Presented on 19 May 2026: Session 2 The on-bottom stability of subsea infrastructure is influenced by its interaction with the seabed, which can change over time due to operational and environmental factors. The application of photogrammetry techniques to non-dedicated subsea remotely operated vehicles (ROV) video footage offers a novel approach to assessing subsea infrastructure and its interaction with the seabed. This study outlines the use of archived ROV video footage to generate high-resolution 3D quantitative models using Structure-from-Motion photogrammetry. These models provide a detailed depiction of structure-seabed contact conditions, including the identification of sediment transport processes such as local scour or the build-up or wash-out of soil berms. The photogrammetry technique can be applied to the analysis of time-gapped ROV video footage to quantitatively assess the evolution of the structure-seabed contact in dynamic seabed environments or changes brought about by the operation of the infrastructure. As part of asset monitoring, workflows may be developed for semi-automated 3D photogrammetric model comparisons. To access the Oral Presentation click ‘Supplementary data’ below. To read the full paper click here
Antonio Borges Rodriguez (Thu,) studied this question.