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Curriculum
Vitae Imaging Scientist Adjunct
Professor, Purdue University Stow,
MA ru@ulichney.com +1-978-310-1961 |
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Publications
R. Ulichney and M. Gaubatz,
“Hiding Data in the Blue Channel”, Color
Imaging: Displaying, Processing, Hardcopy, and Applications Session, IS&T
Electronic Imaging, Jan, 2020. Z. Zhao, Y. Xu, R. Ulichney, M. Gaubatz, S. Pollard, J.
Allebach, “Data bearing halftone image alignment and assessment on 3D
surface”, Color Imaging:
Displaying, Processing, Hardcopy, and Applications Session, IS&T
Electronic Imaging, Jan, 2020. J. Liu, A. Jumabayeva, Y. Xu, Y. Wang,
T. Frank, S. Gat, O. Bat Mor, B. Yotam, R. Ulichney, J. Allebach, “New
results for aperiodic, dispersed-dot halftoning”, Color Imaging: Displaying, Processing, Hardcopy, and Applications
Session, IS&T Electronic Imaging, Jan, 2020. Z. Zhao, R. Ulichney, M. Gaubatz, S. Pollard, J. Allebach,
“Advances in the Decoding of Data Bearing Halftone Images”, IS&T Printing for Fabrication, San
Francisco, CA, Sep 29 – Oct 2, 2019. M. Gaubatz, R. Ulichney, “Barcodes on Non-Flat Surfaces”, IS&T Printing for Fabrication, San
Francisco, CA, Sep 29 – Oct 2, 2019. A. Hodgson, R. Ulichney, “The Smartphone as a Security Print
Inspection Tool”, IS&T Printing for
Fabrication, Dresden, Germany, Sep 24-27, 2018. Y. Sun, R. Ulichney, M. Gaubatz, Matthew, S. Pollard, S. Simske, J. Allebach, “Analysis of a visually significant
bar code system based on circular coding”, Color Imaging: Displaying, Processing, Hardcopy, and Applications
Session, IS&T Electronic Imaging, Feb, 2018. [pdf,
928 KB] R. Ulichney, A. Fitzhugh, “Density Matrix Generation for 3D
Printing”, IS&T Printing for Fabrication (NIP 33), Denver, CO, Nov 5-9,
2017. [pdf,
2.0 MB] P. Morovič, J. Morovič, J. Gondek and R. Ulichney, “Direct Pattern
Control Halftoning of Neugebauer Primaries”, IEEE Transactions on Image Processing, vol. 26, no. 9, pp.
4404-4413, Sep. 2017. [pdf, 10.5 MB] R. Mao, U. Sarkar, R. Ulichney, J. Allebach, "3D
Halftoning", Color Imaging:
Displaying, Processing, Hardcopy, and Applications Conference, IS&T Electronic Imaging, Feb,
2017. [pdf,
1.94 MB] W. Xi, T. Frank, U. Sarkar, Y. Ben-Shoshan, R. Ulichney, J.
Allebach, "Color halftoning based on multi-stage, multi-pass,
clustered-DBS", Color Imaging:
Displaying, Processing, Hardcopy, and Applications Conference, IS&T
Electronic Imaging, Feb, 2017. W. Jiang, W. Xi, U. Sarkar, R. Ulichney, J. Allebach, "Color
halftoning based on Neugebauer Primary Area Coverage", Color Imaging: Displaying, Processing,
Hardcopy, and Applications Conference, IS&T Electronic Imaging, Feb,
2017. P. Morovič, J. Morovič, J. Gondek, M. Gaubatz, R. Ulichney,
“PARAWACS: color halftoning with a single selector matrix”, IS&T’s 24th Color and Imaging
Conference (CIC24), San Diego, CA, Nov 7-11, 2016. [pdf,
6.2 MB] R. Ulichney, Y. Sun, M. Gaubatz, S. Pollard, “Effect of
Non-Integer Scaling on the Recovery of Data Bearing Marks,” IS&T Printing for Fabrication (NIP 32),
Manchester, UK, Sep 12-16, 2016. [pdf,
1.24 MB] A. Jumabayeva, T. Frank, Y.
Ben-Shoshan, R. Ulichney, J. Allebach, “Single Separation Analysis for
Clustered-Dot Halftones”, IEEE Int.
Conf. on Image Processing (ICIP), Phoenix, AZ, Sep 25-28, 2016. Y. Chen, T. Kashti, M. Fischer, D. Shaked, R. Ulichney, and J.
