Short blog on returning to the water and using UWIS navigator to locate and mark sonar targets
Blog post discussing the value of photogrammetry preserving evidence with higher levels of detail available for online viewing
Short discussion on first dive after COVID-19 lockdown and using UWIS tracker for 3D reconstruction and improving local accuracy of model with adjustments to tracker unit location.
Underwater GPS being used to reconstruct 3D photogrammetry models.
Reprocessing old data to yield new results. Lessons learned from police forensic requirements applied to the SS Gwladmena.
Discussion around the use and benefits of accurate GPS values with image alignment in photogrammetry
Slope Analysis As we have discussed before Digital Elevation Models help us understand subtle changes in depth (or height) of the subject. We also think they are art in their own right. Tucked away in the 1.4 release of Agisoft Photoscan Pro is a preference that adds slope analysis. The colours applied to the model Read more about DEMS – Another View[…]
Maritime history preserved using photogrammetry as the remains of a torpedo inadvertently snagged by a tanker anchor in weymouth bay.
Background Way back 2011 Grahame Knott of Deeper Dorset found a small wreck site in Weymouth Bay. At the time the search was on to find more of the P47-D Thunderbolt but in true shipwreck hunting fashion Grahame found another mystery. Known as the Brandy Wreck, the site had four iron guns, two anchors, a millstone and ballast stones. Read more about The Brandy Wreck – Then and Now[…]
Background A few years back Grahame Knott of Deeper Dorset found the dispersed remains of an aircraft in Weymouth Bay. Over the years pieces of the jigsaw have come together, with pieces of information as diverse as component part numbers and an entry in the Portland War Diary (Held at the National Archives) all adding up to Read more about Bolt in the Bay – P47-D Crash Site[…]