Blog reader Ram asked a question last week that I hear fairly often: When you apply a spatial transformation to an image, how can you see the x-y coordinates when you display the image? ... 続きを読む >>

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... 続きを読む >>

When the new releases come out, I like to peruse the release notes for MATLAB. Loren and the Desktop team have already started writing about the new features in their blogs, but I thought I'd mention... 続きを読む >>

For the geoscientists in the audience who are using my upslope area functions, I just updated the files. The update fixes a problem with the computation of influence and dependence maps for data... 続きを読む >>

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... 続きを読む >>

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... 続きを読む >>

When we work on improving the speed of image processing functions in MATLAB, we are naturally interested in getting timing measurements. And we know customers are often timing their own code,... 続きを読む >>

I would like to announce new procedures for comments on this blog, as well as for associated e-mail traffic. First, post commenting is now in "moderate" mode, meaning that new comments will... 続きを読む >>

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... 続きを読む >>

Last week I posted an introduction to logical indexing. This week I want to continue with a brief discussion of linear indexing and its connection to image processing in MATLAB. Lets... 続きを読む >>