Journal of the Institute of Electronics and Information Engineers (전자공학회논문지)

The Institute of Electronics and Information Engineers (대한전자공학회)
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A Framework of Recognition and Tracking for Underwater Objects based on Sonar Images : Part 1. Design and Recognition of Artificial Landmark considering Characteristics of Sonar Images

소나 영상 기반의 수중 물체 인식과 추종을 위한 구조 : Part 1. 소나 영상의 특성을 고려한 인공 표식물 설계 및 인식

  • 이영준 (한국해양과학기술원 해양시스템연구부) ;
  • 이지홍 (충남대학교 메카트로닉스공학과) ;
  • 최현택 (한국해양과학기술원 해양시스템연구부)
  • Received : 2013.11.19
  • Published : 2014.02.25
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Abstract

This paper proposed a framework of recognition and tracking for underwater objects using sonar images as an alternative of underwater optical camera which has the limitation of usage due to turbidity. In Part 1, a design and recognition method for 2D artificial landmark was proposed considering the practical performance of current imaging sonars. In particular, its materials are selected in order to maximize detectability based on characteristics of imaging sonar and ultrasonic waves. It has a simple and omni-directional shape which allows an easy modeling of object, and it includes region based features as identifications. Also, we proposed a real-time recognition algorithm including edge detector, Hough circle transforms, and shape matrix based recognition algorithm. The proposed methods are verified by basin tests using DIDSON.

본 논문은 탁도의 영향으로 사용이 제한적인 수중 광학 카메라의 대안으로 수중 영상 소나(imaging sonar)를 사용하여 수중 물체를 인식하여 추종하는 구조를 제안한다. Part 1에서, 영상 소나의 현실적인 성능을 고려한 2차원 인공 표식의 설계 방법과 인식 방법을 제안한다. 특히 영상 소나와 초음파의 특성을 분석하여 피인식성을 극대화 할 수 있는 재료를 선택하였으며, 물체의 모델링이 쉬운 무지향성이며 단순한 외형을 채택하고, 표식으로 사용이 가능한 영역 기반 특징 요소를 포함한 내부 형태를 제안하였다. 또한 제안한 인공 표식을 실시간으로 인식할 수 있는 방법을 제안하였다. 이 방법은 외곽선 추출, 허프-원-검출기에 의한 유사도 및 위치 추정, 형상 행렬의 비교에 의한 표식의 분류하는 알고리즘을 포함하고 있다. 제안한 인공 표식과 인식 알고리즘의 유용함을 DIDSON (영상 소나)를 사용한 수조 실험으로 검증하였다.

Keywords

References

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