• Title/Summary/Keyword: 종이 열화

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Class 1·3 Vehicle Classification Using Deep Learning and Thermal Image (열화상 카메라를 활용한 딥러닝 기반의 1·3종 차량 분류)

  • Jung, Yoo Seok;Jung, Do Young
    • The Journal of The Korea Institute of Intelligent Transport Systems
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    • v.19 no.6
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    • pp.96-106
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    • 2020

  • To solve the limitation of traffic monitoring that occur from embedded sensor such as loop and piezo sensors, the thermal imaging camera was installed on the roadside. As the length of Class 1(passenger car) is getting longer, it is becoming difficult to classify from Class 3(2-axle truck) by using an embedded sensor. The collected images were labeled to generate training data. A total of 17,536 vehicle images (640x480 pixels) training data were produced. CNN (Convolutional Neural Network) was used to achieve vehicle classification based on thermal image. Based on the limited data volume and quality, a classification accuracy of 97.7% was achieved. It shows the possibility of traffic monitoring system based on AI. If more learning data is collected in the future, 12-class classification will be possible. Also, AI-based traffic monitoring will be able to classify not only 12-class, but also new various class such as eco-friendly vehicles, vehicle in violation, motorcycles, etc. Which can be used as statistical data for national policy, research, and industry.

  • https://doi.org/10.12815/kits.2020.19.6.96 인용 PDF KSCI

Analysis of cause and deterioration about using 3-Arch tunnel (공용중인 3-Arch터널의 열화조사 및 원인분석)

  • Lee, Yu-Seok;Park, Sung-Woo;Whang, In-Baek;Shin, Yong-Suk;Kim, Sun-Gon
    • Journal of Korean Tunnelling and Underground Space Association
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    • v.11 no.1
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    • pp.97-105
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    • 2009

  • This paper studied the cause of the deterioration of the four 3-Arch tunnels built in mid-1990. The common deteriorations of the four 3-Arch tunnels were longitudinal cracks, leakage and efflorescence at the same parts of lining concrete. Three fourths of 3-Arch tunnels, there was high percentage longitudinal cracks and a quarter was low frequency about longitudinal cracks. So the material reviewed to find out the differences between two groups in construction process and analysis was conducted such as non-destructive testing, precise visual survey and safety evaluation of one tunnel which had bad ground condition As the result, the tunnels were safety condition and the primary deterioration occurred during the construction process, namely, problems arrangement of rebar and the effects of the blast at middle tunnel.

  • https://doi.org/10.9711/KTAJ.2009.11.1.097 인용 PDF

코팅지 강제 열화에 관한 연구

  • Kim, Yeong-Uk;Lee, Min-U;Kim, Jong-Jin;Kim, Min-Ji;Seo, Yeong-Beom
    • Proceedings of the Korea Technical Association of the Pulp and Paper Industry Conference
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    • 2009.04a
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    • pp.15-22
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    • 2009

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