Legacy ImageMagick Discussions Archive

I am wondering if there is a "proper" weighting for a Discrete Laplacian operator in which the result values are not chosen for edge enhancement but for the closest representation to del2x plus del2y. For example, two common Laplacians are: [0, -1, 0; -1, 4, -1; 0, -1, 0] and [-1, -1, -1; -1, 8, -1 ...

Dear Fred,

Your paper is a great help and I'll cite it as a source if that's all right. I will also investigate the books you mentioned.

Thanks,
Eric

Greetings, I found IM's information page on discrete Laplace operators ( http://www.imagemagick.org/Usage/convolve/#laplacian ) to be very helpful to some scientific computing I am doing. While I can find some academic discussions of discrete Laplacians, I have found only a couple of references that ...