An Algorithm of Anisotropy and Self-adaptive Point Cloud Denoising

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Provided by: Binary Information Press
Topic: Cloud
Format: PDF
Since the method of isotropic filtering will result in blurring sharp features, a new approach of anisotropic filtering algorithm is proposed, direction and scale of such filter vary according to changes of sharp features' direction and scale. According to the local neighborhood of the point to be processed, the direction and scale of the filter were adaptively computed by covariance analysis. And because the results of covariance analysis are determined by the selection of neighborhood points, in order to adaptively select neighborhood points, a method about the selection of optimal neighborhood radius was also proposed which is based on projection direction.
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