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???
02/25/10 18:03
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#173569 - human-filtering the result
Responding to: ???'s previous message
Raj Nambiar said:
what would be the best method for human-filtering the result.

Erik Malund said:
i do not see how you can do that with a row of LEDs

If they are significantly closer together than the minimum width of a "normal" human body then, if only 1 beam is broken, you know that it can't be a "normal" human body - don't you?!

You would also need to time the duration of the break - to distinguish something wide enough for a human, but too short, passing through the beams...

List of 14 messages in thread
TopicAuthorDate
Perimeter intrusion detection            01/01/70 00:00      
   comments            01/01/70 00:00      
      human-filtering the result            01/01/70 00:00      
         I wonder ...            01/01/70 00:00      
   What's the size (Length, width, height) of the "fence"?            01/01/70 00:00      
      Muxing and filtering            01/01/70 00:00      
         Machine Vision?            01/01/70 00:00      
            Machine vision.            01/01/70 00:00      
               The problem with machine vision            01/01/70 00:00      
                  Thanks Jez, but it would be expensive!            01/01/70 00:00      
         Why not start by answering the questions asked?            01/01/70 00:00      
   Light Curtain            01/01/70 00:00      
      Answers and light curtain            01/01/70 00:00      
         human filtering            01/01/70 00:00      

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