Scanning ray truncation method for removing the noise point cloud inside buildings

doi:10.13474/j.cnki.11-2246.2021.0268

Bulletin of Surveying and Mapping ›› 2021, Vol. 0 ›› Issue (9): 28-31.doi: 10.13474/j.cnki.11-2246.2021.0268

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Scanning ray truncation method for removing the noise point cloud inside buildings

WANG Guo^1,2, LI Feng³, CHEN Chao¹, CAI Qingkong¹, YANG Yalun²

1. Institute of Civil Engineering, Henan University of Engineering, Zhengzhou 451191, China;
2. Surveying and Land Information Engineering College, Henan Polytechnic University, Jiaozuo 454000, China;
3. Department of Disaster Prevention Engineering, Institute of Disaster Prevention, Sanhe 065201, China

Received:2020-09-10 Online:2021-09-25 Published:2021-10-11

Abstract

Abstract: Due to different styles of furniture and occlusion, the distribution of noise point cloud inside buildings is more complex and adhesion with building facade, which make it difficult to be removed by interactive way. In order to solve this problem, a scanning ray truncation method is proposed in this paper. Firstly, the building surface is segmented, and then the intersection between the scanning ray composed of the scanning center point and the point cloud and the building facade is obtained. By comparing the length of the scanning ray with the distance between the scanning center point and the intersection point, the scanning ray can be cut off by the building facade, so as to remove the interior noise point cloud automatically while maintaining the original sampling interval. The experimental results show that the proposed method can effectively remove the interior noise points.

Key words: ground laser scanning, interior of building, building façade, scanning ray truncation, noise point cloud

CLC Number:

WANG Guo, LI Feng, CHEN Chao, CAI Qingkong, YANG Yalun. Scanning ray truncation method for removing the noise point cloud inside buildings[J]. Bulletin of Surveying and Mapping, 2021, 0(9): 28-31.

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Scanning ray truncation method for removing the noise point cloud inside buildings

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