> People > Profiles > LalitMestha

Lalit Mestha

Xerox Research Fellow

LalitMestha

Xerox Research Fellow Lalit K. Mestha spends much of his time at the Xerox Research Center in Webster, N.Y. extending technology into new domains. He currently is applying his expertise in imaging, signal processing, control theory and analytics to create new technologies for health care solutions.

Holding 178 U.S. patents (with 87 pending), Mestha’s areas of expertise include physiological systems, complex algorithms, spectral sensing (visible to infrared), control theory, imaging and biomedical systems. Since joining Xerox in 1994, he has led research efforts and delivered technology in  variety of imaging and sensing products (Xerox®iGen3®, iGen4, iGen4 220, Xerox Color 800 / 1000, DocuColor® 5000 / 7002 / 8002 / 8000, Xerox 770, 700i, MatchAssure, CiPress®, iGen150, etc.). He currently leads several projects that apply his expertise in new and interesting ways. For example, while developing an inline spectral sensor to measure color on paper, he began exploring how this technology could be applied to health care applications such as detecting and predicting cancer. 

Xerox twice has presented Mestha with the Anne Mulcahy Inventor Award for his contributions, and in 1996 awarded him the Excellence in Science and Technology Award for distinguished work in creating new business value, productivity and effective transfer of research technology to new generations of products. 

Mestha’s research also has been recognized widely across the global research community. Recently his work with the University of Rochester Medical Center received the best poster paper award at the International Society for Computerized Electrocardiology’s (ISCE) annual conference for his research in the detection of atrial fibrillation using contactless videoplethysmography. Several years ago, he led a team of Xerox researchers which was recognized with R&D Magazine's Top 100 award for work on a color spectrophotometer that was named "one of the most technologically significant new products of the year." In 2011, the Institute of Electrical and Electronics Engineers (IEEE) elevated Mestha to an IEEE fellow. In 2006, the IEEE awarded him its Control System Technology Award. Mestha continues to be active in the organization, serving as an associate editor of the IEEE Control System Technology journal. He also led the award subcommittee for the IEEE Control System Society during the past five years, and headed the award subcommittee for the American Automatic Control Council and the Transition to Practice Award of IEEE Control System Society. 

Mestha has published 58 journal and refereed conference papers, wrote a reference book on the control of imaging systems (published in 2009 by CRC Press, Taylor and Francis Group) and has co-authored chapters in two additional books.

Throughout his career, Mestha has fostered university collaborations, serving as a member of the advisory boards and a co- and principal investigator on projects with various universities within the United States and abroad (Canada and India). These projects were supported by the National Science Foundation (NSF), a number of states including New York and Texas and grants from Xerox. Mestha has also participated in various national review panels for NSF engineering research centers, Smart Connected Health Programs and research proposals of Small Business Innovative Research.

He currently serves as adjunct professor at the Rochester Institute of Technology’s department of Biomedical Engineering where he teaches physiological controls. 

Mestha received his doctorate in electrical engineering from the University of Bath, England, and his bachelor's degree from the University of Mysore in India.

Prior to joining Xerox, Mestha was at the SSC Laboratory in Dallas. Numerous technologies developed during that time are being deployed in large-scale systems around the world (particle accelerators in Fermilab, KEK, CERN).

Mestha lives in Fairport, N.Y. with his wife Veena, son Savan in college and daughter Suhan in high school. He has served as chairman of the India Community Center of Rochester, and enjoys reading, teaching, doing exercise and yoga.

Publications

Journals & Books

J.P. Couderc, S. Kyal, L. K. Mestha, B. Xu, D.R. Peterson, X. Xia, and B. Hall, “Detection of Atrial Fibrillation Using Contactless Facial Video Monitoring”, Submitted to Heart Rhythm, April 17th 2014

T. Tanaka, C. Langbort, L.K. Mestha and A.E. Gil, “Blind Source Separation by Nuclear Norm Minimization and Local Recoverability Analysis”, IEEE Signal Processing Letters, Vol 20, Issue 8, Aug 2013

G.R. Tsouri, S. Kyal, S.A. Dianat, and L.K. Mestha, “Constrained-ICA Approach to Non-Obtrusive Cardiac Pulse Measurements”, Accepted for publication in “IEEE Transactions on Biomedical Engineering”, July 2012

L.K. Mestha, contributed article in “The Impact of Control Technology: Overview, Success Stories, and Research Challenges”, Book released for publication in 2011,  http://ieeecss.org/main/IoCT-report

L.K. Mestha and A.E. Gil, Color Control – An advanced feedback system, Book Chapter published in “The Control Handbook, Second Edition (three volume set)”, appeared in volume titled “Control System Applications”,  by CRC Press, Taylor and Francis Group, ISBN 978-1-4200-7366-9, December 2010

L.K. Mestha and S.A. Dianat, Control of Color Imaging Systems, Published by: CRC Press, Taylor and Francis Group,  ISBN 978-0-8493-3746-8,  May 2009

L.K. Mestha, University-Industry Interactions, IEEE Control Systems Magazine, Aug 2005
E. Saber, S. Dianat, L.K. Mestha, P.Y. Li, DSP Utilization in Digital Color Printing, IEEE Signal Processing Magazine, July 2005

D.E. Viassolo, S. Dianat, L.K. Mestha, Y.R. Wang, Practical algorithm for the inversion of an experimental input-output color map for color correction, SPIE Journal of Optical Engineering, March 2003

L.K. Mestha, Book Chapter in The SSC Low Energy Booster, H. Ulrich Wienands Editor, IEEE Press, New York, NY, pp. 192-206, 1997

L.K. Mestha, C.M. Kwan and K.S. Yeung, Interactions of Beam Control Loops With High Q Local RF Loops Under Heavy Beam Loading, Particle Accelerators, Vol. 47, no.1, 1994

L.K. Mestha, C.M. Kwan and K.S. Yeung, Fixed-Structure Suboptimal Feedback Control for Particle Accelerators, Particle Accelerators, Vol. 47, no. 2, 1994

L.K. Mestha, C.M. Kwan and K.S. Yeung, Instabilities in Beam Control Feedback Loops in Proton Synchrotrons, Particle Accelerators, Vol. 42, No. 1, pp.1-43, 1993

