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Old 11-12-2012, 11:35 AM   #12
Chas Tennis
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Join Date: Feb 2011
Location: Baltimore, MD
Posts: 2,965
Default considerations for Smartphone velocity measurement

I thought of using my Samsung Galaxy S2 Smartphone. I was surprised to learn that the frame rate on that particular phone may vary under some circumstances. Maybe it only slows down (<30fps) in low lighting levels. ? I would check that point for any phone video camera before assuming that it is an accurate 30 or 60 fps.

Scale for calibrating distance-
https://vimeo.com/49909907

Another consideration - most smartphones have very wide angle lenses. The magnification changes across the image.

There are some golf smartphone applications that you might want to check.

Good luck, it looks like a great, fun project!
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