Foreign matter detection method and device applied to ballast bed in railway tunnel

• Main Authors: LIU YIRAN, HU HAO, GUAN ZEBIN, LIU SHUOYAN, XIE JIAXU, XU CHENGWEI, FANG KAI, WANG MINGZHE, XUE HAO, LI CHAO, WANG RUI, ZHANG YUSHAN, LI XUN, LIU YUXIN, YANG GUOYUAN, YANG ENZE, JIN JIUQIANG
• Format: Patent
• Language: Chinese; English
• Published: 19.03.2021
• Subjects: CALCULATING; COMPUTING; COUNTING; HANDLING RECORD CARRIERS; PHYSICS; PRESENTATION OF DATA; RECOGNITION OF DATA; RECORD CARRIERS

The invention provides a foreign matter detection method and device applied to a ballast bed in a railway tunnel. The method comprises the following steps: acquiring a video frame image acquired by apreset image acquisition device in the railway tunnel, and determining a to-be-detected area in the video frame image; performing background modeling on the video frame image, and determining a background and a foreground target based on pixel distribution in the to-be-detected area; judging whether the attribute of the foreground target meets a preset attribute threshold value or not, and judgingwhether the residence time of the foreground target exceeds a preset time threshold value or not; and if yes, determining the position corresponding to the foreground target, and outputting alarm indication information. By adopting the foreign matter detection method applied to the ballast bed in the railway tunnel, the environment in the ballast bed in the railway tunnel is monitored in real time, the detection efficienc