<div class="gmail_quote">On Tue, Jul 20, 2010 at 3:18 AM, qi yang <span dir="ltr"><<a href="mailto:tinaqiyang@gmail.com">tinaqiyang@gmail.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;">
Hi All,<br>
<br>
Recently I am checking the source code of the Canny filter in ITK, as<br>
</blockquote><div> </div><blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;">And now it is programed in the way that only the same sigma value in<br>
each direction is allowed, but actually Gaussion filter allows<br>
different sigma values in different direction.<br></blockquote><div><br>No. The overloaded API SetVariance( array ) exists in addition to the one that accepts a single scalar value in. So you can set non-isotropic sigmas.<br>
<br><br></div></div><br>