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Posted By: Sriram Member Level: Diamond Posted Date: 13 Jun 2008
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2006 Andhra Pradesh State Jawaharlal Nehru Technological University B.Tech COMPUTER GRAPHICS Set No. 4 Question paper
Code No: RR411504 Set No. 4
IV B.Tech I Semester Regular Examinations, November 2006
COMPUTER GRAPHICS
(Computer Science & Systems Engineering)
Time: 3 hours Max Marks: 80
Answer any FIVE Questions
All Questions carry equal marks
? ? ? ? ?
1. (a) What are the merits and demerits of raster-scan CRT.
(b) Consider a raster system with resolution of 640×480. How many pixels could
be accessed per second by a display controller that refreshes the screen at a
rate of 60 frames per second. What is the access time per pixel? [8+8]
2. (a) Distinguish the merits and demerits of scan line algorithm and flood fill algo-
rithm.
(b) Discuss about the super sampling approach followed for antialiasing.
[10+6]
3. (a) Show that the shearing factors applied in x and y directions are independent.
That is Sha,1
Sh1,b = Sha.b.
(b) Briefly discuss about co-ordinate transformations. [8+8]
4. (a) Find the general form of the transformation N which maps a rectangular
window with x extent xwmin to xwmax in the x-direction and y extent ywmin
to ymax in the y-direction on to a rectangular view port with x extent xvmax
to xvmax and y extent yvmin to yvmax.
(b) Distinguish between Cohen-Sutherland outcode and Sutherland-Hodgeman al-
gorithm. [8+8]
5. Distinguish the transformations performed in 2-D graphics and 3-D graphics. Ex-
plain how many matrices are needed to define each of the basic transformations.
[8+8]
6. (a) Explain the steps involved in transformation from a world coordinate descrip-
tion of a 3-D object to device coordinates.
(b) Explain the procedure followed for back face detection. [8+8]
7. Explain the steps involved in Bezier’s method for curve generation. [16]
8. Discuss about the techniques to achieve the simple animation effects. [16]
? ? ? ? ?
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