Download JNTUA M.Tech 2nd Sem 2019 Feb 17D04205 Computer Graphics Question Paper

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Code: 17D04205

M.Tech II Semester Supplementary Examinations January/February 2019
COMPUTER GRAPHICS
(Common to CAD/CAM, PE&ED and PE)
(For students admitted in 2017 only)

Time: 3 hours Max. Marks: 60

Answer all the questions

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1 Explain the basic structure of a twisted nematic liquid crystal display with a neat sketch.
OR
2 Explain the concept of Bresenham?s circle drawing algorithm in detail.

3 (a) What is anti-aliasing? Explain different techniques used in anti-aliasing.
(b) Explain about Half toning in computer graphics with its applications.
OR
4 (a) Distinguish between Seed filling and Scanline filling algorithm. Apply any of these algorithms to
fill the polygon defined by: (1, 1), (1, 5), (5, 2).
(b) Write a procedure to implement a soft-fill algorithm.

5 Compare the number of arithmetic operations performed in NLN algorithm to both the Cohen-
Sutherland and the Liang-Barsky line-clipping algorithms for several different line orientations
relative to a clipping window.
OR
6 Explain about reentrant polygon clipping.

7 Prove that the multiplication of transformation matrices for each of the following sequence of
operations is commutative:
(a) Two successive rotations.
(b) Two successive translations.
(c) Two successive scaling.
OR
8 Explain about the importance of 2D and 3D transformation in any CAD systems.

9 Discuss Z-buffer algorithm with an example. What are the merits and limitations of this
algorithm?
OR
10 What is rendering? Comparison of Gouraud and Phong shading algorithms.

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