Topic 4: Graphic Flashcards
1
Q
definition of graphic
A
digital representation of non-text information
2
Q
functions of graphic
A
- background
- informational content
- navigational controls for multimedia products
3
Q
two types of graphic
A
- bitmap
- vector
4
Q
define bitmap
A
- raster graphics or pixelized graphic
- combination blocks of different colors (pixel) to represent an image
- specific location and color value
5
Q
characteristics of bitmap
A
- represent subtle gradation of shades and color by blending pixels
- resolution-dependent
- difficult to increase or decrease size without sacrificing quality
6
Q
what is interpolation
A
decrease size - throw away pixels
increase size - create new pixels by estimating color values based on surrounding pixel
7
Q
define vector
A
- made up of lines and curves by mathematical objects called vector
- store each objects as formula
8
Q
characteristics of vector
A
- resolution-independent
- scaled to any size and printed at any resolution without losing detail
9
Q
functions of vectors
A
- logos
- font
- charts and graphs
10
Q
advantages of vector
A
small file sized - store only instructions not the data of pixel
reusability - easily resized, recolored and reshaped
not restricted to a rectangular shape - placed over objects below will show through
11
Q
disadvantages of vector
A
- no standard vector-based file formats
12
Q
3 types of resolution
A
- color
- image
- display
13
Q
define color resolution
A
- refer to number of color one pixel can represent, in bits
14
Q
define image resolution
A
- measures the dimension of an overall image
- in width and height
15
Q
define display resolution
A
- number of pixels can be displayed on computer screen
