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A comment on The Gyroscopes in Your Phone Could Let Apps Eavesdrop on Conversations. Parent comment
http://people.csail.mit.edu/mrub/VisualMic/
I saw a talk on this recently by Prof. Bill Freeman, a co-author of the above work. The visual mic idea is based on a general technique for amplifying small motions; the motions here are the tiny movements of the bag.
The more generic idea is here: http://people.csail.mit.edu/nwadhwa/phase-video/
It seems like it could have applications to lots of areas.
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http://people.csail.mit.edu/mrub/VisualMic/
I saw a talk on this recently by Prof. Bill Freeman, a co-author of the above work. The visual mic idea is based on a general technique for amplifying small motions; the motions here are the tiny movements of the bag.
The more generic idea is here: http://people.csail.mit.edu/nwadhwa/phase-video/
It seems like it could have applications to lots of areas.