# NPTEL Computer Graphics Assignment 2 Answers 2022

NPTEL Computer Graphics Assignment 2 Answers 2022:- Hello students in this article we are going to share NPTEL Computer Graphics Assignment week 2 answers. All the Answers are provided below to help the students as a reference, You must submit your assignment with your own knowledge.

## NPTEL Computer Graphics Assignment 2 Answers 2022

1. Space-partitioning methods include techniques such as constructive solid geometry.

a. True
b. False

`Answer:- a`

2. Quadric surfaces refers to those objects, which (or the surface of which) are described with degree 3 equations (i.e., cubic equations).

a. True
b. False

`Answer:- b`

3. The idea of fitting a set of control points with several polynomials to generate curve is called _________.

a. Spline
b. Point
c. Boundary

`Answer:- a`

4. De Casteljau algorithm used to generate ________.

a. Bezier line
b. Bezier curves
c. Bezier surface
d. Bezier control point

`Answer:- b`

5. Techniques that represent an object by representing the individual object surfaces are ____________.

a. Point sample representation
b. Boundary representation
c. Sweep representation

`Answer:- b`

6. Natural cubic splines are examples of interpolating splines

a. True
b. False

`Answer:- a`

7. Natural cubic spline are made up of pieces of __________________ degree polynomial.

a. first
b. second
c. third
d. fourth

`Answer:- c`

8. Spline refers to ___________________ of several polynomials.

a. difference
b. joining
c. division
d. multiplication

`Answer:- b`

9. To represent a blobby object a suitable combination of Gaussian density functions is used. The Gaussian density function is characterized by two parameters: height and __________________.

a. length
b. standard error
c. standard deviation
d. blobby factor

`Answer:- c`

10. There are two types of continuity conditions: parametric continuity and __________ continuity. (fill in the blank)

`Answer:- GEOMETRIC`

## What is Computer Graphics?

Computer graphics is one of the fundamental aspects of any computing system. Its primary role is to render the digital content (0’s and 1’s) in a human-comprehensible form on the computer screen. The rendering follows a series of stages, collectively known as the graphics pipeline. In this course, we will introduce the pipeline and its stages. The topics covered include various object representation techniques followed by the pipeline stages of modeling transformation.

3D to 2D viewing transformation, clipping and hidden surface removal and scan conversion (rendering). We shall follow the stages of the 3D graphics pipeline. In order to complete the coverage, we shall also briefly introduce the present day graphics hardware (I/O devices, GPU) and the widely popular openGL graphics library.

COURSE LAYOUT

• Week 1: Introduction – historical evolution, issues and challenges, graphics pipeline, hardware and software basics
• Week 2: Object representation – boundary representation, splines, space partitioning
• Week 3:  Modeling transformations – matrix representation, homogeneous coordinate system, composition, 3D transformations
• Week 4: Illumination and shading – background, simple lighting model, shading models, intensity representation, color models, texture synthesis
• Week 5: 3D viewing – viewing pipeline, view coordinate system, viewing transformation, projection, window-viewport transformation
• Week 6: Clipping and hidden surface removal – clipping in 2D. 3D clipping algorithms, hidden surface removal
• Week 7:  Rendering – scan conversion of line, circle, fill-area and characters, anti-aliasing
• Week 8: Graphics hardware and software – generic architecture, I/O, GPU, Shader programming, graphics software (openGL)

CERTIFICATE

The course is free to enroll and learn from. But if you want a certificate, you have to register and write the proctored exam conducted by us in person at any of the designated exam centres.
The exam is optional for a fee of Rs 1000/- (Rupees one thousand only).
Date and Time of Exams: 25 September 2022 Morning session 9am to 12 noon; Afternoon Session 2pm to 5pm.
Registration URL:

Announcements will be made when the registration form is open for registrations.
The online registration form has to be filled and the certification exam fee needs to be paid. More details will be made available when the exam registration form is published. If there are any changes, it will be mentioned then.
Please check the form for more details on the cities where the exams will be held, the conditions you agree to when you fill the form etc.

CRITERIA TO GET A CERTIFICATE

Average assignment score = 25% of average of best 6 assignments out of the total 8 assignments given in the course.
Exam score = 75% of the proctored certification exam score out of 100

Final score = Average assignment score + Exam score

YOU WILL BE ELIGIBLE FOR A CERTIFICATE ONLY IF AVERAGE ASSIGNMENT SCORE >=10/25 AND EXAM SCORE >= 30/75. If one of the 2 criteria is not met, you will not get the certificate even if the Final score >= 40/100.