Inventor
SHIAU JENG-NAN
US47 patents
⚠️ This page may combine multiple inventors who share the name “SHIAU JENG-NAN”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
XEROX CORP
46 patentsUS6222642B1Apr 24, 2001
System and method for eliminating background pixels from a scanned image
XEROX CORP171 citations99
US5293430AMar 8, 1994
Automatic image segmentation using local area maximum and minimum image signals
XEROX CORP284 citations99
US7277191B2Oct 2, 2007
Fast efficient window region coalescing in a two-pass auto-windowing environment
XEROX CORP98 citations98
US6549658B1Apr 15, 2003
Method and system for classifying and processing of pixels of image data
XEROX CORP80 citations98
US6347153B1Feb 12, 2002
Method and system for classifying and processing of pixels of image data
XEROX CORP115 citations98
US5642202AJun 24, 1997
Scan image target locator system for calibrating a printing system
XEROX CORP140 citations98
US5850474ADec 15, 1998
Apparatus and method for segmenting and classifying image data
XEROX CORP123 citations97
US6181829B1Jan 30, 2001
Method and system for classifying and processing of pixels of image data
XEROX CORP64 citations96
US5852678ADec 22, 1998
Detection and rendering of text in tinted areas
XEROX CORP64 citations96
US5809177ASep 15, 1998
Hybrid error diffusion pattern shifting reduction using programmable threshold perturbation
XEROX CORP68 citations96
US5765029AJun 9, 1998
Method and system for fuzzy image classification
XEROX CORP77 citations96
US5515172AMay 7, 1996
Apparatus and method for enhanced color to color conversion
XEROX CORP94 citations96
US5341226AAug 23, 1994
Automatic image segmentation for color documents
XEROX CORP59 citations96
US6175427B1Jan 16, 2001
System and method of tonal correction of independent regions on a compound document
XEROX CORP57 citations95
US6240205B1May 29, 2001
Apparatus and method for segmenting and classifying image data
XEROX CORP81 citations94
US6947597B2Sep 20, 2005
Soft picture/graphics classification system and method
XEROX CORP21 citations93
US6535633B1Mar 18, 2003
Method and apparatus for re-classifying color image pixels classified by single channel segmentation
XEROX CORP33 citations93
US6529291B1Mar 4, 2003
Fuzzy black color conversion using weighted outputs and matched tables
XEROX CORP22 citations93
US6427030B1Jul 30, 2002
Method and system for image conversion utilizing dynamic error diffusion
XEROX CORP20 citations93
US6185328B1Feb 6, 2001
Method and system for classifying and processing of pixels of image data
XEROX CORP50 citations93
US6144775ANov 7, 2000
Method and system for storing error values for an image conversion process utilizing dynamic error diffusion
XEROX CORP43 citations93
US5960109ASep 28, 1999
Single pass marker enclosed area detection system and method for a photocopier
XEROX CORP23 citations93
US5933539AAug 3, 1999
Method and system for hybrid error diffusion processing of image information using programmable screen modulation
XEROX CORP26 citations93
US5880857AMar 9, 1999
Error diffusion pattern shifting reduction through programmable threshold perturbation
XEROX CORP48 citations93
US5696601ADec 9, 1997
System and method for redistributing error values from an error diffusion process
XEROX CORP24 citations93
US5608821AMar 4, 1997
Method of high addressability error diffusion
XEROX CORP38 citations93
US5553171ASep 3, 1996
Apparatus and method for arbitrary binary resolution conversion
XEROX CORP43 citations93
US5528384AJun 18, 1996
System and method for implementing fast high addressability error diffusion process
XEROX CORP26 citations93
US5353127AOct 4, 1994
Method for quantization gray level pixel data with extended distribution set
XEROX CORP53 citations93
US6229923B1May 8, 2001
Method and system for classifying and processing of pixels of image data
XEROX CORP43 citations92
US6201613B1Mar 13, 2001
Automatic image enhancement of halftone and continuous tone images
XEROX CORP26 citations92
US6137907AOct 24, 2000
Method and apparatus for pixel-level override of halftone detection within classification blocks to reduce rectangular artifacts
XEROX CORP53 citations92
US7239430B2Jul 3, 2007
Binary halftone detection
XEROX CORP20 citations84
US7009739B1Mar 7, 2006
Color to black and white converter
XEROX CORP16 citations84
US6525845B1Feb 25, 2003
Methods and apparatus for modifying image data based on identification of marking process
XEROX CORP13 citations84
US6249357B1Jun 19, 2001
System and apparatus for tonal reproduction curve adjustment in a hybrid error diffusion process
XEROX CORP16 citations84
US5787206AJul 28, 1998
Method and system for processing image information using expanded dynamic screening and error diffusion
XEROX CORP19 citations84
US5710836AJan 20, 1998
System and apparatus for tonal reproduction adjustment in an error diffusion process
XEROX CORP18 citations84
US6347159B1Feb 12, 2002
Method and system for processing image information using screening and error diffusion
XEROX CORP10 citations74
US5903361AMay 11, 1999
Method and system for processing image information using background error diffusion
XEROX CORP10 citations74
US5196942AMar 23, 1993
System and method for determining picture element values
XEROX CORP19 citations74
US7421143B2Sep 2, 2008
Systems and methods for optimal dynamic range adjustment of scanned images
XEROX CORP2 citations63
US6631215B1Oct 7, 2003
Method and apparatus for implementing integrated cavity effect correction in scanners
XEROX CORP3 citations62
US7545540B2Jun 9, 2009
Method and system for processing color image data
XEROX CORP1 citations52
US7724955B2May 25, 2010
Apparatus and method for auto windowing using multiple white thresholds
XEROX CORP1 citations51
US7822290B2Oct 26, 2010
System and method for processing images with leaky windows
XEROX CORP0 citations41