Download GTU BE/B.Tech 2019 Winter 6th Sem Old 160703 Computer Graphics Question Paper

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GUJARAT TECHNOLOGICAL UNIVERSITY
BE - SEMESTER- VI (Old) EXAMINATION - WINTER 2019

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Subject Code: 160703 Date: 04/12/2019
Subject Name: Computer Graphics
Time: 02:30 PM TO 05:00 PM Total Marks: 70

Instructions:

1. Attempt all questions.

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2. Make suitable assumptions wherever necessary.
3. Figures to the right indicate full marks.

Q.1 (a) Discuss any five computer graphics applications. 07
(b) Explain working of CRT in detail with diagram 07

Q.2 (a) Why touch panels are used? Explain working of optical touch panel, electrical touch panel and acoustical touch panel 07

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(b) Explain refresh operation of video controller in raster-scan systems. 07

OR

(b) Find intermediate points of line from (6,6) to (14,10) using DDA line drawing algorithm. Which are limitations of DDA line drawing algorithm? 07

Q.3 (a) What do you mean by inside-outside test? Explain Odd parity rule and Non-zero winding number rule in detail. 07
(b) Write and explain mid point circle drawing algorithm. 07

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OR

Q.3 (a) Explain any two methods of character generation. 07
(b) Apply following transformation to a triangle with coordinates A(2,5) , B(7,10) and C(10,2) 07
(i) Translate original by 3 units in X direction and 4 units in y direction.
(ii) Scale original triangle by 1.5 unit in x-direction and 2 unit in y direction.

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(iii) Rotate the original triangle by 45° about origin in clock wise direction

Q.4 (a) Why window to view port transformation is required? Explain this transformation in detail. 07
(b) Explain Liang Barsky Line Clipping Algorithm with example 07

OR

Q.4 (a) Explain Bezier curves and surfaces. 07

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(b) Explain 3D parallel projections 07

Q.5 (a) Explain RGB and YIQ color models 07
(b) What is polygon clipping? Explain Sutherland Hodgeman Polygon clipping with example. 07

OR

Q.5 (a) Explain following illumination models: ambient light and diffuse refection 07

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(b) What do you mean by composite transformation? Explain 3D Reflection and Shears transformation in detail. 07

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