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The FBI/Yale/Los Alamos [W]avelet-packet [S]calar [Q]uantization fingerprint compression algorithm, for Windows 3.1 or higher.
He Ouyang and M. Victor Wickerhauser
Washington University in St. Louis
This is an implementation of the WSQ algorithm as described in "IAFIS Use of the Wavelet Scalar Quantization (WSQ) Compression/ Decompression Algorithm," J. J. Werner, 8 December 1992. The implementation is designed for well-equipped IBM-type desktop computers using the Windows 3.1 operating system. It reads .BMP files and writes compressed files, and vice versa. Results are displayable on a high-resolution video monitor. The quality factor can be set under menu control. Computations are performed in integer arithmetic -- no floating-point coprocessor is needed.
(from the file)
Download [62 KB].

Look at the readme file from the program.