How to fill holes having area less than some maximum threshold value?

I have a binary image, I want to fill only those holes having area less than say 20, and holes having area more than that remains unfilled...how can I do this...any sort of help is appreciated

Answer 1

[Image Analyst]

Invert the image so that the holes are now foreground blobs, then call bwareaopen, and invert again

binaryImage = ~bwareaopen(~binaryImage, 20);

[peyush]

thanks