The Image Processing Toolbox function regionprops gives you measurements of shape-based measurements of image regions. It's pretty useful, and I have shown many examples of it on this... 続きを読む >>

One of the discrete-time Fourier transform properties that many people learn is that if a sequence is conjugate symmetric, , then the Fourier transform is real. Therefore it... 続きを読む >>

I've been bothered recently by a MATLAB terminology question: How should we describe the dim argument in functions such as sum? The documentation for sum says: B = sum(A,dim) sums along... 続きを読む >>

On June 16 I let you know about a new version of MATLAB xUnit that I posted on the MATLAB Central File Exchange. Since then I submitted another update that fixed a problem with running unit tests... 続きを読む >>

In my Fourier transform series I've been trying to address some of the common points of confusion surrounding this topic. For today's espisode I want to look at how to use the fft... 続きを読む >>

03-Aug-2016 update: MATLAB xUnit is now in a different location. It is currently maintained by Paul Sexton. In February 2009 I posted MATLAB xUnit, a unit testing framework, to the MATLAB... 続きを読む >>

Today offered more excitement than usual at MathWorks headquarters in Natick, Massachusetts. We got to destroy a building! Well, we got a good start on it anyway.
Let me back this story up a bit. In... 続きを読む >>

I recently asked for your advice about how to continue my Fourier transform series. I appreciate all the enthusiastic and helpful responses. I'd like to continue focusing on some basic points... 続きを読む >>

If you're into multiple view geometry and computer vision and you're looking for a funny, enjoyable 3 min 15 sec diversion, you might want to look at The Fundamental Matrix Song. Very... 続きを読む >>

Hi folks, You might be interested in Kelly's example showing how to get Gulf of Mexico oil-spill images using the WMS (Web Map Service) features in the Mapping Toolbox. The example is over... 続きを読む >>