Steve on Image Processing and MATLAB

Concepts, algorithms & MATLAB

How to Read and Visualize a DICOM Volume 2

Earlier this year, I learned something about DICOM datasets that surprised me. I had downloaded a Head-Neck CT+PET study, and I wanted to create a volume array in MATLAB. I tried to do this the hard way at first, and of course I got it wrong. (Spoiler: there's an easy... read more >>

Using the Color Threshold app again 3

Back in the summer I had another chance to use the Color Thresholder, a very nice app that's in the Image Processing Toolbox. I happened to come across a question on MATLAB Answers - someone was looking for a way to segment the yellow region in this image:... read more >>

Using reshape to rearrange image color components 4

I recently saw some code that transformed the RGB pixel values of an image into a Px3 matrix, such that each row contained the red, green, and blue color components of a single pixel. Today I want to show that code fragment, explain it, and then demonstrate what I think... read more >>

Color correction with a parula quilt 1

My wife, Geri Eddins, has been making a lot of quilts lately. A few months ago, I printed out these 10 colors, showed them to her, and asked, "Can you make a wall hanging quilt with this color scheme? And make it look kind of mathematical?" (Whatever that means!)... read more >>

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