基于图像处理的轨旁组合信号灯识别方法

doi:10.16180/j.cnki.issn1007-7820.2023.07.002

Abstract

Abstract:

The trackside signal light is an important guidance for a running train in a rail transportation system. However, the combined trackside signal light included two colors is also used as a specific sign in addition to the usual single color signal light. In order to solve the recognition problem of the combined trackside signal light, a method based on image processing technology is employed to recognize the combined trackside signal light located within 150 m in front of train. As a result, the candidate region characteristics of the combined trackside signal light are extracted by color segmentation, morphological processing, and Hough transform. On the other hand, the combined trackside signal light can be positioned on the right of running rail train. The central spacing between two single lights can determine whether or not existing combined trackside signal light to remove the possible interferences from other lights or environment. The experimental results indicate that this method can accurately locate and recognize the combined trackside signal light, and the color correction ratio is 94.14% for green and yellow light, 96.21% for two green lights, 86.67% for two yellow lights.

Key words: combined trackside signal light, image processing, color segmentation, morphological operation, Hough transform, edge detection, track extraction, image recognition

CLC Number:

TN99

GUO Qicheng,SHEN Tuo,ZHANG Xuanxiong. Recognition Method of the Combined Trackside Signal Light Based on Image Processing[J].Electronic Science and Technology, 2023, 36(7): 8-15.

Figures/Tables 11

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References 21

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	R	G	B
Red	[210, 255]	[0, 90]	[0, 100]
Green	[0, 60]	[200, 255]	[100, 180]
Yellow	[200, 255]	[200, 255]	[50, 120]

	R	G	B
Red	[0, 30]∪[300, 360]	[0, 70]	[0, 90]
Green	[150, 180]	[0, 70]	[0, 90]
Yellow	[80, 140]	[0, 70]	[0, 90]

	样本总数	正确识别总数	错误识别总数	识别正确率/%
一红	30	28	2	93.34
一绿	35	32	3	91.42
一黄	25	22	3	88.12
绿黄	35	33	2	94.28
两绿	35	34	1	96.21
两黄	30	26	4	86.67

Recognition Method of the Combined Trackside Signal Light Based on Image Processing

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