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# BCA 2nd - COMPUTER GRAPHICS previous year question 2012

## BCA 2nd YEAR COMPUTER GRAPHICS Last & Previous Year Question

#### COMPUTER GRAPHICS Question Paper2012

Part-A 10 x 1 = 10

1. What are the two principle applications of image processing? Give name.
2. What is difference between image processing and computer graphics? (any two difference)
3. How many k bytes does a frame buffer need in a 600 x 400 pixel?
4. What is clipping?
5. What are inverse transformation?
6. Why do all use Homogeneous coordinates?
7. What are the no. of bits per inch (bpi) in dot matrix printer?
8. What is the condition of point clipping?
9. What is the function of laser printer?
10. What is resolution?

Part-B 5 x 2 = 10

11 What is the difference between impact and non-impact printers ?
12. What is the features of Inkjet printers?
13. Compute the size of a 640 x 480 image at 240 pixels per inch and also explain the aspect ratio.
14. What is the advantages of electrostatic plotters? Explain its functions.
15. Consider three different raster system with resolutions of 640 x 480, 1280 1024 and 2560 x 2048.
(i) What size is frame buffer (in bytes) for each of these systems to store 12 bits per pixel?
(ii) How much storage (in bytes) is required for each system if 24 bits per pixel are to be stored?

Part-C 10 x 3 = 30

16. Discuss and explain Bresenham's algorithm for line generation. How DDA differs from Bresenham's line drawing algorithm?
OR
Describe the role of animation in entertainment and scientific visualization. And how is Digital image processing different from computer graphic methods?
17. Given ellipse radii rx = 8 and rY = 6 illustrate the steps for mid point ellipse algorithm in 1 quadrant.
OR
What are the disadvantages of scan conversion process ? And explain how the effects can be minimized.
18. Explain process of displaying objects in vector display and raster display. Draw block diagrams of the architectures of both the display system.
OR
Write short note on :
(1) Digitizer
(2) Antialising technique for visual realism
(3) Image scanner
(4) Inkjet printers

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