Digital imaging

Developed in the 1970s, digital imaging is the conversion of images into binary language to be stored on a computer's memory. Images can be captured by scanning or by a digital camera - video images can also be digitized. In digital cameras film is replaced by a small chip (CCD) which reacts to light like film, but instead of storing an image chemically, converts it into digital form. The data that makes up this image can be viewed on a computer screen as a pattern of tiny squares called pixels. Through the use of various kinds of software it can be stored, transferred into a multimedia programme, manipulated, enhanced, or simply printed out.

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Alan Sugar
by Harry Borden
15 March 2001
NPG x127003

Tricky
by Sal Idriss
26 July 2003
NPG x126229

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