Some thoughts @jkridner
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For things that are done before network is available, USB to HDMI converters are dirt cheap now. So using them to get the HDMI out and doing some video processing on that is not too difficult. The other computer just treats it like a regular USB webcam - so anything opencv just works.
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For things that come later - after we’ve gotten network on the device - I think we can host a simple server and serve the test results as a simple webpage. Mongoose is probably a lightweight enough solution to run a simple c server from within beagle-tester (given its all C right now and we’d like to keep it that way).
Then you could show the output on an attached screen - or you could skip the screen completely and access it remotely.