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A point cloud data registration method based on road marking lines

A technology of point cloud data and road signs, applied in image data processing, image analysis, image enhancement, etc., can solve problems such as not having conventional target balls

Active Publication Date: 2021-07-06
SHANGHAI GEOTECHN INVESTIGATIONS & DESIGN INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the existing 3D laser scanning needs to set up targets on the spot for registration between multi-station scanning data, but it does not have the conditions to set up conventional target balls on expressways

Method used

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  • A point cloud data registration method based on road marking lines
  • A point cloud data registration method based on road marking lines
  • A point cloud data registration method based on road marking lines

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Experimental program
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Embodiment

[0033] Embodiment: This embodiment specifically relates to a point cloud data registration method based on road marking lines, through laser scanning image recognition and point cloud data calculation, settlement monitoring on expressways is realized.

[0034] In this example, according to figure 1 As shown, the above-mentioned point cloud data registration method based on road marking lines includes the following steps: Step 1, using a laser scanner to collect point cloud data of road marking lines along the road extension direction; Step 2, according to the intensity in the point cloud data Generate road surface gray-scale images from the information; step 3, extract the coordinate data of the lane line 1 of the road marking line in each road surface gray-scale image; step 4, according to the coordinates of the same lane line 1 in different road surface gray-scale images The data is subjected to multi-site 2 plane registration, multi-site 2 elevation registration, multi-phas...

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Abstract

The invention discloses a point cloud data registration method based on road marking lines. A laser scanner is used to collect point cloud data of road marking lines along the road extension direction, and a road surface grayscale image is generated according to the intensity information in the point cloud data. Extract the coordinate data of the lane-dividing line of the road marking line in each gray-scale image of the road surface, and perform multi-site plane registration, multi-site elevation registration, and multi-site Period plane registration, multi-phase elevation registration. The invention has the advantages of being able to realize settlement monitoring on expressways, improving the registration accuracy of point cloud data, being able to operate on a measuring vehicle and avoiding laying target balls on the road surface, and improving the safety of measurement.

Description

technical field [0001] The invention belongs to the technical field of engineering surveying, in particular to a point cloud data registration method based on road marking lines. Background technique [0002] The approach road at the bridge end of the expressway is prone to uneven settlement during use, especially when vehicles pass by at high speed, there will be a phenomenon of jumping, which seriously affects driving safety. It is necessary to regularly monitor the settlement at the approach road at the bridge end of the highway. The settlement monitoring of the existing approach road at the bridge head is realized by precise leveling. The leveling method has high precision, but the operator needs to set up the station and support the ruler in the emergency lane, and the risk factor is high. Three-dimensional laser scanning technology can realize non-contact measurement, has the advantages of fast measurement speed and high measurement accuracy, and is suitable for settle...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06T7/30
CPCG06T2207/10028G06T2207/30256G06T7/30
Inventor 王令文周理含宫玮清王少川陈建华
Owner SHANGHAI GEOTECHN INVESTIGATIONS & DESIGN INST
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