What is the application difference between extent and solidity in image processing?

1. What is solidity in image processing?
2. What is extent of an image?
3. What is convex hull in image processing?

What is solidity in image processing?

Solidity is the ratio of pixels in the objects to pixels of the convex hull image. It gives a measure of the compactness of the object.

What is extent of an image?

Extent is the easier of the two concepts: imagine the smallest rectangle that fits around your object. The extent is the area of your object divided by the area of this rectangle.

What is convex hull in image processing?

Convex Hull. • A region A is convex if a straight line joining any two points in A falls within A. • A convex hull, H, of a set S is the smallest convex set containing S.