Representing images Flashcards
1
Q
What is a pixel?
A
The smallest distinguishable feature(tiny squares)
2
Q
What’s resolution?
A
The measure of the clarity of an image (how detailed an image is)
3
Q
Formula for resolution
A
Resolution = width(pixels) * height(pixels)
4
Q
How are images converted?
A
A grid is placed over the original image
An average colour is found for each pixel
A binary value is assigned to each pixel
each pixel is represented by multiple bits(one combination per shade)
5
Q
What is colour depth?
A
The number of bits used to represent the colour of each pixel
6
Q
Formula for file size?
A
file size(bits) = resolution(pixels) * colour depth(bits)
7
Q
what is meta data?
A
Data stored alongside an image :
file name, file format
