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: (EPIC) (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:

Mailing Lists/USENET News Groups:


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