The Bilateral Filter for Point Clouds

Abstract : Point sets obtained by 3D scanners are often corrupted with noise, that can have several causes, such as a tangential acquisition direction, changing environmental lights or a reflective object material. It is thus crucial to design efficient tools to remove noise from the acquired data without removing important information such as sharp edges or shape details. To do so, Fleish-man et al. introduced a bilateral filter for meshes adapted from the bilateral filter for gray level images. This anisotropic filter denoises a point with respect to its neighbors by considering not only the distance from the neighbors to the point but also the distance along a normal direction. This simple fact allows for a much better preservation of sharp edges. In this paper, we analyze a parallel implementation of the bilateral filter adapted for point clouds. Source Code The ANSI C++ source code permitting to reproduce results from the on-line demo is available on the web page of the article 1 .
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Julie Digne, Carlo De Franchis. The Bilateral Filter for Point Clouds. Image Processing On Line, IPOL - Image Processing on Line, 2017, 7, pp.278 - 287. 〈10.5201/ipol.2017.179〉. 〈hal-01636966〉

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