Harmonic Notes on MATLAB and Image Processing

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

Recently Published Posts

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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History of Image Display in MATLAB, Part 1: Before 1990 (July 26, 2025)

A brief summary of the early years of digital image processing, and of early versions of MATLAB before 1990.
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