 | | 2D positioning ??? —Michael Yates
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| | | I realise this is an open ended question but I will ask anyhow. We (as I have mentioned a number of times, probably maing in RCX newsgroup) have 6 RCX's that we wish to make into a demo for school kids. Ideally that demo would involve some sort of (...) (25 years ago, 8-Dec-99, to lugnet.robotics)
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| | | | | Re: 2D positioning ??? —Michael Gasperi
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| | | | | michael yates <michael.yates@stude...le.edu.au> wrote in message news:FMFAKz.9uE@lugnet.com... (...) I realize this might be a lot simpler than you are looking for, but I'll offer it up anyway. Over 50 years ago a guy named W. Grey Walter built (...) (25 years ago, 8-Dec-99, to lugnet.robotics)
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| | | | | Re: 2D positioning ??? —Tim Gion
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| | | | | (...) I plan to try this myself once I test the robot controllers in simulation. In "Reactive Visual Control of Multiple Non-Holonomic Robotics Agents," the CMU team says that they use a frame grabber with frame rate transfer from a 3CCD camera. A (...) (25 years ago, 9-Dec-99, to lugnet.robotics)
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| | | | | Re: 2D positioning ??? —Brent Rager
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| | | | | (...) task (...) With an overhead camera you may find it easiest to use the IR port on the RCX to beacon the robots position. With the coordinating PC sending out a poll message addressed to individual robots. Most video see IR signals very well and (...) (25 years ago, 10-Dec-99, to lugnet.robotics)
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| | | | | | | Re: 2D positioning ??? —David Paule
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| | | | | | | (...) the (...) You can use a horizontally-polarized fill light in one direction and a vertically-polarized fill light in 'tother. Then the strength and the amount of one vs. the other will locate you. You can also use differently polarized beacons, (...) (25 years ago, 10-Dec-99, to lugnet.robotics)
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| | | | | | | Re: 2D positioning ??? —Tim Gion
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| | | | | | (...) In RoboCup, each robot has a ping-pong ball mounted on top. I found one example of how to find orientation from one of the Cornell teams. They mounted an additional marker in a fixed offset from the ping-pong ball. When they did the image (...) (25 years ago, 10-Dec-99, to lugnet.robotics)
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| | | | | Re: 2D positioning ??? —Vlad Dumitrescu
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| | | | (...) Hi! I have tried a method for 2D positioning, and it works if you don't need a high precision. It might be refined for higher precision, but I didn't try it. It is a variant of the gradient fill pattern. There are several ways to do it. The (...) (25 years ago, 10-Dec-99, to lugnet.robotics)
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| | | | | | Re: 2D positioning ??? —Vlad Dumitrescu
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| | | | Some more info at (URL) (25 years ago, 10-Dec-99, to lugnet.robotics)
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