How to combine images (just overlap all paixels)

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.

Answer 1

[Image Analyst]

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;

[sgb]

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]

From the help:

xor
Logical exclusive-OR
Syntax
C = xor(A, B)