I know FoodEssentials used to do this on mTurk. I did them myself on that platform. They haven't been around in a while, though. I'd be more than happy to enter nutritional label information on mTurk should that method be chosen.
Re:Ask HN: Idea Sunday
by karangoeluw on Sunday April 06, 2014 @06:36PM
(#7543472)
I don't know how hard it might be, but we have a team already (wow HN), and have started the work.
Either way, I think OCR-as-a-service would be really useful, and nutrition labels are probably a great place to start. I think there's lots of room for improvement in the nutrition/meal planning space.