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Patents
US20070177213
System and method for controlling clustered halftone dot gain
A system for characterizing dot gain in pixel-based document rendering devices, such as a printer, receives information relative to current dot size characteristics of the device relative to variou...
JP2006254439
HALF-TONE RENDERING SYSTEM AND METHOD
To provide improved a half-tone rendering system and a half-tone rendering method. SOLUTION: Electronic document data, comprising image data, are segmented into regions...
US20060197989
Multi-configured halftone system
A hybrid halftoning system and method that provides for improved output image rendering. Electronic document data containing image data is segmented into several regions. These regions include a highlight region, a midtone region and a s...
US20060072127
The present invention is directed to a system and method for increasing the perception of detail in the highlight areas of a digital image during color space conversion using replacement of the gray component in a first color space to a ...
US20060072129
System and method for conversion of duotone images for display
A method for processing an image. The method includes receiving an image having image values and described in a first color space and determining the image color space from a received image. Image values in the first color space are asso...
US20060012829
System and method for tone-dependent multi-frequency halftone screening
The present invention is directed to a system and method for halftone screening. A system for halftone screening includes means adapted to receive image data having a desired number of tonal levels representative of a continuous tone ima...
US20060007492
Method to improve a halftone by combining halftoning with algorithmic processing
The present invention is directed to a system and method for halftone screening. A system for halftone screening includes means adapted to receive image data having a number of tonal levels representative of a continuous tone image. The ...
JP2006101524
IMAGE PROCESSING SYSTEM, IMAGE PROCESSING METHOD, AND IMAGE PROCESSING PROGRAM
To provide a system and a method producible one color of an additive color mixing system about a visual indicator in a monitor etc. from a code of a page description language,...
US20060007493
System and method for metadata controlled multi-configured halftone screening
The present invention is directed to a system and method for halftone screening. A system for halftone screening includes a memory including a look-up table, the look-up table including screen frequency data representative of the selecte...
6976797
Methods and systems for rendering printing marks in multiple device printing environments
Methods and systems for rendering printing marks in multiple-device printing environments such as printshops are disclosed. In general, one or more printers among a plurality of printers in a multiple device printing environment can be i...
7583837
Method and system for preparing grayscale image files for highlight printing on a four color printer
A system converts grayscale image data into device independent image data that mimics highlight printing of the grayscale image at a full color printer. The system is preferably implemented in a plug-in for a document control program so ...
6803921
Use of softproofing to assist in the rendering of images of unknown colorimetry
A method for determining and assigning colorimetry and authorship device information to an image of unknown colorimetry includes iteratively displaying the image on a display device and selecting possible source device profiles for trans...
US20030142113
Hint data editor and method of editing hint data
A hint editor for editing raster content image rendering hints including a hint reader for separating the rendering hints from the image and a hint display for displaying the rendering hints apart from the image. The hint editor can also...
5625766
Software based proofing method for double sided printing
A software based proofing method allowing to proof and measure registration between both sides of a press sheet by displaying, on a color monitor, both sides superimposed on each other. By making the paper appear transparent the front-to...
Note.Stephen Herron the consultant for Creo/Kodak on the project was the provider of the superimposition idea and method.
Patents Proposed and Pending
•Automatic creation of book sections for multiple-printer output
•A method of collecting Human Visual System (HVS) data and processing the data for grayscale printer emulation
•Automatic vector color-description replacement with preferred color description within a digital vector drawing or page-layout document.
•Capturing data conversion errors in a halftone process
•Elimination of partial halftone dots by combining isotropic screens with cluster-dot screens
•Metadata controlled multi-phase halftone
•A method to produce a halftone bit-mask lookup table from two or more halftone threshold arrays
Published Trade Secrets
•Icefields standard error diffusion
•Quadtone reproduction resulting in a significant increase in gray levels from an 8-bit grayscale image
•Halftone conversion to another halftone
•Soft-proofing algorithm to read and display dot-screen data
•Quadtone ink density chemistry
Trade Secrets
•Calculation of the coordinates of two colors within a predetermined color gamut base on one known color coordinate
•Discrete array movement through a bitmap field with out padding
•Icefields low-resolution error diffusion
•Icefields high-resolution error diffusion
•RGB color space conversion to CMYK halftones
•Duotone to CMYK conversion
•RGB to CMYK duotone conversion
•RGB to duotone to conversions
•Quadtone ink chemistry ratios (The first quadtone inkset)
•Decorative halftone-dot gradient screening program
•Cirlipse halftone dot function (The first PostScript elliptical dot)
•Bilevel hybrid FM screens for Canon printers
•Halftone uniquely suited for the automotive silkscreen printing operation
•Screening technology for stamp making equipment
Selected Publications
•Using Errors in Halftoning to Increase Reproduction Accuracy,
IS&T/SPIE EI 2006
Original research describing how to capture data lost in the contone to halftone process
•Building a Contone to Halftone RIP tutorial, IS&T NIP21 2005
•Memory Colors Test Forms: Representation and Evaluation,
IS&T/SPIE EI 2004
Original research connecting memory color to objects and language
•Image Quality and Halftoning tutorial, IS&T PICS 2002 and 2003
•The Technology of Duotone Color Transformations in a Color-Managed Workflow, IS&T/SPIE EI 2003
Survey of duotone to color space transformations
•Re-purposing Device-Dependent Screens for Unintended Printers,
IS&T NIP 2001
Halftone to halftone transformations not requiring inverse transforms
•Analysis of a Threshold Modulation Dither Using Space Curve Point Movement, Forward Propagation and Noise Removal, SPIE EI 2000
Technical description of Herron’s Standard FM screen
•The Technology Used for Quadtone Inkjet Printing, SPIE EI 1999
Original research describing printing with four and six shades of gray ink
•Recent Progress in Digital Halftoning II, (2 papers) IS&T publisher, 1999
•Color Management without Cost, Graphic Exchange magazine, 1998
•Color Gamut Analysis of Frequency Modulated Screen Reproduction,
IS&T PICS 1998
Original research describing how various halftones determine the shape of the color gamut
•An Exploration of the Pantone Hexachrome Six-Color System Reproduced by Stochastic Screens,
Proceedings of IS&T’s Fourth Color Imaging Conference, 1996
•An Analysis of the Hexachrome Color Mixing System,
Graphic Exchange Magazine, 1996
•Image Mapping to Control Frequency Modulated Screening,
Proceeding of IS&T’s Fourth Technical Symposium on Prepress, 1995
Original research describing segmenting an image for object appropriate halftones