Remote underwater inspections of hydropower infrastructure using photogrammetric methods

The use of photogrammetry for underwater concrete assessment represents a significant advancement in the inspection and maintenance of dam infrastructure. This paper discusses the methodology and benefits of employing remotely operated vehicles (ROVs) equipped with high-resolution cameras and advanced lighting systems to capture detailed imagery of submerged concrete structures. The primary advantage of this approach is the ability to collect uniform, high-quality data while eliminating the need for divers, thereby reducing personnel risk and ensuring a consistent level of detail in data acquisition.