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Radial gradient
[gr,gt] = radgrad(im) is the radial and tangential gradient of the image im. At each pixel the image gradient vector is resolved into the radial and tangential directions.
[gr,gt] = radgrad(im, centre) as above but the centre of the image is specified as centre=[X,Y] rather than the centre pixel of im.
radgrad(im) as above but the result is displayed graphically.
© 1990-2012 Peter Corke.