10.6084/m9.figshare.10038764.v1 Junichi Okuyama Junichi Okuyama Kana Nakajima Kana Nakajima Kenta Matsui Kenta Matsui Yuichi Nakamura Yuichi Nakamura Kazuaki Kondo Kazuaki Kondo Takahiro Koizumi Takahiro Koizumi Nobuaki Arai Nobuaki Arai MOESM2 of Application of a computer vision technique to animal-borne video data: extraction of head movement to understand sea turtles’ visual assessment of surroundings Springer Nature 2019 Accelerometer Bio-logging Cognition Dive Gyroscope Image processing Still image Template matching Chelona mydas 2019-10-24 13:26:58 Journal contribution https://springernature.figshare.com/articles/journal_contribution/MOESM2_of_Application_of_a_computer_vision_technique_to_animal-borne_video_data_extraction_of_head_movement_to_understand_sea_turtles_visual_assessment_of_surroundings/10038764 Additional file 2. The relationship between the carapace tilt angle on the sway (lateral) axis and horizontal head position. A significant relationship (y = 0.39x + 0.91, R2 = 0.13, N = 16915, F = 292, P < 0.01) indicates that turtles tended to move their heads to the side in which they were tilted.