homography

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English

English Wikipedia has an article on:
Wikipedia
English Wikipedia has an article on:
Wikipedia

Etymology

homo- +‎ -graphy

Pronunciation

  • Lua error in Module:parameters at line 331: Parameter 1 should be a valid language or etymology language code; the value "RP" is not valid. See WT:LOL and WT:LOL/E. enPR: hōmŏʹgrəfĭ, IPA(key): /həʊˈmɒɡɹəfɪ/
  • Lua error in Module:parameters at line 331: Parameter 1 should be a valid language or etymology language code; the value "US" is not valid. See WT:LOL and WT:LOL/E. IPA(key): /hoʊˈmɒɡɹəfi/

Noun

homography (countable and uncountable, plural homographies)

  1. The state or quality of being spelt homographically; the state or quality of existing as homographs.
  2. (geometry) An isomorphism between projective spaces that maps straight lines to straight lines.
    A homography on a real projective plane can be specified by a mapping from one set of four non-collinear points to another set of four non-collinear points. Given such a specification, then the 3-by-3 homography matrix may be computed by means of the DLT (Direct Linear Transformation) algorithm.
    Synonyms: projectivity, projective transformation, projective collineation
    Hypernym: collineation
    Hyponyms: linear fractional transformation, Möbius transformation
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