Just got back from the Curiosity landing party at the Museum of Flight...woo hoo!!!
Several NASA/JPL folks were there, so I asked if there was info on how Curiosity does obstacle avoidance -- there is, on the JPL website. Will post when I find it... Briefly, they have a laser rangefinder, but also do visual object detection. However, they have a map accurate down to *5cm*, and Curiosity can easily go over objects much larger than that, which renders obstacle *detection* somewhat moot. Also no small children running into its path...
There should be more pictures now, from the second Odyssey pass. Also should be another press conference. Haven't found that online yet.
-- Pat