3.02.01 – Case Study 01 – Aircraft interior scan : SpheronVR SceneCam vs NCTech iSTAR : Image Fidelity

Direct comparisons between outputted images.

Panorama comparison (images scaled down to 3,000 pixels wide and viewing angle made common)

Both images are tone-mapped / exposure controlled using the native, proprietary software supplied with each system (as opposed to third-party solutions). The Spheron system uses ‘tone-mapping’ algorithm and the iSTAR uses Exposure Fusion technique.

iSTAR Image (Top) – Default processing settings

Spheron Image (Bottom) – Tone Mapping option inside SceneCam software

  • Key = 0.04
  • White Luminance = 5.0
  • Gamma = 2.20

NCTech Immersive Studio Viewer


Above : Screenshot of iSTAR image:

  • washed out due to excessive lens flare
  • Fair detail capture though

Spheron SpheroViewer


Above : Screenshot of Spheron image :

  • No lens flare
  • Much Better contrast

SpheroViewer has one more trick up its sleeve however, as the view is derived from native .SPH file, so full dynamic range is accessible, so we can adjust exposure whilst viewing. Same would be true of an EXR opened in the SpheronViewer.


Above : Same view, but with +1.5 EV adjustment

Close Up Detail Comparison

NCTech Immersive Studio Viewer


Above : Screenshot of iSTAR image – stitching issues at the zenith of capture


Above : Screenshot of Spheron SceneCam image : no corruption at zenith or exposure issues


Above : Screenshot of iSTAR image : Label behind the flap controls

  • Text is not discernible

Spheron SpheroViewer


Above : Screenshot of Spheron image : Label behind the flap controls

Text is legible

Next Page : Conclusion / Reflection on iSTAR Fusion system

Next Page : Conclusion / Reflection on SpheronVR SceneCam system

Menu Page / Menu Home