Ever since i've learned to understand and watch American football games on TV, i've always been fascinated by the yellow line that is created where the team needs to move the ball ten yards in a maximum of four tries. What makes it unusual is because it only shows up on areas of the screen where turf is shown and never on the players or other objects.
I've finally found a discussion of how its all done. There's even a video of it explaining the technical details of the system.
This could not be done until computer processing was fast and the software was intelligent enough. Very bright guys indeed.
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Makalingaw and amazing how these things are done now.
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