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Representation of data: Images


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Bit map
An image file format where the picture is represented asset of dots or pixels.
Metadata
Data about data.
Pixel
’Picture cell’ – a dot that makes up a part of an image. Resolution The number of dots per unit length. It affects the clarity
Resolution
The number of dots per unit length. It affects the clarity of the image.
Vector graphics
Graphics stored as formulae.
Lossless compression
A way of compressing a file without losing data.
Lossy compression
A way of compressing a file by removing data.