[FoRK] question for you guys

Gary Stock gstock at nexcerpt.com
Sat Jun 25 06:10:15 PDT 2011

I wonder whether a United States dollar bill might be sufficiently 
"common" -- if not counterfeited.

Any chance the top (or at least the diameter of the rim) of a Coca Cola 
can is identical everywhere?

That's a more ubiquitous object than credit cards or paper -- at least, 
in the middle of nowhere ;-)

Beyond that, can the transmission of these vital photos wait until a 
cloudless day with a full moon?

You won't always have smoked glass to use, so the diameter of the Sun, 
though stable, is problematic.

But, the reference object must be in the same location/plane (possibly 
parallax-corrected)... right?


On 6/25/11 7:37 AM, Damien Morton wrote:
> You are in the middle of nowhere, in any country in the world, but not so
> remote that you dont have internet.
> You want to send photos of a large, flat object to a service which will then
> measure that object.
> To measure the object accurately, there need to be some rectangular or
> circular reference objects of known size in the photos.
> Ideally some coded photogrammetry targets should be printed and used.
> If you dont have a printer, then A4 or US Letter paper sheets can be used.
> These are pretty much the ideal size.
> No paper, then credit cards can be used. Smaller than ideal, a problems with
> the printing on them, but usable.
> Can anyone think of any other common flat rectangular or circular objects
> that have standardised sizes globally?
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