L.K. Mestha, P.D. Evans, Analysis of on-state losses in PWM inverters, IEE Proceedings, Vol, 136, Pt. B., No. 4, July 1989

P.D. Evans, L.K. Mestha, Analysis of conventional snubber circuits for PWM inverters using bipolar transistors, IEE proceedings, Vol. 135, Pt. B. No. 4, July 1988

Conferences

H. Fang, S. Dianat, L.K. Mestha, A. Radomski, “Developing a Linear Model of RF Power Generators with Pseudo Random Binary Signals (PRBS)”, submitted for International Conference on Control, Automation and Systems, Kintex, Korea, Oct 22-25, 2014

E.A. Bernal, L.K. Mestha, E. Shilla,  “Non-Contact Monitoring of Respiratory Function via Depth Sensing”, IEEE Engineering in Medicine and Biology Society “2014 International Conference on Biomedical and Health Informatics”, Valencia (Spain), 1-4, June 2014

S. Kyal, L.K. Mestha, B. Xu, J.P. Couderc, “A Method to Detect Cardiac Arrhythmias with a Webcam”, IEEE Signal Processing in Medicine and Biology Symposium (SPMB13), Polytechnic Institute of New York University, Brooklyn, NY 11201, Dec 7, 2013

B. Xu, L.K. Mestha, and R.P. Loce, “Vascular Pattern Localization via Temporal Signature”, Submitted to 35th IEEE EMBS, July 3-7, 2013, Osaka, Japan

S. Krisna, K. Chatti, L.K. Mestha and R.R. Galigekere, “Algorithms for Automatic & Non-contact Assessment of the Cardiovascular System in Zebrafish Embryos”,  IEEE EMBS Special Topic Conference on Point-of-Care Healthcare Technologies, Bangalore, India January 16-18, 2013

T. Tanaka, C. Langbort, L.K. Mestha and A.E. Gil, “Blind source separation by nuclear norm minimization with application to system identification”, Paper approved for publication in IEEE Conference on Decision and Control, Maui, Hawaii, Dec 10-13, 2012

L.K. Mestha, A.E. Gil, and P.K. Gurram, “Adaptive Gamut Mapping Retrieval for Imaging Devices”, 3rd XIG Research Conference, April, 27th-29th,  2010

J.E. Elliot, P. Paul, and L.K. Mestha, “Xerographic Dmax Controls”, 3rd XIG Research Conference, April, 27th-29th,  2010

E. Dalal, W. Wu, L.K. Mestha, A.E. Gil, P. Crean, H. Madhu, G. Pennington, O. Vargas, T. Wade, C. Blair, “Minimizing spectrophotometer impact on Spot Color Accuracy”, 3rd XIG Research Conference, April, 27th-29th,  2010

S. Zhu, S.A. Dianat, and L.K. Mestha, “Point-and-click region based method for color editing and control for digital color printers”, 2010 IEEE Int. Conf. on Image Processing, September 26-29, 2010

S.A. Dianat, B.Brewington, L.K. Mestha, “A multidimensional smooth curve fitting algorithm with applications to digital color printers”, 2009 IEEE International Conference on Image Processing (ICIP2009), Cairo, Egypt, Nov 7th-10th, 2009

L.K. Mestha, A.E. Gil,  Y.R. Wang, M.S. Maltz and R. Bala, “Recent developments towards control-based color profiling technology”, IS&T’s 25th International Conference on Digital Printing Technologies (NIP25), Louiseville, KY, Sept 20-24th, 2009

S.A. Dianat, and L.K. Mestha, “Model Predictive Control Methods for Toner Concentration Control System”, IS&T’s 25th International Conference on Digital Printing Technologies (NIP25), Louiseville, KY, Sept 20-24th, 2009

Gary Skinner, L.K. Mestha, Paul Bonino, Stuart Schweid, Thermo-chromaticity & Spectral Compensation methods for inline embedded spectrophotometers, Proceedings of 2nd Annual Xerox Research & Technology Conference, May 13th-15th, Webster, NY, 2008

Alvaro Gil, L.K. Mestha, Matthew Hoffmann, Spot color rendition with Automated Spot Color Editor Technology, Proceedings of 2nd Annual Xerox Research & Technology Conference, May 13th-15th, Webster, NY, 2008

L.K. Mestha, G. Skinner and M. Maltz Hyper-extended gamut for extending the color measurement gamut of inline spectrophotometers, Proceedings of 2nd Annual Xerox Research & Technology Conference, May 13th-15th, Webster, NY, 2008

Alvaro Gil, L.K. Mestha, Marty Maltz, Merit based Gamut Mapping for Rendering Chromatic Colors, Proceedings of 2nd Annual Xerox Research & Technology Conference, May 13th-15th, Webster, NY, 2008

Alvaro Gil, L.K. Mestha, Cooperative Neighbor Driven Profiling for High Quality Color Printing, Proceedings of 2nd Annual Xerox Research & Technology Conference, May 13th-15th, Webster, NY, 2008

H. Hindi, J Liu, L.K. Mestha A Poisson partial differential equation (PDE) approach to function approximation and learning for color modeling, Proceedings of 2nd Annual Xerox Research & Technology Conference, May 13th-15th, Webster, NY, 2008

L.K. Mestha, Z. Fan, R. Bala, A. Gil, YR Wang, M. Maltz, S. Schweid, Efficient printer color management techniques for multiple media and halftones based on principal components analysis, Proceedings of 2nd Annual Xerox Research & Technology Conference, May 13th-15th, Webster, NY, 2008

L.K. Mestha, Marty Maltz, Raja Bala, Alvaro Gil, Yao Rong Wang, Stuart Schweid, Matthew Hoffmann, Debbie Wickham, Richard Howe, Advances towards high quality color profiling, Proceedings of 2nd Annual Xerox Research & Technology Conference, May 13th-15th, Webster, NY, 2008

P.M. Gulvin, P. Lin, L.K. Mestha, Y.R. Wang, MEMS Fabry-Perot Hyperspectral Sensor, Proceedings of the Xerox Innovation Group Conference, Rochester, New York, October 10-12, 2006

