What: XBit
 Where:  http://www.geocities.com/%7Echengye/soft.html
         http://www.geocities.com/SiliconValley/Hills/5586/home.html
 Description: Tk image acquisition, processing, presentation and production
        extension.  It has modules for image FFT, IFFT and filtering in
        frequency domain, image calibration, convolution, geocorrection,
        statistics, classification, principal compontents, 3d display,
        orthophoto correction, capture from canvas, windows, digital cameras,
        save to/from clipboard, etc.
        Be sure to examine license.
        Currently at version 3.3 .
 Updated: 06/2001
 Contact: mailto:chengye.geo@yahoo.com  (Chengye Mao)