version (3.91 KB) by David Legland
Add colored markers to an image, that can be 2D or 3D, grayscale or color.


Updated 24 Sep 2010

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Add a colored layer to a base image, whatever the dimension (2D or 3D) and the type (grayscale of color) of the base image.

Overlays are given by pairs MASK + color. The mask is a binary image the same size as the base image. The color parameter can be either a rgb triplet (like [1 0 0] for red), or a color character (like 'g', 'w'...).

It is also possible to specify another image as 'color', in this case the pixels of the base image within the mask will be replaced by the pixels of the 'color' image.

The aim of this function was to be easy to use, without spending time in conversion between 2D/3D and color grayscale.

Please send bug reports directly to authour (david dot legland at grignon dot inra dot fr).

Cite As

David Legland (2022). imOverlay (, MATLAB Central File Exchange. Retrieved .

MATLAB Release Compatibility
Created with R2009b
Compatible with any release
Platform Compatibility
Windows macOS Linux

Inspired: register_H

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