Images: How an image is represented as a series of pixels, represented in binary
1.2.4c Data Storage: Images
Practise exam questionsData Storage: Images — Note 2 of 4
Digital images are made up of tiny squares called pixels (picture elements). Each pixel has a colour value stored in binary. The more pixels and the more bits per pixel, the higher quality the image — but also the larger the file size.
2^1). A colour depth of 8 bits = 256 colours (2^8). 24 bits = over 16 million colours.A single point (tiny square) in a digital image, each with a colour value stored in binary.
The total number of pixels in an image, calculated as width (px) x height (px). Higher resolution = more pixels = more detail.
The number of bits used to represent the colour of EACH pixel. More bits = more possible colours.
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