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Tag : Photogrammetry

13 Jan 2015

Car scanning with Photogrammetry

A new technique we have been working on for scanning full colour reflective objects using photogrammetry.

This is our second test and there is still a lot of room for improvement, objects with multiple reflective layers such as headlights are a problem as you can see from the mesh but we should be able to solve this in the coming weeks.

For the purposes of this test we deliberately chose the hardest possible car to scan, reflective white paintwork, multicolored livery and lots of pure black shiny plastic, a photogrammetry nightmare to say the least!

CarScan01

We’re using AGI PhotoScan to process over 480 images resulting in nearly 1,000,000 Tie points and a Dense point cloud of 168,000,000 points

AGI1

AGI-2   AGI-3  AGI-5

Once the scan is processed we end up with a fully textured 3D model consisting of about 11 million triangles, As I mentioned before there are still some issues with the lights and there is a lot of noise in and around hard to scan areas such as under the arches and along the bottom of the diffuser.

CarScan02

CarScan03

CarScan04

 

06 Mar 2013

360 Degree 3D head scanning

We have upgraded our Agisoft photogrammetry rig with a further 12 cameras giving us a total of 30 x canon’s

These are our first tests capturing a full 360 degree head in 1/10,000th of a second the camera layout still needs some tweaking but these early tests are very encouraging. The new version of Agisoft has an incredible mosaic texture blending allowing for super crisp high res textures, this combined with properly unwrapped UV’s gives some amazing results.

 

 

3D Head Scan

3D Head Scanning

Agisoft 3D head scan

Agisoft 3D head scanning