Inventor
BALASUBRAMANIAN THYAGARAJAN
US36 patents
⚠️ This page may combine multiple inventors who share the name “BALASUBRAMANIAN THYAGARAJAN”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
XEROX CORP
34 patentsUS6268939B1Jul 31, 2001
Method and apparatus for correcting luminance and chrominance data in digital color images
XEROX CORP287 citations99
US5892891AApr 6, 1999
System for printing color images with extra colorants in addition to primary colorants
XEROX CORP160 citations99
US7307752B1Dec 11, 2007
On-line calibration system for a dynamically varying color marking device
XEROX CORP68 citations98
US6441923B1Aug 27, 2002
Dynamic creation of color test patterns based on variable print settings for improved color calibration
XEROX CORP99 citations98
US6654143B1Nov 25, 2003
Printer characterization adjustment for different papers
XEROX CORP66 citations96
US6646762B1Nov 11, 2003
Gamut mapping preserving local luminance differences
XEROX CORP55 citations96
US6414690B1Jul 2, 2002
Gamut mapping using local area information
XEROX CORP73 citations96
US6381037B1Apr 30, 2002
Dynamic creation of color test patterns for improved color calibration
XEROX CORP55 citations96
US6342951B1Jan 29, 2002
Gamut mapping algorithm using inverted gamma function
XEROX CORP57 citations96
US6335800B1Jan 1, 2002
Method of multidimensional interpolation for color transformations
XEROX CORP64 citations96
US6097838AAug 1, 2000
Color correction of a compressed image
XEROX CORP66 citations96
US6009192ADec 28, 1999
Color correction of a compressed image
XEROX CORP67 citations96
US5739927AApr 14, 1998
Method for refining an existing printer calibration using a small number of measurements
XEROX CORP59 citations95
US7436549B2Oct 14, 2008
Patch codes for color calibration job identification encoding
XEROX CORP18 citations93
US7064860B1Jun 20, 2006
Color-balanced TRC correction to compensate for illuminant changes in printer characterization
XEROX CORP27 citations93
US6972867B1Dec 6, 2005
Patch codes for color calibration job identification encoding
XEROX CORP29 citations93
US6954287B1Oct 11, 2005
Gamut mapping preserving local luminance differences with adaptive spatial filtering
XEROX CORP38 citations93
US6766053B2Jul 20, 2004
Method and apparatus for classifying images and/or image regions based on texture information
XEROX CORP52 citations93
US6744534B1Jun 1, 2004
Robust colorimetry transform
XEROX CORP37 citations93
US6707938B2Mar 16, 2004
Principal axis look-up for color correction
XEROX CORP29 citations93
US6307645B1Oct 23, 2001
Halftoning for hi-fi color inks
XEROX CORP35 citations93
US6239886B1May 29, 2001
Method and apparatus for correcting luminance and chrominance data in digital color images
XEROX CORP56 citations93
US6195456B1Feb 27, 2001
Multi resolution color correction using wavelet transforms
XEROX CORP40 citations93
US5649072AJul 15, 1997
Iterative technique for refining color correction look-up tables
XEROX CORP35 citations93
US6803921B1Oct 12, 2004
Use of softproofing to assist in the rendering of images of unknown colorimetry
XEROX CORP44 citations92
US7072072B1Jul 4, 2006
Color rendering optimized for text and line art
XEROX CORP17 citations84
US6766051B2Jul 20, 2004
Adaptive tree-base lookup for non-separably divided color tables
XEROX CORP13 citations84
US6731796B2May 4, 2004
Graphical user interface for color transformation table editing that avoids reversal artifacts
XEROX CORP16 citations84
US6621498B1Sep 16, 2003
High-speed non-separable color table lookup
XEROX CORP19 citations84
US6285462B1Sep 4, 2001
Intelligent GCR/UCR process to reduce multiple colorant moire in color printing
XEROX CORP16 citations84
US7215440B2May 8, 2007
Fast interpolation of large color lookup tables
XEROX CORP8 citations74
US7085004B2Aug 1, 2006
Calibration system for document processing system including visual layout validation for target measurements
XEROX CORP10 citations74
US6819792B1Nov 16, 2004
Automatic detection of colorimetry of unknown CMYK images
XEROX CORP7 citations74
US6295137B1Sep 25, 2001
Method of color correction using multi-level halftoning
XEROX CORP8 citations74