L.K. Mestha, FF. Hubble III, T.L. Love, G Skinner, K.J. Mihalyov, D.A. Robbins, and D.M. Diehl, Low Cost LED Based Spectrophotometer, ICIS ’06, International Congress of Imaging Science, Rochester, New York, May 7-12 2006

S. Dianat, L.K. Mestha, A. Mathew, Dynamic Optimization Algorithm for Generating Inverse Printer Maps with Reduced Measurements, IEEE Int. Conference on Acoustics, Speech, and Signal Processing, May 14-19, 2006, Toulouse, France

L.K. Mestha, E.R. Viturro, Y.R. Wang, S.A. Dianat, Gray Balance Control Loop for Digital Color Printing Systems, IS&T’s 21st International Conference on Digital Printing Technologies (NIP21), Baltimore, MD, Sept 18-22nd, 2005

P.K. Gurram, S.A. Dianat, L.K. Mestha, R. Bala, Comparison of 1-D, 2-D and 3-D Printer Calibration Algorithms with Printer Drift, IS&T’s 21st International Conference on Digital Printing Technologies (NIP21), Baltimore, MD, Sept 18-22nd, 2005

L.K. Mestha, Control Advances in Production Printing and Publishing Systems, Proceedings of the International Conference on Digital Printing Technologies (NIP20), The Society for Imaging Science and Technology,  Oct 31st – Nov 5th 2004

L.K. Mestha, M. Enzien, C.B. Duke, D. Platteter, S.B. Bolte, J. Lanphere, D. Viassolo, K. Mihalyov, R. Scarlata, L. Purvis, B. Mara, D. Thompson, M. Martin, D. Pavlovic, M. Adiletta, M. Webster, M. Gwaltney, Control elements in production printing and publishing systems, Proceedings of IEEE Controls and Decision Conference, Dec 2003

L.K. Mestha, Y.R. Wang, M.A. Scheuer, T.E. Thieret, A Multilevel Modular Control Architecture for Image Reproduction, Proceedings of IEEE Conference on Controls Applications, Sept 1998

L.K. Mestha, Y.R. Wang, S. Dianat, E. Jackson, T. Thieret, P.P. Khargonekar, D.E. Koditschek, Toward a Control Oriented Model of Xerographic Marking Engines, Proceedings of IEEE Controls and Decision Conference, Dec 1996

Y.R. Wang and L.K. Mestha, Modified Kalman Filter for Reducing the Effect of Noise in Toner Concentration Control, Proceedings of IEEE Controls and Decision Conference, Dec 1996

L.K. Mestha, Control Engineering for Color Printing, Proceedings of IEEE Conference on Controls Applications, Sept 1996

L.K. Mestha, J. Mangino, V. Brouk, T. Uher, and R.C. Webber, Low power RF beam control electronics for the low energy booster, Proceedings of the Fifth International Industrial Symposium on the Super Collider, San Francisco, CA, 6-8 May 1993 [Used routinely in Fermilab National Accelerator Laboratory]

L.K. Mestha, V. Brouk, R.C. Webber, J. Mangino, and T. Uher, A digital beam phase loop for the low energy booster, Proceeding of the 1993 IEEE Particle Acclerator Conference, Washington, DC, 17-21 May 1993

L.K. Mestha, C.M. Kwan, and K.S. Yeung, General time-varying state-space control model and its application for transient beam loading compensation, Proceeding of the 1993 IEEE Particle Accelerator Conference, Washington, DC, 17-21 May 1993

L.K. Mestha, C.M. Kwan, J. Mangino and K.S. Yeung, A time domain control algorithm for global RF feedback loops, Proceeding of the Third European Particle Accelerator Conference, Berlin, Germany, 24-28 March 1992

L.K. Mestha, C.M. Kwan, and R.C. Webber, A general control model for designing beam control feedback loops, Proceeding of the Third European Particle Accelerator Conference, Berlin, Germany, 24-28 March 1992

L.K. Mestha, and K.S. Yeung, Synchronization of a variable frequency source with a fixed frequency source using a sliding-mode controller, Proceeding of the 1991 IEEE Particle Accelerator Conference, San Francisco, CA, 6-9 May 1991

L.K. Mestha, and K.S. Yeung, Sliding-mode controller for RF cavity tuning loop, Proceeding of the 1991 IEEE Particle Accelerator Conference, San Francisco, CA, 6-9 May 1991

L.K. Mestha, J. Mangino, J. Santana, and R. Webber, Early stages in the development of the global RF feedback for the SSC low energy booster, Proceeding of the Third International Symposium on the Super Collider, Atlanta, GA, 13-15 March 1991

D.J. Martin, L.K. Mestha, S.A. Miller, and R. Talman, Early instrumentation projects at the SSC, Proceedings of the Second International Industrial Symposium on the Super Collider, Miami Beach, Fl, 14-16 March 1990

L.K. Mestha, A controlled master frequency oscillator for the SSC low energy booster, Accelerator Instrumentation Second Annual Workshop, Batavia, IL,  SSCL-343, AIP Conference Proceeding No. 229, 1990

L.K. Mestha, P.D. Evans, Optimization of losses in PWM inverters, IEE Conference on Power Electronics and Variable Drives, London, UK, July 1988

L.K. Mestha, P.D. Evans, Mechanism of torque production in an induction stepping motor, IEE Conference on Electrical Machines and Drives, London, UK, 1986

Documented Technical Reports (material not published in papers):

L.K. Mestha, Digital feedback control for R.F. cavity tuning, Rutherford Appleton Laboratory, Accelerator Development Division, Control paper No. ISISI/CON/P2/89, 1989

L.K. Mestha, The application of system identification techniques to an R.F. cavity tuning loop, Report No. RAL-89-101, Sept. 1989

L.K. Mestha, Digital feedback control for radial beam position, Rutherford Appleton Laboratory, Report No. RAL-89-091, Aug. 1989

L.K. Mestha, Particle tracking code for simulating global R.F. feedback, Super Conducting Super Collider Laboratory report, SSCL-506, September 1991

L.K. Mestha, C.M. Kwan, and R.C. Webber, A general control model for designing beam control feedback loops, Proceedings of the Third European Particle Accelerator Conference, Berlin, Germany, 24-28 March 1992. Also available as Super Conducting Super Collider Laboratory report, SSCL-Preprint 72, March 1992

