Images Flashcards
1
Q
Raster
A
- represented as “pixels”
- navigate from top left to bottom right
- JPEG, GIF
- width and heigh of image are also required to render image from list of pixel values
2
Q
Vector
A
- represented as points, lines, cures
- order of vector unimportant
- SVG, PDF
3
Q
Gray Scale Raster
A
- each pixel is a single integer specifying its grayscale value
0 = black
255 = white
4
Q
Colour Raster
A
- each pixel is a triple of integers specifying RGB values
- additive primary colours
5
Q
Hexadecimal
A
- represents 24 bit RGB value
6
Q
bit
A
binary digit
- basic unit of storage/computation
- 1 byte = 8 bits = 2 hex digits
7
Q
Computational counting
A
hexa = base 16 = 0x octal = base 8 = 0o bi = base 2 = 0b
8
Q
Memory, storage/size
A
bytes
often reported with base 10 rather than 2
1kb = 1000 bytes
9
Q
Network speed
A
bits
10
Q
kilo
A
2^10
11
Q
mega
A
2^20
12
Q
giga
A
2^30
13
Q
tera
A
2^40
