Image analysis – Image compression or coding
Reexamination Certificate
2003-06-20
2009-02-24
Dang, Duy M (Department: 2624)
Image analysis
Image compression or coding
Reexamination Certificate
active
07496234
ABSTRACT:
A “seamless multiplexer,” as described herein, provides a flexible and efficient system and method for multiplexing embedded coded bitstreams. Further, unlike the conventional JPEG 2000 standard, the seamless multiplexer is capable of decoding multiplexed encoded bitstreams without the need to use a demultiplexing aide as overhead in the encoded signal. In general, the seamless multiplexer provides a novel approach for multiplexing code block bitstreams by using a “decoder pointer,” for multiplexing multiple embedded bitstreams without the use of a demultiplexing aide. Consequently, the seamless multiplexer not only reduces any multiplexing overhead, but also allows much smaller granularity of access in reshaping the compressed input signal. In addition, in one embodiment, the seamless multiplexer also uses dependencies between coefficient blocks to further improve overall compression efficiency.
REFERENCES:
J. Shapiro, “Embedded Image Coding Using Zerotrees of Wavelet Coefficients”, IEEE Trans. On Signal Processing, vol. 41, pp. 3445-3462, Dec. 1993.
D. Taubman, “High performance scalable image compression with EBCOT”, IEEE Trans. On Image Processing, vol. 9, No. 7, pp. 1158-1170, Jul. 2000.
J. Li and H. Sun, “A virtual media (Vmedia) interactive image browser”, accepted by IEEE Trans. On Multimedia, undated/unavailable pub. date.
J. Li and S. Lei, “An embedded still image coder with rate-distortion optimization”, IEEE Trans. On Image Processing, vol. 8, No. 7, pp. 913-924, Jul. 1999.
Dang Duy M
Lyon & Harr LLP
Microsoft Corporation
Watson Mark A.
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