 | | Re: Working motorized focus for Vision Command
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(...) from one end to another taking pictures as you go, and selecting the best parts of each, you'd end up with better-than-perfect focussing. I guess you'd want to be careful to mount the camera very rigidly so it doesn't wobble as you drive the (...) (23 years ago, 19-Dec-02, to lugnet.robotics)
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| | Something unusual(?)
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Dear all, Here is some light entertainment: (URL) aware that the video file linked by the image is a 6 mb Divx 4 AVI) I'll post some notes on how I made it soon - for now enjoy the movie! (23 years ago, 18-Dec-02, to lugnet.animation, lugnet.space, lugnet.technic, lugnet.robotics, lugnet.build, lugnet.starwars, lugnet.cad)
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| | Re: Working motorized focus for Vision Command
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But how to I "weave" the SDK and the algorithms IN VC++? I am only wondering if this idea of an autofocusing lego cam is feasible. One day I may learn enough VC++ to be able to acomplish this project :-) I'm glad to know there is hope! Timothy (...) (23 years ago, 18-Dec-02, to lugnet.robotics)
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| | Re: Working motorized focus for Vision Command
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(...) Timothy, One source of inspiration for the focusing algorithm is to look at codes that expand the depth of focus by stitching together the in-focus portions of multiple images. This is used in microscopy quite a bit. The software has to be (...) (23 years ago, 18-Dec-02, to lugnet.robotics)
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| | Re: Working motorized focus for Vision Command
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(...) No problem. The VC camera is a repacked Logitech. You can get a free quickcam SDK from the Logitech homepage. With that, you can program the camera under Windows. If you want to use Linux, things get a bit more complicated. You could use (...) (23 years ago, 18-Dec-02, to lugnet.robotics)
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| | Re: Working motorized focus for Vision Command
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I have no idea how to access the camera from a programming language, nor do I have any experience in raw vision proccessing. Do you know how to do any of these previously meantioned? Timothy (...) (23 years ago, 18-Dec-02, 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: Tempted in buying my first Mindstorms invention kit - 1.5 vs 2.0 ?
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I have not performed any tests, but if you go in configuration panel, you will see that the USB tower can't be put in long range mode if it is placed behind a passive (non powered) USB hub. That may also be the case for low power laptop usb ports. (...) (23 years ago, 18-Dec-02, to lugnet.robotics)
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| | Re: Lego® 9V Technic Motors compared characteristics
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Hi Gaurav, (...) ;o) (...) I don't own these motors... but I have a friend who has this set, if I can get him to extract the motors from the car I'll post an update... Philo www.philohome.com (23 years ago, 18-Dec-02, to lugnet.robotics, lugnet.technic)
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| | Re: Working motorized focus for Vision Command
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Thanks for replying! I was thinking of the same procedure. But to help with the varried depth problem, a small part of the viewed area could be selected to be the focusing point. So overall, it must be possible, right? Timothy (...) (23 years ago, 18-Dec-02, to lugnet.robotics)
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