Photogrammetry is

producing realistic 3D models by processing large number of photos of a real-life object

Free Setup

I use this free workflow method, but please research your own:

 

 

 

Good Training Videos

Only supports 50 photos

Exports directly to SketchFab

Sketchfab Free:

Limit of 50mb model

 

 

 

 

 

 

Software steps

1) Loaded photographs, software calculates camera locations

 

 

 

 

 

2) Generate sparse point cloud

 

 4) Create mesh and apply texture

 

 

Photospheres are a way of displaying 360 photos in Altspace.

All the skyboxes are 360 (or spherical) images.

You can take your own 360 images and replace the skybox, or display as a photosphere. Monoscopic.

A Photosphere in front of a Model in front of a Skybox

Cameras

Usually two fisheye lenses, shots stitched to one 360 image 

Step inside

An Altspace Avatar can 'step inside' a photosphere to view from where the camera was; and see the photo surrounding oneself.

 

This is a simple way of giving multiple realistic views, rather than building large scale photogrammetry models.

Unity steps

1) Import 'inverted sphere' package

                   

2) Import 360 photo as a texture asset

 

3) Place sphere in scene

 

4) Apply texture to sphere

 

5) Upload to Altspace in template or kit (switch OFF collider)

 

 

 

 3d (stereoscopic)

and VR180

 

 In 2017 Google announced a new photo/video format: VR180

and consumer camera: Lenovo Mirage

 

 

•  Two Fisheye lens
•  Spaced approx. at IPD
•  3d, stereoscopic images

 

Not a commercial success

Google made VR180 format opensource

Cunning Cameras

Enterprising manufactors & startups came up with Combination 3d or 360 cameras.

 

.

Unity steps

1) Import 'VR180 hemisphere' package

                   

2) Import VR180 photo as a texture asset

 

3) Place hemisphere in scene

 

4) Create Material, add Unlit Texture

     Stereo shader

 

5) Apply material to hemisphere

 

6) Upload to Altspace in template

    or kit (switch OFF collider)

 

 

 

 See examples in worlds

   Marshmallow Camp (not hemispheres)

 

  By Bani:

 

  Greece and Alaska 3D Gallery

  Toronto 3D Gallery Downtown

 

   By MarkJ:
   

   Sudbury Hall Gallery

   Colchester Sensory Garden