A Study on Three-Dimensional Motion Tracking Technique for Floating Structures Using Digital Image Processing

J. Ocean Eng. Technol. 1998;12(2):121-129.

Jo, Hyo-Je;Do, Deok-Hui;

Korea Maritime University;Korea Maritime University;

디지털 화상처리를 이용한 부유식 구조물의 3차원운동 계측법에 관한 연구

조효제;도덕희;

한국해양대학교;한국해양대학교;

Keywords: Non-contact Multi-point Measurement, Digital Image Processing, Three-Dimensional Movement, Floating Structure, Position Identification, Camera Calibration

핵심용어: 비접촉 다점측정, 디지털화상처리, 3차원 운동, 부유식구조물, 위치결정, 카메라 교정

Abstract

A quantitative non-contact multi-point measurement system is proposed to the measurement of three-dimensional movement of floating vessels by using digital image processing. The instantaneous three-dimensional movement of a floating structure which is floating in a small water tank is measured by this system and its three-dimensional movement is reconstructed by the measurement results. The validity of this system is verified by position identification for spatially distributed known positional values of basic landmarks set for the camera calibration. It is expected that this system is applicable to the non-contact measurement for an unsteady physical phenomenon especially for the measurement of three-dimensional movement of floating vessels in the laboratory model test.