How the Yellow Line is Drawn in Football Coverage

As you might expect, the camera position, angle, zoom etc are fed back to computers where the green field is replaced with yellow. Interestingly, one operator’s entire job is to match the replacement color to prevent the line from drawing on top of players when it’s muddy or foggy. Are green pants illegal now?

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CuriousInventor launched in late 2006 (pre-arduino era!) as a place to enable hobbyists, students, and musicians to create their own technology. We sold open-source kits and tools, and offered numerous guides & videos on things like soldering, metal working, screws, electronics, and more. 

The store is now mostly empty, but we’ve kept the product pages and guides up since they have useful information. Many of our guides and videos still rank on the first page of google searches and have been seen millions of times. Content on this site and the CuriousInventor YouTube channel produced by Scott Driscoll.

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