Allebach, “The Lattice-Based Screen Set: A Square N-Color All-Orders
Moiré-Free Screen Set”, IEEE
Transactions on Image Processing, vol 25, no 4, pp 1873-1886, Apr 2016. R. Ulichney, M. Gaubatz, C. Tai, S. Pollard, M. Gottwals, I. Tastl, “Using a
Data-bearing Frame to Capture an Extended Target”, IS&T International
Symposium on Electronic Imaging, Color
Imaging: Displaying, Processing, Hardcopy, and Applications, Feb 2016. [pdf,
1.17 MB] C. Tai, R. Ulichney, J. Allebach, “Effects on Fourier Peaks Used
for Periodic Pattern Detection”, IS&T International Symposium on
Electronic Imaging, Image Quality and
System Performance Conference, Feb 2016. [pdf, 1.19 MB] A. Jumabayeva, T. Frank, R. Ulichney,
J. Allebach, "HVS-Based Model for Superposition of Two Color
Halftones," IS&T International Symposium on Electronic Imaging, Color Imaging: Displaying, Processing,
Hardcopy, and Applications Conference, Feb 2016. A. Jumabayeva, Y. Chen, T. Frank, R.
Ulichney, and J. Allebach, “Design of Irregular Screen Sets that Generate
Maximally Smooth Halftone Patterns”, Proc.
SPIE 9395, Color Imaging XX:
Displaying, Processing, Hardcopy, and Applications, Feb. 2015. S. Pollard, R. Ulichney, M. Gaubatz, “Recovering Planar
Projections of Printed Cluster-Dot Halftones”, ICIP 2014, IEEE International Conference on Image Processing,
Paris, France, Oct 27-30, 2014. [pdf,
622 KB] L. Zhang, A. Vies, R. Ulichney, J. Allebach, “Binary Text Image
File Preprocessing to Account for Printer Dot Gain”, ICIP 2014, IEEE International Conference on Image Processing,
Paris, France, Oct 27-30, 2014. R. Ulichney, M. Gaubatz, S. Simske,
“Circular Coding with Interleaving Phase”, DocEng 2014, ACM Symposium on Document Engineering, Fort Collins, CO,
Sep. 16-19, 2014. [pdf,
282 KB] R. Ulichney, S. Pollard, M. Gaubatz, “Fast Mobile Stegatone Detection using the Frequency Domain”, IS&T NIP30 (30th Int. Conf. on Digital
Printing Technologies), Philadelphia, PA, Sep 7-11, 2014. [pdf, 2.41
MB] C. Tang, A. Veis, R. Ulichney, J. Allebach, “Irregular
clustered-dot periodic halftone screen design”, Proc. SPIE 9015, Color Imaging XIX: Displaying, Processing, Hardcopy,
and Applications, Jan 2014. J. Youn, J. Sun, Y. Ju, T. Kashti, T. Frank, D. Kella, M.
Fischer, R. Ulichney, G. Adams, J. Allebach, “Effect of Image Capture Device
on the Accuracy of Black-Box Printer Models”, Proc. SPIE 9015, Color Imaging XIX: Displaying, Processing, Hardcopy,
and Applications, Jan 2014. R. Ulichney, M. Gaubatz, S. Simske,
“Circular Coding for Data Embedding”, IS&T
NIP29 (29th Int. Conf. on Digital Printing Technologies), Seattle, WA,
Sep 2013. [pdf,
886 KB] Y. Ju, T. Kashti, T. Frank, D. Kella, D. Shaked, M. Fischer, R.
Ulichney, and J. Allebach, “Black-Box Models for Laser Electrophotographic
Printers – Recent Progress”, IS&T
NIP29 (29th Int. Conf. on Digital Printing Technologies), Seattle, WA,
Sep 2013. S. Pollard, R. Ulichney, M. Gaubatz, S. Simske,
“Forensic Authentication of Data Bearing Halftones”, VISAPP 2013 (8th International Conference on Computer Vision Theory
and Applications), Barcelona, Spain, Feb 21-24, 2013. [pdf,
521 KB] Y. Chen, R. Ulichney M. Gaubatz, S. Pollard, C. Tai, J.
Allebach, “Stegatone Performance Characterization”,
Media Watermarking, Security, and
Forensics 2013, IS&T/SPIE Electronic Imaging Symposium, San Francisco
Airport, CA, 8665-27, February 3-7, 2013. [pdf,
886 KB] X. Zhang, A. Veis, R. Ulichney, J. Allebach, “Multilevel
Halftone Screen Design: Keeping Texture or Keeping Smoothness?”, IEEE International Conference on Image
Processing (ICIP), Orlando, FL, Sep 30-Oct 3, 2012. [pdf,
578 KB] R. Ulichney, S. Pollard, M. Gaubatz, S. Simske,
“Combined Covert Data Embedding and Forensic Markings for Graphic Objects”, IS&T NIP28 (28th Int. Conf. on Digital
Printing Technologies), Quebec City, Canada, Sep 2012. [pdf, 567 KB] M. Gaubatz, S. Pollard, R. Ulichney, S. Simske,
“Mobile Capture of High-Resolution Data-Bearing Markings”, IS&T NIP28 (28th Int. Conf. on Digital
Printing Technologies), Quebec City, Canada, Sep 2012. [pdf, 708 KB] Y. Zhang, J. Recker, R.
