NATIONAL OPEN UNIVERSITY OF NIGERIA

UNIVERSITY VILLAGE, PLOT 91, CASDASTRAL ZONE, NNAMDI AZIKIWE EXPRESS WAY, JABI, ABUJA.
FACULTY OF SCIENCES
JUNE/JULY 2014 EXAMINATION

COURSE CODE:                                                                              CIT371                                                                

COURSE TITLE:                                                                             Introduction to Computer Graphics and Animation

DURATION:                                                                                     3 Hours

INSTRUCTIONS:                                                                            Answer any Five Questions

Q1a.     Explain what is meant by vector.                                                                                         (5 marks)

     b.    List two differences between a point and a vector.                                                           (6 marks)

     c.     Enumerate three uses of Vectors in computer graphics.                                                              (3 marks)

Q2a.     Explain the bump mapping concept.                                                                                    (4 marks)

 b.     List two methods used to perform bump mapping.                                                          (6 marks)

 c.     State the primary limitation of bump mapping.                                                                  (4 marks)

Q3a.     What is computer animation?                                                                                              (5 marks)

     b.    Explain in details computer animation technique.                                                             (5 marks)

     c.     Give one open challenge in computer animation                                                               (4 marks)

Q4a.     Explain what is meant by computer simulation.                                                                 (5 marks)

     b.    State two merits and demerits of physically-based animation.                                        (4 marks)

     c.     List five application areas of simulation in various fields.                                                (5 marks)

Q5a.     Explain the following colour models:

1. RGB colour model
2. YIQ colour space
3. CMYK colour model
4. HSV and HSL colour models                                                                        (14 marks)

Q6a.     Explain the human perception of colour.                                                                            (4 marks)

     b.    Give the two sources of HDR imagery.                                                                                (4 marks)

     c.     List the three main types of optical illusion with concrete examples.                            (6 marks)

Q7a.     Explain ray tracing.                                                                                                                (3 marks)

     b.    Why is ray tracing so named?                                                                                              (3 marks)

     c.     What makes ray tracing different from other scanline rendering methods?                 (4 marks)

     d.    State four advantages of Monte-Carlo ray tracing.                                                            (4 marks)