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with the sharp units you get reasonable distance accuracy but no directional information
on the down side, with this method, you only detect objects that exist at the same height as your laser line.
the links Admin shows are not using stereo vision.
If you put the sharp IR on a servo, you know both the angle and the distance away.
hmmm sonar sucks (~50 degree range) dont use it for precision stuff
can you cheat with colored beacons?
or maybe do some 2D to 3D image modeling:example video here:http://www.youtube.com/watch?v=VuoljANz4EA&eurldetails here:http://www.cmu.edu/PR/releases06/060613_3d.htmland the source code here:http://www.cs.cmu.edu/~dhoiem/projects/popup/