Study on Flatness Error Evaluation Method of Discontinuous Plane
LOU Jian-qi1, LI Wei1, FU Yan-hua2, LIN Hong-yun3
1. School of Civil Engineering, University of Science and Technology, Anshan, Liaoning 114051, China
2. School of Resources and Civil Engineering, Northeastern University, Shenyang, Liaoning 110819, China
3. Beijing Digsur Science and Technology Co.Ltd., Beijing 100012
Abstract：A method for evaluating discontinuous planes based on inclusive lines is proposed. Firstly, the global noise of point cloud data is eliminated based on principal component analysis. Then, the least square plane fitting method, the multi-threshold point cloud extraction algorithm and the parallel line fitting method were used to obtain the qualified inclusive lines, and two parallel inclusive lines in the space were used to replace the inclusive plane to establish the minimum region. Finally, the flatness error evaluation of discontinuous plane is realized and the plane adjustment is guided. The experimental results show that the flatness error of the proposed method is 0.011mm lower than that of the genetic algorithm compared with the traditional feature point method, and the flatness error is reduced by 1.959mm after adjusting the plane according to the output deviation information. It can effectively evaluate the flatness error of discontinuous plane and guide the plane adjustment.
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2022, Vol. 43 
