1. Algorithm to evaluate how blurred an image is. 2. Adjust the focus a little b...

		michaelt on Aug 9, 2013 \| parent \| context \| favorite \| on: Senic (YC S13) builds a laser distance meter for s... 1. Algorithm to evaluate how blurred an image is. 2. Adjust the focus a little bit, is it getting less blurred? Keep going. More blurred? Other direction. 3. Keep adjusting until you find the point where adjusting either way means more blur.

1 is pretty often "how much contrast", which is pretty easy to do.