Assignee
YU SONGYANG
US·3 granted patents·1 pending application·12 citations·filing 2007–2012
Top patents by PatentIndex Score
4 records- 0179US8947736B2Method for binarizing scanned document images containing gray or light colored text printed with halftone patternYU SONGYANG·Filed 2010·Granted Feb 3, 2015·5 cites·21 claims
- 0270US8331670B2Method of detection document alteration by comparing characters using shape features of charactersYU SONGYANG·Filed 2011·Granted Dec 11, 2012·5 cites·38 claims
- 0358US8218879B2System and method for shutter detectionYU SONGYANG·Filed 2007·Granted Jul 10, 2012·2 cites·15 claims
- 0447US2012275679A1System and method for shutter detectionYU SONGYANG·Filed 2012·Application pending·0 cites
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