Inventor
WU JOHN W
US11 patents
⚠️ This page may combine multiple inventors who share the name “WU JOHN W”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
XEROX CORP
10 patentsUS6181813B1Jan 30, 2001
Method for counterfeit currency detection using orthogonal line comparison
XEROX CORP56 citations94
US6067374AMay 23, 2000
Seal detection system and method
XEROX CORP39 citations91
US6542629B1Apr 1, 2003
Digital imaging method and apparatus for detection of document security marks
XEROX CORP50 citations90
US6317524B1Nov 13, 2001
Anti-counterfeit detection method
XEROX CORP20 citations90
US7773254B2Aug 10, 2010
Method and system for improved copy quality in a multifunction reprographic system
XEROX CORP8 citations83
US7561747B2Jul 14, 2009
Image data processing system and method
XEROX CORP6 citations73
US8023150B2Sep 20, 2011
Method and system for improved copy quality by generating contone value based on pixel pattern and image context type around pixel of interest
XEROX CORP2 citations61
US7869093B2Jan 11, 2011
Method and system for improved copy quality in a multifunction reprographic system
XEROX CORP2 citations61
US4658158AApr 14, 1987
Voltage sense amplifier using NMOS
XEROX CORP6 citations57
US8041143B2Oct 18, 2011
Methods for background and noise suppression in binary to grayscale image conversion
XEROX CORP1 citations51