Delete object that varies in size

Greetings community, I wanted to know if it is possible to eliminate an object that varies in size as a function of time. For example, it is a hand that for every second that passes leaves the image frame, that is, its size decreases. Thank you very much

Answer 1

[Image Analyst]

Yes. Use regionprops to measure the size of each blob and compare it with the size of that blob in prior frames.

[Walter Roberson]

You might also want to track Centroid of each objects, and estimate velocity of the objects to make it easier to figure out which object is which.