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| Subject: | Re: [gislist] assessing coastal buiding change |
| Date: |
01/11/2006 06:10:01 AM |
| From: |
=?ISO-8859-1?Q?Marcello_San=F2?= |
|
|
High resolution satellite images are typically from IKONOS or QUICKBIRD =
(the ones used by Google Earth) with a resolution of about 1 m, and a =
cost of around 20 US $ / km2, but they are really recent images =
(2000-...). I don't think there had been high resolution satellites that =
captured images in the early 80s.
You can take a look a the following link of NOAA:
http://www.csc.noaa.gov/crs/rs_apps/sensors/
---------------------------------------
Marcello San=F2
Ocean & Coastal Research Group
Universidad de Cantabria
E.T.S.I. de Caminos, Canales y Puertos
Avda. de los Castros s/n
39005 Santander
Spain
Phone: 34-942-201810
Fax : 34-942-201860
http://www.gioc.unican.es
---------------------------------------
O'Donnell, Vicki wrote:
> Hello all,
> =
> I have a query re assessing coastal 'building' change using aerial imager=
y.
> We are trying to assess a building boom along the coast in Ireland (to
> 5-10km inland) over the last 20-30 years. The area is covered by aerial
> photos taken over a series of years, this would be perfect but the coast
> would run to hundreds of thousands to purchase licences for the imagery so
> its not an option. Neither really are historic maps as buildings are not
> inserted in 1900s rasters in the same shape/colour so an algorithm will n=
ot
> pick up the old buildings (and mapping from our historic rasters will not=
be
> of much use)
> =
> What we need perhaps is highest resolution satellite imagery to id
> buildings. We would need one coverage from as far back as possible (the 8=
0s
> if possible) and one more recent set of images. Even if clusters of build=
ing
> could be identified that would help.
> =
> Has anyone carried out this type of work before? Has anyone got a
> suggestion? Data types are obviosuly different in Ireland (scales, time
> series, cost etc..) and we have looked at using the data here but don't
> think its feasible, thus we are hoping satellites could help.
> =
> Thanks in advance,
> =
> Vicki
> =
> http://cmrc.ucc.ie
> =
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> =
> _________________________________
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-- =
---------------------------------------
Marcello San=F2
Ocean & Coastal Research Group
Universidad de Cantabria
E.T.S.I. de Caminos, Canales y Puertos
Avda. de los Castros s/n
39005 Santander
Spain
Phone: 34-942-201810
Fax : 34-942-201860
http://www.gioc.unican.es
---------------------------------------
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