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- W1940445245 abstract "A novel algorithm is proposed for extracting sharp features automatically from scanned 3D data of man-made CAD-like objects. The input of our method consists of a mesh or an unstructured point cloud that is captured on the object surface. First, the vector between a given point and the centroid of its neighborhood at a given scale is projected on the normal vector and called the ‘projected distance’ at this point. This projected distance is calculated for every data point. In a second stage, Otsu's method is applied to the histogram of the projected distances in order to select the optimal threshold value, which is used to detect potential sharp features at a single scale. These two stages are applied iteratively with the other incremental scales. Finally, points recorded as potential features at every scale are marked as valid sharp features. The method has many advantages over existing methods such as intrinsic simplicity, automatic selection of threshold value, accurate and robust detection of sharp features on various objects. To demonstrate the robustness of the method, it is applied on both synthetic and real 3D data of point clouds and meshes with different noise levels." @default.
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- W1940445245 date "2014-01-01" @default.
- W1940445245 modified "2023-09-27" @default.
- W1940445245 title "Automatic Method for Sharp Feature Extraction from 3D Data of Man-made Objects" @default.
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- W1940445245 doi "https://doi.org/10.5220/0004674801120119" @default.
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