Ulichney, G. Beretta, I. Tastl, I. Lin, J. Owens,
“Plane-dependent Error Diffusion on a GPU”, Parallel Algorithms, IS&T/SPIE Electronic Imaging Symposium,
San Francisco Airport, CA, 8295B-59, January 22-26, 2012. [pdf, 778
KB] Y. Ju, X. Zhang, D. Saxena, T.
Kashti, D. Kella, D. Shaked, M. Fischer, R. Ulichney, J. Allebach, “Modeling
large-area influence in digital halftoning for electrophotographic printers”,
Color Imaging XVII: Displaying,
Processing, Hardcopy, and Applications, IS&T/SPIE Electronic Imaging
Symposium, San Francisco Airport, CA, 8292-35, January 22-26, 2012. [pdf,
384 KB] X. Zhang, Y. Ju, T. Kashti, D.
Kella, T. Frank, D. Shaked, R. Ulichney, M. Fischer, J. Allebach, “Measuring
the modulation transfer function of image capture devices”, Image Quality and System Performance IX,
IS&T/SPIE Electronic Imaging Symposium, San Francisco Airport, CA,
8293-06, January 22-26, 2012. [pdf,
930 KB] R. Ulichney, M. Gaubatz, “Tracing the Source of Printed Documents with Edge-Refined Stegatones”, IS&T NIP27 (27th Int. Conf. on Digital Printing Technologies), Minneapolis, MN, Sep 2011. [pdf, 426 KB] R. Ulichney, I. Tastl, E. Hoarau, “Analog Image Backup with
Steganographic Halftones”, Color
Imaging XVI: Displaying, Processing, Hardcopy, and Applications,
IS&T/SPIE Electronic Imaging Symposium, San Francisco Airport, CA,
7866-53, January 23-27, 2011. [pdf, 1.26 MB] Y. Zhang, J. Recker, R.
Ulichney, G. Beretta, I. Tastl, I. Lin, J. Owens,
“A Parallel Error Diffusion Implementation on a GPU”, Parallel Processing for Imaging Applications, IS&T/SPIE
Electronic Imaging Symposium, San Francisco Airport, CA, 7872-20, January
23-27, 2011. [pdf, 571
KB] R. Ulichney, M. Gaubatz, and S. Simske,
“Encoding Information in Clustered-Dot Halftones”, IS&T NIP26 (26th Int. Conf. on Digital Printing Technologies),
Austin, TX, 602-605, Sep 2010. [pdf,
654 KB] R. Ulichney, A. Ghajarnia, and N.
Chang, “Subpixel Measurement of Superimposed Displays”, Society for Information Display (SID) Digest of Technical Papers,
P.170, May 2010. [pdf,
807 KB] R. Ulichney and M. Gaubatz, “Pointing into Remote 3D
Environments”, Multimedia on Mobile
Devices Conference, IS&T/SPIE Electronic Imaging Symposium, San Jose,
CA, 7542-17, January 17-21, 2010. [pdf, 6.10 MB] R. Ulichney, A. Ghajarnia, and N.
Damera-Venkata, “Quantifying the performance of overlapped displays”, Image Quality and System Performance
Conference, IS&T/SPIE Electronic Imaging Symposium, San Jose, CA,
7529-27, January 17-21, 2010. [pdf, 2.26 MB] M. Gaubatz, R. Ulichney, and D. Rouse, “A Low-Complexity
Reduced-Reference Print Identification Algorithm”, ICIP (IEEE International Conference on Image Processing), Cairo,
Egypt, 1289-1292, Nov 2009. [pdf,
136 KB] R. Ulichney, M. Gaubatz, and D. Rouse, D., “High Speed Page
Matching”, IS&T NIP25 (25th Int.
Conf. on Digital Printing Technologies), Louisville, KY, 577-580, Sep.
2009. [pdf, 500 KB] D. Lau, R. Ulichney, “Blue-Noise Halftoning for Hexagonal
Grids”, IEEE Trans. on Image Processing, vol. 15, no. 5, pp.
