Intro to Photogrammetry

19 June 2017

NFTS

Philo van Kemenade

@phivk

@unfoldSays

Photogrammetry

is the science of making measurements from photographs

Photogrammetry

reconstructs 3D points and shapes
based on shared features amongst a set of images

When taking photos, your object needs to be always in view.

object

When scanning a free-standing object, encircle it, then focus on more complex details.

When photographing make sure that:

• Your white balance is set manually
• Your exposure is fixed
• Your subject is in focus in every shot
• As much of the scene as possible is in focus (avoid zooming / shallow dept of field)
• If possible, enable HDR, mainly if your object is partly in shade

Please capture:

• 3 small objects (smaller than a laptop)
• 2 bigger objects (bigger than a laptop)

SKETCHFAB API

 4ba140b133f7454a81724ecf96bad599

Shared notepad

tiny.cc/nfts-vrworkshop-2017

Useful Links

 Tools

Photogrammetry 3D reconstruction:

• VisualSFM : A Visual Structure from Motion System: http://ccwu.me/vsfm/ (an alternative to PhotoScan)

• walkthrough http://wedidstuff.heavyimage.com/index.php/2013/07/12/open-source-photogrammetry-workflow/
• Agisoft http://agisoft.com/
• Comparison of Photogrammetry software 
  • http://ryanfb.github.io/etc/2015/01/23/photogrammetry_software_roundup.html
  • http://en.wikipedia.org/wiki/Comparison_of_photogrammetry_software
• DotSwarm: Pointcloud animation tool http://dotswarm.nz/
• Cloud Compare http://www.danielgm.net/cc/
• Wrap http://www.russian3dscanner.com/

  

 

Useful Links

 

Artists using photogrammetry

        Clement Valla 

    Hugo Arcier  

    Charles Sainty

    Lorna Barnshaw 

 

These slides: slides.com/phivk/photoscan

This workshop and slides are inspired by the Exquisite City workshop by James George and Alexander Porter from the awesome SPECULAR Scatter studio.

They make, teach and share amazing stuff, check them out!