Anomaly detection of EMU trains based on line-scan image registration

Lei Fang; Zelin Shi; Chuanmin Xiao; Yunpeng Liu; Mingqi Pang; Enbo Zhao

doi:10.1117/12.3032281

10 October 2024 Anomaly detection of EMU trains based on line-scan image registration

Lei Fang, Zelin Shi, Chuanmin Xiao, Yunpeng Liu, Mingqi Pang, Enbo Zhao

Proceedings Volume 13278, Seventh Global Intelligent Industry Conference (GIIC 2024); 132780K (2024) https://doi.org/10.1117/12.3032281
Event: Seventh Global Intelligent Industry Conference (GIIC 2024), 2024, Shenzhen, China

Abstract

Anomaly detection based on template image registration is one of the methods used to detect anomalies of objects with similar structures. However, the imaging device of the Electronic Multiple Units (EMU) train is a line-scan camera, and the geometric transformation law between its image and the area-scan image is different. The conventional image registration method of the area-scan image cannot accurately align the line-scan image. Moreover, the line-scan image of the EMU train collected in uncontrollable environmental scenes exhibits significant grayscale changes, and the registered images cannot detect differences by directly comparing grayscale. To address these two challenges, this paper proposes a two-stage anomaly detection method based on line-scan image registration and edge comparison. In the registration stage, a coarse-to-fine line-scan image registration method was designed. First, the feature-based registration method was used to achieve coarse position of the EMU train template image in the target image. Then, the direct registration method based on the line-scan image geometric transformation model achieved precise geometric alignment. In the anomaly detection stage, edge information is extracted from the template image and the registered target image, and anomaly detection of EMU trains is achieved through edge comparison, edge expansion, and edge connection. The experimental results on the line-scan image of EMU trains show that the two-stage method proposed in this paper can achieve the registration of line-scan images of EMU trains, and on this basis, achieve detection and segmentation of abnormal areas of EMU trains.

(2024) Published by SPIE. Downloading of the abstract is permitted for personal use only.

Citation Download Citation

Lei Fang, Zelin Shi, Chuanmin Xiao, Yunpeng Liu, Mingqi Pang, and Enbo Zhao "Anomaly detection of EMU trains based on line-scan image registration", Proc. SPIE 13278, Seventh Global Intelligent Industry Conference (GIIC 2024), 132780K (10 October 2024); https://doi.org/10.1117/12.3032281

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KEYWORDS

Image registration

Education and training

Line scan image sensors

Target detection

Image restoration

Image processing

Cameras

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