1270-1284, May, 2006. [pdf, 7.37
MB] R. Ulichney, M. Gaubatz, “Perceptual-Based Correction Of Photo Red-Eye”, Proc. of the 7th IASTED
International Conf. on Signal and Image Processing, Honolulu, HI, Aug
2005. [pdf,
214 KB] W. Allen, R. Ulichney, “Wobulation:
Doubling the Addressed Resolution of Projection Displays”, Society for
Information Display (SID) Digest of Technical Papers, vol. 36, pp. 1514-1517,
May 2005. [pdf,
1.65 MB] R. Ulichney, R. Sukthankar,
“Correcting Luminance for Obliquely-Projected Displays”, Digest of Technical
Papers, Int. Conf. on Consumer Electronics (ICCE), pp. 367-368, Jan. 2005. [pdf,
58 KB] R. Ulichney, M. Gaubatz, JM Van Thong, “RedBot
- a tool for correcting photo red-eye”, Eleventh
Color Imaging Conf., (The Society for
Imaging Science and Technology), Scottsdale, AZ, Nov 2003. [pdf, 120 KB] R. Ulichney, “Method for Increasing Apparent Amplitude
Resolution, and Correcting Luminance Nonuniformity in Projected Displays”, IEEE
International Workshop on Projector-Camera Systems, Nice, France, Oct
2003. [pdf,
80 KB] D. Lau, R. Ulichney, G. Arce, “Fundamental Characteristics of
Halftone Textures: Blue-Noise and Green-Noise”, IEEE Signal Processing
Magazine (Invited Paper), vol. 20, no. 4, pp. 28-38, Jul 2003. [pdf, 2407
KB] M. Gaubatz and R. Ulichney, “Automatic Red-Eye Detection and
Correction”, IEEE International
Conference on Image Processing (ICIP), pp. 804-807, Rochester, NY, Sep
2002. [pdf, 307
KB] R. Ulichney, “A Review of Halftoning Techniques”, Color Imaging: Device-Independent Color, Color Hardcopy,
and Graphic Arts V, Proc. SPIE vol. 3963,
Jan., 2000. [pdf, 244 KB] S. Cheung and R. Ulichney, “Low-Memory
Low-Complexity Inverse Dithering”, Color
Imaging: Device-Independent Color, Color Hardcopy, and Graphic Arts IV, Proc. SPIE vol. 3648, pp. 529-540, Jan 1999. [pdf, 863 KB] S. Cheung and R. Ulichney, “Window-Extent Tradeoffs
in Inverse Dithering”, Sixth Color Imaging Conf., IS&T (The
Society for Imaging Science and Technology, Springfield, VA), pp. 245-248,
Nov 1998. [pdf, 637 KB] R. Ulichney, “One-Dimensional Dithering”, Electronic Imaging:
Processing, Printing, and Publishing in Color, SPIE Vol. 3409, pp. 204-214,
May 1998.
[pdf,
134 KB] R. Ulichney and S. Cheung, “Pixel Bit-Depth Increase by Bit
Replication”, Color Imaging: Device-Independent
Color, Color Hardcopy, and Graphic Arts III, Proc. SPIE vol. 3300, pp. 232-241, Jan 1998. [pdf, 84 KB] L. Seiler and R. Ulichney, “Integrating Video Rendering into
Graphics Accelerator Chips”, Digital Technical Journal, vol. 7, no. 4,
pp. 76-88, 1996.
[pdf,
314 KB] V. Bahl, P. Gauthier, and R. Ulichney, “Software-only
Compression, Rendering, and Playback of Digital Video”, Digital Technical
Journal, vol. 7, no. 4, 52-75, 1996. [pdf, 486 KB] K. Correll and R. Ulichney, “The J300 Family of Video and Audio
Adapters: Architecture and Hardware Design”, Digital Technical Journal, vol.
7, no. 4, pp. 20-33, 1996. [pdf, 277 KB] R. Ulichney, “Forward - Audio and Video Technologies”, Digital
Technical Journal, vol. 7, no. 4, pp. 3-4, 1996. [pdf, 64 KB] R. Ulichney, “Spatial Extent of Void and Cluster Finding
Filters”, IS&T's Eleventh International Congress on Advances in
Non-impact Printing Technologies, (The Society
for Imaging Science and Technology, Springfield, VA), Oct
29-Nov 3, pp. 430-433, 1995. [pdf, 43 KB] R. Ulichney, “Halftone Characterization in the Frequency
Domain”, Proc. IS&T 47th Annual Conf., Rochester, NY, (The Society for Imaging Science and Technology,
Springfield, VA), May 15-20, pp. 464-467, 1994. [pdf, 394
KB] R. Ulichney, “Filter Design for Void-and-Cluster Arrays”, Soc.
for Information Display International Symposium Digest of Tech. Papers, vol.
