A method for image extraction of pantograph slide plate of urban rail train in complex environment
A pantograph skateboard and urban rail train technology, applied in the field of traffic safety engineering, can solve the problems of complex system mechanism, low reliability, and low efficiency of system online detection, and achieve high robustness, high accuracy, and solution Effects of non-correlated edge disturbances and edge breaks
Active Publication Date: 2022-02-18
南京航轩轨道交通科技有限公司
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Among these methods, some systems have complex mechanisms and low reliability; some systems have low online detection efficiency and are greatly affected by complex environments.
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Embodiment 1
[0069] to combine Figure 1-8 In this embodiment, the images collected by the industrial cameras of the Guangzhou Metro are used for processing and analysis. Such as figure 1 shown, including the following steps:
[0070] Step 1. Determine the rectangular area of the skateboard in the original image: the image is acquired by the camera, and the image is initially intercepted according to the position of the pantograph skateboard in the image to obtain an image including the pantograph skateboard. Smooth the image containing the pantograph skateboard obtained after rough interception, and then obtain the gray level and y of each line according to the horizontal projection method, and draw a curve; First-order derivation, and get the curve about the first-order derivative, and finally analyze the two curve images, according to the gray-scale sum in the picture and the curve jump characteristics of the gray-scale and first-order derivative, and finally locate the skateboard c...
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The invention discloses an image extraction algorithm of a pantograph slide plate of an urban rail train in a complex environment. The method is as follows: firstly, the industrial camera takes photos to obtain the original image; secondly, the original image is preliminarily intercepted to determine the rough rectangular area of the skateboard in the original image; then, the projection method is used to determine the upper and lower boundaries of the precise rectangular area where the skateboard is located; further, Then use the edge detection algorithm to extract the edge of the image, use the Hough transform to detect the edge image, and then determine the left and right boundaries of the precise rectangular area where the skateboard is located; finally calculate the thickness of the skateboard according to the precise rectangular area where the skateboard is located. The invention can extract the edge of the pantograph sliding plate in complex environment, and the extraction algorithm has the advantage of high robustness in complex environment.
Description
technical field [0001] The invention belongs to the technical field of traffic safety engineering, in particular to an image extraction method of a pantograph slide plate of an urban rail train in a complex environment. Background technique [0002] With the rapid development of my country's urban rail transit and the opening and operation of multiple lines, the safety problems of train online operation are becoming more and more significant. The urban rail train pantograph is a device for urban rail trains to receive current from the catenary line. Its sliding plate is in direct contact with the catenary wire, and the current is drawn from the catenary wire for use by the urban rail train. The quality of pantograph slides directly affects the safe operation of urban rail trains. If the thickness of pantograph slides is too small, it will not only affect the normal power supply of urban rail trains, but the resulting arc discharge will further aggravate the damage of pantogr...
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IPC IPC(8): G06T7/00G06T7/60G06T7/12G06T7/13G06T7/168G06T7/155G06T7/181G06T5/00
CPCG06T7/0004G06T7/12G06T7/13G06T7/155G06T7/168G06T7/181G06T7/60G06T2207/20061G06T5/70
Inventor 邢宗义包建东
Owner 南京航轩轨道交通科技有限公司