how can i remove objects that are on the edge of another object?

I want to remove objects from 1 image that are on the border of objects in another image. How can I do this?

[Constantino Carlos Reyes-Aldasoro]

If your objects are already labelled (i.e. each object has a different value) you can use regionprops:

https://uk.mathworks.com/help/images/ref/regionprops.html

and then find "Extrema" in the properties, this will return the coordinates of the extreme of each object and then you can find if any of these values is in the border of your image.

Hope this answers your question, If not let me know.

[AAS]

Hi! this is a great idea but I am finding it hard to implement. I will add some figures now so it may help with understanding my question .

In the figure above, I want to remove the blue outlined object as shown in third image. So basically black blobs that are outside and on the borders of the first image

Thank you very much!

[Catalytic]

It would be a good idea if you would attach one single .mat file containing the 3 images, so the community can experiment with them and demonstrate solutions for you.

Answer 1

[Matt J]

You can use imopen().