25, San Jose, CA, June 14-16, pp. 809-812, 1994. [pdf, 65 KB] R. Ulichney, “Video Rendering” [Cover feature], Digital
Technical Journal, vol. 5, no. 2, pp. 9-18, 1993. [pdf, 728 KB] R. Ulichney, “The Void-and-Cluster Method for Generating Dither
Arrays”, Human Vision, Visual Processing, and Digital Display IV, J.
Allebach and B. Rogowitz, eds., Proc. SPIE 1913,
pp. 332-343, 1993. [pdf, 10.9 MB] B. Neidecker-Lutz and R. Ulichney, “Software Motion Pictures”, Digital
Technical Journal, vol. 5, No. 2, pp. 19-27, 1993. [pdf, 1786 KB] R. Ulichney, “Bresenham-Style
Scaling”, Proc. IS&T 46th Annual Conf., Cambridge, MA, May 9-14,
pp. 101-103, 1993. [pdf, 168 KB] T. Mitsa, R. Ulichney, and K. Parker, “The Construction and
Evaluation of Halftone Patterns with Manipulated Power Spectra”, RIDT, The
2nd Intn. Workshop on Raster Imaging and Digital
Typography, Boston, MA, Oct. 15-16, pp. 90-97, 1991. [pdf,
469 KB] K. Parker, T. Mitsa, and R. Ulichney, “A New Algorithm for
Manipulating the Power Spectrum of Halftone Patterns”, SPSE's 7th Int.
Congress on Non-Impact Printing, Portland, OR,
Oct. 10, pp. 471-475, 1991. [pdf,
473 KB] K. Parker, T. Mitsa, and R. Ulichney, “Digital Halftone
Techniques in Medical Imaging”, SPSE's 6th Int. Congress on Non-Impact
Printing, Orlando, FL, Oct. 25, pp. 853-858, 1990. [pdf, 819 KB] R. Ulichney, “Frequency Analysis of Ordered Dither”, Hard
Copy Output, L. Beiser, Ed., Proc. SPIE, vol. 1079, pp. 361-373, 1989. [pdf, 1159 KB] R. Ulichney, “Challenges in Device-Independent Image Rendering”,
Topical Meeting on Applied Vision, 1989 Technical Digest Series, vol.
16, (Optical Society of America, Washington, D.C. 1989), pp. 144-147, 1989. [pdf, 243 KB] R. Ulichney, “Dithering with Blue Noise” [Cover feature], Proceedings
of the IEEE, vol. 76, no. 1, pp. 56-79, 1988. [pdf, 2781 KB] K. Parker, T. Mitsa, and R. Ulichney, “Digital Halftone
Rendering of Medical Ultrasound Images using Blue Noise”, Thirteenth
International Symposium on Ultrasonic Imaging and Tissue Characterization, Arlington,
VA, June 7, 1988. [abstract] R. Ulichney and D. Troxel, “Scaling Binary Images with the
Telescoping Template”, IEEE Trans. on Pattern Analysis and Machine
Intelligence, vol. PAMI-4, no. 4, pp. 331-335, 1982. [pdf, 371
KB] also
in: J. Stoffel, Graphical and Binary Image Processing and
Applications, Dedham, MA: Artech House, pp. 495-505, 1982. [pdf, 403 KB] Books and
Book Contributions
R. Ulichney, "Halftoning",
in Wiley
Encyclopedia of Electrical and Electronics Engineering, Vol. 8, pp. 588-600, John Wiley & Sons, Inc., 1999. [pdf, 2256 KB] R. Rubinstein, Digital
Typography, Reading, MA: Addison-Wesley, pp. 43-47, 1988. R. Ulichney, Digital Halftoning. Cambridge, MA: The MIT Press, 1987. (see
also amazon.com) Theses
R. Ulichney, Digital Halftoning and the Physical Reconstruction
Function, Ph.D. Thesis, M.I.T., Cambridge, MA, 1986. R. Ulichney, Digital Scaling of Binary Images, M.S. Thesis,
M.I.T., Cambridge, MA, 1979. Issued
Patents
G. Smith, R. Ulichney, W. Allen, “Encoded monochrome images of
data-hiding watermarks”, US Patent 11,423,505,
Aug 2022. R. Ulichney, M. Gaubatz, “Encoding information using disjoint
