These are solution notes to selected past examination questions.
Please note that they are solution notes designed to help the
internal and external examiners check the quality of the questions.
They are not model answers. Complete answers in an examination
would be expected to have more detail than these notes. For security
the solution notes were hand written. I have provided all of
the solution notes that I have been able to locate. The notes
incorporate the marking scheme for the question. Sometimes the
marking scheme is annotated with a set of unique letters or characters
or tick marks, this indicates how the marker indicated, on the
student's examination answer, that the student had made the
appropriate point.
Computer Graphics & Image Processing
Question (PDF)  Solution notes (PDF)  Subject 
2006/3/8  Solution notes  compare and contrast zbuffer, BSP, painter's algorithms 
2006/5/5  Solution notes  Bézier curve, homogeneous coordinates 
2006/6/5  Solution notes  CMYK, error diffusion/halftoning, filters 
2005/3/8  Solution notes  resolution, error diffusion 
2005/5/5  Solution notes  line clipping, homogeneous coordinates, transformations 
2005/6/6  Solution notes  lighting equation, compare and contrast ray tracing and zbuffer 
2004/3/8  Solution notes  full 3D polygon drawing algorithm 
2004/5/5  Solution notes  circle drawing, Bézier curve drawing 
2004/6/5  Solution notes  RGB and human vision, error diffusion/halftoning, specular & diffuse reflection 
2003/3/8  Solution notes  colour spaces, runlength encoding, Bezier 
2003/5/5  Solution notes  Abuffer, halftoning 
2003/6/5  Solution notes  transforms, clipping 
2002/3/8  Solution notes  Bezier, clipping 
2002/4/8  Solution notes  vision, z/Abuffer, transformations 
2001/5/4  Solution notes  vision, compression 
2001/6/4  Solution notes  zbuffer, illumination 
2000/4/10  Solution notes  full 3D polygon drawing algorithm 
2000/5/4  Solution notes  CRT, runlength encoding 
2000/6/4  Solution notes  circle, transformations, Bézier curve 
1999/4/10  Solution notes  Bézier curve, sampling in ray tracing, BSP vs depth sort 
1999/5/4  Solution notes  display resolution, error diffusion, dither matrix 
1999/6/4  Solution notes  transformations, polygon clipping 
1998/4/10  Solution notes  illumination, ray tracing 
1998/5/4  Solution notes  clipping, transformations 
1998/6/4  Solution notes  display, colour, compression 
The mark distributions for CGIP questions are available (PDF, 67kB). Graphics questions may look easy, but it is a challenge to get a good mark. In particular, many students give incomplete or incorrect descriptions of algorithms.
