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[…]
Freeze Frame Until now converting video into still photographs required a piece of third party software. Since the release of Agisoft Photoscan 1.4 the ability to import video directly has been added. It was time to investigate and see what this function offered us. With enough light to warm the ocean and a housed digital SLR camera Read more about Photoscan 1.4 – Importing Video[…]
In the Beginning… In our temperate northern waters there is a lack of light. The very thing that underwater photogrammetry needs is often in short supply and light is like a drug. You always want more. Underwater photographers get around the limits of natural light with flash guns or video lights and these generally work Read more about Let There Be Light[…]
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[…]
A New Version Our friends at Agisoft have released a beta edition of Photoscan Pro 1.4. With all releases there will be some additions that get our pulses racing. Animation is one such feature. Having the ability to quickly create simple short videos of our models has been on our wish list for a while. With the latest Read more about Photscan 1.4 Beta – Animation[…]
A Pretty Blob Photogrammetry is an excellent way to capture the world around us. Anyone can get involved and explore a subject that might otherwise be out of reach. The underwater world is such a place and with just 0.5% of the population able to dive bringing a shipwreck to the surface in digital 3D Read more about Photogrammetry Measurement and Scale[…]
Maritime history preserved using photogrammetry as the remains of a torpedo inadvertently snagged by a tanker anchor in weymouth bay.
Deadlines and Detail Having masses of data is a double edged sword. Too little and your images won’t align or your models lack definition. Too much and processing time jumps exponentially. Its always a balancing act between a desire for detailed models and the time available. When The Thistlegorm Project team decided to launch the website on Read more about Can We Take a Closer Look?[…]
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[…]