Computer Graphic (CG) Semester 4 (Revised Course) (3 Hours) May 2012

Computer Graphic (CG) Semester 4 (Revised Course) (3 Hours) May 2012
GN-7937 [Total Marks : 100]
N.B:	(1)	Questions no 1 is compulsory.
	(2)	Attempt any four out of remaining questions.
	(3)	Assume suitable data if necessary.
	(4)	Figures to the right indicate full marks.
	(5)	illustrate answers with diagrams wherever required.
1.	(a)	What are the applications of Computer Graphics.	05
	(b)	Explain frame by frame Animation.	05
	(c)	Explain Ray Tracing.	05
	(d)	Explain Ant aliasing techniques.	05
2.	(a)	Write Bresenham's line drawing algorithm. Also write mathematical derivations for the same.	10
	(b)	Explain 4-connected and 8-connected methods. Also explain flood fill and boundary fill algorithms.	10
3.	(a)	What is segment? Explain segment table and any four operations which can be performed on segments.	10
	(b)		10
4.	(a)	Explain Sutherland-Hodgeman polygon clipping algorithm. How Welier - Athorton algorithm solves the problem of concave polygon clipping?	12
	(b)	Describe HSV and RGB color model.	08
5.	(a)	Explain the rotation of an object about an arbitrary point. Derive composite matrix for the same.	10
	(b)	Describe 3D clipping of an object.	10
6.	(a)	explain painter's Algorithm.	10
	(b)	Explain the bezier curve and write the properties of bezier curve.	10
7.	(a)	ExpSalain and compare Phong Shading and Gauard Shading.	10
	(b)	Describe diffuse illumination and point-source illumination.	10