| 释义 |
homography|həʊˈmɒgrəfɪ|
[f. homo- + Gr. -γραϕια writing, -graphy.]
1. Geom. The relation between homographic figures; = homology 4.
1859Cayley Sixth Mem. Quantics in Phil. Trans. CXLIX. 77 The theory of homography in geometry of two dimensions may be made to depend upon..the homography of ranges or pencils. 1959E. M. Patterson Topology (ed. 2) ii. 21 Congruence and similarity in Euclidean geometry and homography in projective geometry are all equivalence relations. 1965H. Eves Surv. Geom. II. xii. 203 A transformation of the form ź = (az + b)/(cz + d), ad —bc ≠ 0, is called a homography (or bilinear substitution).
2. Gram. ‘That method of spelling in which every sound is expressed by a single character, which represents that sound and no other’ (Webster 1864). |