Title
Automatic Extraction of Indoor Structural Information from Point Clouds
Abstract
We propose an innovative method with which to extract building interior structure information automatically, including ceiling, floor, and wall. Our approach outperforms previous methods in the following respects. First, we propose an approach based on principal component analysis (PCA) to find the ground plane, which is regarded as the new Cartesian plane. Second, to reduce the complexity of data processing, the data are projected into two dimensions and transformed into a binary image via the operation of an improved radius outlier removal (ROR) filter. Third, a traditional thinning algorithm is adopted to extract the image skeleton. Then, we propose a method for calculating slope through the nearest neighbor point. Moreover, the line is represented with the slopes to obtain information pertaining to the interior planes. Finally, the outline of the line is restored to a three-dimensional structure. The proposed method is evaluated in multiple scenarios, and the results show that the method is accurate (the maximum error of 0.03 m was in three scenarios) in indoor environments.
Year
DOI
Venue
2021
10.3390/rs13234930
REMOTE SENSING
Keywords
DocType
Volume
interior structure, reconstruction, PCA, projection, ROR, thinning, nearest neighbor, slopes
Journal
13
Issue
Citations 
PageRank 
23
0
0.34
References 
Authors
0
5
Name
Order
Citations
PageRank
Dongyang Cheng111.04
Junchao Zhang213.41
Dangjun Zhao311.04
Jianlai Chen402.37
Di Tian510.70