Check if a binary image is within a particular binary area
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Elysi Cochin
el 24 de Abr. de 2022
Comentada: DGM
el 25 de Abr. de 2022
I have a binary image BW_large, and another binary image BW_small
How do I check if BW_small is within BW_large?
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DGM
el 24 de Abr. de 2022
Editada: DGM
el 24 de Abr. de 2022
I'm assuming your images are the same size, but contain objects of differing size.
The intersection of two binary images A and B is
intAB = A & B;
If the intersection is equal to one of the two images, then that image is wholly contained within the other.
BinA = isequal(B,intAB);
Otherwise, if you have different size images which contain similarly-sized and oriented copies of the same object, you might look at normxcorr() or something.
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DGM
el 25 de Abr. de 2022
This gives the ratio of the intersection area to the area of BW3
nnz(intAB3)/nnz(BW3)
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Image Analyst
el 24 de Abr. de 2022
If you just want to know if ANY part of it is within the other blob, then you can make up your marker image and main image, and call imreconstruct(). You have years of image processing experience now so you should be able to figure it out.
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