Rajasthan Technical University 2010 B.Tech Information Technology Computer graphics - Question Paper

7E4101
B-tech. - VII sem. (main/back) Examination, December-2010
info Technology
7IT2 Computer Graphics
Instruction to candidates:
Attempt overall 5 ques.. Internal option is indicated. All ques. carry equal marks. (Schematic diagrams must be shown wherever necessary. Any data you feel missing May suitably be presumed and said clearly. Units of volumes used/calculated must be said clearly.)
UNIT-1
Q.1. (a) What do you mean by high definition system? describe aspect ratio. What is the difference ranging from bitmap and pixmap? discuss the basic operation of a CRT. (8)
(b) Write short notes on:
1. Track ball and spaceball
2. Joystick
3. Digitizer
4. Scanner (8)
OR
Q.1. (a) What is the importance and utility of a display processor in a computer graphic system? (8)
(b) Why Random scan system cannot display realistic shaded scans? discuss the architecture of Random scan system. What is DVST? (8)
UNI T-2
Q.2. (a) discuss DDA line drawing algorithm. Why Bresenhem's algorithm is better than DDA line drawing algorithm. (8)
(b) Write short note on B-spline curves. (8)
OR
Q.2. (a) discuss the steps in midpoint circle drawing algorithm. (8)
(b) elaborate Bezier Cubic Curves? Drive their properties. (8)


UNIT-3
Q.3. (a) What is Homogeneous coordinate? explain the composite transformation matrices for 2 successive translation and scaling. (8)
(b) define the various kinds of parallel projections used in computer graphics. (8)
OR
Q.3. (a) Prove that 2 successive 2D rotations are additive:
R(?1).R(?2)=R(?1+?2) (8)
(b) What do you mean by Cavalier Projection and Cabinet Projection? (8)
UNIT -4
Q.4. (a) What is Ray tracing? How can render polygon surface using Gaurand shading? (8)
(b) discuss Z- Buffer algorithm. (8)
OR
Q.4. (a) discuss in brief about RGB, CMY and HSV color models. (8)
(b) Write a note on Phong shading. (8)
UNIT-5
Q.5. (a) discuss the comparison ranging from RTF and TIFF file formats. (8)
(b) define the different kinds of authoring tools. (8)
OR
Q.5. (a) What is MIDI? discuss the MIDI Communication Protocol. (8)
(b) Write a short note on MPEG.

Earning:   Approval pending.