Figure - PMC

Skip to main content

An official website of the United States government

Here's how you know

Here's how you know

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Secure .gov websites use HTTPS
A lock ( ) or https:// means you've safely connected to the .gov website. Share sensitive information only on official, secure websites.

View full-text article in PMC

. 2021 May 26;21(11):3703. doi: 10.3390/s21113703

Search in PMC
Search in PubMed
View in NLM Catalog
Add to search

© 2021 by the authors.

Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).

PMC Copyright notice

The results of several filtering processes, where the main noise is marked within the red shape: (a) the initial data collected; (b) the data processed by artificial filtering on the initial data; (c) the data processed by the statistical outlier removal (SOR) filter; (d) the data processed by the SOR filter on the basis of voxel grid filter processing (the voxel grid statistical outlier removal (VGSOR) filter); (e) the data processed by the radius outlier removal (ROR) filter; (f) the data processed by the Gaussian filter; (g) the data processed by the difference of normals (DON) method; and (h) the data processed by the GPCA method.

The results of several filtering processes, where the main noise is marked within the red shape: (a) the initial data collected; (b) the data processed by artificial filtering on the initial data; (c) the data processed by the statistical outlier removal (SOR) filter; (d) the data processed by the SOR filter on the basis of voxel grid filter processing (the voxel grid statistical outlier removal (VGSOR) filter); (e) the data processed by the radius outlier removal (ROR) filter; (f) the data processed by the Gaussian filter; (g) the data processed by the difference of normals (DON) method; and (h) the data processed by the GPCA method.