Generating a time-lapse of sky contours transitioning into shapes from google street views.

http://maps.googleapis.com/maps/api/streetview?size=1200×1200&location=40.720032,-73.988354&fov=180&heading=0&pitch=90&sensor=false

Identifying contour of sky (using OfxCV color contour recognition)->

A storyboard of a simple contour animation

How to compute difference between contours:

A few views of sky in Hong Kong:

Questions:

How to scrape sky views of the whole world?

Mapreduce?

Better nearest contour searching algorithm?

Earlier experiments: