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Posted by info on 09/27/07 04:34
For fingerprint images WSQ (Wavelet Scalar Quantization) is superior
to other lossy compression methods, such as JPEG, and was chosen by
FBI (U.S. Federal Bureau of Investigation) as the fingerprint image
compression standard. WSQ is a lossy compression method that is
well-suited for preserving the very high resolution details of
grayscale
images while maintaining high compression ratios of typically 12:1 to
15:1.
Cognaxon WSQ image library provides the easy way to add WSQ image
format support to your software projects. WSQ image library reads and
converts between WSQ and 11 other graphic file formats, it is small
(~1.5 Megabyte) and fast.
Supported formats for reading: WSQ,BMP, TIFF,TIF, JPG, JPEG, PNG, GIF,
TGA, PCX, RGB, PSD, CEL, IFF.
Supported formats for writing: WSQ, BMP, PNG, RGB, TGA.
Adding WSQ image library to your software project is very easy.
Only 2-3 steps and several lines of code are needed.
Sample projects are provided for:
GNU C Compiler GCC,
Trolltech Qt C++,
Sun Java,
PHP.
To find out more about using WSQ image library in PHP projects please
read the pages:
http://www.cognaxon.com/index.php?page=wsqlibrary_forlinux#PHP
and
http://www.cognaxon.com/index.php?page=wsqlib_phpnotes
For latest version and more information please visit:
http://www.cognaxon.com
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