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

System and method for image dependent black generation using the human contrast function's sensitivity to high frequencies in the luminous channel

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

1. •Automatic creation of book sections for multiple-printer output
   

2. •A method of collecting Human Visual System (HVS) data and processing the data for grayscale printer emulation
   

3. •Automatic vector color-description replacement with preferred color description within a digital vector drawing or page-layout document.
   

4. •Capturing data conversion errors in a halftone process
   

5. •Elimination of partial halftone dots by combining isotropic screens with cluster-dot screens
   

6. •Metadata controlled multi-phase halftone
   

7. •A method to produce a halftone bit-mask lookup table from two or more halftone threshold arrays
   

Published Trade Secrets

1. 
   

2. •Icefields standard error diffusion
   

3. •Quadtone reproduction resulting in a significant increase in gray levels from an 8-bit grayscale image
   

4. •Halftone conversion to another halftone
   

5. •Soft-proofing algorithm to read and display dot-screen data
   

6. •Quadtone ink density chemistry
   

Trade Secrets

1. •Calculation of the coordinates of two colors within a predetermined color gamut base on one known color coordinate
   

2. •Discrete array movement through a bitmap field with out padding
   

3. •Icefields low-resolution error diffusion
   

4. •Icefields high-resolution error diffusion
   

5. •RGB color space conversion to CMYK halftones
   

6. •Duotone to CMYK conversion
   

7. •RGB to CMYK duotone conversion
   

8. •RGB to duotone to conversions
   

9. •Quadtone ink chemistry ratios (The first quadtone inkset)
   

10. •Decorative halftone-dot gradient screening program
    

11. •Cirlipse halftone dot function (The first PostScript elliptical dot)
    

12. •Bilevel hybrid FM screens for Canon printers
    

13. •Halftone uniquely suited for the automotive silkscreen printing operation
    

14. •Screening technology for stamp making equipment
    

Selected Publications

1. •Using Errors in Halftoning to Increase Reproduction Accuracy,
   

2. IS&T/SPIE EI 2006
   

3. Original research describing how to capture data lost in the contone to halftone process
   

4. 
   

5. •Building a Contone to Halftone RIP tutorial, IS&T NIP21 2005
   

6. 
   

7. •Memory Colors Test Forms: Representation and Evaluation,
   

8. IS&T/SPIE EI 2004
   

9. Original research connecting memory color to objects and language
   

10. 
    

11. •Image Quality and Halftoning tutorial, IS&T PICS 2002 and 2003
    

12. 
    

13. •The Technology of Duotone Color Transformations in a Color-Managed Workflow, IS&T/SPIE EI 2003
    

14. Survey of duotone to color space transformations
    

15. 
    

16. •Re-purposing Device-Dependent Screens for Unintended Printers,
    

17. IS&T NIP 2001
    

18. Halftone to halftone transformations not requiring inverse transforms
    

19. 
    

20. •Analysis of a Threshold Modulation Dither Using Space Curve Point Movement, Forward Propagation and Noise Removal, SPIE EI 2000
    

21. Technical description of Herron’s Standard FM screen
    

22. 
    

23. •The Technology Used for Quadtone Inkjet Printing, SPIE EI 1999
    

24. Original research describing printing with four and six shades of gray ink
    

25. 
    

26. •Recent Progress in Digital Halftoning II, (2 papers) IS&T publisher, 1999
    

27. 
    

28. •Color Management without Cost, Graphic Exchange magazine, 1998
    

29. 
    

30. •Color Gamut Analysis of Frequency Modulated Screen Reproduction,
    

31. IS&T PICS 1998
    

32. Original research describing how various halftones determine the shape of the color gamut
    

33. 
    

34. •An Exploration of the Pantone Hexachrome Six-Color System Reproduced by Stochastic Screens,
    

35. Proceedings of IS&T’s Fourth Color Imaging Conference, 1996
    

36. 
    

37. •An Analysis of the Hexachrome Color Mixing System,
    

38. Graphic Exchange Magazine, 1996
    

39. 
    

40. •Image Mapping to Control Frequency Modulated Screening,
    

41. Proceeding of IS&T’s Fourth Technical Symposium on Prepress, 1995
    

42. Original research describing segmenting an image for object appropriate halftones