[GRASS-user] Re: anaglyph for GRASS?

[Michael Barton]

Hi Markus,

Thanks much. I saw that.

What we are looking for are some guidelines or script to create  
anaglyphs within GRASS. We want to use the 3D perspective of an  
anaglyph to map stream terraces. This is commonly done in  
geomorphology using paper stereo pairs and glasses. With an anaglyph,  
we can move this process into the GIS environment for greater  
accuracy. We have stereo aerial photos of many areas that we can put  
into an xy location and map terraces. We can also use Terra ASTER  
imagery. At 15m resolution, all Terra ASTER comes with a forward and  
backward facing band 3.

I assume that we'd need to set a color table to grade through red and  
blue (or cyan) for each image and then use r.blend. I thought I  
remembered that someone had done this in the past. But maybe I was  
remembering the stuff on the wiki page. I'll go ahead and forward this  
to the list to see what comes up.

Best
Michael
______________________________
C. Michael Barton
Director, Center for Social Dynamics & Complexity
Professor of Anthropology, School of Human Evolution & Social Change
Arizona State University
Tempe, AZ  85287-2402
USA

voice: 	480-965-6262; fax: 480-965-7671
www: 	http://csdc.asu.edu, http://shesc.asu.edu
		http://www.public.asu.edu/~cmbarton

On Nov 24, 2009, at 2:36 AM, Markus Neteler wrote:

> Michael,
>
> please take a look here:
>
> http://grass.osgeo.org/wiki/Stereo_anaglyphs
>
> cheers
> Markus
>
> On Mon, Nov 23, 2009 at 5:58 PM, Michael Barton <Michael.Barton at asu.edu 
> > wrote:
>> Markus,
>> I remember discussion of an anaglyph script for GRASS but we can't  
>> find it.
>> Do you know of such a beast? We should be able to turn Terra ASTER  
>> band 3
>> and band 3b into great 15m resolution anaglyphs.
>> Thanks
>> Michael
>> ______________________________
>> C. Michael Barton
>> Director, Center for Social Dynamics & Complexity
>> Professor of Anthropology, School of Human Evolution & Social Change
>> Arizona State University
>> Tempe, AZ  85287-2402
>> USA
>> voice:  480-965-6262; fax: 480-965-7671
>> www:  http://csdc.asu.edu, http://shesc.asu.edu
>> http://www.public.asu.edu/~cmbarton
>>