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 | | Re: Working motorized focus for Vision Command
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| (...) That would sure help make the image processing faster, but techniques do exist for image registration (e.g. (URL) This is often required for MRI or electron microsope images since the movement of the apparatus affects the image scale, skew and (...) (23 years ago, 19-Dec-02, to lugnet.robotics)
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| | Re: marble rail
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| Nice job, Chris! much more impressive than my seesaw... ((URL) you coordinate marble position and rail movement? If so, how ? A video clip and DAT files would be very appreciated ;o) Philo (24 years ago, 12-Dec-01, to lugnet.robotics)
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| | Re: Working motorized focus for Vision Command
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| (...) Well, I'm not an expert - but I imagine it should be possible to produce a measure of how sharp the image is. For example by adding up all the differences between one pixel and it's neighbours. In a sharp image, you'd expect a lot of nice high (...) (23 years ago, 18-Dec-02, to lugnet.robotics)
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| | Re: wireless X10 cameras - any good?
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| (...) The video works reasonably well where the lighting is good. I've never been to thrilled with the audio. You will need a video capture device in order to get the signal into the PC (which I see you have after reading the rest of your message). (...) (24 years ago, 5-Dec-01, to lugnet.robotics)
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| | Re: flame sensor
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| (...) Lego actually make an 'official' temperature sensor. I guess that in combination with the light sensor, you'd be able to detect a candle flame. The biggest problem may be how to get the temp sensor close enough to the flame to unambiguously (...) (23 years ago, 23-Dec-02, to lugnet.robotics)
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| | wireless X10 cameras - any good?
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| I hope this isn't too off topic, but has anybody actually bought and tried out these wireless X10 cameras that are advertised all over the web? I'm thinking of using one in a Lego mobile robot. I have an Intel webcam that has a composite video input (...) (24 years ago, 5-Dec-01, to lugnet.robotics)
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| | Re: wireless X10 cameras - any good?
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| (...) out (...) I bought one of these with the AA battery pack for under $100 and mounted it with rubber bands on the radio control Lego car #5600. I used a small color composite monitor on the receiver. Then I steered it around our office building (...) (24 years ago, 5-Dec-01, to lugnet.robotics)
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| | Re: Working motorized focus for Vision Command
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| (...) Yes - that'll also make the algorithm run faster. (...) I'm sure it's possible. What I'm not sure about is whether the kind of naive algorithm that I could come up with after just a few minutes thought would be effective. It might take some (...) (23 years ago, 18-Dec-02, to lugnet.robotics)
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| | Re: Books on Vision Command and Image Processing
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| If Vision Command works like Lego RoboLab's image processing software, then look at: (URL) RoboLab software can use the Vision Command hardware. For more on RoboLab, look at: (URL) general image processing, look at: (URL) Vision (URL) Vision Maybe (...) (23 years ago, 22-Nov-02, to lugnet.robotics.vc)
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| | Re: Working motorized focus for Vision Command
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| Sorry for the late reply ... consumer still cameras (even cheap ones) have auto-focus capability, so the technology has to be within reach of the RCX. I did a search on Google and found the following definitions: Active auto-focus is where the (...) (23 years ago, 19-Dec-02, to lugnet.robotics)
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| | RE: Shuffle bot
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| From watching the son of whyachi and looking at the specs page i think: 1. the concept that you are looking at is different from the actual locomotion of SOW 2. it isn't going ot be easy to reproduce this in Lego 3. I found something else to work on (...) (23 years ago, 14-Dec-02, to lugnet.robotics)
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| | RE: Camera IR and the RCX
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| (...) Yes, I can confirm that almost any IR source will confise the data coming to the IR receiver of the RCX. That includes stuff like PalmPilots, Win PDAs, TV remote controls, IR link watches, video-cameras, and hand-held autofocus cameras. Think (...) (24 years ago, 20-Nov-01, to lugnet.robotics)
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| | Re: Robolab - lejOS communication
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| (...) Mario, Lejos supports communication using the original firmware opcodes via the Serial class, but, apart from program download, this is designed for executing opcodes, not downloading data. F7Handler and F7DeliveryHandler are part of and (...) (23 years ago, 1-Dec-02, to lugnet.robotics.rcx, lugnet.robotics, lugnet.robotics.rcx.java, lugnet.robotics.rcx.robolab)
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| | Books on Vision Command and Image Processing
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| Hi, Does anybody know of any books on Vision Command at all. Especially any books at the level of David Baum's or Bagnall's on Mindstorms. I am really interested in detailed image processing with Vision Command. Thanks, Jon (23 years ago, 21-Nov-02, to lugnet.robotics)
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| | Re: Does RL2.5 have array support?
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| Miles: On the question of arrays. Yes, it turns out that RL 2.5 *does* have array support (although you'd never find this out from the documentation). The trick is to use the container-of-container VI, which you only get in the Modifiers palette in (...) (24 years ago, 14-Nov-01, to lugnet.robotics.rcx.robolab)
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| | Re: Mindstorms used as an Engineering Prototype Tool
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| (...) Don, I have (more or less) completed a 0.000000250 Ton LEGO Injection Molding Plant. It consists of a Mold Press, complete with driven screw, pneumatic ram and barrel heaters, a Mold Assembly complete with manifold heater, a Pneumatic (...) (24 years ago, 13-Nov-01, to lugnet.robotics)
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| | New LEGO Robotics Web Page
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| All, The University of New Mexico's LEGO Robotics page has been extensively updated. Please drop in and check it out: (URL) In short, we build autonimous robots out of LEGOs and control them with the Handyboard. Make sure and check out the 2001 (...) (24 years ago, 13-Nov-01, to lugnet.robotics.handyboard)
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| | Vision Command Books
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| Hi, Does anybody know of any books on Vision Command at all. Especially any books at the level of David Baum's or Bagnall's on Mindstorms. I am really interested in detailed image processing with VC. Thanks, Jon (23 years ago, 21-Nov-02, to lugnet.robotics.vc)
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