<table cellspacing="0" cellpadding="0" border="0" ><tr><td valign="top" style="font: inherit;">Hi All,<div><br></div><div>I would appreciate very much your help regarding the usuage of itk implementation of the canny edge filter. As you all know, there are 2 thresholds for it. My question is how should I set them without knowing the magnitude of the gradient images that I am going to apply the thresholds on. I feel blind when I tune those parameters. </div><div><br></div><div>I checked both matlab and idl implementations of this filter; in both cases the two thresholds are normalized to be choices between 0 and 1.</div><div><br></div><div>Thank you very much in advance for the help!</div><div>Hu</div><div><br></div></td></tr></table><br>