Computer Graphics and Visualization - Jun 2015

Computer Science Engg. (Semester 6)

TOTAL MARKS: 100
TOTAL TIME: 3 HOURS (1) Question 1 is compulsory.
(2) Attempt any four from the remaining questions.
(3) Assume data wherever required.
(4) Figures to the right indicate full marks. 1 (a) Explain the application of computer graphics.(6 marks) 1 (b) With a neat diagram, explain the graphics pipeline architecture.(6 marks) 1 (c) Explain the concept of pinhole camera of an imaging system. Also derive the expression for angle of view.(8 marks) 2 (a) With the help of diagram, describe the open GL interface.(4 marks) 2 (b) Write a note on RGB colour model and indexed colour model.(6 marks) 2 (c) Explain a 2D- Sierpinski gasket program in detail with comments.(10 marks) 3 (a) Explain the different classes of logical input devices.(6 marks) 3 (b) Explain picking in detail.(8 marks) 3 (c) Explain the mouse callback function for mouse interface.(6 marks) 4 (a) Define a plane in office space and derive the equation of a plane in office space.(10 marks) 4 (b) Explain the modelling of coloured cube in detail.(10 marks) 5 (a) Define and represent the following 2D transformation in homogeneous Co-ordinate system.
i) Translation
ii) Scaling
iii) Rotation.(10 marks) 5 (b) Explain the rotation of an object about an arbitrary point (i.e other than origin) and also derive the concatenation matrix.(10 marks) 6 (a) Derive the perspective normalization matrix for viewing:(12 marks) 6 (b) Discuss the following openGL functions
i) gluLookAT;
ii) gluePerspective.(8 marks) 7 (a) Explain the Phong lighting model.(10 marks) 7 (b) Explain the polygon shading in detail.(10 marks) 8 (a) Explain Liang Barsky line clipping algorithm.(10 marks) 8 (b) Explain and derive the equations for Bresenham's line drawing.(10 marks)