Hacked Gadgets Forum

September 3, 2008

Webcam RangeFinder

at 7:25 am. Filed under Computer Hacks, Cool Gadgets, DIY Hacks

 

DIY Lab has put up some plans that will allow you to use your webcam as a rangefinder. I wonder if the technique used is similar to the golf green distance estimators?

"Convert your webcam into a modern range estimation tool without any hardware. The math is very simple, so this new technique works very well for vision applications that need to run quickly. With a simple height estimation, the program will easily calculate the range to a distant object with high precision. The software will be next upgraded with motion detection."


 

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6 Responses to “Webcam RangeFinder”

  1. aka Says:

    Next stage would be a port to camara equipped mobile phones

  2. DIY Rangefinder can tell distance using a Web Cam! | zedomax.com - Obsessively profiling DIYs, HOW-TO,Hacks, Gadgets, Tech, Web2.0,and beyond. Says:

    […] hackedgadgets, DIY Page A+Featured DIYs, Consumer, Cool, distant object, DoItYourself!, Educational, […]

  3. miked Says:

    Exactly the same as the “golf green distance estimators”. “Simple height estimation”. Why hasn’t anyone thought of this before? This would be a great application for the iPhone. You could be a thousandaire!

  4. doh Says:

    miked, this is the good 2500 years old pythagorean theorem at work. You can accomplish the same result with a ruler and a piece of string, both of known length. It’s an old trick I was taught in the army and should be easy to find on the net.
    Anyway, to get enough precision you always need to have a rough estimate of the subject height. I believe this wasn’t done before on phones probably because of their terrible optics and the resulting distortion that would reduce the calculations precision.

  5. miked Says:

    i meant why hasn’t it been done on a computer before. i understand how it was done.

  6. David Williams Says:

    I am moved to comment by miked’s first post: “You could be a thousandaire!”

    Yes, you could, just like most other dot com boomers 😉

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