Biju Patnaik University of Technology 2008-7th Sem B.Tech (B Tech),ester computer graphics and multimedia - Question Paper
B tech (BPUT) seventh semester ques. paper of computer graphics and multimedia. IWL
Seventh Semester Examination - 2008 COMPUTER GRAPHICS AND MULTIMEDIA Full Marks - 70
Time-3 Hours
Answer Question No 7 which is compuisory and any five from ifte rest.
77?e figures in the right-hand margin indicate marks.
1. Answer all questions: 2*10
(a) What is the storage requirement for a 1024 x 1280 *24 resolution picture for a 30 second animated film sequence at video rates of 30 frames per seconds 7
{b) Explain briefly t'he characteristics of phosphor.
(c) What are the main limitations of line drawing algorithm 9
(d) What are the tests to ascertain a polygon P obscures Q ?
(e) What are the advantages and disadvantages of command line and graphical user interface ?
(f) What is the difference between halftoning and dithering ?
(g) Give at least one example for each of the following:
line drawing and raster display devices.
(h) What is the difference between a bitmap and a pixel map ?
(i) Explain the difference between Gouraud and Phong shading
(j) Write the set of equations for rotational transformations.
2. (a) Illustrate the BresenhanVs line generation algorithm, 5
BCSE 3401/PE BM 8411 2 Contd,
(b) Explain how antialising can be incorpo' rated in above algorithm 5
3. (a) What parameters are to be considered in
designing graphic function that align text? Develop the functions and show how they can be used 5
(b) Explain how device independence can be achieved by using display file. 5
4, Illustrate the difference between the midi-point subdivision and Cohen Sutherland line-clipping algorithm with the help of an example, 10
IWL
5 (a) Distinguish between parallel and perspective projections Develop transformation matrix for standard parallel projection. 5
(b) How is the Z buffer used to make closer objects display sn front of farther ones ?
5
6. (a) Write some of the important properties of
i
Bezier curve. J
(b) Draw the Bezier curve using a set of control points (0,1), (2,5), (5,5) and (8,0).
3
(c) Tesi the local and globa! control property over this curve. 4
7. (a) Explain back face removal algorithm for
hidden surface elimination. 5
(b) Discuss fhe advantages and disadvantages of using command line and graphical user interface. Give example of operating systems that support above user interfaces. 5
8. (a) What do you understand by the multime
dia conferences ? Justify that increase in data rate for multimedia conference is important 5
(b) Explain the difference between JPEG and MPEG standard with examples. 5
IWfL
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