I've received several questions over the past months about the search order for the function bwlabel and whether it can be changed. Today's post discusses the search-order issue, how useful it... read more >>

Last week The MathWorks released R2008a, the ninth in a series of six-month releases. (If there's an equinox coming up, look for a new MATLAB® release!)
Here are some of the highlights especially... read more >>

Earlier this year I wrote about logical indexing and linear indexing. Now I want to finish this little indexing series with an example of a technique I call neighbor indexing. I've... read more >>

Blog reader André recently asked me how to count the number of times each color appears in an image. One short solution involves optional output arguments from the function... read more >>

This is the first post in a short series on index techniques that are particularly useful for image processing in MATLAB. I'll start with logical indexing today. Later I'll cover linear... read more >>

Toward the end of last year, it occurred to me that I had accumulated enough material on this blog to construct a "master class" on image processing in MATLAB. The response to my... read more >>

Have you ever used the distance transform? For a binary image, the distance transform is the distance from every pixel to the nearest foreground (nonzero) pixel. (Sometimes you'll see... read more >>

Earlier this year I exchanged e-mail with blog reader Craig Doolittle. Craig was writing MATLAB scripts to clean up scanned pages from old manuscripts. One of the samples he sent me was... read more >>

I'd like to welcome back guest blogger Stan Reeves, professor of Electrical and Computer Engineering at Auburn University. Stan will be writing a few blogs here about image... read more >>

Didja know about the Image Processing Toolbox function bwselect? For a blog post I wrote earlier this month, I wanted a binary image containing only the central blob indicated in red... read more >>