Stereo to photogrammetry

[P3D Colin Moyer <cmoyer@xxxxxxx>]

Hello there,

        I am somewhat new to this list and thought I would ask people out
there for some help.  I was wondering if anyone knew if there was a simple
method to "do photogrammetry" using a relatively standard stereo-photo set
up.

        My reason for asking is that I am an archaeologist and am
interested in creating a visual and metrical database of Neanderthal stone
tools while I am excavating at a site in France this summer.  I will likely
be using an SLR with a sliding rail for the close-ups of the artefacts,
this will give me good control over the stereo-base (which is necessary for
photogrammetry), and it will give me a good sized (full-frame)
negative/slide.  The principal is essentially the same as going from aerial
photography --> elevation maps, which is done all the time.  But I will not
be using fancy aerial cameras (which have build in index marks for
measurement, and corrected lenses), nor can I afford "terrestrial
photogrammetric" systems.

Questions:

Is there an easy way to put index marks on your negative/slide without
wrecking my camera?  Do ready made attachments for such things exist?

Will a standard 50mm or other standard lense cause distortion, making
measurement impossible? or can such distortion, if it exists, be corrected
for?

Is there relatively cheap software to make digital elevation models from
stereo-pairs? (The only one I have seen cost over 10,000 dollars and
required a Silicon Graphics workstation, which I have no real access to at
the moment).

In general, does anyone on the list do photogrammetry?

Does anyone do archaeology?

        Colin Moyer

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