Railway vehicle body detection method

Abstract

The invention, which relates to the technical field of rail detection, discloses a railway vehicle body detection method comprising the following steps: obtaining railway vehicle body image information in advance and carrying out processing to obtain an image graying histogram; obtaining a global threshold value based on the obtained image graying histogram, and calibrating the threshold value by using an Otsu threshold value method; obtaining a vehicle edge contour through a Canny operator; splicing and fusing image contours based on an ICP algorithm; and performing matching analysis based on the obtained image contour splicing fusion and the template image, and taking the result as railway vehicle body detection information. The method achieves the quick, reliable and automatic detection, is higher in measurement precision, is high in automation degree, prevents a faulty train from leaving a factory, can replace or greatly reduce the manual inspection intensity, reduces the detection cost, is high in adaptability, and is wide in application range.

Description

technical field [0001] The invention relates to the technical field of track detection, in particular to a method for detecting a rail vehicle body. Background technique [0002] As my country's rail transit technology innovation is entering a new era, with the continuous maturity of machine vision technology and the continuous improvement of measurement accuracy, more and more automated and semi-automatic testing equipment are put into use for rail vehicle testing; for vehicles from R&D design to quality control Stage automation and intelligent improvement provide a strong guarantee. At the same time, it also reduces the intensity of manual inspection, and further explores to completely replace manual inspection, so as to reduce the labor intensity of technicians and reduce the detection cost. [0003] At present, a better automatic detection method on the market uses RGV trolley / unpowered trolley / AGV trolley combined with 2D high-speed camera to initially automatically ide...

AI Technical Summary

Problems solved by technology

The above-mentioned technical solution can be applied to the detection of rail vehicles in the same way, and combined with 2D and 3D cameras to enhance the information contained in the image, which is equivalent to improving the detection accuracy, but it uses a fixed detection unit, which has the same detection position as the aforementioned technical solution. In some cases, the relative distance between the image acquisition unit and the detection point, the angle cannot be adjusted, etc., cannot completely replace the manual inspection

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