日本地球惑星科学連合2022年大会

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[J] 口頭発表

セッション記号 H (地球人間圏科学) » H-TT 計測技術・研究手法

[H-TT20] 浅部物理探査が目指す新しい展開

2022年5月25日(水) 13:45 〜 15:15 201B (幕張メッセ国際会議場)

コンビーナ:尾西 恭亮(国立研究開発法人土木研究所)、コンビーナ:横田 俊之(国立研究開発法人 産業技術総合研究所)、磯 真一郎(公益財団法人 深田地質研究所)、コンビーナ:木佐貫 寛(応用地質株式会社)、座長:木佐貫 寛(応用地質株式会社)、磯 真一郎(公益財団法人 深田地質研究所)

14:00 〜 14:15

[HTT20-02] GPRデータの深層学習によって検出された反射位置を用いた地下埋設物の解釈補助手法の検討

*磯 真一郎1 (1.公益財団法人 深田地質研究所)

キーワード:地中レーダー、機械学習、データ解釈

Many attempts have been made to identify the presence and type of buried objects by applying machine learning methods to ground penetrating radar reflection data.

Machine Learning, especially Deep Learning, may be advantageous to data acquired in various environments and methods, such as GPR surveys, because there is no need to define the critical features for classifying the target data in advance. In addition, Machine Learning technology continues to evolve rapidly, and imaging provides a relatively simple Machine Learning environment for data acquisition method-independent frameworks.

The author also showed in 2018 that AlexNet Deep Learning Model could detect buried objects from subsurface radar reflectors. However, this only superimposed the deep-learning predicted anomalous points of reflection by the subsurface buried objects on the GPR cross-section.

As a reality, in the daily interpretation of buried objects, the GPR interpreter comprehensively judges the refractor location and the physical characteristics and shape of objects such as cavities and underground pipes.

The author explores how Deep Learning results, such as reflector locations, can help interpret GPR section images and the points of relative anomalies created from multiple GPR2D section images to classify underground buried objects. This method is expected to improve the reliability of interpretation and, at the same time, give a specific reason for judgment to the determination result of Deep Learning applications, which tends to be a black box.