See the Obsession episode from season 2 of NUMB3RS. I consulted with the producers on that episode to develop a way to use shadows in photographs to determine the location, given the date and time of the photo.
Fred Sawyer On Fri, Jul 8, 2011 at 4:40 PM, Brent <[email protected]> wrote: > Hello again; > > I was looking at an aerial photograph of a piece of property with a > surveyor. > > We started to discuss when the photo was taken. > We could tell by the brown vegetation that it was probably late summer here > in So. California. > > I also noticed a shadow cast from a telephone pole. > > I think by measuring the height of the pole, the length and angle of the > shadow I might be able to figure out what day of the year it was taken and > the time. I would have to know the latitude and longitude to do this. I knew > the top of the photo was north. > > I started to think if I only knew the day and time the photo was taken I > might be able to determine the latitude and longitude. > > So I wonder if police ever use shadows in their investigations? > > For example, a video of a terrorist holding a hostage. The hostage holding > a newspaper showing the date. They are outside with visible shadows being > cast. Could we figure out where they are holding the hostage? > > How about if the police say I ran a Redlight at 3pm on a certain date and > they have a photograph to prove it. > Maybe if they were wrong, I could prove my innocence by the shadows cast by > my car. > > So guess the big question is, does anyone make practical use of shadows? > > thanks again; > brent > > ------------------------------**--------------------- > https://lists.uni-koeln.de/**mailman/listinfo/sundial<https://lists.uni-koeln.de/mailman/listinfo/sundial> > >
--------------------------------------------------- https://lists.uni-koeln.de/mailman/listinfo/sundial