highlight and shadow dot patterns”, US Patent 11,277,539,
Mar, 2022. R. Ulichney, M. Gaubatz, S. Pollard, “Determine image capture
position information based on a quasi-periodic pattern”, US Patent 11,263,784,
Mar, 2022. R. Ulichney, “Density rank matrix normalization for
three-dimensional printing”, US Patent 11,247,401,
Feb, 2022. R. Ulichney, A. Fitzhugh, “Multiscale density threshold matrices
for 3D printing”, US Patent 11,167,481,
Nov, 2021. R. Ulichney, M. Gaubatz, S. Pollard, “Data-bearing medium” (Balanced
Shifting), US Patent 11,113,592,
Sep, 2021. R. Ulichney, M. Gaubatz, S. Pollard, “Recursive halftoning and
gray value substitution” (Multiscale VSBs), US Patent 11,102,376,
Aug, 2021. R. Ulichney, M. Gaubatz, “Encoding dot patterns into printed
images based on source pixel color”, US Patent 11,089,180,
Aug, 2021. R. Ulichney, M. Gaubatz, “Omnidirectional barcode”, US Patent 11,030,502,
Jun, 2021. R. Ulichney, “Density rank matrix generation for
three-dimensional printing”, 11,029,665,
Jun, 2021. M. Gaubatz, S. Simske, R. Ulichney,
“Multi-dimensional cyclic symbols”, US Patent 10,977,466,
Apr, 2021. S. Simske, R. Ulichney, M. Gaubatz,
“M-ary cyclic coding”, US Patent 10,891,704,
Jan, 2021. R. Ulichney, M. Gaubatz, “Encoding information in printed images
by decreasing grayscale pixel values exceeding threshold” (Gray Clipping),
US Patent 10,791,239,
Sep, 2020. S. Simske, R. Ulichney, M. Gaubatz,
“M-ary cyclic coding”, US Patent 10,621,688,
Apr, 2020. Y. Mao, J. Allebach, L. Abelló, J. Vidal, R. Ulichney, U.
Sarkar, “Parallel Image Processes” (TDFED), US Patent 10,592,790,
Mar, 2020. R. Mao, J. Allebach, W. Jiang, L. Rosello, R. Ulichney, U.
Sarkar, “3D printed object halftone image generation containing updated voxel
data”, US Patent 10,587,774,
Mar, 2020. M. Gaubatz, R. Ulichney, S. Simske,
“Groups of phase-invariant codewords”, US Patent 10,560,117,
Feb, 2020. T. Frank, A. Jumabayeva, R. Ulichney,
J. Allebach, Y. Ben-Shoshan, “Assigning Halftone Screens Based on Color and
Content”, US Patent 10,530,967,
Jan, 2020. R. Ulichney, M. Gaubatz, S. Pollard, “Determine Image Capture
Position Information Based on a Quasi-Periodic Pattern” (Corralling a
Target), US Patent 10,521,931,
Dec, 2019. R. Ulichney, M. Gaubatz, S. Pollard, J., “Recursive Halftoning
And Gray Value Substitution”, US Patent 10,362,194,
Jul, 2019. R. Ulichney, M. Gaubatz, S. Pollard, “Determine presence of
quasi-periodic two-dimensional object”, US Patent 10,223,800,
Mar, 2019. R. Ulichney, M. Gaubatz, S. Pollard, “Frequency domain range
determination for a periodic or quasi-periodic target”, US Patent 10,171,723,
Jan, 2019. M. Gaubatz, R. Ulichney, S. Simske,
“Groups of phase invariant codewords”, US Patent 10,171,107,
Jan 2019. J. Aronoff, S. Simske, M. Gaubatz. R. Ulichney, “Multiple payload
pantographs”, US Patent 10,154,165,
Dec, 2018. R.
Ulichney, M. Gaubatz, S. Pollard, “Embedding data in halftone images” (Fixed-size), US Patent 10,027,843,
July, 2018. S.
Pollard, R. Ulichney, M. Gaubatz, “Rapid Image Registration”, US Patent 10,002,438,
June, 2018. S.
Pollard, R. Ulichney, M. Gaubatz, “Recovering Planar Projections”, US Patent 10,002,413,
June, 2018. M.
