Question

What is the use of Coherence techniques along and between scan lines?

(a) To simplify the calculations

(b) To determine the area edges

(c) To find polygon region

(d) To correct interior area

The question was asked in examination.

I'd like to ask this question from Anti Aliasing in division Animations and Realism of Computer Graphics

Answer 1

The correct choice is (a) To simplify the calculations

The best I can explain: Coherence techniques are used along and between scan lines to simplify the calculations.