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 It takes input image and a binary mask, and it produces an output image whose masked pixels have been replaced by a specified color.
NOTE: This original implementation of IMOVERLAY was superseded in R2016a by a new function, with the same name, in the Image Processing Toolbox.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.
Steve Eddins (2023). Image overlay (https://www.mathworks.com/matlabcentral/fileexchange/10502-image-overlay), MATLAB Central File Exchange. Retrieved .
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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
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Renamed to IMOVERLAY_OLD. Use the new version (R2016a) in the Image Processing Toolbox.
Based on a suggestion from Lasse, I added code to automatically convert the mask input to be logical.
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.