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Image Representation

How many possible colours are there per pixel?
16 million
20 million
Coloured squares are called ...
Picture processes
Picture elements
Give three reasons why computer systems use the binary number system
There are only a few rules for addition, making calculations simple
It is just as accurate as the decimal system.
Binary is a two-state system (1 or 0) which represents ‘power on/power off’
A degraded signal can still be detected as representing 1
What is the number 129 represented as a 8-bit binary number?
11010101
10000001
What is the largest number that can be stored using 6 bits?
63
64
62
61
How is a bitmap graphic stored in memory:
A single bit stores each pixel (1 for black, 0 for white)
A single byte stores each pixel (1 for black, 0 for white)
A single bit stores each pixel (0 for black, 1 for white)
A single byte stores each pixel (0 for black, 1 for white)
What is a pixel?
The most basic component of any computer number
The most basic component of any computer program
The most basic component of any computer letter
The most basic component of any computer graphic
What is meant by 'high resolution'?
A bit map image that contains
A bit map image that contains
A bit map image that contains
A bit map image that contains
What does 'dpi' stand for?
Dots per interval
Decimals per inch
Digits per inch
Dots per inch
3.Which is the following image formats is the least suitable for computer vision?
PNG
BMP
JPEG
TIFF
Why are digital images usually rectangularly-sampled?
Becuase they are easier to process with a computer
Because that is a better match for the human eye's rod and cones
Because of the way the images are formed on a photographic film
Because it is nearly inmpossible to make hexagonally- spaced CCD's
How is an image represented in OpenCV?
As a 2D array of pixels
As a 1D array of pixels
As a 2D array of colour chanels
As a 1D array of colour chanels
Vectors use ...
Straight lines
Diagonals
Curves
Shapes
Compression attributes to ...
File size
CAD packages
File name
Colour depth
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