4.2 | 12 ratings Rate this file 284 downloads (last 30 days) File Size: 2.08 KB File ID: #10502

Image overlay

23 Mar 2006 (Updated 15 Aug 2007)

Overlay a binary mask onto an image using a specified color

File Information
Description	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 It takes input image and a binary mask, and it produces an output image whose masked pixels have been replaced by a specified color.
Acknowledgements	This submission has inspired the following: imagescnan.m v2.1 (Aug 2009)
Required Products	Image Processing Toolbox
MATLAB release	MATLAB 7.2 (R2006a)

Tags for This File
Everyone's Tags	annotation, display, gui, imoverlay mask rgb image
Tags I've Applied
Add New Tags	Please login to tag files.

Comments and Ratings (15)
10 Oct 2006	James Jones	??? Subscript indices must either be real positive integers or logicals. Error in ==> imoverlay at 54 out_red(mask) = color_uint8(1);
11 Oct 2006	Gil Hornung	I would like to overlay a picture which is not bw.
28 Apr 2007	Lennart Burg	I think it works great. Thnx
14 Jun 2007	Chai Tan	Works great. Saves me a few lines of code! :) Thanks.
18 Jul 2007	Matt Whitaker	Simple, useful and well styled and coded. Did something in my existing code similar but this is a bit faster and less memory. Steve, you might want to note in the documentation that if you have a double input outside the range of 0-1 (soemthing you typically use imagesc to display) that you would want to run mat2gray on it before passing to this function. A useful further enhancement would be either to auto detect and apply this or have an optional switch.
14 Aug 2007	B r
31 Aug 2007	Phillip SUn	great and loved it
03 Sep 2007	Steve Eddins	Matt - I added a note and an example to the documentation based on your suggestion. Thanks!
01 Dec 2007	Robert Misevski	Great tool work very well for what a needed to do.
11 Mar 2008	Carlos Adrián Vargas Aguilera	Great tool. Now I can paint NaN's in black on imagesc. Thanks
03 Aug 2008	Waleed El-Badry	that's an excellent piece of code.
04 Mar 2009	paddy84	This is an excellent bit of code. It worked perfectly fine in my case.
17 Jun 2009	Rotem	Great work! saved me some precious time...
03 Aug 2009	hima	This code was great.heyy i want the canny edge borders to be black.now they are in green colour.how to get that???
06 Nov 2009	James

Please login to add a comment or rating.

Updates
15 Aug 2007	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.

Tag Activity for this File
Tag	Applied By	Date/Time
gui	Steve Eddins	22 Oct 2008 08:19:54
display	Steve Eddins	22 Oct 2008 08:19:54
annotation	Steve Eddins	22 Oct 2008 08:19:54
imoverlay mask rgb image	Steve Eddins	22 Oct 2008 08:19:54

MATLAB Central Terms of Use

NOTICE: Any content you submit to MATLAB Central, including personal information, is not subject to the protections which may be afforded information collected under other sections of The MathWorks, Inc. Web site. You are entirely responsible for all content that you upload, post, e-mail, transmit or otherwise make available via MATLAB Central. The MathWorks does not control the content posted by visitors to MATLAB Central and, does not guarantee the accuracy, integrity, or quality of such content. Under no circumstances will The MathWorks be liable in any way for any content not authored by The MathWorks, or any loss or damage of any kind incurred as a result of the use of any content posted, e-mailed, transmitted or otherwise made available via MATLAB Central. Read the complete Terms prior to use.