00388nas a2200097   4500008003900000245007800039210006900117100001900186700002200205856006300227       2010                          d00aWatch Your Head: A Wearable Collision Warning Sensor System for the Blind0 aWatch Your Head A Wearable Collision Warning Sensor System for t1 aJameson, Brant1 aManduchi, Roberto  uhttp://users.soe.ucsc.edu/~manduchi/papers/sensors2010.pdf