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Journal of Flow Visualization and Image Processing

年間 4 号発行

ISSN 印刷: 1065-3090

ISSN オンライン: 1940-4336

The Impact Factor measures the average number of citations received in a particular year by papers published in the journal during the two preceding years. 2017 Journal Citation Reports (Clarivate Analytics, 2018) IF: 0.6 The Immediacy Index is the average number of times an article is cited in the year it is published. The journal Immediacy Index indicates how quickly articles in a journal are cited. Immediacy Index: 0.6 The Eigenfactor score, developed by Jevin West and Carl Bergstrom at the University of Washington, is a rating of the total importance of a scientific journal. Journals are rated according to the number of incoming citations, with citations from highly ranked journals weighted to make a larger contribution to the eigenfactor than those from poorly ranked journals. Eigenfactor: 0.00013 The Journal Citation Indicator (JCI) is a single measurement of the field-normalized citation impact of journals in the Web of Science Core Collection across disciplines. The key words here are that the metric is normalized and cross-disciplinary. JCI: 0.14 SJR: 0.201 SNIP: 0.313 CiteScore™:: 1.2 H-Index: 13

Indexed in

TRAIN EARLY WARNING METHOD COMBINING OPTICAL FLOW AND DIFFERENTIAL

巻 29, 発行 1, 2022, pp. 69-87
DOI: 10.1615/JFlowVisImageProc.2021038389
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要約

Aiming at the problems of the low efficiency of manual surveillance methods, high false alarm rate of radar early warning, and limited environmental conditions of the global positioning system early warning, this paper proposes an accurate and real-time early warning system for railway operations. It combines the advantages of interframe difference and optical flow. This method first uses the symmetric difference method to quickly extract the moving area and then only calculates the optical flow value of the moving area. It can be obtained by shooting videos and experiments on the railway site. This method can accurately detect the train entering the protection section and send an alarm in a variety of on-site environmental conditions. Experiments show that the relative error of the focal length conversion method is 99.52%, which is about the measured distance and the actual distance. The detection distance is 794.5 m.

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