1 | Page 5105: BHARATHIDASAN ENGINEERING COLLEGE (Approved by A.I.C.T.E. New Delhi and affiliated to Anna University, Chennai) NATTRAMPALLI – 635 854 . DEPARTMENT OF COMPUTER SCIENCE & ENGINEERING CS6504 – COMPUTER GRAPHICS YEAR / SEM: III / V Frequently Asked Questions UNIT I INTRODUCTION Survey of computer graphics, Overview of graphics systems – Video display devices, Raster scan systems, Random scan systems, Graphics monitors and Workstations, Input devices, Hard copy Devices, Graphics Software; Output primitives – points and lines, line drawing algorithms, loading the frame buffer, line function; circle and ellipse generating algorithms; Pixel addressing and object geometry, filled area primitives. PART – A 1. Define Computer graphics. 2. List the video display devices. 3. What are the major application areas of Graphics? [ Nov. / Dec. 2016 ] 4. Define refresh / frame buffer. [ May / June 2016 ] 5. Find the refresh rate of a 512 x 512 frame buffer, if the access time for each pixel is 200 nanoseconds. [ Nov./ Dec. 10] 6. Find the amount of memory required by an 8 plane frame buffer each of red, green, blue having resolution of 1024 x 768. [ Nov./ Dec. 12] 7. Explain scan code. 8. Summarize the merits and demerits of Penetration techniques. 9. What are the merits and demerits of Direct View Storage Tubes (DVST)? [ May / June 2016 ] 10. Compare emissive and non-emissive displays. 11. Compare the merits and demerits of Plasma panel display. 12. Differentiate raster scan and Random scan systems. [ Nov. / Dec. 13 ] 13. Define the term resolution. [ April / May 2017 ] 14. Name some Input devices and Hard copy devices. 15. Name a few graphics software standards. [ April / May 11] 16. Define aspect ratio. [ May / June 13 ] 17. Define: pixel, bitmap and pixmap. 18. What is an output primitives?
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5105: BHARATHIDASAN ENGINEERING COLLEGE (Approved by A.I.C.T.E. New Delhi and affiliated to Anna University, Chennai)
N A T T R A M P A L L I – 6 3 5 8 5 4 .
DEPARTMENT OF COMPUTER SCIENCE & ENGINEERING
CS6504 – COMPUTER GRAPHICS
YEAR / SEM: III / V
Frequently Asked Questions
UNIT I INTRODUCTION
Survey of computer graphics, Overview of graphics systems – Video display devices, Raster scan systems,
Random scan systems, Graphics monitors and Workstations, Input devices, Hard copy Devices, Graphics
Software; Output primitives – points and lines, line drawing algorithms, loading the frame buffer, line
function; circle and ellipse generating algorithms; Pixel addressing and object geometry, filled area
primitives.
PART – A
1. Define Computer graphics.
2. List the video display devices.
3. What are the major application areas of Graphics? [ Nov. / Dec. 2016 ]
4. Define refresh / frame buffer. [ May / June 2016 ]
5. Find the refresh rate of a 512 x 512 frame buffer, if the access time for each pixel is 200 nanoseconds.
[ Nov./ Dec. 10]
6. Find the amount of memory required by an 8 plane frame buffer each of red, green, blue having
resolution of 1024 x 768. [ Nov./ Dec. 12]
7. Explain scan code.
8. Summarize the merits and demerits of Penetration techniques.
9. What are the merits and demerits of Direct View Storage Tubes (DVST)? [ May / June 2016 ]
10. Compare emissive and non-emissive displays.
11. Compare the merits and demerits of Plasma panel display.
12. Differentiate raster scan and Random scan systems. [ Nov. / Dec. 13 ]
13. Define the term resolution. [ April / May 2017 ]
14. Name some Input devices and Hard copy devices.
15. Name a few graphics software standards. [ April / May 11]
16. Define aspect ratio. [ May / June 13 ]
17. Define: pixel, bitmap and pixmap.
18. What is an output primitives?
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19. List out few attributes of Output Primitive. [ MAY / JUNE 14 ]
20. Write down any two line attributes. [ Nov. / Dec. 2011 ] [ Nov. / Dec. 14 ]
21. Define is DDA? What are the disadvantages of DDA algorithm?
22. List the advantages of Bresenham’s algorithm over DDA algorithm. [ 4 Marks] [ Nov. / Dec. 2016 ]
23. Brief on the governing equation of a circle. [ Nov. / Dec. 2016 ]
24. Give the contents of a display file.
25. What is loading a frame buffer?
26. What is meant by antialiasing? [ Nov. / Dec. 13 ]
27. Generalize on filled area primitive. [ May / June 12 ]
28. What do you infer from PHIGS?
29. What is pixel addressing and object addressing?
30. How to compute the address of a location in frame buffer? [April / May 2017]
31. Compute the resolution of a 2 x 2 inch image that has 515 x 512 pixels. [ Nov. / Dec. 2015 ]
32. Give the contents of the display file. [ Nov. / Dec. 2015 ]
33. Define aspect ratio. [ Nov. / Dec. 2012 ]
34. Write down the simple procedure to draw a line between two points.
35. List out the methods used for smoothly joining two line segments?
36. Digitize a line from (10,12) to (15,15) on a raster screen using Bresenhams straight line algorithm.
[ Nov. / Dec. 13]
37. What is the major difference between symmetrical DDA and simple DDA? [ May / June 12]
38. Identify the contrast between Raster and Vector Graphics. [ April / May 15]
PART – B
1. Explain the following Video Displays Devices [ May / June 2016 ]
(a) Refresh cathode ray tube (b) Raster Scan Displays
(c) Random Scan Displays (d) Color CRT Monitors
2. Explain on the following:
i) Direct View Storage Tubes ii) Flat Panel Displays iii) Liquid Crystal Displays. [April / May 2017]
3. i) Define and differentiate random scan and raster scan devices. [ Nov. / Dec. 2015 ]
ii) Explain the Various Input and Output Devices.
4. i) Explain the working principle of CRT with a neat diagram. [ Nov. / Dec. 2016 ]
ii) Differentiate raster scan and random scan display systems. [ Nov. / Dec. 2016 ]
5. Point out various attributes of points and line.
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6. i) Illustrate the line drawing algorithm using DDA. Digitize a line from (12,14) to (18,22) on a raster
screen using DDA straight line. [ May / June 2016 ]
ii) Write and explain Bresenham’s line drawing algorithm and trace the algorithm for the given point
(2, 1) to (10, 12). [ Nov. / Dec. 2016 ]
iii) How are event driven input devices handled by the hardware? Explain. [ Nov. / Dec. 2015 ]
7. i) Evaluate and explain the midpoint circle drawing algorithm with an example. [ April / May 2017 ]
ii) Assume 10 cm as the radius and co-ordinate as the centre of the circle Draw the circle and deduce the
answer. [ Nov. / Dec. 2011 ]
iii) Using Bresenhams circle drawing algorithm plot one quadrant of a circle of radius 7 pixels with origin
as centre. [ Nov. / Dec. 2015 ]
8. i) Develop and Calculate the pixel location approximating the first octant of a circle having centre at
(4,5) and radius 4 units using Bresenham’s algorithm. [ Nov. / Dec. 2013 ]