I have been reading this screensteps article
http://wpilib.screenstepslive.com/s/...ng-the-targets under the Distance section and I was confused by some things.
In particular, this:
Quote:
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Vertical target rectangle measures 40 pixels when the camera resolution was 320x240. This means that the blue rectangle width is 2.66*320/30 or 21.28ft.
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I understand the 320 but where do the 2.66 and 30 come in? I think I have everything else down.