Subject:
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Re: Color Sensor
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Newsgroups:
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lugnet.robotics
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Date:
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Thu, 10 Feb 2005 17:14:08 GMT
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Viewed:
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1446 times
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In lugnet.robotics, Steve Lane wrote:
> Could you elaborate on "with a controlled light source".
The spectrum of the light reflecting off something is a function of the original
light spectrum and the color of the object. You need to control the light
because different light sources have their own color spectrum. For example if
you calibrated the sorter with sunlight it might not work very well under
incandescent light. I used a portable fluorescent light for my experiments. It
seemed to give the most stable spectrum and wasn't dominated by infrared like an
incandenscent light.
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Message is in Reply To:
 | | Re: Color Sensor
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| (...) Hi Micheal I intend to have a crack at building your sensor. At the bottom of the page it says "If you use the color sensor to sort bricks, you need to calibrate the hue reading for the bricks you want to sort with a controlled light source." (...) (20 years ago, 9-Feb-05, to lugnet.robotics)
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