Pixel - The smallest element in an image., Short for Picture Element - Pixel, Images stored as - Binary, 2 bits - = 4 colours, A 20 x 20 image has - 400 pixels, True Colour - RGB, Colour Depth / Bit Depth - The number of colours that can be used, Resolution - Height x Width of Pixels, Metadata - Added to an image file to allow the file to be saved and reproduced accurately., Improves Quality - Higher Resolution and Higher Bit Depth, Formula for an Image File - Height x Width X Colour Depth,

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