Services

As result of previous and ongoing collaboration with Academic Institutions, Perrone Robotics is able to provide services based on the latest innovations in the research field.

Underwater Images Mosaic

This service, entirely based on the work of Dr. Nuno Gracias, is capable to reconstruct the whole picture composed by the image sequence recorded by the ROV's camera. The algorithm works nearly real-time allowing to refine the sequence improving the mosaiced image while the ROV is still on the sea bottom. It is a very practical tool in case of underwater pipeline survey or where a relatively large surface has to be analyzed. In the former case it is sufficient for the ROV/AUV to just "fly" over the pipeline, while in the latter the ROV/AUV has to follow the classical "hand brush painting" pattern in order to reconstruct the whole area. Compared with Side Scan Sonar survey this service yields better image resolution and add colour as a feature, but its performance is affected by water turbidity. It could be used in case of routine survey (dam inspection), underwater criminology (crime scene investigation), or whenever a non questionable and comprehensive display of a accomplished task is requested.
Once the mosaic has been constructed, it allows other operations as pose estimation and mosaic navigation: this features are of great interest in case of on-spot missions of intervention AUVs. Few schematic examples will better explain the basic principles. The images are courtesy of Vislab at Instituto Superior Tecnico Lisbon Portugal and of Drafinsub Srl Genova Italy.