I'd like to welcome back guest blogger Spandan Tiwari for today's post. Spandan, a developer on the Image Processing Toolbox team, posted here previously about circle finding and homomorphic filtering.... read more >>

A support call came in this week from a customer trying to use watershed to segment this image: The complaint was that calling watershed did not produce a good segmentation.Today I want to show how... read more >>

Earlier this week I wrote about the lists I keep of MATLAB and Image Processing Toolbox changes that might be relevant to the material in Digital Image Processing Using MATLAB. I've been keeping... read more >>

Today is the final post in my continental divide series. In earlier posts I have used the problem of computing the US continental divide as a vehicle for exploring data import, image... read more >>

Today's post in my continental divide series demonstrates the final computational step and shows one procedure for visualizing the Pacific and Atlantic catchment basins. In my previous... read more >>

This post is the second in my series on computing the location of the US continental divide. Today I'm going to look at the watershed transform, including how to compute and visualize it... read more >>

Every so often someone asks in comp.soft-sys.matlab for a "function like Image Processing Toolbox function foobar that works in 3-D." If I happen to see the post, I will follow up, explaining... read more >>

The notion of neighbor connectivity is discussed in most image processing textbooks. Specifically, what is the set of neighbors of a pixel? For example, a commonly-used neighborhood... read more >>

In image processing textbooks, you often see low-level image processing operations grouped into two categories: Point processes Neighborhood processes In a point process, the... read more >>

Blog reader Ramiro Massol asked for advice on segmenting his cell images, so I gave it a try. I'm not a microscopy expert, though, and I invite readers who have better suggestions than... read more >>