Jones & Askew
Postnet bar code decoder
 A method and apparatus is provided which decodes Postnet bar code regardless of position or orientation. By scanning the code, deriving transition points, and assuming various angles at orientation, position and orientation is estimated. Fine tuning and error correction is likewise provided. A localized sorting method is also used for decoding to binary status. 
United Parcel Service of America Inc.
G G G
G06K G06K G06K
inventional inventional inventional
Joe Wenhua
Zheng Li