I'd be surprised if you can't buy or download for free some software that will make a wireframe from the photo, and rotate it on a grid in 3D. You only need a couple of reference measurements then.
-- Bob > -----Original Message----- > From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On > Behalf Of Lasse Karlsson > Sent: 30 January 2008 09:37 > To: Pentax-Discuss Mail List > Subject: For the experts. Determening distances in a photograph. > > Hi all, > > I'm doing some research on the earliest constructions of my hometown, > Mariehamn. > > At the link below there is one very early photograph of the > town, from > around 1870. In it there are still a number of houses, farms, > of the village > where the town was founded in 1861. I'm trying to establish the exact > location of these constructions, so that I can draw them on a > current map or > walk there and say: This is the south-west corner of that > house, this is... > etc.. > > (The photograph, originally in B&W, is a "working copy" of > mine, where I've > added a few things in color just to help me see various parts > more clearly.) > > The constructions which I'm interested in, are to the left, > on the hill, as > well as on the slope towards the photographer. > > I know, or will be able to pin down the exact locations of > some houses, or > corners thereof. Some of these have been marked with a blue "x". > > Now, I believe that it should be possible, to actually > determine the exact > locations of these buildings just by going by this > photograph. (Let's say it > was shot with a lens equalling 50mm on 35mm film camera.) > > Am I correct or mistaken? > > If it's possible, can anybody help me out in how to go about > doing it, or do > I have to redo my geometry classes? > > http://photo.net/photodb/photo?photo_id=6894839&size=lg > > > Thanks for your comments, > Lasse. > > > -- > PDML Pentax-Discuss Mail List > PDML@pdml.net > http://pdml.net/mailman/listinfo/pdml_pdml.net > to UNSUBSCRIBE from the PDML, please visit the link directly > above and follow the directions. > > -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.
