Cochin University of Science and Techology (CUST) 2007-1st Sem B.Tech Computer Science and Engineering Vester , ,CS 603 COMPUTER GRAPHICS - Question Paper

B.Tech Degree V1 Semester Examination, May 2007
CS 603 COMPUTER GRAPHICS
Time : three hours Maximum Marks : 100
1. a) Differentiate ranging from Raster scan and random scan systems (5)
b) Explain any 1 polygon filling algorithm. (15)
OR
2. a) Explain the working of any 3 graphical input devices. (10)
b) Explain Bresenham’s line drawing algorithm (10)

3. a) Explain basic transformations. Also provide their homogeneous matrix
representations (10)
b) Explain window to view port transformations (10)
OR
4. a) Explain Sutherland-Hodgeman polygon clipping algorithm (10)
b) Give the matrix representation of reflection about the line
y=x and y=-x (10)

5. a) Explain Bezier curves (10)
b) Differentiate ranging from Octrees and BSP trees (10)
OR
6. a) Explain how a 3D object is presented on the screen using
Perspective projection (10)
b) Explain the use of fractal geometry in graphics (10)

7. a) Explain the scan line method for visible surface detection. (10)
b) Explain Area subdivision method for visible surface detection (10)
OR
8. a) Explain depth buffer method for visible surface detection (10)
b) Write notes on :
a) Ray casting b) Back face detection (10)

9. a) Explain the different steps in creating animation (10)

b) discuss phong shading and goraud shading (10)
OR
10. Write notes on :
a) Morphing b) RGB color model
c) Ray tracing d) VRML (20)

Earning:   Approval pending.