Discussion on UWIS navigation and Metashape photogrammetry using depth maps
Regular followers of the Vobster Photogrammetry Project will know we have been working on this for some time. The project is all done in our spare time, for free and for the sheer joy of pushing the boundaries of photogrammetry. The game changer has been the introduction of UWIS and underwater GPS. To keep the Read more about A Snapshot in Time[…]
Underwater GPS being used to reconstruct 3D photogrammetry models.
Underwater GPS meets Photogrammetry For a while we have been using GPS located cameras to construct highly accurate models of defensive structures known as pillboxes. Fixing a camera position above the waves is straightforward enough and you can build representative models without additional scale bars or measurements if the GPS signal is accurate. The problems Read more about Accuracy Defined?[…]
Details of the Vobster Quay underwater navigation day – showcasing how we use the latest technology to answer “where am I?”
Living in the South East of the UK you are never far away from reminders of more turbulent times. Built during 1940/41 and stretching across the the country are lines of bunkers – known as pillboxes – and other fortifications intended to slow down an invading army. Type 24 Pillbox by Deep3D on Sketchfab. Thankfully Read more about Line of Control[…]
Discussion on the benefits of orthophotos, the limitations of viewing these files online and how a solution to online viewing has been found.
The seabed and wrecks are dynamic environments. As divers we are not always aware of just how much things change unless something dramatic occurs. In 2012 the stern of the Karlsruhe was very ship-shape with neat lengths of teak decking in place. Then the stern winch capstan collapsed to the seabed and upended everything. Anything Read more about For The Wrecks They Are A-Changin[…]
Last week we set out to scan the wreck of the SMS Karlsruhe, one of the ships scuttled on the 21st of June 1919 in Scapa Flow. Everything was set; the Heart of Gold was prepared, the Suex scooter ready and the mindset was prepared for some serious scanning. The base for the week was Read more about Invasion of the Wreck Snatchers[…]
Sketchfab Maps The previous update discussed how Sketchfab labs had started to test the waters with geo locating 3D models. One limitation for those of us who work with underwater photogrammetry was precise location. When generating the tagging code all we could was get close and there was no way to enter precise longitude and latitude coordinates. Read more about Recent News – Maps and Mags[…]