My Profile
Active Members
TodayLast 7 Days
more...
Awards & Gifts
Online Exams
Fresher Jobs
Our fresher job section is exclusively for fresh graduates! Find jobs for freshers in major Indian
cities including Bangalore, Chennai, Hyderabad, Pune or Kochi
Resources
Find educational articles, blogs, discussion threads and other resources.
Colleges
Find details about any college in India or search for courses.
|
Download Model question papers & previous years question papers
|
Posted By: BHARATH Member Level: Gold Posted Date: 19 Feb 2008
|
2007 Jawaharlal Nehru Technological University Mechanical Engineering IV B.Tech II Semester Regular Examinations, Apr/May 2007 COMPUTER GRAPHICS Question paper
|
|
|
Code No: RR420306 Set No. 1
IV B.Tech II Semester Regular Examinations, Apr/May 2007
COMPUTER GRAPHICS
( Common to Mechanical Engineering and Production Engineering)
Time: 3 hours Max Marks: 80
Answer any FIVE Questions
All Questions carry equal marks
? ? ? ? ?
1. (a) Explain an algorithm for ellipse generation.
(b) If a TV screen has 525 scan lines and an aspect ratio of 3:4,and if each pixel
contains 8 bits worth of intensity information, how many bits per second are
required to show 30 frames each second? [12+4]
2. (a) Explain the role of display interpreter in graphical display, with a block dia-
gram.
(b) What is meant by normalized device co-ordinate system? What are its advan-
tage? [6+10]
3. Give 3x3 homogeneous-coordinate transformation matrix which will have the same
effect as each of the following transformation techniques:
(a) Translate down 1 unit and right 1 unit , and then rotate counter-clockwise by
45 degrees.
(b) Scale the y coordinate to make the image twice as tall, shift it down 1 unit
rotate clockwise by 30 degrees. [8+8]
4. What are the various operations to be performed on the segments? Discuss various
data structures that can be used for storing segments in the display files. [16]
5. Explain the Cohen-Sutherland algorithm for finding the category of a line segment.
Show clearly how each category is handled by the algorithm. [16]
6. Explain the following:
(a) 1-Point, 2-point perspective projections.
(b) Viewing parameters. [8+8]
7. Write about the following:
(a) Gourand shading.
(b) Painter’s algorithm. [8+8]
8. (a) Explain display processor system. [8+8]
(b) Write about B-splines.
? ? ? ? ?
1 of 1
Code No: RR420306 Set No. 2
IV B.Tech II Semester Regular Examinations, Apr/May 2007
COMPUTER GRAPHICS
( Common to Mechanical Engineering and Production Engineering)
Time: 3 hours Max Marks: 80
Answer any FIVE Questions
All Questions carry equal marks
? ? ? ? ?
1. (a) Explain the ‘stroke method’and the ‘bitmap method’ for generating characters.
(b) Discuss the antialiasing methods for lines. [8+8]
2. (a) Briefly explain the steps involved in scan-line algorithm for polygon filling.
(b) What are the merits and demerits of flood-fill and scan-line algorithms?[10+6]
3. Give 3x3 homogeneous-coordinate transformation matrix which will have the same
effect as each of the following transformation techniques:
(a) Scale the image to be twice as large and then rotate counter-clockwise by 90
degrees about the origin.
(b) Rotate clockwise about the origin by 45 degrees and then scale the y-direction
to be one-half as large. [8+8]
4. Write procedures for creating and closing segments. [16]
5. Explain the Cohen-Sutherland algorithm for finding the category of a line segment.
Show clearly how each category is handled by the algorithm. [16]
6. (a) Give a brief account on three-dimensional rotations.
(b) Show the sequence of transformations for rotating an object about an axis
that is parallel to the x axis [6+10]
7. Describe, in detail, Gouraud shading.Using Gouraud shading, if pixels A,B,C and
D have the intensities
A: 0.3
B: 0.11
C: 0.5
D: 0.2
What intensities should be assigned to pixels E and F? as shown as in figure7
Figure 7
[16]
1 of 2
Code No: RR420306 Set No. 2
8. Describe Bezier surface generation technique with examples. [16]
? ? ? ? ?
