We recently changed the view when you click on a category in the sidebar on the right. I haven't used categories much, but the other bloggers (Loren on the Art of MATLAB, Doug's Pick of the Week,... 続きを読む >>

At the beginning of the upslope area series, I posted code showing how to compute the direction of maximum slope for a triangular facet, and how to compute the flow direction for a pixel. This... 続きを読む >>

In photography and color science, MathWorks developer Jeff Mather's personal interests intersect with his work. He guest-blogged here last year with a post about the CIE Standard Observer. Earlier... 続きを読む >>

In my August 7th post on upslope area, I showed how to construct and solve the flow matrix to determine the upslope area for every pixel in a digital elevation model (DEM). In addition,... 続きを読む >>

At the International Conference on Image Processing last week, almost everyone who visited the MathWorks booth was already a MATLAB user. Mostly, they wanted to know "What's new?"
That question is a... 続きを読む >>

Note added July 30, 2008: See this post for an update. In a comment on my R2007b post last week, Vincent wanted to know why imread and imwrite are slow when dealing with TIFF files containing... 続きを読む >>

For the next few days, I'll be at the IEEE International Conference on Image Processing in San Antonio, Texas. If you're there, stop by the MathWorks table and say hi. PS. I've discovered... 続きを読む >>

Sharp-eyed readers of my previous post might have noticed the "Published with MATLAB® 7.5" footer at the end of the example. That's right, as Loren posted earlier this week, R2007b is now... 続きを読む >>

I saw an application recently where someone wanted to handle NaNs in an image differently depending on whether they were "interior." In other words, a set of connected NaN pixels... 続きを読む >>

One the measurements provided by regionprops is 'Centroid'. Here's an example of labeling binary objects, computing the centroid of each object, and plotting the centroid location on top... 続きを読む >>