Question

If an image contains K disjoint regions, what does the union of all the regions represent?

(a) Background

(b) Foreground

(c) Outer Border

(d) Inner Border

This question was addressed to me in an interview for internship.

I would like to ask this question from Relationships between Pixels in section Image Restoration and Reconstruction of Digital Image Processing

Answer 1

Correct option is (b) Foreground

To elaborate: The union of all regions is called Foreground and its complement is called the Background.