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Webster 1913 Edition


Homography

Ho-mog′ra-phy

,
Noun.
1.
That method of spelling in which every sound is represented by a single character, which indicates that sound and no other.
2.
(Geom.)
A relation between two figures, such that to any point of the one corresponds one and but one point in the other, and vise versa. Thus, a tangent line rolling on a circle cuts two fixed tangents of the circle in two sets of points that are homographic.

Definition 2024


homography

homography

English

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 invertible transformation from a projective space to itself 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.

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