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GCSE Computer Science · key term
The number of bits used to represent the colour of each pixel in an image.
Used by OCR
Paper 1
Revise: Calculating Data CapacityDoubling both height and width creates four times as many pixels, so it quadruples the calculated size if colour depth stays unchanged.
The number of bits used to represent the colour of each pixel. A depth of bits allows up to different colours.
Link each change to its cause: higher resolution means more pixels to store; higher colour depth means more bits to store for every pixel.
Distinguish colour depth, measured in bits per pixel, from the number of available colours.
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