Page 20 - DCAP313_LAB_ON_COMPUTER_GRAPHICS

Lab on Computer Graphics

Notes Segments: A data segment is a portion of virtual address space of a program, which contains
the global variables and static variables that are initialized by the programmer.

Shaded Scenes: Shading refers to depicting depth perception in 3D models or illustrations by
varying levels of darkness.

Shadow Mask: A shadow mask is a metal plate punched with minute holes that separate the
coloured phosphors in the layer behind the front glass of the screen. Three electron guns at the
back of the screen sweep across the mask, with the beams only reaching the screen when they
pass over the holes.

Transformations: A function or operator that takes an image as its input and produces an image
as its output. Depending on the transform chosen, the input and output images may appear
entirely different and have different interpretations.

1.6 Review Questions

1. What is the pixel and also explain?
2. What is the concept of computer graphics?

3. What is the need of computer graphics?
4. Explain the application of computer graphics?

5. Explain the CRT graphics diagram.
6. Discus the input device and output primitives of computer graphics.
7. Discuss the evolution of computer graphics?
8. What are the properties of computer graphics?

9. Define the coordinate representation in graphics.
Answers for Self Assessment Questions

1. (b) 2. (c) 3. (d) 4. (a) 5. (a)
6. (a) 7. (b) 8. (c) 9. (a) 10. (c)
11. (a) 12. (d) 13. (a) 14. (b) 15. (a)

1.7 Further Readings

Fundamentals of computer graphics, by Steve Maschner

Computer Graphics Techniques, by David F. Rogers

http://books.google.co.in/books/about/Fundamentals_of_Computer_
Graphics.html?id=WY5Urwcqsa4C&redir_esc=y

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