A Comparison Study of Edge Line Estimation Algorithms for Dimensional Quality Assessment of Precast Concrete Slabs

Author:

Yi Chang-Yong1ORCID,Li Fangxin23ORCID,Thedja Julian Pratama Putra34,Sim Sung-Han3ORCID,Choi Yoon-Ki5,Kim Geon Hwee6ORCID,Kim Min-Koo7ORCID

Affiliation:

1. Intelligent Construction Automation Center, Kyungpook National University, 80 Daehak-ro, Buk-gu, Daegu 41566, Republic of Korea

2. Business School, Hohai University, Nanjing, China

3. School of Civil, Architectural Engineering and Landscape Architecture, Sungkyunkwan University, Suwon 16419, Republic of Korea

4. PT Miyamoto International Indonesia, Jakarta, Indonesia

5. Earth Turbine, 36, Dongdeok-ro 40-gil, Jung-gu, Daegu 41905, Republic of Korea

6. School of Mechanical Engineering, Chungbuk National University, Cheongju, Chungbuk 28644, Republic of Korea

7. Department of Architectural Engineering, Chungbuk National University, Cheongju, Chungbuk 28644, Republic of Korea

Abstract

Point cloud data-based edge line extraction is an important task for accurate geometrical inspection of precast concrete (PC) elements in the construction industry. Although a few edge extraction algorithms have been developed so far based on point cloud data, little attention has been paid on which edge extraction algorithm performs the best in terms of edge estimation accuracy. To tackle the research gap, this study aims to evaluate currently available edge extraction algorithms in order to determine optimal algorithm for precise geometrical inspection of PC elements. To do this, simulated scan points are first generated and used for algorithm performance analysis using a geometrical model and a measurement noise modeling that determine the coordinates of simulated scan points. For validation of the simulation approach, comparison tests with experimental data are performed and the results show that the simulation approach has a high similarity of more than 90% compared to experimental data in terms of the number of scan points, scan pattern, and scan density, proving the effectiveness of the simulation-based evaluation method. In addition, it shows that a least square regression (LSR) algorithm provides the best performance with an edge extraction accuracy of 1.56 and 2.71 mm for simulated and experimental scan points, respectively. The contributions of this study are (1) development of the geometrical model and noise modeling based on actual scan data and (2) validation of simulated-based evaluation method on the lab-scale PC slabs.

Funder

Korea Institute of Construction Technology

Publisher

Hindawi Limited

Subject

Civil and Structural Engineering

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