Image Over Larger Matrix, Select ROI with resizeable window
Illustrates how a smaller matrix may be 'brushed' against a larger one without overflowing.
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main executing reference usages:
[1] brushSmallerImageOverAnother.m
The objective is to illustrate how a smaller matrix may be 'brushed' against a larger one without overflowing.
Such operations are common in image processing.
If the smaller matrix is desired to start from the top left corner of the larger matrix, zero padding to the larger matrix may be an option. That is, given the smaller matrix, n by n, the larger matrix, m by m, has to be appended to a size of m + 2*(n-1) rows by m + 2*(n-1) columns.
[2] computeRegionalStatisticsOf_ROI
: brush a NxN window to compute the average value, variance, etc. of each region of interest (ROI).
* Caveat : Illustrative Purposes
If the demo has more elegant presentation, please do not hesitate to suggest and send feedback to author.
Thank you.
Regards,
Michael Chan JT
Cite As
Michael Chan (2026). Image Over Larger Matrix, Select ROI with resizeable window (https://www.mathworks.com/matlabcentral/fileexchange/29337-image-over-larger-matrix-select-roi-with-resizeable-window), MATLAB Central File Exchange. Retrieved .
General Information
- Version 1.2.0.1 (1.27 MB)
MATLAB Release Compatibility
- Compatible with any release
Platform Compatibility
- Windows
- macOS
- Linux
| Version | Published | Release Notes | Action |
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| 1.2.0.1 | . |
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| 1.2.0.0 | Added a 2nd executing reference usage:
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| 1.1.0.0 | trivial adjustment: uncommenting line 43 (for visual illustration):
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| 1.0.0.0 |
