kbenet at u.washington.edu
Fri Apr 14 15:45:27 PDT 2000
Thanks. I talked to Nick today and said you were a major resource for
me to tap on these issues. I guess it takes time to learn just what it is you
know. 'GIS Analyst' is sort of vague on the knowledge/content department.
I'll email him Monday and see what he has and I have to come Monday to
campus so can I pick your brain in the afternoon?
Robert A Norheim wrote:
> Keven --
> If you haven't heard from him already, I suggest you contact Steve
> Reutebuch (sreutebu at u). He teaches the Photogrammetry class here in
> Forestry and has just arranged for some seats on campus for the ERDAS
> photogrammetry module.
> Robert A. Norheim norheim at u.washington.edu
> GIS Analyst http://staff.washington.edu/norheim/
> USGS FRESC Cascadia Field Station 206 543-9138
> College of Forest Resources 206 543-3254 (Fax)
> University of Washington
> Seattle, WA 98195-2100
> "Time spent climbing mountains will not be deducted from your life"
> On Fri, 14 Apr 2000, Keven Bennett wrote:
> > Hello,
> > I am developing a methodology for ground truthing geodata for
> > ONRC to assist an interagency Spartina management group at Willapa bay.
> > I can obtain 1:12k color aerial photography for this area that is fairly
> > recent.
> > I have several questions, and if anyone can point me in the
> > right direction, I would appreciate it greatly!
> > What is the size of the smallest feature that can be expected to
> > be seen in these stereophoto sets? The provider describes them as
> > 'exceptional' (yes, subjective, but...) and any kind of ballpark
> > approximation would help.
> > In preperation for converting to digital data, they will need to
> > be scanned. I have heard that photo quality scanning is possible with
> > the newest true color scanners, and I am also postive this process will
> > create potentially huge files (not a problem--we may work with these
> > serially). What issues do I need to address here? What output image
> > format is best for the follow up geoprocessing work?
> > We would like to resample the image and have available ERDAS
> > Imagine software for the image processing and registration to already
> > existing geodata. Should we resample the image with a cell size the
> > same as the smallest visible feature (we want to be able to retain the
> > data at the largest possible scale)? What issues do we need to address
> > here?
> > Keven Bennett
> > ONRC GIS
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