Inventor · disambiguated record
Robert Ulichney
Also filed as: ULICHNEY ROBERT · ULICHNEY ROBERT A · ULICHNEY ROBERT ALAN
82 granted patents·11 pending applications·1,197 citations·filing 1989–2020
99Inventor score
Files withHEWLETT PACKARD DEVELOPMENT CO44DIGITAL EQUIPMENT CORP12COMPAQ COMPUTER CORP11ULICHNEY ROBERT ALAN10HEWLETT PACKARD DEVELOPMENT CO LP4
Top patents by PatentIndex Score
93 records- 0196US7018050B2System and method for correcting luminance non-uniformity of obliquely projected imagesHEWLETT PACKARD DEVELOPMENT CO·Filed 2003·Granted Mar 28, 2006·110 cites·13 claims
- 0293US7046401B2Camera-based document scanning system using multiple-pass mosaickingHEWLETT PACKARD DEVELOPMENT CO·Filed 2001·Granted May 16, 2006·144 cites·24 claims
- 0393US5233684AMethod and apparatus for mapping a digital color image from a first color space to a second color spaceDIGITAL EQUIPMENT CORP·Filed 1990·Granted Aug 3, 1993·132 cites·8 claims
- 0492US7155058B2System and method for automatically detecting and correcting red eyeHEWLETT PACKARD DEVELOPMENT CO·Filed 2002·Granted Dec 26, 2006·109 cites·20 claims
- 0592US6921172B2System and method for increasing projector amplitude resolution and correcting luminance non-uniformityHEWLETT PACKARD DEVELOPMENT CO·Filed 2003·Granted Jul 26, 2005·53 cites·14 claims
- 0692US5535020AVoid and cluster apparatus and method for generating dither templatesDIGITAL EQUIPMENT CORP·Filed 1992·Granted Jul 9, 1996·90 cites·49 claims
- 0792US4955065ASystem for producing dithered images from continuous-tone image dataDIGITAL EQUIPMENT CORP·Filed 1989·Granted Sep 4, 1990·80 cites·16 claims
- 0891US8284987B2Payload recovery systems and methodsULICHNEY ROBERT ALAN·Filed 2010·Granted Oct 9, 2012·12 cites·20 claims
- 0985US8456699B2System and method for creating a data-bearing imageULICHNEY ROBERT ALAN·Filed 2009·Granted Jun 4, 2013·8 cites·20 claims
- 1084US6817721B1System and method for correcting projector non-uniformityHEWLETT PACKARD DEVELOPMENT CO·Filed 2003·Granted Nov 16, 2004·24 cites·14 claims
- 1182US9361514B2Forensic verification from halftone imagesPOLLARD STEPHEN·Filed 2012·Granted Jun 7, 2016·5 cites·11 claims
- 1282US8634110B2Edge refinement systemULICHNEY ROBERT ALAN·Filed 2010·Granted Jan 21, 2014·5 cites·15 claims
- 1380US10891704B2M-ary cyclic codingHEWLETT PACKARD DEVELOPMENT CO·Filed 2020·Granted Jan 12, 2021·1 cites·20 claims
- 1479US9373032B2Forensic verification utilizing forensic markings inside halftonesULICHNEY ROBERT ALAN·Filed 2012·Granted Jun 21, 2016·3 cites·14 claims
- 1578US11167481B2Multiscale density threshold matrices for 3D printingHEWLETT PACKARD DEVELOPMENT CO·Filed 2016·Granted Nov 9, 2021·1 cites·15 claims
- 1677US8594453B2Method of robust alignment and payload recovery for data-bearing imagesGAUBATZ MATTHEW D·Filed 2011·Granted Nov 26, 2013·3 cites·18 claims
- 1777US5602941AInput modification system for multilevel ditheringDIGITAL EQUIPMENT CORP·Filed 1993·Granted Feb 11, 1997·44 cites·30 claims
- 1876US8937750B2Inter-block data managementULICHNEY ROBERT ALAN·Filed 2011·Granted Jan 20, 2015·3 cites·15 claims
- 1976US6172773B1Void and cluster apparatus and method for generating dither templatesCOMPAQ COMPUTER CORP·Filed 1999·Granted Jan 9, 2001·37 cites·45 claims
- 2075US9367776B2Systems and methods for tracing the source of printed pagesULICHNEY ROBERT ALAN·Filed 2011·Granted Jun 14, 2016·4 cites·15 claims
- 2175US6690389B2Tone modifying dithering systemCOMPAQ COMPUTER CORP·Filed 2000·Granted Feb 10, 2004·15 cites·20 claims
- 2275US6473525B1Method for detecting an image edge within a dithered imageCOMPAQ COMPUTER CORP·Filed 2000·Granted Oct 29, 2002·19 cites·6 claims
- 2374US10027843B2Embedding data in halftone imagesHEWLETT PACKARD DEVELOPMENT CO·Filed 2014·Granted Jul 17, 2018·2 cites·20 claims
- 2474US10002413B2Recovering planar projectionsHEWLETT PACKARD DEVELOPMENT CO·Filed 2014·Granted Jun 19, 2018·3 cites·15 claims
