Download GTU BE/B.Tech 2018 Winter 6th Sem Old 160703 Computer Graphics Question Paper

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GUJARAT TECHNOLOGICAL UNIVERSITY
BE - SEMESTER-VI (OLD) EXAMINATION - WINTER 2018

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Subject Code:160703 Date: 16/11/2018
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) List various techniques used for display graphics in computer. Explain CRT display with the help of diagram. [07]
(b) Explain DDA line drawing algorithm. What are the limitations of DDA line drawing algorithm? [07]

Q.2 (a) List and explain various 2D transformations. [07]

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(b) Explain the Bresenham’s algorithm to draw line for any kind of slope [07]
OR
(b) Explain working of Touch Panel and digitizer. [07]

Q.3 (a) Write and explain the midpoint circle generation algorithm. [07]
(b) Translate a Square ABCD with the coordinates A(0,0), B(5,0), C(5,5), D(0,5) by 2 units in X-direction and 3 units in Y-direction. [07]

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OR

Q.3 (a) Develop and implement a flood-fill algorithm to fill the interior of any specified area. What are the differences between flood-fill and boundary fill algorithm? [07]
(b) Apply the shearing transformation to Square with A(0,0), B(1,0), C(1,1) and D(0,1) as given below: [07]
a) Shear parameter value of 0.5 relative to line Yref = -1

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b) Shear parameter value of 0.5 relative to line Xref = -1

Q.4 (a) Explain the Cohen Sutherland line-clipping algorithm. [07]
(b) What is window and view-port? Retrieve equations for the scaling factors to map the window to view-port in 2D viewing system. [07]
OR

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Q.4 (a) Explain the Nicholl-Lee-Nicholl (NLN) line clipping algorithm [07]
(b) What is Bezier Curve? Define properties of Bezier Curve. [07]

Q.5 (a) What is depth buffer method? Write and explain the steps of a depth buffer algorithm. [07]
(b) Explain following color model: [07]
1) YIQ color model.

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2) XYZ Color model.
OR

Q.5 (a) Difference between parallel and perspective projection. [07]
(b) Explain following color model: [07]

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1) RGB color model.
2) CMY Color model.

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