Today's blog post is dedicated to everyone whose eyes aren't as young as they used to be.In last week's blog post on pursuit curves, I showed this figure: If you ran my code exactly as I posted it,... 続きを読む >>

Here's an interesting snippet I learned while working on today's blog post: Mathematician Jacob Bernoulli asked for a logarithmic spiral to be engraved on his tombstone. Here's an example of a such a... 続きを読む >>

Update: See my 20-Dec-2019 post for how to write APNG files from MATLAB. Have you heard of animated PNG (APNG) files? Are you interested in creating them from MATLAB? They are supposed to be... 続きを読む >>

Today's blog post was inspired by an example written by my friend and Image Processing Toolbox developer, Alex Taylor. A few years back, Alex tinkered with using toolbox algorithms to achieve a... 続きを読む >>

Today I want to finish up my long-running discussion of Feret diameters. (Previous posts: 29-Sep-2017, 24-Oct-2017, 20-Feb-2018, and 16-Mar-2018.) Recall that the Feret diameter measures the... 続きを読む >>

ContentsThe Shape of a PixelWeaknesses of Using the Pixel CentersSquare PixelsDiamond PixelsCircular PixelsThe Shape of a PixelWhat is the shape of a pixel? At various times, I have a pixel as a... 続きを読む >>

Last time (if you can remember that long ago), I talked about how to find the maximum Feret diameter of a shape. The Feret diameter, sometimes called the caliper diameter, is illustrated by the diagram below. In a virtual sense, place the object to be measured inside the jaws of a caliper, with the caliper oriented at a specified angle. Close the jaws tightly on the object while maintaining that angle. The distance between the jaws is the Feret diameter at that angle.... 続きを読む >>

Last time, I wrote about finding the maximum Feret diameter for an object in a binary image, ending up with this figure: I had computed the convex hull of all the pixel corners, and then I computed... 続きを読む >>

This is the first of a few blog posts about object measurements based on a concept called the Feret diameter, sometimes called the caliper diameter. The diagram below illustrates the concept. Place... 続きを読む >>

I'd like to invite everyone to check out the new Deep Learning blog that just launched today on MATLAB Central. I happen to know the author, and he's an OK... 続きを読む >>