Gaubatz, R. Ulichney, S. Simske, “Data bearing
medium” (Phase Invariant Codes), US
Patent 9,984,318,
May, 2018. R. Ulichney, S. Pollard, M. Gaubatz, S. Simske,
“Forensic Verification Utilizing Forensic Markings inside Halftones”, US
Patent 9,779,298, Oct, 2017. R. Ulichney, M. Gaubatz, S. Simske,
“Data bearing media” (Offset to encode
Phase), US Patent 9,665,813,
May, 2017. R. Ulichney, M. Gaubatz, S. Simske,
“Data bearing medium” (Interleaving
Payload and Phase), US Patent 9,569,709,
Feb, 2017. R. Ulichney, M. Gaubatz, “Remote-controlled pointing”, US Patent
9,563,293,
Feb, 2017. S. Sirigiri, M. Gaubatz, R. Ulichney,
“Carrier images”, US Patent 9,535,635,
Jan, 2017. R. Ulichney, M. Gaubatz, S. Pollard, S. Simske,
“Document copy with data-bearing halftone image”, US Patent 9,454,721,
Sep, 2016. R. Ulichney, S. Pollard, M. Gaubatz, S. Simske,
“Forensic Verification Utilizing Forensic Markings inside Halftones”, US
Patent 9,373,032,
June, 2016. R. Ulichney, S. Albright, M. Gaubatz, “Systems and methods for tracing
the source of printed pages”, US Patent 9,367,776,
June, 2016. R. Ulichney, S. Pollard, M. Gaubatz, S. Simske,
“Forensic Verification Utilizing Halftone Boundaries”, US Patent 9,361,516,
June 2016. S. Pollard, R. Ulichney, M. Gaubatz, S. Simske,
“Forensic Verification from Halftone Images”, US Patent 9,361,514,
June, 2016. R. Ulichney, J. Recker, I. Tastl, Inter-block data management,
US Patent 8,937,750,
2015. N. Damera-Venkata, R. Ulichney, D. Tretter, System and method
for correcting defective pixels of a display device, US Patent 8,872,869,
2014. R. Ulichney, S. Simske, M. Gaubatz,
Parallel Test Payload, U.S. Patent 8,797,193,
2014. R. Ulichney, M. Gaubatz, D. Rouse, System and Method for Print
Production Sheet Identification, US Patent 8,760,670,
2014. R. Ulichney, An Edge Refinement System, U.S. Patent 8,634,110,
2014. M. Gaubatz and R. Ulichney, Method of robust alignment and
payload recovery for data-bearing images, U.S. Patent 8,594,453,
2013. R. Ulichney, M. Gaubatz, S. Simske,
System and method for creating a data-bearing image, U.S. Patent 8,456,699,
2013. M. Gaubatz, R. Ulichney, Automatic redeye detection based on
redeye and facial metric values, U.S. Patent 8,446,494,
2013. S. Simske, M. Gaubatz, R. Ulichney,
Blur resistant barcode, U.S. Patent 8,376,235,
2013. R. Ulichney, M. Gaubatz, S. Simske,
Payload recovery systems and methods, U.S. Patent 8,284,987,
2012. S. Simske, M. Gaubatz, R. Ulichney,
Blur resistant barcode, U.S. Patent 8,226,010,
2012. R. Ulichney, M. Gaubatz, Perceptually-derived red-eye
correction, U.S. Patent 7,830,418,
2010. R. Ulichney, D Niranjan, and D. Tretter, System and method for
correcting defective pixels of a display device, U.S. Patent 7,453,449,
2008. M. Gaubatz and R. Ulichney, System and method for automatically
detecting and correcting red eye, U.S. Patent 7,155,058,
2006. C. Cheng and R. Ulichney, System and method for interpolating a
color image, U.S. Patent 7,130,491,
2006. F. Dufaux, S. Kang and R. Ulichney, Camera-based document
scanning system using multiple-pass mosaicking, U.S. Patent 7,046,401,
2006. R. Ulichney and R. Sukthankar, System and
method for correcting luminance non-uniformity of obliquely projected images,
U.S. Patent 7,018,050,
2006. R. Ulichney and H. Arora, System and method for increasing
projector amplitude resolution and correcting luminance non-uniformity, U.S.
Patent 6,921,172,
2005. R. Ulichney and H. Arora, Method for Correcting Projector
Luminance Nonuniformity, U.S. Patent 6,817,721,
2004 R. Ulichney, Tone Modifying Dithering System, U.S. Patent 6,690,389,
2004. R. Ulichney, W. Hallahan, Method and apparatus for providing
64-bit YUV to RGB color conversion, U.S. Patent 6,487,308,
2002. S. Cheung, R. Ulichney, R. McNamara, G. Iyengar, Method for
detecting an image edge within a dithered image, U.S. Patent 6,473,525, 2002. R. Ulichney, R. McNamara, An apparatus for generating
one-dimensional dither values, U.S. Patent 6,424,431,
2002. R. Ulichney, S. Cheung, R. McNamara, Increasing the Bit-depth of
and Filtering Dithered Images for the Purpose of Inverse Dithering, U.S.
