Rank: 27390 based on 0 downloads (last 30 days) and 0 file submitted

Ding Yuan


Personal Profile:


Watch this Author's files


Comments and Ratings by Ding Yuan View all
Updated File Comments Rating
01 Feb 2011 Image Edge Enhancing Coherence Filter Toolbox Advanced 2D/3D noise removal and edge enhancing with anisotropic diffusion filtering ( Weickert ) Author: Dirk-Jan Kroon


Thanks for sharing, your profession in matlab is very impressive. the package is really nonlinear anisotropic diffusion, not only coherence diffusion, so I strongly suggest changing the name. I found a problem in functions2D/EigenVectors2D.m the eigenvectors v1 v2 corresponds to mu2 and mu1, please check it, it can be a serious bug.

28 Jan 2011 Nonlinear Diffusion Toolbox Set of functions to perform nonlinear diffusion on images. Author: Frederico D'Almeida

Hi Frederico,

I am translating your matlab code in to IDL, I find that in the convolution step ('gsderiv.m'), the gaussian kernel is not normalized. It is done in 1D 'kernel=kernel/sum(kernel)', however, it is important that you do it like this:
kernel = exp(-.5*(kernel_grid./sigma).^2)

then you do convolution

Contact us