NATIONAL OPEN UNIVERSITY OF NIGERIA

UNIVERSITY VILLAGE, PLOT 91, CASDASTRAL ZONE, NNAMDI AZIKIWE EXPRESS WAY, JABI, ABUJA.
FACULTY OF SCIENCES
MARCH/APRIL 2016 EXAMINATION

COURSE CODE:                                                                              CIT371                                                                

COURSE TITLE:                                                                             Introduction to Computer Graphics and Animation

DURATION:                                                                                     3 Hours

INSTRUCTIONS:                                                                            Answer any Five Questions

Q1a.     In computer graphics what is high dynamic range imaging (HDRI)

     b.    Given a point cloud, polygon, or sampled parametric curve, enumerate four purposes for which transformations can be used.

     c.     Using a well labeled block diagram discuss geometric pipeline.

Q2a.     What is raster graphics.

 b.     Define the term “Light” and explain the following properties of light: reflection and refraction.

 c.     Using diagrams only, illustrate Perspective Projection and Orthographic Projection.

Q3a.     What is light?

     b.    Explain what is meant by motion capture.

     c.     Illustrate a graphic system using a detailed block diagram.

Q4a.     Explain the following color models

                        RGB colour model.

                        YIQ colour model.

                        CMYK colour model.

                        HSV and HSL colour model.

Q5a.     Define a Graphic Processing Unit (GPU)

     b.    List and discuss the classes and properties of Bi-directional Reflection Distribution Function (BRDF).

Q6a.     Discuss the Cognitive process Hypothesis.

     b.    Discuss any five advantages and five disadvantages of motion capture.

Q7a.     Using a well labeled block diagram discuss geometric pipeline.

     b.    In order to calculate surface radiance at an intersection point, one of the cached photon maps used. Highlight the steps involved.