Question

If point are expressed in  homogeneous coordinates then the pair of (x, y) is represented as

(a) (x’, y’, z’)

(b) (x, y, z)

(c) (x’, y’, w)

(d) (x’, y’, w)

I had been asked this question during a job interview.

My enquiry is from Matrix Representations and Homogeneous Coordinates in chapter 2D Transformation and Viewing of Computer Graphics

Answer 1

The correct option is (d) (x’, y’, w)

Explanation: If point are expressed in homogeneous coordinates then we add 3rd coordinate to the point (x, y), that is represented as (x’, y’, w).