Study on Measurement of Speed and Direction of Sea Waves by Image Processing in Consideration of Ship's Attitude

船舶姿勢を考慮した画像処理による海洋波の方位・速度計測に関する研究

Study on Measurement of Speed and Direction of Sea Waves by Image Processing in Consideration of Ship's Attitude

Creators Yonezawa Toshiaki

Creators Sakata Ryuichi

When one drives the ship near quay, direction and speed of sea waves has been measured with eyes. Therefore the measurement is less-accurate. Thus its improvement has been hoped. So the study proposes a measurement system of direction and speed of sea waves using camera images as part of ship handling support system. This system films the state of sea surface with video cameras, and imports different frame imageries at each unit time (frame).　Then this system measures direction and speed of sea waves by calculating correlation coefficient between measurement window of each image after appropriate processing. It is confirmed that this system measures direction and speed of sea waves with high accuracy. Also it is confirmed that this system measures even with camera mounted on the ship affected by the rolling.

[ISSN]0386-4359

[NCID]AN00019833