Method of railway shunting operation sheet information extraction guided by table header

Abstract The railway shunting operation sheet is the written plan of the shunting operation. In the current shunting operation preparation process, signalmen must input the plans manually for subsequent execution, which is inefficient and at risk of misoperation. Here, an information extraction method is proposed to convert shunting operation sheet images to readable instructions for Continuous Train Control (CTC) systems. First, the shunting operation sheet images are preprocessed to facilitate subsequent text recognition based on the Paddle OCR model. Second, the table is located and reconstructed with the results of recognized contents and coordinates of texts. Then, the results of the table reconstruction were optimized based on the tabulation rules of shunting operation. Finally, tabular texts containing structural and attribute information are transcribed into eXtensible Markup Language (XML) format, which can be read automatically by CTC systems based on the C programming language. The proposed approach was evaluated on real‐world samples, and the results showed that the comprehensive accuracy of information extraction was 0.85. Furthermore, a pre‐processing combination strategy was established to improve the accuracy and generalizability of the proposed method.

Abstract licence: CC BY-ND

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