Georeferencing and rectify

[Benjamin Ducke]

the georeferencing stuff for GRASS GIS is in the process of updating 
right now. Lots of new features are going into it, 4-points referencing,
setting out control points along lines ...
plus a new, nice GUI (see GRASS developers mailing list for recent
postings).

It would certainly be nice to have a stand-alone solution without the
full complexity of GRASS, too. But I don't see who would be able to
put the time and effort it takes into doing that.

Benjamin

Luca Bezzi wrote:
> Srafano wrote:
> 
> 
>>Luca,
> 
> 
> Hi Stefano,
> 
> 
>>I'm not using rectifying software on a daily basis, but I can't remember
>>any other piece of free software for doing rectifying and georeferencing
> 
> 
> Maybe some parts of e-foto can be useful
> 
> 
>>(photomosaic, that ugly term.. :-)
> 
> 
> Yes, but what I really need is a "fotopiano" (photomosaic?), cause if I want to
> rectify and georeference a single photo (from airplane or satellite) or a scanned
> map I can use GRASS without problems. 
> I was thinking about an auto-equalizing filter too (maybe simpler to develop in
> Python?), it will be very usefull if you want a photomosaic  
> 
> 
>>with the exception of Walldrawer,
>>which doesn't really does rectyfying but just low-quality stretching of
>>the images.
> 
> 
> I already tried Walldrawer, but it is not really what I am looking for, I don't
> think it is very useful for me...
> 
> 
>>However, the GRASS commands use knows algorhytms to do their work (and
>>they're GPL'ed), so I think it wouldn't be too difficult to build an
>>application with a simple GUI that does just rectifying and
>>georeferencing based upon a known working algorhythm
> 
> 
> I don't know, I would like to speake with Markus about this... I am not sure that
> with the algorhytms GRASS has now, it is possible to rectify an image with only 4
> points (probably there are no problems to georeference it). I mean that maybe you
> can do it, but it will be not so accurate.
> 
> 
>>(just like Rollei MSR, or MicroMap, for those who know them). 
> 
> 
> I was thinking about Monobild as well (maybe the faster software, for such a work)
> 
> 
>>Obviously, this means time to spend on such a project, but we can put our little 
>>efforts together
>>at least.
> 
> 
> Sure, I would like to... I think that this is one of the main problems if you
> want to work in "field-archaeology" with only OS/FS software: you can do it, bu
> it is very slow...
> 
> 
>>Please let us know what you all think about this. Thank you,
> 
> 
> Stefano
> 
> Thank you for the answer, bye
> 
> Luca Bezzi
> 
> Arc-Team
> Archaeology & Free Software
> http://www.arc-team.com/
> luca.bezzi@arc-team.com
> 
> 
> 
> 
> 

-- 
Benjamin Ducke, M.A.
Archäoinformatik
(Archaeoinformation Science)
Institut für Ur- und Frühgeschichte
(Inst. of Prehistoric and Historic Archaeology)
Christian-Albrechts-Universität zu Kiel
Johanna-Mestorf-Straße 2-6
D 24098 Kiel
Germany

Tel.: ++49 (0)431 880-3378 / -3379
Fax : ++49 (0)431 880-7300
www.uni-kiel.de/ufg