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Development of Camera-Based Measurement System for Crane Spreader Position using Foggy-degraded Image Restoration Technique

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키워드

주제분류해상운송학

초록

In this paper, a foggy-degraded image restoration technique with a physics-based degradation model is proposed for the measurement system. When the degradation model is used for the image restoration, its parameters and a distance from the spreader to the camera have to be previously known. In the proposed image restoration technique, the parameters are estimated from variances and averages of intensities on two foggy-degraded landmark images taken at different distances. Foggy-degraded images can be restored with the estimated parameters and the distance measured by the measurement system. On the basis of the experimental results, the performance of the proposed foggy-degraded image restoration technique was verified.

Abstract

In this paper, a foggy-degraded image restoration technique with a physics-based degradation model is proposed for the measurement system. When the degradation model is used for the image restoration, its parameters and a distance from the spreader to the camera have to be previously known. In the proposed image restoration technique, the parameters are estimated from variances and averages of intensities on two foggy-degraded landmark images taken at different distances. Foggy-degraded images can be restored with the estimated parameters and the distance measured by the measurement system. On the basis of the experimental results, the performance of the proposed foggy-degraded image restoration technique was verified.

참고문헌 (10)

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  2. Hideki Kawai, "Anti-sway system with image sensor for container cranes", Journal of Mechanical Science and Technology, 23(10), pp.2757~2765 (2009), 대한기계학회
  3. Kawai H., "Measurement System Design for Sway Motion Based on Image Sensor", Networking, Sensing and Control, ICNSC'09. International Conference, pp.185~188 (2009), ICNSC'09.International Conference
  4. Kim Y.H., "Performance Analysis and Design of a High Efficiency Gantry Crane", Journal of Navigation and Port Research, 14(4), pp.395~406 (2000)
  5. 이숙재, "컨테이너크레인 시스템의 슬라이딩모드제어", 한국항해항만학회지, 29(8), pp.747~753 (2005), 한국항해항만학회
  6. 이수룡, "설계사양을 고려한 컨테이너 크레인의 RCGA기반 상태 관측기 설계", 한국항해항만학회지, 32(10), pp.851~856 (2008), 한국항해항만학회
  7. Mori K., "Recognition of Foggy Conditions by In-vehicle Camera and Millimeter Wave Radar", Intelligent Vehicles Symposium, 2007 IEEE, pp.87~92 (2007)
  8. Narasimhan S.G., "Contrast Restoration of Weather Degraded Images", IEEE Trans.Pattern Analysis and Machine Intelligence, 25(6), pp.713~724 (2003)
  9. Park C.H., "A Study on Sway Control of Containers of Yard Crane", Proceedings of the 2000 Autumn Conference ofKorean Institute of Navigation and Port Research, pp.143~151 (2000)
  10. Son D.S., "A Study on Anti-sway of Crane using Neural Network Predictive PID Controller", Proceedings of the 2002Spring Conference of Korean Institute of Navigationand Port Research, pp.219~227 (2002)

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