Quote:
Originally Posted by theycallhimtom
...the camera using Kevin's default settings sees everything but the light as purple and the light as a blue. The fluorescent lights showed up as yellow/blue.
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That's because the camera is being told to look at the image using the YCrCb color space, but the program is presenting it as if it were RGB. The actual hue of the green light is very consistent even as the intensity varies with distance, so it's a lot easier to find a good range of values that will let you track it.