Jamie, I am not familiar with panotools. I am willing to give it a try though!
Shaun On Thu, Apr 10, 2008 at 1:16 PM, Jamie Adams <[EMAIL PROTECTED]> wrote: > Would it be possible to calculate these parameters with a panoramic > creation package like panotools? > > http://wiki.panotools.org/Lens_correction_model > > It calculates a value for field of view, but I didn't notice an actual > focal length parameter. Maybe this is easy to associate? > > One benefit is that you are calculating using image overlap, which may be > easier than trying to reference to a recent photo. > > -Jamie > > > On Thu, Apr 10, 2008 at 9:53 AM, Vincent Bain <[EMAIL PROTECTED]> wrote: > > > May it be a stupid suggestion, but did you try to contact anyone at the > > USGS ? perhaps they maintain data from these old times... (here in > > France IGN is always helpful, and can provide answers to such historical > > requests) > > > > Vincent. > > > > Le jeudi 10 avril 2008 à 18:33 +0200, Markus Neteler a écrit : > > > On Thu, Apr 10, 2008 at 5:29 PM, Shaun & Melissa Busler > > > <[EMAIL PROTECTED]> wrote: > > > > Unfortunately, the focal length of the camera is not on the photo > > border. > > > > The photo must be too old. Do you have any recommendations on what > > focal > > > > length I should try? It was taken in 1939 for the USDA Agricultural > > > > Adjustment Administration. > > > > > > You could try 150mm or 305mm. In fact, i.ortho.photo is quite robust, > > > just try and hope that it converges. > > > > > > (and/or: Maybe someone on the PROJ4 list knows.) > > > > > > Markus > > > _______________________________________________ > > > grass-user mailing list > > > grass-user@lists.osgeo.org > > > http://lists.osgeo.org/mailman/listinfo/grass-user > > > > > > > _______________________________________________ > > grass-user mailing list > > grass-user@lists.osgeo.org > > http://lists.osgeo.org/mailman/listinfo/grass-user > > > >
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