L.K. Mestha, Parasitic experiments on Fermilab booster LLRF systems, Super Conducting Super Collider Laboratory report, SSCL-559, November 1992

Patents

US Patent 8724168, Updating a smoothness constrained cluster model for color control in a color management system, (W. Wu, L.K. Mestha, E.N. Dalal), May 2014

US Patent 8715202, Minimally invasive image-based determination of carbon dioxide (CO.sub.2) concentration in exhaled breath, (G.C. Cardoso, L.K. Mestha, B. Xu), May 2014

US Patent 8712126, Web-based system and method for video analysis, (N.M. Piratla, L.K. Mestha, M. Sampath), April 2014

US Patent 8699103, System and method for dynamically generated uniform color objects, (L.K. Mestha, Y.R. Wang, Z. Fan), April 2014

US Patent 8693050, Controlling process color in a color adjustment system, (L.K. Mestha, W. Dong), April 2014

US Patent 8670153, Attribute driven gamut mapping via a minimized multi-objective cumulative cost function, (A.E. Gil, L.K. Mestha, W. Wu, E.N. Dalal), Mar 2014

US Patent 8654402, Pitch based high quantization halftone dot linearization for rendering high quality color images, (L.K. Mestha, R. Howe, R. Bala), Feb 2014

US Patent 8643852, Model based detection and compensation of glitches in color measurement systems, (L.K. Mestha, Y.R. Wang, K.J. Mihalyov), Feb 2014

US Patent 8617081, Estimating cardiac pulse recovery from multi-channel source data via constrained source separation, (L.K. Mestha, S. Kyal, G.R. Tsouri, S.A. Dianat, B. Xu), Dec 2013

US Patent 8610959, Updating a fleet CMYK to engine cmyk LUT in a color management strategy, (Y.R. Wang, L.K. Mestha, M.S. Maltz), Dec 2013

US Patent 8611608, Front seat vehicle occupancy detection via seat pattern recognition, (Z. Fan, A. Islam, P. Paul, B. Xu, L.K. Mestha), Dec 2013

US Patent 8600227, A multi-filter array for a multi-resolution multi-spectral camera, (B. Xu, L.K. Mestha, Y.R. Wang, P. Paul), Dec 2013

US Patent 8600213, Filtering source video data via independent component selection, (L.K. Mestha, T. Tanaka),  Dec 2013

US Patent 8599432, Spot color printing with non-standard gamuts achieved with process setpoint adjustment, (L.K. Mestha, T. Love, Ta-Chen Hsu), Dec 2013

US Patent 8587657, Determining a number of objects in an IR image, (Y.R. Wang, Z. Fan, L.K. Mestha), Nov 19th 2013

US Patent 8570442, Hyperspectral image reconstruction via a compressed sensing framework, (L.K. Mestha, A.E. Gil), Oct 29th 2013

US Patent 8564830, Sensitivity Matrix Determination Via Chain Rule Of Differentiation, (L.K. Mestha, S. Dianat), Oct 22nd 2013

US Patent 8547613, Compensating for print engine change in a document reproduction device, (L.K. Mestha, M.S. Maltz, Y.R. Wang), Oct 1st

US Patent 8531734, A cluster model for controlling color in a color marking device, (L.K. Mestha, E.N. Dalal, W. Wu), Sept 10th 2013

US Patent 8526727, Hierarchical multidimensional lookup table generation, (M.S. Maltz, R. Bala, L.K. Mestha), Sept 3rd 2013

US Patent 8520074, Determining a total number of people in an IR image obtained via an IR imaging system, (Y.R. Wang, Z. Fan, L.K. Mestha), Aug 27th  2013

US Patent 8514470, Digital printing control using a spectrophotometer, (J.G. Elliot, L.K. Mestha, P. Paul, D.C. Craig, B.R. Conrow, C.A. Steurrys), Aug 20th 2013

US Patent 8509495, Subcutaneous Vein Pattern Detection Via Multi-Spectral IR Imaging In An Identity Verification System ( B. Xu, L.K. Mestha), Aug 13th 2013

US Patent 8488192, Method for mapping an out-of-gamut color using a reference gamut mapping (L.K. Mestha, P.K. Gurram), July 16th 2013

US Patent 8457415, Post-Processing a multi-spectral image for enhanced object identification, (Y.R. Wang, L.K. Mestha), June 4th 2013

US Patent 8456720, Reducing noise induced  by color mixing spot color recipe search, (L.K. Mestha, A.E. Gil, P.A. Crean), June 4th 2013

US Patent 8456701, Reference color difference quantity for spot color applications, (L.K. Mestha, Yonghui Zhao, Y.R. Wang), June 4th 2013

US Patent 8456700, Spectral matching guide for spot color print applications, (L.K. Mestha, Yonghui Zhao, Y.R. Wang), June 4th 2013

US Patent 8456698, Adaptive illumination independent matching of spot colors using various gamut mapping techniques, (A.E. Gil, Y.R. Wang, L.K. Mestha), June 4th 2013

US Patent 8456698, Adaptive illumination independent matching of spot colors, (L.K. Mestha, Y.R. Wang), June 4th 2013

US Patent 8451495, Color inconstancy guide for spot color print applications, (L.K. Mestha, Yonghui Zhao, Y.R. Wang), May 28th 2013

US Patent 8441691, Reducing the size of a high resolution profile lookup table, (L.K. Mestha, P.K. Gurram), May 14th 2013

US Patent 8441685, Optimal spot color recipes using variable GCR profiles, (W. Wu, E.N. Dalal, A.E. Gil, L.K. Mestha) , May 14th  2013

US Patent 8441680, Black point compensation in a TIPP architecture, (Y.R. Wang, L.K. Mestha), May 14th 2013

US Patent 8417135, Methods to control appearance of gloss levels for printed text and images, (L.K. Mestha, P.A. Crean), April 9th 2013

US Patent 8390885, Methods and system for improved color characterization, (Juan Liu, Haitham Hindi, L.K. Mestha, K.J. Mihalyov), Mar 5th 2013

US Patent 8390882, Systems and methods for estimating the color of coated prints,  (E.N. Dalal, L.K. Mestha), Mar 5th 2013

