Aerial Photogrammetry

[Keven Bennett]

        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?
        Keven

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.
>
> --Rob
>
> 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
> >
> >
> >