Patent 6,347,160,
2002. R. Ulichney, Method for generating dither values for
one-dimensional dither arrays, U.S. Patent
6,330,368,
2001. R. Ulichney, R. McNamara, Multi-dimensional dithering using
one-dimensional dither arrays, U.S. Patent
6,278,530,
2001. S. Cheung, R. Ulichney, R. McNamara, G. Iyengar, Selective
filtering of a dithered image for the purpose of inverse dithering, U.S.
Patent 6,222,945,
2001. R. Ulichney, S. Cheung, R. McNamara, G. Iyengar, Method for
Reconstructing a Dithered Image, U.S. Patent 6,185,334,
2001. R. Ulichney, Void and Cluster Apparatus and Method for
Generating Dither Templates, U.S. Patent 6,172,773,
2001. R. Ulichney, Color Adjustment System for YUV to RGB Color
Conversion, U.S. Patent 6,172,714,
2001. S. Cheung, R. Ulichney, R. McNamara, G. Iyengar, Method for Low
Complexity, Low Memory Inverse Dithering, U.S. Patent 6,163,629,
2000. R. Ulichney and S. Cheung, Bit-depth Increase by Bit
Replication, U.S. Patent 6,038,576,
2000. R. Ulichney, Method and Apparatus for Providing 32-bit YUV to
RGB Color Conversion, U.S. Patent 5,920,322,
1999. R. Ulichney, Void and Cluster Apparatus and Method for
Generating Dither Templates, U.S. Patent 5,912,745,
1999. R. Ulichney, Void and Cluster Apparatus and Method for
Generating Dither Templates, U.S. Patent 5,745,259,
1998. R. Ulichney, P. Charles, R. McNamara, Input Modification System
for Multilevel Dithering, U.S. Patent 5,602,941,
1997. R. Ulichney, Imaging Adjustment System for Translating Raw Input
Levels to Adjusted Input Levels, U.S. Patent 5,543,936,
1996. R. Ulichney, Void and Cluster Apparatus and Method for
Generating Dither Templates, U.S. Patent 5,535,020,
1996. R. Ulichney, and P. Bahl, Imaging System with Multilevel
Dithering Using Single Memory, U.S. Patent 5,508,822,
1996. R. Ulichney, Imaging System with Two Level Dithering Using
Comparator, U.S. Patent 5,495,345,
1996. R. Ulichney, Imaging System with Multilevel Dithering Using Two
Memories, U.S. Patent 5,333,262,
1994. R. Ulichney, Imaging System with Multilevel Dithering Using Bit
Shifter, U.S. Patent 5,333,260,
1994. R. Ulichney, Method and apparatus for mapping a digital color
image from a first color space to a second color space, U.S. Patent 5,233,684,
1993. R. Ulichney, System for Producing Dithered Images from
Continuous-tone Image Data, U.S. Patent 4,955,065,
1990. Pending
Patents R. Ulichney, J. Wittkopf, M. Gaubatz, “Three-Dimensional
Latticed Conductive Elements”, 20230288911,
Sep, 2023. M. Gaubatz, R, Ulichney, S. Pollard, “Data Decode” (Fiducial-based
Decoding), WO2022010455A1,
Jan, 2022. Y. Xu, S. Pollard, R. Ulichney, M. Gaubatz, J. Allebach, “Fiducial
Location” (Atomic Growth Alignment), 20230267642,
Aug, 2023. Z. Zhao, R. Ulichney, S. Pollard, M. Gaubatz, J. Allebach, “Fiducial
Patterns” (Piece-wise planar alignment),
20230196707,
Jun, 2023. M. Gaubatz, R. Ulichney, “Encoding Information with Shifted
Linear Patterns” (Scatter Codes), 20230105910,
Aug, 2021. S. Pollard, R. Ulichney, M. Gaubatz, “Recovering Alignment
Grids”, 20220398769,
Dec, 2022. R. Ulichney, M. Gaubatz, “Three-Dimensional Object Marking” (1D
Barcodes through 3D Prints), 20220189101,
Jun, 2022. R. Ulichney, M. Gaubatz, S. Pollard, “Visually significant
marking schemes”, 20210377422,
Dec, 2022. W. Allen, G. Blythe, B. Pickering, T. Sims, S. Simske, R. Ulichney, C. Haas, “Customized order
fulfillment”, 20200387912,
Dec, 2020. M. Gaubatz, S. Simske, R. Ulichney,
“Authentication based on data content and data partitions” (Duel Channel
Security), 20170206535,
Jul, 2017. |