A feasibility study of ship positioning by CCD image process

• Main Authors: Tso-Yuan Yeh, 葉佐元
• Other Authors: Chung-Ren Chou
• Format: Others
• Language: zh-TW
• Published: 2006
• Online Access: http://ndltd.ncl.edu.tw/handle/55217125883845667369

碩士 === 國立臺灣海洋大學 === 河海工程學系 === 94 === Abstract The thesis is to discuss indoor ship positioning. We used CCD camera to photograph the sailing ship first, and used some programs to cut the film then changed them into photos. Next, we used some programs to gray scale the photos. Then found the coordination of the ship by surveying different gray scales of the pictures, and derived the speed of the ship. We changed different rotational speeds to start turning test. And we found that the starboard whirl orbits are less than the port ones. At the same speed, we used each 0.5 second and each 0.2 second to analyze. Compare those two results, we found that whirl orbits are much more circular and smooth at the each 0.5 second. About the speed, the rotational speeds decreased from the initiation to the one-fourth of it, and kept decreasing until the speed decelerated to one third and a half.