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edge detection
E = icanny(im, options) is an edge image obtained using the Canny edge detector algorithm. Hysteresis filtering is applied to the gradient image: edge pixels > th1 are connected to adjacent pixels > th0, those below th0 are set to zero.
'sd', S | set the standard deviation for smoothing (default 1) |
'th0', T | set the lower hysteresis threshold (default 0.1 x strongest edge) |
'th1', T | set the upper hysteresis threshold (default 0.5 x strongest edge) |
Oded Comay, Tel Aviv University, 1996-7.
© 1990-2012 Peter Corke.