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From: harybee B on 9 Feb 2010 07:38
Hi. I am new to using the radon transform function in matlab. I am trying to detect lines using the radon transform. However, the example given in matlab does not explicitly say how they go from obtaining (rho and theta) to the straight lines in the original image. Please could someone help urgently. Thanks! harris
From: Matt J on 9 Feb 2010 09:32
"harybee B" <divzrish(a)hotmail.co.uk> wrote in message <hkrkvc$9cf$1(a)fred.mathworks.com>...
> Hi. I am new to using the radon transform function in matlab. I am trying to detect lines using the radon transform. However, the example given in matlab does not explicitly say how they go from obtaining (rho and theta) to the straight lines in the original image. Please could someone help urgently. Thanks! harris


Well, you have

Y=radon(image);

If Y(rho,theta) has a large value, it's a strong indication that there is a line situated at distance rho from the image center, and oriented at angle theta.
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