I need to grab an image from a board-mounted camera (1kx1k pixels would do, colour not required), count and then output the number of pixels with luminance values below 10% of mean.
This has to be repeated once every minute. Frame and processing rates can therefore be very low.
The key things is I need are robustness, low-cost and low power.
Can anyone recommend appropriate hardware?
I'm posting this as an Arduino topic because that's the hardware with which I'd start - and because I don't see another forum here where I can post a question about chosing single-board-embedded-systems for this specific purpose. If there is another, more appropriate forum please tell me what it is.
I'm not considering Pi or Beaglebone because of power-consumption, cost and complexity. What I'm trying to do is quite trivial, it doesn't require the data to be treated as an image and it just need to output a single number. So I'd consider an Arduino mega as a good start - but the awesome collective conciousness of the SE community usually knows better.