Seamless multiplexing of embedded bitstreams

Details Seamless multiplexing of embedded bitstreams Seamless multiplexing of embedded bitstreams

2009-01-05

2010-11-23

Dang, Duy M (Department: 2624)

Image analysis

Image compression or coding

Including details of decompression

C382S232000

Reexamination Certificate

active

07840079

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.

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Li, J. and Lei, S., “An embedded still image coder with rate-distortion optimization”, IEEE Trans. on Image Processing, vol. 8, No. 7, pp. 913-924, Jul. 1999.

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