Permission granted to use and copy the code for research and educational purposes only. Sale of the code is not permitted.
The code may be redistributed so long as the original source and authors are cited.
Additional restrictions may apply to specific packages.

Code Available Online

• Maltab implementations of retinex
  
  Matlab implementation of McCann99 retinex.
  Matlab implementation of Frankle-McCann retinex.

  For more information about the code, see
  Funt, B.V., Ciurea, F. and McCann, J.
  Retinex in Matlab,
  Proceedings of the IS&T/SID Eighth Color Imaging Conference: Color Science, Systems and Applications, 2000, pp 112-121.

• Computational color constancy source code
  
  Available from here.