I started writing a post today about the ConvexImage property returned by regionprops. But I got sidetracked along the way, and this post turned into a description of how to overlay a pixel grid... 続きを読む >>

I'm back to looking at M&Ms today. (Previous posts: 17-Dec-2010, 23-Dec-2010, 30-Dec-2010, 11-Jan-2011) url = 'https://blogs.mathworks.com/images/steve/2010/mms.jpg'; rgb =... 続きを読む >>

Today I return to examining this picture of M&Ms:url = 'https://blogs.mathworks.com/images/steve/2010/mms.jpg'; rgb = imread(url); imshow(rgb) Previously I showed how to convert pixel... 続きを読む >>

I'm going to take a break from looking at M&Ms this week and instead consider a question that Richard asked yesterday: "I have two binary images of the same size. I want to select... 続きを読む >>

Last week I showed this picture of M&Ms on my desk, and I used it to raise some vague questions about the definition of the color green. Today I'll use this picture as an opportunity... 続きを読む >>

"Why do you have M&Ms on your desk?" my friend Nausheen wanted to know. Well, the truth is, for playing around with color images, M&Ms are simply irresistable. url =... 続きを読む >>

I'd like to introduce Brett Shoelson as guest blogger for today. Many of you already know Brett from his work on the File Exchange Pick of the Week blog, or his posts on the... 続きを読む >>

A reader asked in a blog comment recently why a vertical line (or edge) shows up in the Fourier transform of an image as a horizontal line. I thought I would try to explain this using the... 続きを読む >>

In a recent post I demonstrated the use of bwdist (binary image Euclidean distance transform) to perform isotropic dilation. This was inspired by something that Brett asked me about. ... 続きを読む >>

Brett recently asked me about an image processing problem. One step in the problem involved finding out which pixels are within a certain distance of the foreground in a binary image. We... 続きを読む >>