Photogrammetry – Reality Capture

We are photogrammetry specialists, now often referred to as reality capture, whether it’s a large site or small highly detailed artifacts, here at WGP Digital we have the knowledge and experience to provide effective solutions.

Using photogrammetry for surveying, 3d visualisations and 3d modelling is a highly effective solution, the use of drones/UAVs has further enhanced the photogrammetry process and deliverables.

“Photogrammetry is the art and science of extracting 3D data from photographs. The process involves taking overlapping photographs of an object, structure, or space, and converting them into 2D or 3D digital models.”

Reality capture example

Interactive 3D model of St. James’s Church – a mixture of aerial and ground based imagery…

Reality capture example

Video clip of 3D model of St. Hubbert’s Church – a mixture of aerial and ground based imagery, zoomed in detail towards the end…

Please note that this is a 3d meshed model – the video zooms in towards the end showing the level of detail achieveable!

Photogrammetry uses

  • Topographic surveys using a drone/UAV – especially for large areas, quarries etc. Where ‘feet on the ground’ surveys are too time consuming or difficult to reach.
  • 3d models of artifacts – high resolution models of artifacts, accurate and realistic. See my case study on the Minerva Temple where this method was put to great use.
  • 3d models of buildings – for internal or external uses, ground imagery can be combined with a drone/UAV to produce a point cloud/3d mesh.
  • Rectified photography – again using ground and drone imagery produce high resolution rectified photographs, read more…
  • Visualisations – for photorealistic visualisation schemes.

More information

Historic England have produced a very informative 128 page guidance document, this explains all the different aspects and methods used in photogrammetry:

Download or view the PDF guidance pack here

FAQ

How accurate is photogrammetry?

Millimetre accuracy is achieveable for small models or buildings – but dependant on comprehensive control or grid, however large schemes, sites etc the accuracy will decrease to centimetres.

Is photogrammetry expensive?

In most cases it can be a more cost effective solution than laser scanning or boots on the ground survey. Worth discussing the project objectives to determine the most efficient solution.

If you require any further information or have a project in mind, please do not hesitate to get in touch…


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