bandwidth reduction or expansion

Television or motion video signal

C375S240180

Reexamination Certificate

active

06850570

ABSTRACT:
The invention relates to a color video coding method using the so-called 3D-SPIHT algorithm applied to the color space constituted by the luminance plane Y and the chrominance planes U and V in the 4:2:0 format. A wavelet decomposition of the U and V planes is performed over a number of resolution levels which is the number of resolution levels of the wavelet decomposition of the luminance plane minus one. The full resolution color U or V plane may be seen as an approximation of the full resolution luminance plane, and, the size of said full resolution color U or V plane being the same as the size of the first level approximation in the multiresolution decomposition of the Y plane, the n-th resolution level of the luminance has the same size as the (n−1)-th level of the chrominance. Each pixel (i,j) of the approximation sub-band at the lowest resolution of the Y plane is associated with the pixel at the same location in the corresponding sub-band of the U and V planes.

REFERENCES:
patent: 6393060 (2002-05-01), Jeong
patent: 6466698 (2002-10-01), Creusere
patent: 000983097 (1998-01-01), None
patent: 000983032 (1999-01-01), None
Beong-jo Kim Et Al, “An Embedded Wavelet Video Coder Using Three-Dimensional Set Partitioning in Hierarchical Trees” (SPIHT), Proceedings of Data Compression Conference, Snowbird, Utah, USA, 1997,pp. 251-257.

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