TOOLDIAG is a collection of methods for statistical pattern recognition. The main area of application is classification. The main capabilities of the program are:

Go to the TOOLDIAG homepage with a more detailed description

Go to the directory with the latest version
(If server is down go to TOOLDIAG homepage)


UFF is a package which calculates continuous numerical descriptors from 2-dimensional curve patterns. The UNL FOURIER FEATURES (UFF) are invariant to TRANSLATIONS, ROTATIONS and SCALE CHANGES of the original pattern. This shape descriptor is a general purpose method.

UFF is listed in the following WWW-resources:

Processable example patterns

Go to the directory with the latest version
If FTP Server temporarily out of service download here


FD is a program which calculates FOURIER DESCRIPTORS from thin, closed curves. You should be familiar with the concept of Fourier Descriptors.

The relevant references are:

  1. Zahn, C. T., and Roskies, R. Z., "Fourier descriptors for plane closed curves," IEEE Trans. on Computers, vol. C-21, no. 3, pp. 269-281, 1972.
  2. Persoon, E., and Fu, K.-S., "Shape discrimination using Fourier Descriptors," IEEE Trans. Systems, Man, and Cybernetics, vol. SMC-7, no. 3, pp. 170-179, 1977.
  3. Gonzalez, R. C., and Woods, R. E., Digital Image Processing, Addison-Wesley, 1992.
Go to the directory with the latest version
The source code for UFF and FD is identical. Do not load it twice.


VVV is a didactical tool to understand viewing and projection in OpenGL.

Go to the VVV homepage with a more detailed description

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