Dr. A.P.J. Abdul Kalam University MTECH I SEM (CTA) Computer Graphics and Multimedia (MTCTA 105) Dec 2020 Question Paper

Dr. A.P.J. Abdul Kalam University

Master of Technology

First Semester Main Examination, Dec-2020

Computer Graphics and Multimedia (MTCTA 105)

Time: 3:00 Hrs Max Marks 70

Note : Attempt any five questions out of eight.

All questions carry equal marks.

Q.1 (a) What are the types of computer graphics? What are the categories of

computer graphics? What are the applications of computer graphics?

(b) What do you mean by display processing unit?

Q.2 (a) What do you mean by scan conversion?

(b) What is the difference between a diffuse reflecting surface and a

specular reflector?

Q.3 (a) What are the steps involved in general fixed point scaling? Hence

scale a triangle A (0, 0) B (5, 0) and C (5, 5) to half its size.

(b) What is clipping? Why clipping is required in computer graphics?

Q.4 (a) Find the transformed coordinates of the triangle with vertices

A (10, 10) B (25, 35) and C (40, 10) under the rotation in anticlockwise

direction about the point (25, 10) by an angle 450

.

(b) Distinguish between parallel and perspective projection.

Q.5 (a) What do you mean by translation, scaling and rotation?

(b) What is hidden surface removal?

Q.6 (a) For what gourad shading is used? Why is it different with phong

shading?

(b) What are the properties of Bezier Curve?

Q.7 (a) Explain XYZ color model and the CIE chromaticity diagram.

(b) What are the components of multimedia system?

Q.8 (a) Develop Bresenham’s algorithm and indicate raster positions would

be scanned by Bresenham’s algorithm when scan converting a line from

screen coordinate (1, 1) and (8, 5).

(b) Why the Sutherland Hodgman polygon clipping algorithm works for

only convex clipping region?

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