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Reg No.: Name:
APJ ABDUL KALAM TECHNOLOGICAL UNIVERSITY
B.Tech S7 (S) Examination Sept 2020

Course Code: CS401
Course Name: COMPUTER GRAPHICS

Max. Marks: 100 Duration: 3 Hours
PARTA

Answer all questions, each carries 4 marks. Marks
1 Describe simple random scan display system and draw its architecture. (4)
2 Describe Flat Panel Display and explain its different categories. (4)
3 Which are the steps involved in window to viewport coordinate transformation (4)

in 2D?

4 Magnify the triangle ABC with A(O, 0), 0(1, 1) and C(5, 2) to twice its size (4)

while keeping C(5, 2) fixed.

5 Show that the composition of two successive rotations are additive 1.൦. R(O1). (4)
(92) = R(Ol+ 62).

6 Derive the linear equation for a 3D object and test whether the coordinates are (4)
inside or outside the plane.

7 Define the terms (i) Centre of projection (ii) Principal vanishing point (4)

8 Differentiate between the object space and image space method for the hidden (4)

surface removal of an image.

9 Describe the basic concepts of sampling and quantization with a neat sketch. (4)
10 Write any six differences between perspective projection and parallel projection (4)
PART छ

Answer any two full questions, each carries 9 marks.
11 a) Generate the points between the end points of a line viz.(2,2) and (9,6) by using (5)

Bresenham’s line drawing algorithm.
b) Scan convert the line segment with end points (30,20) and (15,10) using DDA (4)

line drawing algorithm.

12 a) With a suitable figure, describe the shadow masking techniques in CRT. (5)
b) Write a note on any two interactive graphics input devices. (4)
13 a) Derive the Initial decision parameter of midpoint circle drawing algorithm. (6)

b) Describe the relevance and various methods of inside-outside test used in (3)

polygon filling.

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