Doug posted a recorded GUI debugging session on his Pick of the Week blog. If you want to pick up some GUI programming and debugging techniques from an expert, it's definitely worth a... 続きを読む >>

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... 続きを読む >>

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... 続きを読む >>

When I started this blog in early 2006, one of my first series of articles was called "All About Pixel Colors." These articles discussed how MATLAB associates matrix values with specific screen... 続きを読む >>

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... 続きを読む >>

Note added July 30, 2008: See this post for an update. In September I wrote about customer-reported speed issues related to TIFF files containing a very large number (thousands or tens of... 続きを読む >>

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... 続きを読む >>

Back in March I started writing about an algorithm implementation experiment for computing upslope area. Given an "image" whose pixel values are terrain elevations, the upslope area of a pixel is... 続きを読む >>

In a blog comment earlier this summer, someone asked how to find "which labeled regions have a bright spot greater than some threshold?" That's a good question. It can be done efficiently... 続きを読む >>

Since I originally posted my upslope toolbox to MATLAB Central back in August, I have heard from some experts about an issue related to NaNs in the DEM data. Specifically, some data sets... 続きを読む >>