• Five years ago: May, June, and July 2006

    Updated: 2011-10-21 17:34:21
    Much of the information I posted in this blog years ago is still useful today. Image processing theory hasn't been completely overturned since then, and I'm still talking about MATLAB after all. For the benefit of readers who have joined the party [...]

  • Binary image convex hull

    Updated: 2011-09-30 08:00:12
    I've been intending to mention a new function bwconvhull that was introduced in the Image Processing Toolbox last spring in the R2011a release. Now that R2011b is out, I figure I better go ahead and do it! bwconvhull computes the "convex hull [...]

  • Digital image processing using MATLAB: reading image files

    Updated: 2011-09-27 08:00:27
    Today's post is part of an ongoing tutorial series on digital image processing using MATLAB. I'm covering topics in roughly the order used in the book Digital Image Processing Using MATLAB. Contents [...]

  • “Area opening” terminology question

    Updated: 2011-09-02 18:49:43
    An experienced user of our products recently told us we got it wrong when we named bwareaopen. This function removes foreground objects from a binary image that are smaller in area than a given threshold. The user said (paraphrased) that "bwareaopen isn't doing an opening at all, [...]

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