Pavement Crack Extraction Method from Mobile Laser Scanning Point Cloud

The automatic detection of cracks in the road surface is great significance for maintaining to ensure safety moving vehicles. Hokuyo UTM 30 LX 2D laser scanner this study used observe containing two and distress areas. As a result, dense point clouds are created. automatically extracted from based on geometry curb lines. normal vector points calculated principal component analysis method. Points belonging zones intensity gradient inclination angle between vectors neighboring then converted binary images. crack edges Sobel operator. Although salt-and-pepper spots due extraction using affect definition edges, especially small cracks, large areas clearly. Research results show that reflectance elevation variation combination lead efficiency area.