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From: Hashton on 1 Jun 2010 00:14
Dear all,

I have a problem concerning Matlab's radon function. The thing is I don't understand how this discrete version of Radon transform matches the continuous one.

For example, [R T]=radon(I,THETA,K) puts - according to the documentation - the line integrals corresponding to a K-vector "T" and an N-vector "THETA" in a KxN-matrix "R".

Refining now the samples, e.g. by increasing K, changes the values in R. The bigger K gets, the smaller the values in R become.

So apparently, in order to get values that approximate the continuous Radon transform, I need to rescale R. Does anyone know how?


Many thanks,
Hashton
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