Jawaharlal Nehru Technological University Hyderabad 2006 B.E Computer Science computer graphics - Question Paper

Code No: RR320502 Set No. 1
III B.Tech II Semester Supplementary Examinations, Aug/Sep 2006
COMPUTER GRAPHICS
(Computer Science & Engineering)
Time: three hours Max Marks: 80
ans any 5 ques.
All ques. carry equal marks
? ? ? ? ?
1. (a) What is meant by gray level. If 10 bits of frame buffer memory is allocated
to every pixel, how many gray levels are possible per pixel.
(b) discuss how the frame buffer is logically organized to display color images on
video display unit. [8+8]
2. (a) Indicate which raster locations would be chosen by Bresenham’s algorithm
when scan-converting a line from screen coordinate (1,1) to screen co-ordinate
(8,5).
(b) discuss how the eight-way symmetry property of the circle is useful in the
generation of origin centered circle? [8+8]
3. (a) List the basic transformations which reason the physical distortion in the trans-
formed object.
(b) An object point P(x,y) is translated in the direction U = aI + bJ and simulta-
neously an observer moves in the direction U. Show that there is no apparent
motion of the object point from the point of view of obsever. [8+8]
4. obtain the viewing transformation that maps a window whose left corner is at (1,1)
and upper right corner is at (3,5) on to a view port that has lower corner at (0,0)
and upper right corner at

Earning:   Approval pending.