13. What is the use of hidden line removing algorithm?
The hidden line removal algorithm determines the lines, edges, surfaces or volumes that are visible or invisible to an observer located at a specific point in space.
14. What is computer graphics realism?
The creation of realistic picture in computer graphics is known as realism. It is important in fields such as simulation, design, entertainments, advertising, research, education, command, and control.
15. How realistic pictures are created in computer graphics?
To create a realistic picture, it must be process the scene or picture through viewing-coordinate transformations and projection that transform three-dimensional viewing coordinates onto two-dimensional device coordinates.
16. What is Fractals?
A Fractal is an object whose shape is irregular at all scales.
17. What is a Fractal Dimension?
Fractal has infinite detail and fractal dimension. A fractal imbedded in n-dimensional space could have any fractional dimension between 0 and n. The Fractal Dimension D= LogN / Log S Where N is the No of Pieces and S is the Scaling Factor.
18. What is random fractal?
The patterns in the random fractals are no longer perfect and the random defects at all scale.
19. What is geometric fractal?
A geometric fractal is a fractal that repeats self-similar patterns over all scales.
20. What is Koch curve?
The Koch curve can be drawn by dividing line into 4 equal segments with scaling factor 1/3. and middle 2 segments are so adjusted that they form adjustment sides of an equilateral triangle.
21. What is turtle graphics program?
The turtle program is a Robert that can move in 2 dimensions and it has a pencil for drawing. The turtle is defined by the following parameters. g. Position of the turtle (x, y) h. Heading of the turtle 0 the angle from the x axis.
22. What is graftals?
Graftals are applicable to represent realistic rendering plants and trees. A tree is represented by a String of symbols 0, 1, [, ]
23. What is a Particle system?
A particle system is a method for modeling natural objects, or other irregularly shaped objects, that exhibit “fluid-like” properties. Particle systems are suitable for realistic rendering of fuzzy objects, smoke, sea and grass.
24. Give some examples for computer graphics standards?
i. CORE – The Core graphics standard
j. GKS -- The Graphics Kernel system
k. PHIGS – The Programmers Hierarchical Interactive Graphics System.
l. GSX – The Graphics system extension
m. NAPLPS – The North American presentation level protocol syntax.
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