AUTOMATIC EXTRACTION OF ROAD MARKINGS FROM MOBILE LASER-POINT CLOUD USING INTENSITY DATA

International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences

Yao, L.^1¹ 

[1] College of Survey and Geo-Informatics Tongji University, Shanghai 200092, China^1

关键词: Laser Scanning;    Road Marking;    Point Cloud;    High Precision Map;    Adaptive Threshold Segmentation;   

DOI  :  10.5194/isprs-archives-XLII-3-2113-2018

学科分类：地球科学(综合)

来源: Copernicus Publications

【 摘 要 】

With the development of intelligent transportation, road’s high precision information data has been widely applied in many fields. This paper proposes a concise and practical way to extract road marking information from point cloud data collected by mobile mapping system (MMS). The method contains three steps. Firstly, road surface is segmented through edge detection from scan lines. Then the intensity image is generated by inverse distance weighted (IDW) interpolation and the road marking is extracted by using adaptive threshold segmentation based on integral image without intensity calibration. Moreover, the noise is reduced by removing a small number of plaque pixels from binary image. Finally, point cloud mapped from binary image is clustered into marking objects according to Euclidean distance, and using a series of algorithms including template matching and feature attribute filtering for the classification of linear markings, arrow markings and guidelines. Through processing the point cloud data collected by RIEGL VUX-1 in case area, the results show that the F-score of marking extraction is 0.83, and the average classification rate is 0.9.

【 授权许可】

CC BY