An Improved Oblique UAV Photogrammetry Method to Extend the Mapping Window for Submerged Seagrass Monitoring

Jundong Chen1, Peiran Li2, Jaeyong Lee3, Xinlei Shao3, Fan Zhao3, Yuan Yao4, Jun Sasaki3 and Masaaki Iiyama1, (1)Shiga University, Hikone, Japan, (2)Hitotsubashi University, Kunitachi, Japan, (3)The University of Tokyo, Kashiwa, Japan, (4)Hokkaido University, Akkeshi, Japan