EPIC/EPWIC EPIC is an experimental lossy image compression utility written in the C programming language. The compression algorithm is based on a biorthogonal critically-sampled dyadic wavelet decomposition and a combined run-length/Huffman entropy coder. EPIC is designed for extremely fast decoding on conventional (ie, non-floating point) hardware, at the expense of slower encoding and a slight degradation in compression quality (as compared to a good orthogonal wavelet decomposition). EPWIC is an improved version of EPIC. It is based on a wavelet pyramid decomposition whose coefficients are encoded (one bitplane at a time) using a static arithmetic encoder. The arithmetic encoder uses a generalized Laplacian (or generalized Gaussian) model of the first order statistics of the subbands.

Current Version:   ?? License Type:   Free

Home Site: http://www.cis.upenn.edu/~eero/epic.html (EPIC) http://www.cis.upenn.edu/~butch/EPWIC/index.html (EPWIC) Source Code Availability:   Yes (except EPWIC-2) Available Binary Packages: Debian Package:   No RedHat RPM Package:   No Other Packages:   No Targeted Platforms: Unix (the code was also tested on RedHat Linux and works fine) Software/Hardware Requirements: C compiler

Other Links: None Mailing Lists/USENET News Groups: None User Comments: None See A Screen Shot? (Not Yet)

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