Harmonic Notes on MATLAB and Image Processing

Concepts, examples, new code, tutorials, tips, stories, history, etc.

Recently Published Posts

History of Image Display in MATLAB, Part 4: 1993-1997, IMSHOW, TRUESIZE, and Image Display Size (December 17, 2025)

The challenge of displaying images in MATLAB when your early 1990s computer monitor just didn’t have enough pixels.
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Improved Registration Algorithm for IMREGCORR (October 16, 2025)

Substantial improvements for function IMREGCORR, which registers image pairs using similarity, rigid, and translation transformations.
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Making a Simple Two-State Map with Landmarks (September 21, 2025)

Using MATLAB and Mapping Toolbox to make a simple map of two states with some point and path landmarks.
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Image Processing Example: Processing a Lake Image (September 14, 2025)

Creating a two-color thumbnail lake image from original GIS image with extraneous details.
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History of Image Display in MATLAB, Part 3: 1993, Image Processing Toolbox 1, and IMSHOW (September 3, 2025)

Image Processing Toolbox version 1, the first appearance of of IMSHOW, and the introduction of more image display models.
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History of Image Display in MATLAB, Part 2: 1990, MATLAB 4, Handle Graphics, and the IMAGE object (August 4, 2025)

MATLAB 4; Handle Graphics and its influence on modern MATLAB design; the original IMAGE object and its strengths and limitations; the first MATLAB default image.
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