PRISM: a "reversed" multimedia coding paradigm
Puri, R.
Kannan Ramchandran
Dept. of Electr. Eng. & Comput. Sci., California Univ., Berkeley, CA, USA;
This paper appears in: Image Processing, 2003. ICIP 2003. Proceedings. 2003 International Conference on
Publication Date: 14-17 Sept. 2003
Volume: 1,
On page(s): I- 617-20 vol.1
ISSN: 1522-4880
ISBN: 0-7803-7750-8
INSPEC Accession Number: 7983934
Digital Object Identifier: 10.1109/ICIP.2003.1247037
Current Version Published: 2003-11-24
Abstract
In this work, we present PRISM (power-efficient, robust, high-compression, syndrome-based multimedia coding), a video coding paradigm based on the principles of coding with side information (which, unlike the classical Wyner-Ziv coding scenario Wyner, A et al. (1976), is characterized by an ambiguous state of nature characterizing the side-information Ishwar, P et al. (2003)). PRISM's architectural goals are to inherit the low encoding complexity and robustness of motion-JPEG style intra-frame video codecs while approaching the high compression efficiency of full-motion interframe video codecs. The PRISM paradigm roughly swaps the encoder-decoder complexity with respect to conventional video coding architectures through the novel concept of moving the motion compensation task from the encoder to the decoder. These traits make PRISM well-matched to uplink-rich media applications involving wireless video and security cameras, multimedia-equipped phones and PDA's etc.
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