Linear structured light pavement surface detection system-based pavement depth image production method

A line-structured light and road surface detection technology, which is applied in image analysis, image data processing, roads, etc., can solve the problems of large size variation range and difficult grayscale variation, and achieve reliable results, better detection effect and fast response Effect

Inactive Publication Date: 2015-12-09
NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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Problems solved by technology

However, the undulating features caused by the different roughness and flatness of the road surface in the actual road surface outline will have a large range of size fluctuations, and it is diff...

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  • Linear structured light pavement surface detection system-based pavement depth image production method
  • Linear structured light pavement surface detection system-based pavement depth image production method
  • Linear structured light pavement surface detection system-based pavement depth image production method

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Embodiment Construction

[0031] Below in conjunction with accompanying drawing of description, the present invention will be further described.

[0032] Such as Figure 1 to Figure 4 As shown, the present invention provides a road surface depth image production method based on a line structured light road surface detection system. The light strip image containing the three-dimensional information of the road surface to be tested is collected by the vehicle-mounted line structured light road surface detection system, and extracted from the light strip image. out as figure 1 The cross-section contour line shown in Fig. 2 is spliced ​​and transformed into Figure 4 The three-dimensional depth image of the road surface shown in the figure realizes the detection of road surface defects without being disturbed by vehicle fluctuations.

[0033] Among them, the splicing and conversion of the section contour lines into a three-dimensional depth image of the road surface includes the following steps:

[0034...

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Abstract

The present invention discloses a linear structured light pavement surface detection system-based pavement depth image production method, a light strip image containing three-dimensional information of a to-be-tested pavement is collected by a vehicle-mounted linear structured light pavement surface detection system, section surface contour lines are extracted from the light strip image, the section surface contour lines are spliced and converted into a pavement surface three-dimensional depth image by selection linear fitting and difference calculation method so as to realize pavement distress detecting free of vehicle wave disturbance. Beneficial effects are that: compared with surface fitting method in the prior art, disturbance caused by a variety of pavement fluctuations and detection system vertical vibration in the actual road detection process can be effectively overcome, so that the obtained pavement depth image is relatively flat, and is free of gray transition, detect effect is better, response is rapid, processing is efficient, and the result is reliable.

Description

technical field [0001] The invention relates to an image production method, in particular to a pavement depth image production method based on a line-structured light pavement detection system, and belongs to the technical field of computer vision-based pavement defect detection. Background technique [0002] At present, there are few research results on pavement disease detection based on structured light 3D reconstruction technology, and the practicability is not strong. The mainstream idea of ​​using structured light 3D detection technology is to directly analyze the road surface contour line obtained by the structured light detection system to extract the disease characteristic information in the contour line. However, this method is suitable for areas with obvious disease characteristics and significant differences between road surface and disease. It is difficult to have a good detection effect for complex road conditions in practice and some disease information with i...

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Application Information

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IPC IPC(8): E01C23/01G06T7/00
Inventor 徐贵力朱春省李开宇贾银亮王彪宋葵阳
Owner NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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