====== RealViz (Autodesk) Stitcher Work Flow ======

  - Import Photos
  - Edit> Properties
    * focal length : initialized [focus, degree]
  - Place image into 3D space and align
    * [Shift key to set rotate pivot]
    * Tool > High Distortion > calibrating to minimize the Lens distortion effect
    * enter key to confirm
    * calibrate every after a while
    * [alt key for rotate entire image]
    * ctrl + p -> test render
  - Close the panorama
    * Stitch > Close panorama
  - Align Horizontal line
    * enter 2 point to define horizon
  - Render
    * format
    * type: spherical
    * size
    * wid x height ==> 2 to 1
    * best rendering size : off
  - Memory
    * Edit > Preference > Memory
    * set to 0 for virtual ram