Hi nicrey,<br> see for example the following for a nice introduction to the principle. You many also want to browse the same link from a level<br>up for some very nice lecture notes on the topic by Prof. Romeny <br><a href="http://bmia.bmt.tue.nl/Education/Courses/FEV/book/pdf/05%20Multi-scale%20derivatives%20-%20Implementations.pdf">http://bmia.bmt.tue.nl/Education/Courses/FEV/book/pdf/05%20Multi-scale%20derivatives%20-%20Implementations.pdf</a><br>
<br>sid. <br><br><div class="gmail_quote">On Mon, Aug 22, 2011 at 2:12 PM, nicrey <span dir="ltr"><<a href="mailto:nicolasreyv@gmail.com">nicolasreyv@gmail.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex;">
Hi ITK Users,<br>
<br>
I want to calculate the gradient of an image. I have used the<br>
"itkGradientRecursiveGaussianImageFilter.h" function. Which is said to<br>
"Compute the gradient of an image by convolution with the first derivative<br>
of a Gaussian" is there any place where I can find the exact formula that<br>
ITK uses to create the "first derivative of the Gaussian" ? without having<br>
to go an look at the code of ITK ?<br>
<br>
Thanks,<br>
<br>
Nicolas Rey-Villamizar<br>
<br>
--<br>
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