Stereoscopic analysis: Difference between revisions

Latest revision as of 10:10, 9 August 2020

GRASS 5

Creating a DEM from overlapping images

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

GRASS 6

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.

Anaglyph

Stereogram

"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)

OTB Stereo Framework
Principles of Stereoscopic Parallax
NASA Ames Stereo Pipeline: a suite of automated geodesy & stereogrammetry tools designed for processing planetary imagery captured from orbiting and landed robotic explorers on other planets
e-Foto is a free educational digital photogrammetric workstation for Mac, Linux, Windows; GNU GPL
Hugin (stiches images together into panoramas) and cpfind tools (finds control points in overlapping image pairs)

@@ Line 1: / Line 1: @@
-There is an old GRASS 5 software in
+== GRASS 5 ==
-http://grass.osgeo.org/outgoing/grass5/
--> stereo
-which is doing this job. It is yet awaiting integration into GRASS 6.
+'''Creating a DEM from overlapping images'''
+[[Image:stereo_basic.gif|400px|center]]
-* see also the [[Stereo anaglyphs]] wiki page
+There is some old GRASS 5 software in
+: http://grass.osgeo.org/outgoing/grass5/ &rarr; stereo
+which does this job. It awaits integration into GRASS 6+.
+Tutorial: http://grass.osgeo.org/gdp/stereo-grass/index.html
+== GRASS 6 ==
+; Viewing existing data as stereo 3D
+The {{AddonCmd|d.anaglyph|version=6}} addon module provides an easy way to create 3D anaglyphs and stereographs. It uses the {{Cmd|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.
+-----
+=== Anaglyph ===
+<center>
+{|
+| [[Image:Spearfish_anaglyph.png|thumb|400px|Red/cyan anaglyph created with the d.anaglyph module]]
+| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
+| [[Image:Anaglyph_glasses.png|right|150px]]
+|}
+</center>
+-----
+=== Stereogram ===
+{|
+| [[Image:Spearfish_stereogram.jpg|thumb|center|750px|Stereogram with fiducials created with the d.anaglyph module (requires stereoscope viewer)]]
+|-
+| [[Image:USGS_stereoscope.jpg|thumb|center|200px|Stereoscope viewer]]
+|}
+-----
+=== "Free-view" Stereogram ===
+* ''No special viewing equipment needed: just focus into the distance or cross your eyes.''
+* [http://www.jrsdesign.net/cross_parallel_viewing.html Here is a nice how-to-view article]
+* Screenshot: ''(created with the d.anaglyph module)''
+[[Image:Spearfish_freeview_stereogram.png|center]]
+== See also ==
+Visualization:
+* The [[Stereo anaglyphs]] wiki page
+Other approaches:
+* Structure from Motion (SfM): [http://www.lancaster.ac.uk/staff/jamesm/research/sfm.htm 3D surface and DEM construction from images]
+Other software:
+* [https://www.orfeo-toolbox.org/CookBook/Applications/app_StereoFramework.html OTB Stereo Framework]
+* [http://gn.dronacharya.info/CivilDept/Downloads/question_papers/IVsem/GeoInformatics/Unit1.pdf Principles of Stereoscopic Parallax]
+* [https://github.com/NeoGeographyToolkit/StereoPipeline NASA Ames Stereo Pipeline]: a suite of automated geodesy & stereogrammetry tools designed for processing planetary imagery captured from orbiting and landed robotic explorers on other planets
+* [http://www.efoto.eng.uerj.br/en e-Foto] is a free educational digital photogrammetric workstation for Mac, Linux, Windows; GNU GPL
+* [http://hugin.sourceforge.net/ Hugin] (stiches images together into panoramas) and [https://wiki.panotools.org/Cpfind cpfind tools] (finds control points in overlapping image pairs)
 [[Category: FAQ]]
+[[Category:Image processing]]
+[[Category:Visualization]]
+[[Category:NVIZ]]

Stereoscopic analysis: Difference between revisions

Latest revision as of 10:10, 9 August 2020

Contents

GRASS 5