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The function IMOVERLAY creates a mask-based image overlay. It takes input image and a binary mask, and it produces an output image whose masked pixels have been replaced by a specified color.
NOTE: This original implementation of IMOVERLAY was superseded in R2016a by a new function, with the same name, in the Image Processing Toolbox. The version here has been renamed to IMOVERLAY_OLD.
Cite As
Steve Eddins (2026). Image overlay (https://au.mathworks.com/matlabcentral/fileexchange/10502-image-overlay), MATLAB Central File Exchange. Retrieved .
Acknowledgements
Inspired: JalaliLabUCLA/Image-feature-detection-using-Phase-Stretch-Transform, Image Sequence Display and Overlay with Binary Mask, Multi wall (COST231) Signal Propagation Models + Python Code, Visualization of multi-modal volume segmentation, 3D Ray Tracing For Indoor Radio Propagation, imagescnan.m v2.1 (Aug 2009), flattenMaskOverlay, ALPHAMASK: semi-transparent image overlay, Neuron counting, TeloTool - Terminal Restriction Fragment Analysis
General Information
- Version 1.3 (3.72 KB)
MATLAB Release Compatibility
- Compatible with any release
Platform Compatibility
- Windows
- macOS
- Linux
| Version | Published | Release Notes | Action |
|---|---|---|---|
| 1.3 | Renamed to IMOVERLAY_OLD. Use the new version (R2016a) in the Image Processing Toolbox. |
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| 1.2.0.1 | Updated license |
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| 1.2.0.0 | Based on a suggestion from Lasse, I added code to automatically convert the mask input to be logical. |
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| 1.0.0.0 | Based on a suggestion by Matt Whitaker, I added documentation and an example explaining how to use mat2gray for double / single grayscale images outside the normal [0, 1] range. |