2 of 2
Code No: RR420306 Set No. 3
IV B.Tech II Semester Regular Examinations, Apr/May 2007
COMPUTER GRAPHICS
( Common to Mechanical Engineering and Production Engineering)
Time: 3 hours Max Marks: 80
Answer any FIVE Questions
All Questions carry equal marks
? ? ? ? ?
1. (a) Explain an algorithm for ellipse generation.
(b) If a TV screen has 525 scan lines and an aspect ratio of 3:4,and if each pixel
contains 8 bits worth of intensity information, how many bits per second are
required to show 30 frames each second? [12+4]
2. (a) Explain and demonstrate with suitable examples“ the even-odd method”of
determining the polygon interior points.
(b) Explain the flood-fill algorithm for filling polygons. [8+8]
3. Give 3x3 homogeneous-coordinate transformation matrix which will have the same
effect as each of the following transformation techniques:
(a) Scale the image to be twice as large and then rotate counter-clockwise by 90
degrees about the origin.
(b) Rotate clockwise about the origin by 45 degrees and then scale the y-direction
to be one-half as large. [8+8]
4. Derive the window-to-view port transformation equations by first scaling the win-
dow to the size of the view port and then translating the scaled window to the view
port position. [16]
5. Explain the Cohen-Sutherland algorithm for finding the category of a line segment.
Show clearly how each category is handled by the algorithm. [16]
6. (a) Derive the transformation that rotates an object point ? degree about the
x-axis. Write the matrix representation for this rotation .
(b) Write a short notes on parallel projections. [10+6]
7. Describe, in detail, Gouraud shading.Using Gouraud shading, if pixels A,B,C and
D have the intensities
A: 0.3
B: 0.11
C: 0.5
D: 0.2
What intensities should be assigned to pixels E and F? as shown as in figure7
1 of 2
Code No: RR420306 Set No. 3
Figure 7
[16]
8. (a) What are the advantages of B-splines over Bezier Curves?
(b) Differentiate between interpolation and approximation in spline representa-
tions.
(c) Give the applications of raster scan graphics. [4+5+7]
? ? ? ? ?
2 of 2
Code No: RR420306 Set No. 4
IV B.Tech II Semester Regular Examinations, Apr/May 2007
COMPUTER GRAPHICS
( Common to Mechanical Engineering and Production Engineering)
Time: 3 hours Max Marks: 80
Answer any FIVE Questions
All Questions carry equal marks
? ? ? ? ?
1. (a) Illustrate the applications of computer graphics.
(b) What is the stair-care effect in line generation? [8+8]
2. (a) Explain and demonstrate with suitable examples“ the even-odd method”of
determining the polygon interior points.
(b) Explain the flood-fill algorithm for filling polygons. [8+8]
3. Prove that a line can be transformed by applying the transformation to the end
points of the line and then constructing a new line between the transformed end
points. [16]
4. Derive the window-to-view port transformation equations by first scaling the win-
dow to the size of the view port and then translating the scaled window to the view
port position. [16]
5. Explain the logic of the Sutherland-Hodgman algorithm with the help of a neat
flowchart. Illustrate the working of your flowchart with the help of a suitable
example. [16]
6. (a) Give a brief account on three-dimensional rotations.
(b) Show the sequence of transformations for rotating an object about an axis
that is parallel to the x axis [6+10]
7. Write about the following:
(a) Gourand shading.
(b) Painter’s algorithm. [8+8]
8. Explain the following:
(a) Simple raster display system
(b) Sweeping method of interpolation. [8+8]
? ? ? ? ?
1 of 1
Return to question paper search
|
|
|
Submit Previous Years University Question Papers and make money from adsense revenue sharing program
Are you preparing for a university examination? Download model question papers
and practise before you write the exam.
|
Watch TV Channels
Watch Asianet TV onlineKairali TV in InternetSurya TV onlineAmritha TV Channel
|