Finite Ridgelet Transform Toolbox (FRIT) - Version 1.0          ------------------------------------------------------FRIT is a Matlab toolbox that implements the finite ridgelet transforms.The transform algorithms implemented in this toolbox are based on thefollowing papers:1. M. N. Do and M. Vetterli, "Orthogonal finite ridgelet transform for image compression", IEEE International Conference on Image Processing (ICIP), Vancouver, Canada, September 2000.2. M. N. Do and M. Vetterli, "Image denoising using orthonormal finite ridgelet transform", Proc. of SPIE Conf. on Wavelet Applications in Signal and Image Processing VIII, San Diego, USA, August 2000.3. M. N. Do and M. Vetterli, "The finite image transform for imagerepresentation", IEEE Transactions on Image Processing, January 2003.The following invertible transforms are provided in the toolbox:FRAT	Finite Radon transform.FRATC   The MEX file (may need to be compiled before the first use)         that does the actual computation of the FRAT.FRATF  	Finite Radon transform.  This version use FFT2 and is 100% in Matlab 	but slower than FRAT.FRIT  	Finite ridgelet transform.  This is the general version of the	finite ridgelet transform.FRITO	Orthonormal finite ridgelet transform.  There are additional	restrictions on the image size and number of wavelet decomposition	levels.FRITM	Orthonormal finite ridgelet transform mixed with DCT.  Same	restriction as for FRITO.FRATFD	Folded finite Radon transform.FRITFD	Folded finite ridgelet transformAFRIT  	Adaptive finite ridgelet transform.BFRIT   Block finite ridgelet transform (test version!)The inverse transforms for those are I___, for example IFRIT.  Thescript file FRITDEMO contains examples on how to use some of thesefunctions.  In addition, the files COMPARE_NLA and COMPARE_DENOISEcompare the performance of the FRIT against other traditional transformsand produce images that included in the above papers. This toolbox requires the Wavelet Toolbox by MathWorks.  It has been testedon the Matlab Version 6.1 and the Wavelet Toolbox Version 2.1.To use the toolbox, before the first run, the two C programs FRATC andIFRATC may have to be complied into mex files.  That means, from theMatlab command window, type:	mex fratc.c 	mex ifratc.cWe provide pre-compiled mex files for several platforms.Comments, suggestions, or questions can be sent to:minh.do@ieee.orghttp://www.ifp.uiuc.edu/~minhdoSwiss Federal Institute of Technology, Lausanne, November 2001.University of Illinois at Urbana-Champaign, November 2003.