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Catalogue of Artificial Intelligence Techniques

Catalogue of Artificial Intelligence Techniques

   

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Curvature Maps

Keywords: Gaussian curvature, mean curvature, principal curvature, umbilic point

Categories: Vision


Author(s): R.M. Cameron-Jones

The representation of the curvatures of an image considered as a surface--usually applied to depth maps. The normal curvature of a surface at a point reaches its maximum and minimum, the principal curvatures, at directions in the surface which are perpendicular. At an umbilic point, e.g., on a plane or sphere, the normal curvature is independent of direction. The Gaussian curvature (frequently denoted ), the product of the principal curvatures, and the mean curvature (frequently denoted ), the mean of the principal curvatures, may be used to classify the surface type into perceptually significant categories according to their sign.


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