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Posted by on April 25, 2006, 7:19 pm
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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.
For fingerprint images WSQ 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.
Cognaxon released free WSQ viewer/converter v1.0.
Cognaxon WSQ viewer reads and converts between WSQ and 11 other graphic
file formats.
Supported formats for reading:
WSQ - FBI's Wavelet Scalar Quantization
BMP - Windows Bitmap Graphics
TIFF - Tagged Information File Format
PNG - Portable Network Graphics
JPEG - Joint Photographic Experts Group
RGB - Silicon Graphics International
TGA - Truevision Targa Graphic
GIF - Compuserve Graphic Interchange Format
CEL - Animator Graphic (FLC and FLI formats)
PSD - Adobe Photoshop (LAB or CMYK formats not supported)
IFF - Amiga Bitmap Graphic (8 bits)
PCX - PC Paintbrush Bitmap Graphic
Supported formats for writing:
WSQ - FBI's Wavelet Scalar Quantization
BMP - Windows Bitmap Graphics
TIFF - Tagged Information File Format (no LZW compression)
PNG - Portable Network Graphics
JPEG - Joint Photographic Experts Group
RGB - Silicon Graphics International (uncompressed)
TGA - Truevision Targa Graphic
WSQ viewer is small (less than 1 Megabyte) and fast, has image zoom
toolbar and supports accelerated navigation through files in the
directory using keys page up / page down / home / end . After
installation of WSQ viewer *.wsq files can be easily opened in Windows
Explorer with simple mouse double click.
WSQ viewer is the demo version of WSQ (FBI's Wavelet Scalar
Quantization) library add-on available as SDK for software developers.
For latest version and more information please visit:
http://www.cognaxon.com
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