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Capturing the world for VR

Capture

Panoram

  • Google Photo Sphere
  • Hugin
  • lighweight
  • easy to caputre
  • realtime
  • can be augmented with simple modling
  • bad at expanding. Requires augmanation.

Improvements

  • spawn props

  • mark floor

  • mark lines and cubes. where stuff hits the floor.

  • What can I dirive from something I know is a line?

  • Stero would proably be the best of both worlds.

  • Stero percsion with depth scales like a human (no derp)

  • or just 2d regions.

  • so draw a line on the ground

  • process it.

  • using a large number of lenses is better from a processing persepctive.

3D scaner

  • several tools.
  • faster + more relibable
  • realtime
  • kinect demo
  • realsense demo
  • slam

Model

  • manual
  • very good runtime performance

Photogrammetry

  • benifits from stero (Stereophotogrammetry)
  • vslam
  • can be realtime
  • messy and unreliable

By Valve An open source tool

Software

  • Autodesk Memento Beta (Web-backed, Propertary)
  • Autodesk 123D catch (Web-backed, Propertary, Free)
  • Autodesk ReCap 360 (Web-backed, Propertary, Free for edu)
  • Agisoft PhotoScan (Web-backed, Propertary, $)
  • VisualSFM (Opensource, Local)
  • NASA
  • VSLAM (several ros packages)
  • Laser range finder
  • Many, many more. https://en.wikipedia.org/wiki/Comparison_of_photogrammetry_software

Cleanup

You need to clean up the mesh after you obtain it with photogrammetry.

Perception

What distance should I render a photosphere?

How far do I need 3d?

IRL at 50ft, 2ft is impossible to tell

The resolution is 20 pixels per degree. Assume an ipd of 65mm distance is ipd

pixelTol==angleResolution*(tan((range+spacing)/ipd)-Tan(range/ipd))

Resolution

In theory, I need a width of 1920*4~=8k Noyst freq? So times 2.