cdshaw@cs.UAlberta.CA (Chris Shaw) (05/26/90)
I was wondering if anyone out there knows anything about short-range ranging. Essentially, I would like to know if there are standard techniques for getting scanned data that tells you distances of surfaces that are between 1 to 100 feet away. For example, if my ranging device is in a room full of tables and chairs, I'd like the device to tell me the range of the scene for each pixel. Some people I've talked to preferred the passive approach, where you have stereo TV cameras as the ranging device. To get the range, you do some kind of trivial common-object finding to find the same object in both pictures, and use trig to find their distance using the separation of cameras and the separation of the objects in the two images. The other approach is active, where you scan a laser or sound beam and collect the echos. Does anybody have any info on working (perhaps experimental) systems? Is there a better newsgroup than this? -- Chris Shaw University of Alberta cdshaw@cs.UAlberta.ca Now with new, minty Internet flavour! CatchPhrase: Bogus as HELL !