定点モニタリングのための海中動画像補正手法

Method of underwater image correction for stationary monitoring

小池 健司*; 高橋 悟*; 川端 邦明   ; 鈴木 剛*; 武村 史朗*

Koike, Kenji*; Takahashi, Satoru*; Kawabata, Kuniaki; Suzuki, Tsuyoshi*; Takemura, Fumiaki*

本稿では、海中での定点モニタリングを目的とした海中動画像の補正手法について述べる。マリンタグと称するランドマークを複数トラッキングすることで画像の撮像姿勢を推定し、それを補正する。実験による手法の効果について評価した。

We propose a method of estimating amount of attitude change of stationary sensor node which is important to realize observation of identical spot for a long term based on the tracked position data of underwater landmark, it is called marine tag, generated on underwater image, and then in order to see a target, in here a coral, in the fixed position on image, attitude of captured image is corrected based on the estimated amount of attitude data. Then, we estimate amount of attitude change of sensor unit of stationary sensor node by optimizing the evaluation function based on Steepest Descent Method, and correct the attitude of original image with the estimated attitude data. Through some experiments, we prove the effectiveness of our proposed method.