The MathWorks released a new product line update last week. The new release is called R2006a, thus marking the end for releases named R12, R13, R14, etc. Some of you may have noticed that... read more >>

MATLAB user Paul contacted me recently to ask how to convert 150dpi JPEGs to 300dpi TIFFs. After I asked for more information, he explained that he was working with a publisher who expected all... read more >>

In this posting I want to summarize all of the factors that control image pixel colors in MATLAB. This information is in the MATLAB documentation, but it is scattered around... read more >>

Last time, in my spatial transformations series, I introduced the head-and-shoulders outline that I like to call George (George P. Burdell). Today I want to diverge briefly from my main... read more >>

In a comp.soft-sys.matlab newsgroup post on January 17, Kevin wanted to know how the brightness/contrast control in imtool worked. Image Processing Toolbox function imtool is an image... read more >>

I learned something interesting this week in conversations with MATLAB users. By e-mail and phone I talked with two people who have been reading posts in this blog. Both have the Image Processing... read more >>

In my last post on pixel colors, I described the truecolor and indexed image display models in MATLAB, and I promised to discuss an important variation on the indexed image model. That... read more >>

Last week I posed this question: How does MATLAB associate the value of a particular matrix element with a color displayed on the screen? Let's start by exploring MATLAB's two... read more >>

Tell me, quick: What are the colors of these pixel values? 252 249 246 243 237 255 255 250 246 243 253 254 248 245... read more >>

I intend to have as few rules as possible about comments on this blog. I may add new rules as the need arises. I will delete or not answer comments that consist largely of questions about... read more >>