The seamlessly multiplexed embedded codec (SMEC) and its application in image coding

The landmark JPEG 2000 image compression standard offers not only superior compression performance, but also incredible flexibility. The compressed bitstream of JPEG 2000 can be flexibly reorganized to another bitstream of different bitrate, resolution, and spatial region of interest (ROI) or a combination of any of the above. Such flexibility is achieved by multiplexing the compressed bitstream pieces of multiple code-blocks together into a combined bitstream, with the length of the code-block bitstream piece (LOCB) embedded in the combined bitstream. The LOCB serves both to reorganize the bitstream, and to decode the bitstream. It represents a significant overhead, especially since there is no correlation between the neighbor LOCBs. In this work, we introduce seamless multiplexing, and separate the information needed for the reorganization, i.e., the LOCB, from the compressed bitstream itself by using the decoder pointer to multiplex the bitstream pieces. As a result, the compressed...

• Type: Conference
• Year: 2004
• Where: ICIP
• Authors: Jin Li
• Keywords: Bitstream Pieces, Bitstream Reorganization, Code-block Bitstream Pieces, Compression Performance, ICIP 2004, Image Processing, Seamless Multiplexing