Hi, I have added a plug-in to the registry (http://registry.gimp.org/plugin?id=4177) that some may find useful: it does edge detection using the "difference of Gaussians" method, which is widely used in computational vision. Basically it works by calculating two Gaussian blurs with different radius, and then subtracting them. The implementation is pretty fast because it uses the method from gauss_rle for blurring. The motivation for doing this is that it seems to me that the existing edge detection plug-ins distributed with Gimp are rather weak in terms of output quality (their advantage is that, because they are all just 3x3 convolutions with different kernels, they are simple and very fast). I think that this DoG plug-in, and also the Thin Line plug-in from the registry (http://registry.gimp.org/plugin?id=2128) produce results that most users would be happier with. Any feedback is welcome. Best, -- Bill ______________ ______________ ______________ ______________ Sent via the KillerWebMail system at primate.ucdavis.edu
