Unary coding: Difference between revisions

Revision as of 11:38, 23 December 2009

Revision as of 04:15, 3 November 2011

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'''Unary coding''', sometimes called '''Thermometer code''', is an [[entropy encoding]] that represents a [[natural number]], ''n'', with ''n'' ones followed by a zero (if ''natural number'' is understood as ''non-negative integer'') or with ''n'' − 1 ones followed by a zero (if ''natural number'' is understood as ''strictly positive integer''). For example 5 is represented as 111110 or 11110. Some representations use ''n'' or ''n'' − 1 zeros followed by a one. The ones and zeros are interchangeable without loss of generality.

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