[Freegis-list] free gis for counting trees

[landconsult@freenet.de]

If I understood you, Eduardo right, you need a image processing software 
to detect the crown of single trees in your infrared image.
Well, if Grass 5.7 can relly do this, please let me know, because I 
doubt, that there is a free image processing system to delineate tree 
crowns ....
e.cognition is a commercial software package that has been developed to 
classify images using object and knowledge based algorithms. There is a 
derivate of it called forester,  co-developed by the Forstry Commision 
in the UK, but the standard version of e.cognition and the forester are 
too expensive (unfortunately more than some 20K Euros .... but I 
wouldn´t mention this commercial software here, if  the idea behind it 
wouldn´t be really good and convincing ...)
Nevertheless e.cognition is offering a trial version (I think it is 
limited to a certain size of the files to be processed), and maybe it is 
good enough to help you with your problem.
http://www.definiens-imaging.com/down/trial.htm

Markus


Paolo Cavallini schrieb:

>-----BEGIN PGP SIGNED MESSAGE-----
>Hash: SHA1
>
>grass 5.7
>pc
>
>At 21:07, mercoledì 29 settembre 2004, Eduardo Patto Kanegae has probably 
>written:
>  
>
>>Hi all,
>>
>>I need to do some tests using high resolution aero-infrared photographies
>>to count the number of trees for a given eucalyptus forest area.
>>
>>The hard thing is how to count trees when they are not so young? I mean,
>>there are some case where 2 or 3 trees sounds like 1 only tree for various
>>classification algorithms...
>>
>>Can anybody recommend me a free gis that could do that?
>>
>>thanks in advance.
>>
>>Eduardo Patto Kanegae
>>http://www.webmapit.com.br
>>UIN: 303747254
>>
>>Treinamento em UMN MapServer -
>>http://www.webmapit.com.br/ptbr/?menuoption=mapserver Fórum MapServer
>>Brasil - http://mapserver.cttmar.univali.br/forum
>>
>>***Fim da Mensagem / End of Message ***
>>
>>
>>
>>
>>
>>_______________________________________________
>>Freegis-list mailing list
>>Freegis-list at intevation.de
>>https://intevation.de/mailman/listinfo/freegis-list
>>    
>>
>
>- -- 
>Paolo Cavallini
>cavallini at faunalia.it            www.faunalia.it
>Piazza Garibaldi 5 - 56025 Pontedera (PI), Italy   Tel: (+39)348-3801953
>GPG key @: hkp://wwwkeys.pgp.net http://www.pgp.net/wwwkeys.html 
>https://www.biglumber.com
>Only free software: www.gnu.org / www.linux.org
>-----BEGIN PGP SIGNATURE-----
>Version: GnuPG v1.2.4 (GNU/Linux)
>
>iD8DBQFBW5hh/NedwLUzIr4RAqaFAKCW9FrHXdM8SvcyhlNYGXyIDq6UrwCgtfi9
>JM7jzslMzVccxKh0+oF3G7Q=
>=2c7v
>-----END PGP SIGNATURE-----
>
>_______________________________________________
>Freegis-list mailing list
>Freegis-list at intevation.de
>https://intevation.de/mailman/listinfo/freegis-list
>
>
>  
>

-------------- next part --------------
An HTML attachment was scrubbed...
URL: http://www.intevation.de/pipermail/freegis-list/attachments/20040930/aa6484e3/attachment.html