Computer Graphics End Semester Question Paper
•
1 like•443 views
Computer Graphics End Semester Question Paper
![NATIONAL INSTITUTE OF TECHNOLOGY JAMSHEDPUR
AUTUMN SEMESTER 2016-17
Department of Computer Science and Engineering
End Semester
Course Code: CS504 Course Title: Computer Graphics (5th
Sem)
Date: 06/12/2016 Course Instructor: Ansuman Mahapatra
Duration: 3 Hours Maximum Marks: 40
All Questions are compulsory. Assume if any data missing.
1. Explain with examples. [3×5]
a. Discuss the properties of Bezier and B-spline and explain the difference between them.
b. What is the use of Lookup Table in RGB color representation? If a lookup table contains 256 colors
and we have to display an image of size 1024 × 1024. What is the storage space of frame buffer.
c. What are the types of affine transformations? How window to viewport transformation is achieved?
d. Explain different types of B-Spline curves. What are the boundary conditions for cubic periodic B-
spline.
e. Draw the block diagram of a graphics system and explain the functionality of each blocks.
2. The scene contains two triangles having vertices {(0,7,5), (6,7,5), (0,1,5)} and {(0,6,7), (0,1,2), (5,1,7)}.
Apply Z-buffer method to find the values inside the depth buffer of size 10 × 10. [5]
3. Calculate (x,y) coordinates of Bezier curve described by the following 4 control points: (0,0), (1,2), (3,3),
(4,0). Given Δu = 0.2. Draw the final curve joining all the coordinate with straight lines. [5]
4. Assume you have modelled a solid rectangular box in the scene with vertices {(1,0,4), (4,0,4), (4,5,4), (1,5,4),
(1,0,1), (4,0,1), (4,5,1), (1,5,1)} has ka=0.5, kd=0.25, ks=0.25, and ns=10. Let a monochromatic point light
source is at point (1,1,3) with intensity 2 units and ambient light with intensity 1 unit. Viewer is at the position
(3,2,3). [5+5+5]
a. What will be the intensity at the point (4,0,2), given unit normal as (0,0,1)?
b. Considering flat shading, what will be the intensities at the points (3,2,2), (4,2,3) and (2,2,1)? What
will be the intensities at those points if the viewer changes its position to (3,2,0)?
c. Considering Gouraud shading, what will be the intensities at the points {(1,0,4), (4,0,4), (3,0,4), and
(3,1,4). Viewer is at position (3,2,3)?
---------------------------------](https://image.slidesharecdn.com/cgendsem-170214132842/85/Computer-Graphics-End-Semester-Question-Paper-1-320.jpg)
Recommended
More Related Content
What's hot
What's hot (18)
Similar to Computer Graphics End Semester Question Paper
Similar to Computer Graphics End Semester Question Paper (20)
Recently uploaded
Recently uploaded (20)
Computer Graphics End Semester Question Paper
- 1. NATIONAL INSTITUTE OF TECHNOLOGY JAMSHEDPUR AUTUMN SEMESTER 2016-17 Department of Computer Science and Engineering End Semester Course Code: CS504 Course Title: Computer Graphics (5th Sem) Date: 06/12/2016 Course Instructor: Ansuman Mahapatra Duration: 3 Hours Maximum Marks: 40 All Questions are compulsory. Assume if any data missing. 1. Explain with examples. [3×5] a. Discuss the properties of Bezier and B-spline and explain the difference between them. b. What is the use of Lookup Table in RGB color representation? If a lookup table contains 256 colors and we have to display an image of size 1024 × 1024. What is the storage space of frame buffer. c. What are the types of affine transformations? How window to viewport transformation is achieved? d. Explain different types of B-Spline curves. What are the boundary conditions for cubic periodic B- spline. e. Draw the block diagram of a graphics system and explain the functionality of each blocks. 2. The scene contains two triangles having vertices {(0,7,5), (6,7,5), (0,1,5)} and {(0,6,7), (0,1,2), (5,1,7)}. Apply Z-buffer method to find the values inside the depth buffer of size 10 × 10. [5] 3. Calculate (x,y) coordinates of Bezier curve described by the following 4 control points: (0,0), (1,2), (3,3), (4,0). Given Δu = 0.2. Draw the final curve joining all the coordinate with straight lines. [5] 4. Assume you have modelled a solid rectangular box in the scene with vertices {(1,0,4), (4,0,4), (4,5,4), (1,5,4), (1,0,1), (4,0,1), (4,5,1), (1,5,1)} has ka=0.5, kd=0.25, ks=0.25, and ns=10. Let a monochromatic point light source is at point (1,1,3) with intensity 2 units and ambient light with intensity 1 unit. Viewer is at the position (3,2,3). [5+5+5] a. What will be the intensity at the point (4,0,2), given unit normal as (0,0,1)? b. Considering flat shading, what will be the intensities at the points (3,2,2), (4,2,3) and (2,2,1)? What will be the intensities at those points if the viewer changes its position to (3,2,0)? c. Considering Gouraud shading, what will be the intensities at the points {(1,0,4), (4,0,4), (3,0,4), and (3,1,4). Viewer is at position (3,2,3)? ---------------------------------