image_boundary, a MATLAB code which determines the pixels that lie on the boundary between the black and white portions of a simple image. The image should only involve two regions, one entirely black and one entirely white.
The information on this web page is distributed under the MIT license.
image_boundary is available in a MATLAB version and an Octave version and a Python version.
image_contrast, a MATLAB code which applies image processing techniques to increase the contrast in an image.
image_decimate, a MATLAB code which compresses an image by dropping the even rows and columns of data.
image_denoise, a MATLAB code which applies image processing techniques to remove noise from an image.
image_diffuse, a MATLAB code which uses diffusion to smooth out an image.
image_double, a MATLAB code which doubles the height and width of an image by repeating each row and column.
image_edge, a MATLAB code which demonstrates a simple technique for edge detection in an image.
image_noise, a MATLAB code which adds noise to an image.
image_quantization, a MATLAB code which demonstrates how the KMEANS algorithm can be used to reduce the number of colors or shades of gray in an image.
image_rgb_to_gray, a MATLAB code which creates a grayscale version of an RGB image.
image_threshold, a MATLAB code which makes a black and white version of a grayscale image by setting all pixels below or above a threshold value to black or white.
mesh_boundary, a MATLAB code which is given a mesh of a 2D region, formed by polygonal elements, and determines a sequence of pairs of polygonal vertices that define the boundary of the region.
poly, a data directory which contains examples of POLY files, a 2D format used by triangle and showme, for Planar Straight Line Graphs.