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キーワード:
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要旨:
We propose a simple and effective method for detecting view-
and scale-independent ridge-valley lines defined via first-
and second-order curvature derivatives on shapes approximated
by dense triangle meshes. A high-quality estimation of
high-order surface derivatives is achieved by combining
multi-level implicit surface fitting and finite difference
approximations. We demonstrate that the ridges and valleys are
geometrically and perceptually salient surface features and,
therefore, can be potentially used for shape recognition,
coding, and quality evaluation purposes.
