Steve on Image Processing with MATLAB

Image processing concepts, algorithms, and MATLAB

Posts 521 - 530 of 597

B = PCS 3

Every now and then, a visitor to my office will ask, "Hey, what does that equation on your whiteboard mean?" So how about it, dear readers? What does "B = PCS" mean? Post your... read more >>

Image processing tools on the MATLAB Central File Exchange

Last week I posted a link to some bilateral filtering MATLAB code on the Web. A commenter quickly pointed out that there was also an implementation available on the MATLAB Central File... read more >>

Getting MATLAB code from blog postings – An update 6

Loren and I frequently use the MATLAB publish feature to create our blog posts. Back in October, we started using some JavaScript in our blogs so you could click on a link to get the original... read more >>

POLY2MASK and ROIPOLY – Part 2

I'm familiar with two basic ways to determine whether a point is inside a polygon. The first is to compute the winding number, which is the number of times that a closed curve encircles the... read more >>

Seen on the Web: Bilateral filtering in MATLAB 14

This looks interesting: Medical Image Processing: Bilateral Filtering in MATLAB. It includes MATLAB code.
By the way, we have been experiencing blog database problems in the last 12 hours or so. We... read more >>

POLY2MASK and ROIPOLY – Part 1 19

This is the first of several blogs about the algorithm behind poly2mask and roipoly. poly2mask takes a set of polygon vertices and produces a binary mask image. The binary mask has 1s for... read more >>

3-D blood vessel tracing 2

We had a visitor from Harvard Medical School and Massachusetts General Hospital here at MathWorks headquarters in November. Alex Tyrrell is a postdoctoral fellow at the Edwin Steele Laboratory... read more >>

Separable convolution: Part 2 25

Back in October I introduced the concept of filter separability. A two-dimensional filter s is said to be separable if it can be written as the convolution of two one-dimensional filters v and... read more >>

Tetrahedral interpolation for colorspace conversion 2

The Image Processing Toolbox function applycform can convert colors based on ICC profiles. ICC standards for the International Color Consortium, and an ICC profile typically contains... read more >>

Old habits 4

Last time I showed off custom data cursors with a little utility function that displays object labels as data cursors: My code used label2rgb to display a "colorized" label... read more >>

Posts 521 - 530 of 597

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