Question 1

Define Computer Graphics.

Accepted Answer

Computer Graphics is the algorithmic creation, manipulation, and rendering of visual images via computer hardware.

Question 2

What is Pixel?

Accepted Answer

A Pixel (Picture Element) is the absolute smallest controllable luminous element on a digital display.

Question 3

Define Resolution.

Accepted Answer

Resolution mathematically defines the total physical density of pixels on a display screen.

Question 4

What is Rasterization?

Accepted Answer

Rasterization mathematically converts continuous vector graphics into discrete, physical pixel matrices.

Question 5

Define Clipping.

Accepted Answer

Clipping algorithmically removes visual data that mathematically falls outside the designated viewing window.

Question 6

What is Transformation?

Accepted Answer

Transformation alters the geometric state (position, size, angle) of an object using matrix algebra.

Question 7

Define Bezier Curve.

Accepted Answer

A Bezier Curve is a parametric curve mathematically defined by a set of physical control points.

Question 8

What is Rendering?

Accepted Answer

Rendering is the final physical synthesis of a 2D image from a 3D mathematical model.

Question 9

Define Multimedia.

Accepted Answer

Multimedia is the integrated synthesis of various digital data forms like text, audio, and video.

Question 10

What is MPEG?

Accepted Answer

MPEG is an advanced standard algorithm for the extreme compression of digital audio and video.

Question 11

Explain the DDA Line Drawing Algorithm.

Accepted Answer

A rigorous mathematical breakdown of the Digital Differential Analyzer (DDA) Line Drawing Algorithm, detailing its floating-point step calculations and geometric rasterization methodology.

Question 12

Describe Bresenham's Circle Drawing Algorithm.

Accepted Answer

A comprehensive architectural explanation of Bresenham's Circle Drawing Algorithm, highlighting its extreme computational efficiency through integer-only arithmetic and eight-way geometric symmetry.

Question 13

Explain the concept of 2D Transformations (Translation, Rotation, Scaling).

Accepted Answer

A strict mathematical exploration of 2D Matrix Transformations, explicitly detailing the linear algebra operations for Translation, Rotation, and Scaling using Homogeneous Coordinates.

Question 14

Discuss the Cohen-Sutherland Line Clipping Algorithm.

Accepted Answer

A detailed algorithmic analysis of the Cohen-Sutherland Line Clipping technique, explaining its rigorous use of 4-bit region codes and bitwise logical AND operations to rapidly discard unseen geometry.

Question 15

Explain the concept of 3D Transformations.

Accepted Answer

A rigorous exposition on 3D Geometric Transformations, explaining how 2D matrices are expanded into 4x4 Homogeneous Matrices to mathematically manipulate objects in a three-dimensional Z-axis coordinate space.

Question 16

Describe the different types of Multimedia components.

Accepted Answer

A detailed categorization of the five absolute components of Multimedia architecture: Text, Graphics, Audio, Video, and Animation, outlining their distinct digital properties and application domains.

Question 17

Explain the concept of Image Compression.

Accepted Answer

A comprehensive technical overview of Image Compression, detailing the rigorous mathematical distinction between Lossless (Run-Length, Huffman) and Lossy (DCT, JPEG) compression algorithms.

Question 18

(a) Explain the Bresenham's Line Drawing Algorithm with a suitable example. C…

Accepted Answer

An exhaustive, algorithmic breakdown of Bresenham's Line Drawing algorithm, complete with a step-by-step mathematical derivation of the decision parameter, a concrete computational example, and a severe comparative analysis against the floating-point DDA architecture.

Question 19

(a) Explain the various 2D Transformation techniques in detail.

Accepted Answer

A highly advanced mathematical formulation of 2D Transformation matrices using Homogeneous Coordinates, detailing the linear algebra operations for Translation, Rotation, Scaling, Reflection, and Shearing.

Question 20

(a) Explain the concept of Bezier and B-Spline curves.

Accepted Answer

A deep architectural comparison of Bezier and B-Spline curves, detailing their rigorous reliance on Bernstein polynomials, control point magnetic attraction, and the critical distinction between global and local mathematical control.

Question 21

(a) Explain the different Visible Surface Detection algorithms.

Accepted Answer

A definitive technical analysis of Visible Surface Detection algorithms, exhaustively contrasting Object-Space methods with Image-Space methods, and detailing the Z-Buffer and Depth-Sorting (Painter's) architectures.

Question 22

(a) Explain the different Multimedia file formats (JPEG, GIF, MP3, MPEG).

Accepted Answer

A rigorous technological breakdown of the absolute primary Multimedia file formats, detailing the mathematical compression algorithms, bit-depth limitations, and psycho-acoustic models driving JPEG, GIF, MP3, and MPEG standards.

Computer Graphics and Multimedia