US Patent 8379267, A method to retrieve a gamut mapping in an image processing system, (L.K. Mestha, A.E. Gil), Feb 19th 2013

US Patent 8358453, Control based iterative profiling methods for improving color rendering performance of non-linear print engines, (L.K. Mestha, A.E. Gil), Jan 22nd 2013

US Patent 8351100, Method to create spot colors with white and CMYK toner and achieve color consistency, (L.K. Mestha, G. Brewington), Jan 8th 2013

US Patent 8351081, Digital printing control using a spectrophotometer, (J.G. Elliot, L.K. Mestha, P. Paul, D.C. Craig, B.R. Conrow, C.A. Steurrys), Jan 8th 2013

US Patent 8340937, Characterization of a model-based spectral reflectance sensing device, G.W. Skinner, S. Seyfried, L.K. Mestha, Dec 25th 2012

US Patent 8335017, Spot color rendering via feedback-based multi-objective optimization, (A.E. Gil, L.K. Mestha, W. Wu, E.N. Dalal), Dec 18th 2012

US Patent 8314979, Color management methods and systems to adaptively tune colors for image marking devices, (L.K. Mestha, M.F. Hoffman), Nov 20th 2012

US Patent 8294948, Image-based color printer fractal gamut extensions achieved with process set point adjustment, (L.K. Mestha, R. Palghat), Oct 23rd 2012

US Patent 8294956,  A finishing control system using inline sensing with clear toner, (L.K. Mestha, P.S. Fisher), Oct 23rd 2012

US Patent 8270029, Methods, apparatus and systems for using  black-only on the neutral axis in color management profiles, (A.E. Gil, L.K. Mestha, J.M. Sanchez), Sept 18th 2012

US Patent 8228556 Control system for suppressing black in images, (L.K. Mestha, M. Maltz), July 24th 2012

US Patent 8210690 Projector based on tunable individually-addressable fabry-perot filters, (P Gulvin, L.K. Mestha, Y.R. Wang, P Lin) , July 3rd 2012

US Patent 8203752, Printer profiling methods, apparatus and systems for determining device and gain matrix values, (M.S. Maltz, A.E. Gil, L.K. Mestha), June 2012

US Patent 8199360, Cooperative neighbor printing system profile methods and systems, (A.E. Gil, L.K. Mestha), June 2012

US Patent 8179566, A method for classifying a printer gamut into subgamuts for improved spot color accuracy, (L.K. Mestha, A.E. Gil, M. Hoffmann), May 2012

US Patent 8159715, Method, apparatus and systems to retrieve GCRS from historical database, (L.K. Mestha, A.E. Gil, Y.R. Wang, Z. Fan), April 2012

US Patent 8154765, Methods and algorithms for adjusting gloss levels in printers, (C. Purdum, L.K. Mestha, M. Maltz, F.J. Ramsey, A.E. Gil), April 2012

US Patent 8150153, Ray-based compression mapping in a color management system, (L.K. Mestha), April 2012

US Patent 8149459, Mapping an out-of-gamut color to a surface of a color gamut, (L.K. Mestha, A.E. Gil), April 2012

US Patent 8145078, Toner concentration system control with state estimators and state feedback methods, (L.K. Mestha, S.A. Dianat, B. Venkitaraman, D. Kreckel), March 2012

US Patent 8134740, Spot color controls and method, (A.E. Gil, L.K. Mestha), March 2012

US Patent 8134547,  Merit based gamut mapping for color management system, (A.E. Gil, L.K. Mestha, M. Maltz,), March 2012

US Patent 8117183 Accurate content-based image and retrieval system, (L.K. Mestha, S.A. Dianat), Feb 2012

US Patent 8103092 Determining whether a color is inside or outside a boundary surface of a color gamut, (L.K. Mestha, A.E. Gil), Jan 2012

US Patent 8095226 Methods and systems to schedule gains in process control loops, (L.K. Mestha, P.K. Gurram), Jan 2012

US Patent 8073237 A job integrity sensing with clear tone, output management and control system, (L.K. Mestha, P.S. Fisher), Dec 6th 2011

US Patent 8072646 Apparatus and method for color control of a clear coated image on media, (L.K. Mestha, P.S. Fisher), Dec 6th 2011

US Patent 8054505 Method, apparatus and system for matching color gamuts of multiple image transfer devices, (L.K. Mestha, P.K. Gurram, A.E. Gil, R. Palghat), Nov 8th 2011

US Patent 8055165 Active Image State Control with Distributed Actuators and Sensors on Development Rolls, (L.K. Mestha, R. Palghat, J. Kubby, D. Mashtare), Nov 8th 2011

US Patent 8055166 Active Image State Control with Linear Distributed Actuators on Development Rolls, (L.K. Mestha, R. Palghat, J. Shaw, D. Mashtare, J. Kubby), Nov 8th 2011

US Patent 8049924 Methods and apparatus for color control of coated images on a printed media, (L.K. Mestha, P.S. Fisher), Nov 1st 2011

US patent 8050601 Smart donor rolls using individually addressable piezoelectric actuators, (P. Lin, B. Xu, L.K. Mestha), Nov 1st 2011

US Patent 8023156 Image output color management system and method, (L.K. Mestha, Y.R. Wang, Z. Fan, A.E. Gil, M.F. Hoffmann), Sept 20th 2011

RE42,673 State-space based modeling of pixel elements of a dynamically varying color marking device, (L.K. Mestha), Sept 6th 2011

US Patent 8014024 Gray balance for a printing system of multiple marking engines, (E.R. Viturro, L.K. Mestha), Sept 6th 2011

US Patent 8014033 Image output color management system and method, (Y.R. Wang, L.K. Mestha, Z. Fan, A.E. Gil), Sept 6th 2011

US Patent 7990592 Methods and systems to produce consistent spot colors for multi-color print engines, (L.K. Mestha, A.E. Gil), Aug 2nd 2011

US Patent 7969625 Pitch to pitch online gray balance calibration with dynamic highlight and shadow controls, (E.R. Viturro, L.K. Mestha, J. Hancock, T. Love), June 28th 2011

