Underwater imaging dataset in a very shallow water environment of Pramuka Island, Seribu Island District, Indonesia

In this article, we present a dataset of underwater videos captured through manual dives in a complex and unstruc-tured seabed area dominated by harbor structures and coral reefs. The area is shallow (0.5 - 7.0 m depth) with an en-closed embayment for the harbor area, offering protection from ocean currents and waves. The coral reef area is lo-cated in a more open ocean sloping gently toward the deeper seafloor, leading to a more pronounced rolling shutter effect and camera motion. The dataset was collected using a GoPro Hero 10 camera, em-ploying a standard wide lens with a horizontal field of view (FoV) of 109 & DEG; and 768 x 432 image resolution. The camera is also equipped with an Inertial Measurement Unit (IMU) sen-sor, comprising a 200 Hz frequency accelerometer and gy-roscope. During underwater deployment, the camera is pro-tected with a 5 mm thick flat glass panel. This camera setting hence creates three medium layers of water-glass-air leading to additional refraction distortion. To address the refraction distortion, the dataset has been subject to pre-calibration utilizing flat refractive geometry found in the Pinax camera model. The Pinax camera model for the underwater imagery is calculated by combining the aspects of pinhole calibration parameters with axial camera projection. The main aim of the dataset collection is to facilitate the testing and evaluation of underwater imaging algorithms that are used in underwater robotics, such as computer vision, photogrammetry, and Simultaneous Localization and Mapping (SLAM). & COPY; 2023 The Author(s). Published by Elsevier Inc. This is an open access article under the CC BY license ( http://creativecommons.org/licenses/by/4.0/ )

Automated summary

In this article, a dataset of underwater videos captured in a complex and unstructured seabed area dominated by harbor structures and coral reefs is presented. The dataset includes shallow areas with protection from ocean currents and waves, as well as areas with rolling shutter effect and camera motion. The dataset was collected using a GoPro Hero 10 camera with a wide lens and IMU sensor, and has been subject to pre-calibration to address refraction distortion. The main purpose of the dataset is to facilitate the testing and evaluation of underwater imaging algorithms used in underwater robotics.