• Visualizing regionprops ellipse measurements

    Updated: 2010-07-30 01:47:39
    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 blog. Today I want to show you how to visualize the ellipse-based measurements produced by regionprops. [...]

  • Complex surprises from fft

    Updated: 2010-07-16 19:20:22
    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 surprises people sometimes when the output of fft is unexpectedly complex. For example: [...]

  • MATLAB xUnit 3.0.1

    Updated: 2010-06-27 08:00:52
    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 stored in a package. If you're interest in the new ability to run tests inside packages, be sure [...]

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