NALANDA OPEN UNIVERSITY QUESTION, 2012, M.C.A, Part-III, Paper-XXV, (Computer Graphics and Multimedia)

NALANDA OPEN UNIVERSITY QUESTION, 2012, M.C.A, Part-III, Paper-XXV, (Computer Graphics and Multimedia)

                                                                              2012
                                                                      Full Marks: 80
                                                                       Time: 3 hours
                                         Answer any five questions. All questions carry equal marks.

1. How do we simulate deceleration in animation scenes? Why the animation seems to be decelerating if the spacing between frames keeps on decreasing? Graphically discuss the mathematical function used to produce deceleration in any animation?

2. Compare and contrast the following:-
    (i) Cyrus Beck and Cohen sutherland line clipping algorithms.
    (ii) Random and Raster Scan display devices.
   
3. With the help of Suitable diagram  and related tables describe how frame buffer can be used to control the color and intensity of the picture display?

4. Say ABC is a triangle with coordinates A (-2,0), B (-1,1), C(-1,-1). Find the transformed coordinates when the triangle ABC is subjected to the anticlockwise rotation of 45 degree about an axis passing through the centroid of the triangle such that it is parallel to y axis?

5. A polygon has 4 vertices located at A (10,10), B(10,40), C (40,10), D(40,40). Indicate a transformation matrix to have its reflection about X-axis?

6. Briefly describe following file formats:-
    (i) MPEG
    (ii) MP3
    (iii) GIF
    (iv) JPG
    (v) WAV

7. Compare and contrast the perspective projection with the parallel projection? Justify your answer that parallel projections preserves lateral measurements?

8. How many key frames are required to produce an animation film sequence with duplications, having duration of five minutes? What do you mean by terms Cell animation and sprite animation? Suggest which techniques of animation is better and why?

9. Differentiate between following:-
    (i) Morphing and panning
    (ii) Motion specific animation and Motion Generalized animation.

10. What do you mean by specular reflection? Is there any relation of surface texture with the type of reflection produced on the exposure of that surface to some light source? Explain with the help of diagram and suitable mathematical equations?