Deleting objects from a binary image.

Hello everyone. I have a binary image with different objects. In the image I want to remove 5th, 13th, and 20th objects. How can I remove it. Thnks.

Answer 1

[Matthew Eicholtz]

L = bwlabel(bw); %where bw is your binary image
bw2 = bw; %copy of binary image
bw2(L==5) = 0; %deletes the 5th object

[Shikhar Ghimire]

It doesn't work on mine

[Image Analyst]

Try my answer below. If that doesn't work, explain more in a new question, and attach your image. And say which blob you want to delete.

Answer 2

[Image Analyst]

You can use ismember() to extract the ones you want.

newBinaryImage = ismember(labeledImage, listOfBlobsToKeep) > 0;