US Patent 7969624 Method and system for identifying optimal media and color for calibration and control, (L.K. Mestha, Y.R. Wang, Z. Fan, A.E. Gil), June 28th 2011

US Patent 7961351 Methodology for developing color models and printer sensitivity functions for spot colors and profiles, (Y.R. Wang, L.K. Mestha, A.E. Gil), June 14th 2011

US Patent 7961322 Method for conditional application of color measurement error compensation in spectral sensors, (GW. Skinner, L.K. Mestha, PS Bonino), June 14th 2011

US Patent 7952759 Methods, apparatus and systems for blending multiple GCRS, (Y.R. Wang, A.E. Gil, L.K. Mestha, M.S. Maltz), May 31st 2011

US Patent 7929887 Direct imaging system with addressable actuators on a development belt, (L.K. Mestha, P. Lin, B. Xu, J. Shaw, R. Palghat, P. Gulvin), April 19th 2011

US Patent 7911623 Fabry-Perot piezoelectric tunable filter, (P. Lin, P. Gulvin, Y.R. Wang, L.K. Mestha), March 22nd 2011

US Patent 7884964 Methods and systems for controlling out-of-gamut memory and index colors, (M.S. Maltz, R. Bala, L.K. Mestha), Feb 8th 2011

US Patent 7873309 Addressable Actuators for a Digital Development System, (L.K. Mestha, J. Shaw, R. Palghat, T. Retzlaff, P. Gulvin, Peter Michael), Jan 18th 2011

US Patent 7869748 Direct Imaging System with Addressable Actuators on a Development Roll, (L.K. Mestha, J. Shaw, R. Palghat, T. Retzlaff, P. Gulvin, P. Lin, B. Xu), Jan 11th 2011

US Patent 7864320 Method to minimize instrument differences in color management functions, (P.S. Bonino, L.K. Mestha, G.W. Skinner), Jan 4th 2011

US Patent 7847976 Input output color management system and method, (S.A. Schweid, L.K. Mestha), Dec 7th 2010

US Patent 7839498 Reference database and method for determining spectra using measurements from an LED color sensor, and method of generating a reference database, (L.K. Mestha, S.A. Dianat, F.G. Polo, G.W. Skinner), Nov 23rd 2010

US Patent 7835036 Method to automatically identify and compensate for substrate differences using a sensor, (L.K. Mestha, R. Bala, R. Eschbach), Nov 16th 2010

US Patent 7835033 Gamut boundary separated print system profiling methods and systems, (R. Bala, M.S. Martin, L.K. Mestha, A.E. Gil), Nov 16th 2010

US Patent 7804614 Method and system for acquisition and storage of image job model including image information and imaging device production state performance information, (L.K. Mestha, A.L. McCarthy, S.V. Revankar), Sept 28th 2010

US Patent 7800779 System and Method for Image Based Control Using Inline Sensors, (Z. Fan, L.K. Mestha, Y.R. Wang, S. Wang), Sept 21st, 2010

US Patent 7782490 Sensitivity matrix determination for adaptive color control, (L.K. Mestha, S.A. Dianat), Aug 24th 2010

US Patent 7773222 UV enhanced full width array scanning spectrophotometer, (L.K. Mestha), Aug 10th 2010

US Patent 7768682 Method and apparatus for optimum black component determination for gray component replacement, (L.K. Mestha, Y.R. Wang, A.E. Gil, M. Maltz, R. Bala), Aug 3rd 2010

US Patent 7768672 Spot color control system and method, (A.E. Gil, L.K. Mestha, M.F. Hoffmann), Aug 3rd, 2010

US Patent 7751734 Color sensor to measure single separation, mixed color or IOI patches, (L.K. Mestha, T.L. Love, D.M. Diehl, D.A. Robbins) , July 6th 2010

US Patent 7738140, System and method for automated spot color editor, (J.D. Hancock, P.S. Fisher, L.K. Mestha, K.J. Mihalyov, T. Love, P. Crean, M. Hoffman), June 15th 2010

US Patent 7734131 Fabry-Perot Tunable Filter using a bonded pair of transparent substrates, (P. Lin, P. Gulvin, Y.R. Wang, L.K. Mestha), June 8th 2010

US Patent 7729015 Methods and apparatuses for controlling print density, (H. Mizes, R.P. Loce, L.K. Mestha, P. Paul), June 1st 2010

US Patent 7706031 Pitch to pitch online gray balance calibration with dynamic highlight and shadow controls, (E.R. Viturro, L.K. Mestha, J. Hancock, T. Love), Sept 2010

US Patent 7684084 Multiple dimensional color conversion to minimize interpolation error, (Z. Fan, M.S. Maltz, L.K. Mestha, Y.R. Wang, A.E. Gil), March 23rd 2010

US Patent 7684082 Method and system for compensating for thermochromaticity errors in inline spectrophotometers, (L.K. Mestha, T.L. Love, D.M. Diehl, D.A. Robbins), March 23rd 2010

US Patent 7652806 Optimal node placement for multi-dimensional profile LUTs for arbitrary media and halftones using parameterized minimization, (Stuart Schweid, L.K. Mestha, Zeke Fan, A. Gil), Jan 26th 2010

US Patent 7639410 Optimal test patch selection for multi-media printing systems using low rank approximation, (Y.R. Wang, L.K. Mestha, Z Fan, A.E. Gil), Dec 29th 2009

US Patent 7633647 Method for spatial color calibration using hybrid sensing systems, (L.K. Mestha, E.R. Viturro),  Dec 15th 2009

US Patent 7628493 Projector based on tunable individually-addressable fabry-perot filters, (P Gulvin, L.K. Mestha, Y.R. Wang, P Lin) , Dec 8th 2009

US Patent 7623278 MEMS Fabry-Perot inline color scanner for printing applications using stationary membranes, (L.K. Mestha, P. Gulvin, P. Lin, Y.R. Wang), Nov 24th 2009

US Patent 7589837 Multiple tile calibration method for color sensors, (Y.R. Wang, L.K. Mestha, P.M. Gulvin, P. Lin), Sept 15th 2009

US Patent 7590282 Optimal test patch level selection for systems that are modeled using low rank eigen functions, with applications to feedback controls, (Z. Fan, L.K. Mestha, Y.R. Wang, R. Loce, Yeqing Zhang), Sept 15th 2009