- 2573US7830418B2Perceptually-derived red-eye correctionHEWLETT PACKARD DEVELOPMENT CO·Filed 2006·Granted Nov 9, 2010·9 cites·17 claims
- 2672US11113592B2Data-bearing mediumHEWLETT PACKARD DEVELOPMENT CO·Filed 2017·Granted Sep 7, 2021·1 cites·15 claims
- 2772US8376235B2Blur resistant barcodeHEWLETT PACKARD DEVELOPMENT CO·Filed 2012·Granted Feb 19, 2013·2 cites·6 claims
- 2870US10530967B1Assigning halftone screens to clustered image portions based on color and contentHEWLETT PACKARD DEVELOPMENT CO·Filed 2019·Granted Jan 7, 2020·2 cites·15 claims
- 2969US5912745AVoid and cluster apparatus and method for generating dither templatesDIGITAL EQUIPMENT CORP·Filed 1997·Granted Jun 15, 1999·26 cites·15 claims
- 3067US12504739B2System and method for generating three-dimensional latticed conductive elementsPERIDOT PRINT LLC·Filed 2020·Granted Dec 23, 2025·0 cites·15 claims
- 3167US10154165B2Multiple payload pantographsHEWLETT PACKARD DEVELOPMENT CO·Filed 2014·Granted Dec 11, 2018·1 cites·14 claims
- 3266US8226010B2Blur resistant barcodeSIMSKE STEVEN J·Filed 2009·Granted Jul 24, 2012·2 cites·11 claims
- 3365US10621688B2M-ary cyclic codingHEWLETT PACKARD DEVELOPMENT CO·Filed 2015·Granted Apr 14, 2020·1 cites·13 claims
- 3464US7130491B2System and method for interpolating a color imageHEWLETT PACKARD DEVELOPMENT CO·Filed 2003·Granted Oct 31, 2006·11 cites·10 claims
- 3563US11263784B2Determine image capture position information based on a quasi-periodic patternHEWLETT PACKARD DEVELOPMENT CO·Filed 2019·Granted Mar 1, 2022·0 cites·20 claims
- 3662US11102376B2Recursive halftoning and gray value substitutionHEWLETT PACKARD DEVELOPMENT CO·Filed 2019·Granted Aug 24, 2021·0 cites·20 claims
- 3761US11277539B2Encoding information using disjoint highlight and shadow dot patternsHEWLETT PACKARD DEVELOPMENT CO·Filed 2018·Granted Mar 15, 2022·0 cites·15 claims
- 3861US10791239B2Encoding information in printed images by decreasing grayscale pixel values exceeding thresholdHEWLETT PACKARD DEVELOPMENT CO·Filed 2018·Granted Sep 29, 2020·0 cites·15 claims
- 3961US10521931B2Determine image capture position information based on a quasi-periodic patternHEWLETT PACKARD DEVELOPMENT CO·Filed 2014·Granted Dec 31, 2019·0 cites·20 claims
- 4061US7453449B2System and method for correcting defective pixels of a display deviceHEWLETT PACKARD DEVELOPMENT CO·Filed 2004·Granted Nov 18, 2008·6 cites·29 claims
- 4161US5333260AImaging system with multilevel dithering using bit shifterDIGITAL EQUIPMENT CORP·Filed 1992·Granted Jul 26, 1994·19 cites·19 claims
- 4260US11089180B2Encoding dot patterns into printed images based on source pixel colorHEWLETT PACKARD DEVELOPMENT CO·Filed 2018·Granted Aug 10, 2021·0 cites·20 claims
- 4358US5920322AMethod and apparatus for providing 32-bit YUV to RGB color conversionDIGITAL EQUIPMENT CORP·Filed 1996·Granted Jul 6, 1999·21 cites·31 claims
- 4457US10171107B2Groups of phase invariant codewordsHEWLETT PACKARD DEVELOPMENT CO·Filed 2014·Granted Jan 1, 2019·0 cites·20 claims
- 4557US8872869B2System and method for correcting defective pixels of a display deviceDAMERA-VENKATA NIRANJAN·Filed 2004·Granted Oct 28, 2014·4 cites·26 claims
- 4657US8446494B2Automatic redeye detection based on redeye and facial metric valuesGAUBATZ MATTHEW D·Filed 2008·Granted May 21, 2013·3 cites·20 claims
- 4757US5333262AImaging system with multilevel dithering using two memoriesULICHNEY ROBERT A·Filed 1992·Granted Jul 26, 1994·19 cites·22 claims
- 4856US11423505B2Encoded monochrome images of data-hiding watermarksHEWLETT PACKARD DEVELOPMENT CO·Filed 2018·Granted Aug 23, 2022·0 cites·20 claims
- 4955US10560117B2Groups of phase invariant codewordsHEWLETT PACKARD DEVELOPMENT CO·Filed 2018·Granted Feb 11, 2020·0 cites·15 claims
- 5055US9984318B2Data-bearing mediumHEWLETT PACKARD DEVELOPMENT CO·Filed 2013·Granted May 29, 2018·0 cites·19 claims
Showing the top 50 of 93 patent records by PatentIndex Score.
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →