> Date: Mon, 18 Jan 2010 10:55:48 -0500
> From: Andy Walls <[email protected]>
> If you know what the contents of a YUV frame looks like from a capture
> of a red screen, you may be able to figure out some poor man's image
> processing in a script to check for a red screen without having a person
> inspect it.
You could also use aalib to get an ASCII "picture" of the data, using
jp2a or somesuch [1]. Or, if you have several seconds of recording,
you could do your analysis in the audio domain (I'm assuming your red
screens are also silent); see [2] for an example. (Though [2]'s real
purpose is detecting silence embedded in longer recordings, or EAS
bursts, the general idea would be easy to adapt.)
[1] http://evuraan.blogspot.com/2008/01/how-to-ensure-set-top-box-stb-is.html
[2] http://svn.mythtv.org/trac/ticket/6899
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