SIP Toolbox
radon - Radon transform
Calling Sequence
- R = radon(im,theta)
Input Parameters
-
im:
2D image array
-
theta:
vector representing the angles, in degrees. Defaults
to 0:179. If it is a scalar, then a column vector with the
corresponding projection is returned.
Output Parameters
-
R:
matrix in which each column contains the Radon transform
for an angle.
Description
The Radon transform is the projection of the image intensity
along a radial line oriented at a specific angle
Examples
im = zeros(100,100);
im(25:75,25:75) = 1;
r=radon(im);
imshow(r,[])
im2 = iradon(r);
xbasc()
imshow(im2,[])
Authors
-
Leandro Farias Estrozi <estrozi (AT) vms DOT cnrs-gif DOT fr>
-
Ricardo Fabbri <ricardofabbri (AT) users DOT sf DOT net>
Bibliography
"The Radon Transform: Theory and Implementation", Peter Toft,
PhD Thesis, Technical University of Denmark, 1996:
http://pto.linux.dk/PhD/
Availability
The latest version of the Scilab Image Processing toolbox can be found at
http://siptoolbox.sourceforge.net
See Also
iradon, hough,