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Title |
Image Retrieval Based on P2-Invariant |
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Author |
Ruihang Wu Author, Shaozi Lir Author, Fengmei Zou Author |
| Citation |
Vol. 6 No. 8 pp. 79-84 |
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Abstract |
The geometrical description of an object can be separated into two parts: a) the registration information and b) the ‘shape’ (which is invariant under registration transformation). A common choice of registration is the group of Euclidean similarity transformations, and then the geometrical properties that are invariant under this group of transformations are known as ‘similarity shape’. In this paper the class of projective/permutation -invariant based image retrieval algorithm is given. Computation of the invariants of points set in 2D projective space is given. The correspondence between two images is established making use of the p2 ?invariant representation of five-tuple of features |
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Keywords |
P2-invariant, cross ratio, feature correspondence, projective geometry. |
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