Road marking automatic detection and classification method based on mobile laser scanning point cloud
A road marking and laser scanning technology, applied in character and pattern recognition, instruments, computer parts, etc., to improve quality, accurately detect and classify, and avoid training sample collection
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[0059] See figure 1 The invention discloses a road marking automatic detection and classification method based on a mobile laser scanning point cloud, which includes the following steps:
[0060] S1, pavement point cloud data segmentation
[0061] Road markings only exist on the road surface, and the original point cloud contains a large number of non-road points. In order to reduce the amount of subsequent processing data, the road point cloud is segmented first. This step is implemented through the following steps:
[0062] S11. Divide the original point cloud data into voxels with a side length of 5 cm, and then perform upward region growth until the upper boundary of the point cloud, thereby clustering the original point cloud into several tree structures. The so-called upward region growth means that during the growth process, each voxel can only grow to the nine adjacent voxels above it.
[0063] S12. Judge each tree structure separately. If the height differe...
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