How to increase the area of black color object in matlab

We are trying to detect black color object through overhead camera and then we are taking black color object as a obstacle so we want to increase the region of the black color object ?

[Amos]

Mukul, your question is not clear to me. What do you mean by black color object? What is that "region of a color object" that you want to increase? Please give us more information about what you want to do and what your actual question is - otherwise it is impossible to answer it.

Answer 1

[Image Analyst]

You can increase the size of the black object by calling imerode() which is like a moving local minimum operator. Insert your image if you want more advice.