Difference between revisions of "Stereoscopic analysis"

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== GRASS 5 ==
== GRASS 5 ==
; Georeferencing in 3D from multiple 2D images
'''Creating a DEM from overlapping images'''

Revision as of 06:06, 9 September 2013


Creating a DEM from overlapping images

Stereo basic.gif

There is some old GRASS 5 software in

http://grass.osgeo.org/outgoing/grass5/ → stereo

which does this job. It awaits integration into GRASS 6+.

Tutorial: http://grass.osgeo.org/gdp/stereo-grass/index.html


Viewing existing data as stereo 3D

The d.anaglyph addon module provides an easy way to create 3D anaglyphs and stereographs. It uses the m.nviz.image module to render two viewpoints, then from those two images composes the 3D image into a single PNG file. In time it should be possible to port this functionality into NVIZ itself.


Red/cyan anaglyph created with the d.anaglyph module
Anaglyph glasses.png


Stereogram with fiducials created with the d.anaglyph module (requires stereoscope viewer)
Stereoscope viewer

"Free-view" Stereogram

  • No special viewing equipment needed: just focus into the distance or cross your eyes.
  • Here is a nice how-to-view article
  • Screenshot: (created with the d.anaglyph module)

Spearfish freeview stereogram.png

See also