How to combine images (just overlap all paixels)

sgb
21 Apr 2013
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I need to overlap 4 images to yield a final single image to find the image edge.
I have only binary images. Do we have any built in functions for it?
Please help me find out the correct method.

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 Accepted Answer

Image Analyst
Image Analyst on 21 Apr 2013
Edited: Image Analyst on 21 Apr 2013

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Yes, you can use imshowpair(), or imfuse() - functions included in the Image Processing Toolbox.
Or, you can simply AND or OR the binary images together:
unionBlobs = bw1 | bw2 | bw3 | bw4;
intersectionBlobs = bw1 & bw2 & bw3 & bw4;

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sgb
sgb on 22 Apr 2013
Edited: sgb on 22 Apr 2013
Yes i got it Thank you
But can you please solve another doubt for me which is how can we EX-OR the images
Image Analyst
Image Analyst on 22 Apr 2013
From the help:
xor
Logical exclusive-OR
Syntax
C = xor(A, B)

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