US Patent 7583418 Array based sensor to measure single separation or mixed color (or IOI) patches on the photoreceptor using MEMS based hyperspectral imaging technology, (L.K. Mestha, P. Gulvin, P. Lin, Y.R. Wang), Sept 1st 2009

US Patent 7561133 Systems and methods for device independent display using tunable individually-addressable Fabry-Perot membranes, (L.K. Mestha, P. Gulvin, P. Lin, Y.R. Wang), July 14th 2009

US Patent 7555396 Method and system to personalize sensor characterizing reference database in multiple LED spectrophotometers, (L.K. Mestha), June 30th 2009

US Patent 7505173 System and method for spatial gray balance calibration using hybrid sensing system, (E.R. Viturro, L.K. Mestha), March 17th 2009

US Patent 7513952 Model based detection and compensation of glitches in color measurement systems, (L.K. Mestha, Y.R. Wang, K.J. Mihalyov), April 7th, 2009

US Patent 7483186 Pitch to pitch online gray balance calibration, (E.R. Viturro, L.K. Mestha, J.D. Hancock, T.L. Love), Jan 27th 2009

US Patent 7471385 Systems and methods for selecting a reference database for determining a spectrum of an object based on fluorescence of the object, (L.K. Mestha, F. Hubble, K.J. Mihalyov, T.L. Love, G.W. Skinner), Dec 30th, 2008.

US Patent 7417746 Fabry-Perot tunable filter systems and methods, (P. Lin, L.K. Mestha, P. Gulvin, Y.R. Wang), Aug 26th 2008

US Patent 7397581 TRC Smoothing algorithm to improve image contours in 1D color controls, (L.K. Mestha, S. Dianat), July 8th , 2008

US Patent 7373851 State-space based modeling of pixel elements of a dynamically varying color marking device, (L.K. Mestha), May 20th 2008

US Patent 7355752 Two-dimensional calibration architectures for color devices, (G. Sharma, R. Bala, J.R.N. Van de Capelle, M. Malz, L.K. Mestha), April 8th 2008

US Patent 7339704 A method for standardizing input CMYK values for clustered printing environments, (L.K. Mestha, N. Zeck, G. Sharma, K. Mihalyov), March 4th 2008

US Patent 7385704, Two-dimensional spectral cameras and methods for capturing spectral information using two-dimensional spectral cameras, (L.K. Mestha, J Kubby, YR Wang), June 10th 2008

US Patent 7383261 Reference database and method for determining spectra using measurements from an LED color sensor, and method of generating a reference database, (L.K. Mestha, S. Dianat, F.G. Polo, G. Skinner),  June 3rd 2008

US Patent 7355714 Reconfigurable MEMS Fabry-Perot tunable matrix filter systems and methods, (Y.R. Wang, P. Gulvin, L.K. Mestha, P. Lin), April 8th 2008

US Patent 7333208  Full Width Array Mechanically Tunable Spectrophotometer, (L.K. Mestha, Y.R. Wang, J. Kubby), Feb 19th, 2008

US Patent 7307752 On-line calibration system for a dynamically varying color marking device, (L.K. Mestha, P.A. Crean, M.S. Maltz, R.J. Rolleston, Y.R. Wang, E. Jackson, R. Bala), Dec 11th 2007

US Patent 7295340  Systems and methods for obtaining a spatial color profile, and calibrating a marking system, (L.K. Mestha, S.B. Bolte, E.S. Saber, S.P. Updegraff), Nov 13th, 2007.

US Patent 7277196, Iterative printer control and color balancing system and method using a high quantization resolution halftone array to achieve improved image quality with reduced processing overhead, (Jean-Pierre R.N. Van de Capelle, L.K. Mestha, R.P. Loce, R. Bala, M.S. Maltz, P.A. Crean), Oct 2nd 2007.

US Patent 7206099, Media/screen look-up-table for color consistency, (G.T. Brewington, P.A. Crean, L.K. Mestha, G.W. Skinner), April 17th 2007

US Patent 7307720 Method for corrected spectrophotometer output for measurements on multiple substrates, (L.K. Mestha, M.B. Miroslav), Dec 11th 2007

US Patent 7283240 Spectrophotometer target distance variation compensation, (L.K. Mestha, T.Love, P. Paul,  C. Fillion), Oct 16th, 2007

US Patent 7271910 Systems and methods for compensating for temperature induced spectral emission variations in LED based color parameter measuring devices,  (P. Paul, L.K. Mestha, C. Fillion, E.R. Viturro), Sept 8th, 2007

US Patent 7259853 Systems and Methods for Augmenting Spectral Range of an LED Spectrophotometer, ( F. Hubble, T. Love, L.K. Mestha, D. Robbins),  Aug 21st, 2007

US Patent 7110143  Accurate printing of proprietary mark patterns and colors, (J. Bares, M.R. Furst, L.K. Mestha, S.J. Harrington, E. Jackson), Sept 19th 2006

US Patent 7069164 Method for calibrating a marking system to maintain color output consistency across multiple printers, (E.R. Viturro, L.K. Mestha), June 27th, 2006

US Patent 7110142 Systems and methods for sensing marking substrate area coverage using a spectrophotometer, (L.K. Mestha, E.S. Saber), Sept 19th 2006

US Patent 6934053 Methods for producing device and illumination independent color reproduction, (L.K. Mestha, S.A. Dianat), Aug 23rd 2005

US Patent 6975949 Full Width Array Scanning Spectrophotometer (L.K. Mestha, Steve Bolte, Jagdish Tandon), Dec 13th 2005

US Patent 6809837 On-line model prediction and calibration system for a dynamically varying color reproduction device, (L.K. Mestha, O.Y. Ramirez), Oct 26th 2004

US Patent 6757076 Systems and methods for device independent color control to achieve accurate color proofing and reproduction, (L.K. Mestha, F.F. Hubble III, M.R. Furst), June 29th 2004

US Patent 6744531 Color adjustment apparatus and method (L.K. Mestha, E. Jackson, Y.R. Wang, M.E. Banton, P.A. Crean, S.J. Harrington, E.J. Solcz), June 1st 2004

