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Bit 2304 Computer Graphics Question Paper

Bit 2304 Computer Graphics

Course:Bachelor Of Science In Information Technology

Institution: Kca University question papers

Exam Year:2014

UNIVERSITY EXAMINATIONS: 2013/2014
ORDINARY EXAMINATION FOR THE BACHELOR OF SCIENCE
IN INFORMATION TECHNOLOGY
BIT 2304 COMPUTER GRAPHICS
DATE: AUGUST, 2014
TIME: 2 HOURS
INSTRUCTIONS: Answer Question ONE and any other TWO
QUESTION ONE (30 MARKS)
a) Why are matrix representations used to describe point transformations in computer
graphics?
[6 marks]
b) Describe how to represent three different 2D transformations as matrices.
[6 marks]
c) Explain how to derive a sequence of transformations to achieve the overall effect of
performing a 2D rotation about an arbitrary point.
[ 8 Marks]
Consider the following figure:
d) Give a matrix, or product of matrices, that will transform the square ABCD into the
rectangle A'B'C'D'.
[5 marks]
e) Show what happens if the same transformation is applied to A'B'C'D'.
[5 marks]
1
QUESTION!FIVE!(20!MARKS)!
QUESTION TWO (20 MARKS)
!
Quadtrees are commonly used for encoding digital images in a compact form. The
Quadtrees!are!commonly!used!for!encoding!digital!images!in!a!compact!
specific cell values in the 8x8 Raster image are shown below.
form.!Generate!a!quadtree!to!represent!the!following!image.! Generate a quadtree to
!
represent the following image.
!
!
/END!
QUESTION THREE (20 MARKS)
!
a) Differentiate between emissive and non-emissive flat panel displays.
[4 Marks]
b) An RGB raster system is to be designed using an 8 inch x 10 inch screen with a
resolution of 100 pixels per inch in each direction. Calculate the amount of storage in
megabytes needed for the frame buffer in order to store 6 bits/pixel in the frame
buffer.
[8 Marks]
c) Define the term ‘aliasing’ as used in graphics displays.
[4Marks]
d) Discuss two major types of aliasing
[4Marks]
QUESTION FOUR (20 MARKS)
a) In detail, describe the different methods (at least 5) of generating computer
graphic models.
[10 Marks]
b) In detail, describe 3 different methods of generating Animation in computer
graphics.
[10 Marks]
2
QUESTION FIVE (20 MARKS)
a) What is OpenGL? List 2 other technologies similar to OpenGL.
[5 Marks]
b) Distinguish between Programming and interactive techniques for generating graphic
models. In each give specific examples.
[ 5 Marks]
c) For each of the following OpenGL commands, use a figure to depict what each
represents.
GL_POINTS
GL_LINES
GL_LINE_STRIP
GL_LINE_LOOP
GL_POLYGON
GL_TRIANGLES
GL_TRAINGLE_STRIP
GL_TRIANGLE_FAN
GL_QUADS
GL_QUAD_STRIP

[10 Marks]
3

Bit 2304 Computer Graphics Question Paper

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