Graphics: Isocontoured Lines

In this series dedicated to 3D rendering, this is a preliminary post describing how to extract vectorial isocontoured lines from an image. One of the most popular algorithm is the Marching Squares algorithm.
The next step will be the computation of isosurfaces...

3D Computer Graphics: TOC

Table of Contents : Visualization of 3D Data

This series of posts is dedicated to the various techniques and algorithms used to visualize 2D and 3D data...

Fourier: Convolution and Deconvolution

Convolution is not an operation only specific of real space filters. You can use it in frequency space. Its counterpart - the deconvolution - is also very popular to enhance images.

Fourier Series: Several functions

Second post dedicated to the Fourier series [Link] with several examples of classical periodic functions.