Digital Preservation

When combined with scaling and geolocation photogrammetry really excels at preserving the ‘as is’ state of a subject. The process is efficient too enabling evidence to be gathered far quicker than traditional methods.

These were just two reasons why Accupixel were selected to deliver Metashape Professional software and training services to Devon and Cornwall Police. Following a serious collision photogrammetry will be used to preserve evidence and open the roads faster and the training to equip officers with the skills has started.

History Preserved

For cultural heritage the principles remain the same and this wreck site is a good example.

Discovered in 2015 by Grahame Knott of Deeper Dorset during a sonar survey the Chesil offshore cannon site lies in 25m of water: can host very high poly count models so we have reprocessed the 2015 data to reveal more detail. We also get in-context viewing so the default view of the model looks east along the Chesil towards Portland Bill which is visible on the horizon.

We also know the wreck site is 9.96 miles from Grahame’s house as the seagull files thanks to Construkted enabling measurement too.

Naturally there follows a ortho photo of the site hosted by our friends at Dronelab:

Since 2015 the wreck site has been scheduled as a protected wreck and has been subsequently surveyed by Wessex Archaeology and MAT. There is now a trail of evidence being generated that records what changed and between what dates.

All three surveys can be compared and persist as a record of what was there. This is becoming an invaluable tool that will be used by forensic collision investigators and archaeologists so why not apply it to other fields?

The DEM of the Chesil Cannon Site