[FoRK] coffee drone
Stephen D. Williams
sdw at lig.net
Fri Jun 22 12:22:28 PDT 2012
On 6/22/12 12:12 PM, Damien Morton wrote:
> On Fri, Jun 22, 2012 at 3:01 PM, Stephen D. Williams<sdw at lig.net> wrote:
>> On 6/22/12 11:32 AM, Damien Morton wrote:
>>> I've been thinking about an autonomous personal cameraman.
>> Machine vision, optionally paired with radial range finder like a VOR/DME
>> would solve this easily. The latter could be done visually with an IR
>> beacon beany. Machine vision and human pose recognition can easily track a
>> walking human now.
> Machine vision isn't quite reliable enough for this, and the beacons that
> exist require expensive IR vision gear to see.
If you were to wear a 1 ft. square target on your back and a similar one on your head, it would be trivial to track visually.
Should be doable without that, but trivial with it. Code's been out there for recognition / tracking for at least 4 years. You'd
probably want a zoom camera paired with wide angle to get good distance, but pretty trivial. Tracking stability would be based on
visual flow, corner search, and movement prediction / motion estimation.
Get me a quad or hex copter that can carry a good smart phone, and I'll implement something. In a few months when I have time. But
they'll probably be selling by then. Already the open source autopilot is rivaling defense projects in some sense.
I plan to visit these guys shortly:
Tracking in the open isn't too hard. The difficult level is environment understanding and planning so that it wouldn't run into
trees, buildings, tunnels, other quadracopters, etc. I.e. a full self-driving skycopter / skybot.
> There exist laser beacons, but again, the vision systems needed for those
> are pretty sophisticated.
> There are laser tracking devices that lock onto retroreflectors, and these
> are used for sub-mm level surveying work. Expensive.
> Of course, if your drone has to carry around significant machine vision
> grunt, that puts a dent in your energy budget.
> A hybrid system, using GPS and vision might be made to work, I suppose.
>> Clearly, this is needed for God-mode video capture (back country mountain
>> biking etc.) and smite-thee-bully protection. Allow manual switchover to
>> your guardian angel buddies for video game strafing as needed, upon panic
> It would be cool to be able to point at somone and pull an imaginary
> trigger to command your Personal Aerial Guardian to turd-bomb that person
> seconds later.
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