R.G.P.V. Bhopal (MP)
I.T.(6th Semester) EXAM,Dec-2010
COMPUTER GRAPHICS & MULTIMEDIA [IT-602]
Time: 3Hrs Max Marks: 100 Min Marks: 35
Note:Attempt 1 question from each unit.All question Carry equal marks.
Note:Attempt 1 question from each unit.All question Carry equal marks.
UNIT-I
Q.1.(a) Explain with neat diagram working of refresh CRT.?(b) Write DDA algorithm for line drawing and calculate pixels that will be used to draw line
between (2,3) and (4,4).?
OR
Q.2.(a) Explain with near diagram working of plasma panel as a display device.?(b) Explain with an example the working of Bresenham's mid point circle drawing algorithm.
Choose a circle and calculate pixels in the path of this circle in only first quadrant.?
UNIT-II
Q.3.(a) Explain basic principle used in scan line ploygon fill algorithm.?(b) A traingle with vertices(0,0),(0,3) and (3,0) is rotated in anticlockwise direction to an
angle of 30 degrees about its centroid. Calculate new co-ordinates of vertices.?
OR
Q.4.(a) Define resolution of a CRT display. What is aliasing ? Explain any two techniques to remove this problem.?(b) A square with vertices(0,0),(2,0) and (0,2) is sealed to 2 units in x as well as y direction
about the fixed point which is centre of square. Find co-ordinates of vertices of new square.?
UNIT-IIII
Q.5.(a) A window with vertices(3,0),(5,0),(5,4),(3,4) is to be mapped on to a view port with vertices (0.5,0.5),(1.0,0.5),(1.0,1.0),(0.5,1.0). Derive necessary viewing transformation.?(b) What is clipping ? Describe Cohen-Sutherland bit code method of testing visible lines.?
OR
Q.6.(a) Describe Sutherland-Cohen subdivision line clipping algorithm.?(b) Define the terms light sources, ambient light and diffuse reflections. Give salient features
of phong specular reflection model.?
UNIT-IV
Q.7.(a) Define the terms polygon surfaces, polygon data tables and quadric surfaces and explain each with examples.?(b) Define perspective projection & derive transformation matrix for perspective projection.?
OR
Q.8.(a) Define control points and blending functions for Bezier curves. Derive cubic Bezier curves (blending functions) for four control points and discuss the properties of each blendingfunction.?
(b) Given a parallelopiped with vertices A(0,0,0), B(1,0,0), C(1,2,0), D(0,2,0),E(0,2,2) F(0,0,3), G(1,0,3) and (1,2,3) Calculate transformed vertices under perspective projection when object is observed from point(0,0,10).?
UNIT-V
Q.9.(a) If 15 minutes of stereo music is stored in MIDI format as well as WAV format, with 16 bitresolution @ 44.1 kHz then what would be storage requirement of two files.?
(b) What are components of a multimedia system ? Describe typical formats in which the data of different components are stored in a computer. How are these linked with each other ?
OR
Q.10. Write shor notes on any three of the following :(i) Elements of hypertext
(ii) Multimedia tools
(iii) Multimedia file formats(any three)
(iv) Multiedia hardware
(v) Authoring tools
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