US Patent 6750442 Use of spectral sensors for automatic media identification and improved scanner correction, R. Bala, L.K. Mestha, R.J. Rolleston, June 15th, 2004

US Patent 6721692 Systems and methods for determining spectra using dynamic least squares algorithms with measurements from LED color sensor,  (L.K. Mestha, S. Dianat), April 13th 2004

US Patent 6690471 Color imager bar based spectrophotometer for color printer color control system, (J.C. Tandon, L.K. Mestha), Feb 10th 2004

US Patent 6636628 Iteratively clustered interpolation for geometrical interpolation of an irregularly spaced multidimensional color space (Y.R. Wang, L.K. Mestha, D.E. Viassolo, S.A. Dianat), October 2003

US Patent 6538770 Color printer color control system using dual mode banner color test sheets (L.K. Mestha), March 2003

US Patent 6650416 Color image bar based spectrophotometer photodetector optical orientation, (J.C. Tandon, L.K. Mestha, F.F. Hubble III), Nov 18th 2003 [extension of US Patent6556300]

US Patent 6639669 Diagnostics for color printer on-line spectrophotometer control system, (F.F. Hubble III, T.L. Love, L.K. Mestha, G.W. Skinner, D.M. Diehl, R.E. Grace, E. Jackson, Y.R. Wang), Oct 28th 2003

US Patent 6621576 Color imager bar based spectrophotometer for color printer color control system, (J. Tandon, L. Mestha), September 16, 2003.

US Patent 6603551 Color measurement of angularly color variant textiles (L.K. Mestha, F.F. Hubble III, T.L. Love, D.A. Robbins, G.W. Skinner) Aug 5th 2003

US Patent 6587793 Systems and methods for determining spectra using fuzzy inference algorithms with measurements from LED color sensor (D.E. Viassolo, L.K. Mestha) July 1st 2003

US Patent 6584435 Systems and methods for determining spectra using dynamic karhunen-loeve algorithms with measurements from LED color sensor (L.K. Mestha, S.A. Dianat), June 24th 2003

US Patent 6567170 Simultaneous plural colors analysis spectrophotometer, (J.C. Tandon, L.K. Mestha), May 20th 2003

US Patent 6556932 System and method for reconstruction of spectral curves using measurements from a color sensor and a spectral measurement system model, (L.K. Mestha, Y.R. Wang, F.F. Hubble III, T.L. Love), April 29th 2003

US Patent 6556300 Color imager bar based spectrophotometer photodetector optical orientation (J.C. Tandon, L.K. Mestha, F.F. Hubble III), April 29th 2003

US Patent 6351308 Color printer color control system with automatic spectrophotometer calibration system (L.K. Mestha), February 2002

US Patent 6344902 Apparatus and method for using feedback and feedforward in the generation of presentation images in a distributed digital image processing system  (C.B. Duke, L.K. Mestha, M.E. Banton, T.E. Thieret, E.J. Solcz), February 2002

US Patent 6449045 System and method for reconstruction of spectral curves, using measurements from a color sensor and statistical techniques (L.K. Mestha), September 9th, 2002

US Patent 6236474 Device independent color controller and method (L.K. Mestha, S.A. Dianat, M.A. Scheuer), May 22nd, 2001

US Patent 6185385 Apparatus and method for online establishment of print control parameters (L.K. Mestha, Y.R. Wang, J. Buranicz, M. Sampath, M.A. Scheuer), February 6th, 2001

US Patent 6157469 Dynamic device independent image correction method and apparatus (L.K. Mestha), December 2000

US Patent 6021285 Sensorless quality control apparatus used upon malfunction of a quality control sensor and method therefore (L.K. Mestha, S.A. Dianat, Y.R. Wang, P.Y. Li, M.J. Rice), February 2000

US Patent 6052195 Automatic colorant mixing method and apparatus (L.K. Mestha, S.A. Dianat, M.J. Rice, E.B. Caruthers Jr., E.R. Viturro), April 18th, 2000

US Patent 5983065 Method of printing secure documents (J.J. Folkins, M.M. Shahin, C.A. Smith, M.A. Parisi, L.K. Mestha), November 1999

US Patent 5963244 Optimal reconstruction of tone reproduction curve  (L.K. Mestha, Y.R. Wang, S.A. Dianat, P.P. Khargonekar, D. E. Koditschek, E. Jackson, T.E. Thieret), October 1999

US Patent 5950040 Feedback control system for controlling developability of a Xerographic imaging device (L.K. Mestha, M. Sampath, Y.R. Wang), September 1999

US Patent 5884118 Printer having print output linked to scanner input for automated image quality adjustment (L.K. Mestha, D. A. Mantell), March 16th, 1999

US Patent 5839022 Filter for reducing the effect of noise in TC control  (Y.R. Wang, L.K. Mestha), November 1998

US Patent 5754918 Electrostatic control with compensation for coupling effects ( L.K. Mestha, P. Padmanabhan), May 1998

US Patent 5749021 Developed mass per unit area (DMA) controller to correct for development errors (L.K. Mestha, P. Padmanabhan), May 1998

US Patent 5749019 Look up table to control non-linear Xerographic process (L.K. Mestha), May 1998

US Patent 5749020 Coordinitization of tone reproduction curve in terms of basis functions  (L.K. Mestha, Y.R. Wang, S.A. Dianat, P.P. Khargonekar, D. E. Koditschek, E. Jackson, T.E. Thieret), May  1998

US Patent 5717978 Method to model a xerographic system (L.K. Mestha), Feb 10th 1998

US Patent 5708916 Developed mass per unit area controller without using electrostatic measurements ( L.K. Mestha), January 1998

US Patent 5784667 Test patch recognition for the measurement of tone reproduction curve from arbitrary customer images (L.K. Mestha, T.A. Henderson), July 21st, 1998

US Patent 5543896 Method for measurement of tone reproduction curve using a single structured patch, (L.K. Mestha), August 6th 1996

US Patent 5298867 Phase-locked loop with controlled phase slippage (L.K. Mestha), March 29th 1994 [allows phase-locking of two variable oscillator with a fixed frequency oscillator using modern controls]

US Patent 5481182 Up/down spectrum scaling of signals (G.G. Nadkarni, L.K. Mestha), Jan 2nd 1996