Passive Optical Range Finder
Passive Optical Range Finder
(OP)
I'm building an augmented reality training system (similar to the virtual yellow first-down marker in football). In order to precisely generate realistic virtual graphics I need to know the distance between the camera and the real object for every pixel in the camera's field of view. I am looking for something that can calculate distances in this matter for ranges between 100m to 4000m. I have looked into stereo vision which could solve the problem but adds its own rather large footprint and problems to the system (tightly calibrated cameras along a large baseline). Any suggestions or creative ideas/solutions would be helpful.
My best guess for a solution came after playing around with our camera I noticed that focus was a potential way to determine distance (although difficult at such long ranges). Unfortunately I know next to nothing about optics and also wanted to know if there was a way to determine distance to each pixel not with a long baseline, but with a long focal length?
My best guess for a solution came after playing around with our camera I noticed that focus was a potential way to determine distance (although difficult at such long ranges). Unfortunately I know next to nothing about optics and also wanted to know if there was a way to determine distance to each pixel not with a long baseline, but with a long focal length?





RE: Passive Optical Range Finder
A more practical, but expensive, solution might be to get a laser rangefinder such as the Riegl LPM-2K, which is accurate to 2 inches up to 2500m. If you scan your area from the side, you can cover the entire 4000m depth to a width of over 2000.
http://www.rieglusa.com/new-site/lpm_ptm/e_lpm-2k.htm
At the other end of the cost spectrum is the Leica Disto laser rangefinders, which all run under $800, but they're limited to about 200m range, with no scanning capability:
http://www.disto.com/scripts/wgate/ZDISTOSHOW!?~language=EN&ostore=DISTO_USEN&selected_area=0000000002&~okcode=STARTITE&ZZCOUNTRY=US&~http_use_compression=&~http_compress_level=
TTFN
RE: Passive Optical Range Finder
RE: Passive Optical Range Finder
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