# Maharashi Dayanand University (MDU) 2007 B.E Information Technology COMPUTER GRAPHICS - Question Paper

Sunday, 07 April 2013 07:25Web

COMPUTER GRAPHICS

CSE-303-E

QUESTIONS

1.

**(**Draw the block diagram and discuss the working of a raster display system ? Differentiate ranging from horizontal retrace and vertical retrace.

**a)****(**Write the steps needed to plot a line whose slope is ranging from 0 and 45 degree using Bresenham's method.

**b)**2 Brifly discuss the subsequent display techniques:

(!) CRT (!!) LCD (!!!) Plasma

also compare their features.

3

**(**Derive the transformation that rotates an object point 0 about the origin. Write the matrix representation for this.

**a)****(**Write and discuss briefly the Sutherland Hodgeman polygon clipping algorithm.

**b)**4

**(**Show what happens when an object"behind" the center of projection is projected by Mperspective and then clipped why in general 1 can't project and then clip.

**a)****(**What do you mean by Co-ordinate system and logical co-ordinate system.

**b)**5 Why we require hidden surface removal algorithms? Write and discuss the scan-line method for hidden surface removal? How the amount of calculation can be decreased in this method?

6

**(**Where has the term "Spline " originated from? DIfferentiate b/w uniform non rational B-spline and non uniform non rational B-spline with suittable examples?

**a)****(**Briefly discuss any method for displaying bicubic surfaces.

**b)**7 Differentiate b/w diffuse and specular reflection? Also discuss Phong illumination model.

8 What is an image ? How quality of an image can be improved with filtering?

9 Write and discuss the flood fill algorithm?

Earning: Approval pending. |