[Geotiff] Image processing project - getting started

[Kyle Shannon]

Justin,
I would look at GDAL, gdal.org.  There are a few things that may be of use
for you.  There are several command line utilities that may be of use and
good a good api for C/C++, python and other languages.  The documentation is
good too.  Read through the website and see if it works for you.

kss

# ============================
Kyle Shannon
Physical Science Technician
RMRS Fire Sciences Lab
Fire, Fuels & Smoke - RWU 4405
5775 Highway 10 W.
Missoula, MT 59808
(406)829-6954
kshannon at fs.fed.us
# ============================


On Mon, Nov 8, 2010 at 10:32 AM, Justin Close <justinclose at comcast.net>wrote:

> Hello all.  I am new to the list and I am looking for some guidance and
> pointers.
>
> I am a computer science student working on a project involving
> manipulation of a large number of images.  The images are aerial shots
> of the cities at night (taken from space, actually).  We are taking the
> RAW camera images, saving to TIFF, using the date/time stamp of the
> image to generally locate what/where the image is of, then manually
> morphing the image to scale/rotate/position it accurately to reality.
> Reality in this case is Google Earth; the images will eventually be
> served up as Google Earth layers.
>
> The CS part of this is how to automate this process.  We wanted to embed
> the lat/long information we got back into the image, and GeoTIFF seems
> to be the perfect format for this.  Low and behold, it can also contain
> morphing information too, it seems.  And there are all these nifty tools
> out there that can do this manipulation, apparently.  But for me, who is
> just starting out with it all, it seems a bit overwhelming; I don't know
> where to start in order to find out what tools I should be using.
> Libgeotiff seems like it has a bunch of things that we (it is a team
> project) should be using; we don't want to reinvent the wheel (not
> completely anyway - a bit of learning by doing can be good, though).
>
> So far the images have just been processed within GE itself, using its
> Image overlay features.  But that is tedious and awkward.  First step is
> perhaps a better manual tool that can achieve the same results (an image
> that is rotated and scaled to fit GE accurately).  A next step is to try
> and get those manual operations automated so that a large number of
> images can be done quickly, without intervention.
>
> For the tagging (approximate lat/long) I was thinking of something to
> read the TIFF tag data, interface with the database that will yield the
> lat/long of the image, and then writing that back to the TIFF (now that
> I know something about GeoTIFF, probably as a GeoTIFF now instead of
> TIFF).  It looks like listgeo/geotifcp are the tools I would want to be
> using for doing that.
>
> So, I am just asking for some guidance from folks who have used these
> tools and could comment on what might work well for what I am looking
> for.  If you want more details, let me know.
>
> Thanks,
> Justin
>
>
>
>
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