Subject:
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Re: localization (was re: GPS)
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Newsgroups:
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lugnet.robotics
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Date:
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Thu, 12 Jan 2006 13:35:03 GMT
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Viewed:
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2006 times
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On 1/11/06, John Barnes wrote:
>
> I had been working on a project to build a cheap warehouse navigation system
> for
> the company I used to work for until it closed its doors on Dec 23rd.
>
> The idea I had had, and intend on persuing is a cheap(ish) optical scheme
> whereby you hang little barcode placards around the environment. Then a cheap
> line scan camera built around a TAOS linear array and a cheap 12.5mm lens can
> be
> used to build a barcode reader which not only grabs the placard id but also
> gets
> placard range based on perceived size of the barcode. (Unless someone out
> there
> knows of a cheap barcode scanner which returns size as well as code value.) In
> the warehouse application, trucks were going to drive by such things and get a
> local position update each time the saw one. The NXT application may have to
> put
> such a device on a scanning platform.
>
> If I can make it work, cheaply enough, you'll hear about it here later in the
> year.
Have you checked out the ARTag software? (Agumented Reality Tagging)
I downloaded the Rev1 demo (2 is out now) and it was really amazing,
even using a super-cheap web-cam:
http://www.cv.iit.nrc.ca/research/ar/artag/
The sdk provides the means to identify their graphical tags, as well
as the camera's orientation (they call it pose) relative to the tag
marker.
-Rob A>
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Message is in Reply To:
 | | Re: localization (was re: GPS)
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| (...) I have tried all sorts of tricks with ultrasonic stuff, you're right :) There are a couple of different schemes for the ultrasonic beacon type things. You can have ones which are triggered from the 'bot via radio or IR. I've tried the IR one. (...) (19 years ago, 11-Jan-06, to lugnet.robotics)
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