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Erschienen in: Autonomous Robots 7/2017

30.12.2016

B-SHOT: a binary 3D feature descriptor for fast Keypoint matching on 3D point clouds

verfasst von: Sai Manoj Prakhya, Bingbing Liu, Weisi Lin, Vinit Jakhetiya, Sharath Chandra Guntuku

Erschienen in: Autonomous Robots | Ausgabe 7/2017

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Abstract

We present the first attempt in creating a binary 3D feature descriptor for fast and efficient keypoint matching on 3D point clouds. Specifically, we propose a binarization technique and apply it on the state-of-the-art 3D feature descriptor, SHOT (Salti et al., Comput Vision Image Underst 125:251–264, 2014) to create the first binary 3D feature descriptor, which we call B-SHOT. B-SHOT requires 32 times lesser memory for its representation while being six times faster in feature descriptor matching, when compared to the SHOT feature descriptor. Next, we propose a robust evaluation metric, specifically for 3D feature descriptors. A comprehensive evaluation on standard benchmarks reveals that B-SHOT offers comparable keypoint matching performance to that of the state-of-the-art real valued 3D feature descriptors, albeit at dramatically lower computational and memory costs.

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Fußnoten
1
Tombari et al. (2013) presented a comprehensive survey and performance evaluation of various 3D keypoint detectors.
 
2
We employ the default implementation of SHOT feature descriptor available through Point Cloud Library at www.​pointclouds.​org.
 
4
The way we added the extra information about the relative largeness and the experimental results are available at http://​tinyurl.​com/​eb-shot.
 
6
State-of-the-art 3D keypoint detectors achieve at most 0.5 relative repeatability (Tombari et al. 2013), i.e., only half of the detected keypoints between a scene and a model lie exactly at the same positions.
 
7
This can also be seen from Fig. 9 of Salti et al. (2014).
 
9
We employ pcl::registration::CorrespondenceEstimation class from Point Cloud Library (www.​pointclouds.​org) to estimate reciprocal correspondences, which inherently uses a kdtree for faster matching and retrieval.
 
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Metadaten
Titel
B-SHOT: a binary 3D feature descriptor for fast Keypoint matching on 3D point clouds
verfasst von
Sai Manoj Prakhya
Bingbing Liu
Weisi Lin
Vinit Jakhetiya
Sharath Chandra Guntuku
Publikationsdatum
30.12.2016
Verlag
Springer US
Erschienen in
Autonomous Robots / Ausgabe 7/2017
Print ISSN: 0929-5593
Elektronische ISSN: 1573-7527
DOI
https://doi.org/10.1007/s10514-016-9612-y

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