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 31 other graphic file formats, it is small (~
1.5 Megabyte) and fast, and has graphics format conversion utility.
Supported formats for reading: WSQ, BMP, TIFF, TIF, JPG, JPEG, JPE,
PNG, GIF, PSP, JFIF, RLE, DIB, TGA,WIN,VST,VDA,ICB, FAX, EPS, PCX, PCC,
SCR, RPF, RLA, SGI, RGBA, RGB, BW, PSD, PDD, PPM, PGM, PBM, CEL, PIC,
PCD, CUT, IFF, ICO, WMF, EMF.
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.
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: Microsoft Visual C++ / Microsoft
Visual C++ .NET,
Microsoft Visual C# .NET,
Microsoft Visual Basic,
Microsoft Visual Basic .NET,
Borland C++ Builder,
Borland Delphi,
Sun Java,
Compaq Visual Fortran,
PowerBASIC.
For latest version and more information please visit:
http://www.cognaxon.com
