Lecture 1 - Introduction

Question 1

All 2D digital images fall into one of two
categories; name them

Answer 1

bitmap or vector graphics

Question 2

the word pixel is an abbreviation of the
words…

Answer 2

picture element

Question 3

gives the dimensions of the
bitmap that represents the image.

Answer 3

Image Resolution

Question 4

Image resolution is typically and accurately
described as

Answer 4

width x height (in pixels)

Question 5

indicates the number of pixels
that you can see on your computer screen.

Answer 5

Screen Resolution

Question 6

The smallest storage unit in computer memory is

Answer 6

a byte

Question 7

A byte has

Answer 7

8 bits

Question 8

Each pixel is stored in 1 byte

Answer 8

B&W image

Question 9

Each pixel is stored in 3 bytes

Answer 9

color image

Question 10

Vector Images

Answer 10

Drawings created using applications
such as INKSCAPE, CorelDraw or Adobe Illustrator.

Question 11

Resolution-independent

Answer 11

Vector Images
Advantages

Question 12

*Resizing does not affect lines quality
*Images are not restricted to rectangular shapes

Answer 12

Vector Images:
Advantages

Question 13

*More appropriate when placing objects on top of
other objects or overlapping.
*Can be easily converted to bitmaps (rasterizing)

Answer 13

Vector Images:
Advantages

Question 14

Vector Images:
Disadvantages

Answer 14

They do not produce photo-realistic images -
cartoon-like appearance.
* They cannot depict the continuous subtle tones of a photograph