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Posted Date: 10 May 2008 Posted By: yamini Member Level: Silver
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2007 Jawaharlal Nehru Technological University B.Tech Information Technology II II Computer Graphics Aug/sep 2007 set IV Question paper
Code No: R05221201 Set No. 4
II B.Tech II Semester Supplimentary Examinations, Aug/Sep 2007
COMPUTER GRAPHICS
( Common to Information Technology and Computer Science & Systems
Engineering)
Time: 3 hours Max Marks: 80
Answer any FIVE Questions
All Questions carry equal marks
? ? ? ? ?
1. (a) Consider the raster system with resolution of 1280 by 1024. What size frame
bu er (in bytes) is needed for the systems to store if 24 bits pixel are to be
stored.
(b) How long would it take to load a 640 × 480 frame bu er with 12 bits per
pixel, if 105 bits can be transferred per second. [8+8]
2. (a) What are the steps involved in Bresenham’s line drawing algorithm for |m| > 1,
where m is slope of the line.
(b) Generate all raster points on the line segments, if the two end-points are given
as (10,20) and (18,30) using the above algorithm. [8+8]
3. (a) Show that the composition of two rotations is additive by concatenating the
matrix representations for R(?1) R(?2) = R(?1 + ?2).
(b) Give a brief note about the following transformations. [8+8]
i. Reflection
ii. Shear.
4. (a) Give a brief note about two dimensional viewing functions. Give an example
which uses two dimensional viewing functions.
(b) Explain the Cohen-Sutherland line clipping algorithm. [8+8]
5. (a) Distinguish between boundary representation and space-partitioning represen-
tation of solid object representation schemes.
(b) List and describe the polygon tables representation for polygon surfaces of a
3-D object. Give an example. [8+8]
6. (a) Classify the projections. Explain the properties of each.
(b) Distinguish the parallel projection and Perspective Projection view volumes.
Give suitable examples. [8+8]
7. Write an algorithm for generating a quad tree representation for the visible surfaces
of an object by applying the area subdivision tests to determine the values of the
quad tree elements. [16]
8. What are the steps in design of animation sequence? Describe about each step
briefly. [16]
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