Patents by Inventor Marc Mahy

Marc Mahy has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 10097727
    Abstract: A colorant splitting method performed by a colorant splitter wherein an n-dimensional color in an n-dimensional colorant space is converted to an m-dimensional colorant space by a colorant splitting curve set and wherein the colorant splitting curve set is the result of interpolation of a set of colorant splitting curve sets to improve the image quality of reproduced content and to improve the usage of total coverage of the colorants.
    Type: Grant
    Filed: November 25, 2014
    Date of Patent: October 9, 2018
    Assignee: AGFA NV
    Inventors: Koen Vande Velde, Marc Mahy
  • Patent number: 9906690
    Abstract: A standard printer characterization target is printed with a reference printer and measured. From the measured data, a model is derived that describes for each ink the behavior of each individual ink in combination with different combinations of the other inks. In order to reduce the complexity for obtaining a printer model of a second printer, a second target is printed that includes only a subset of the color patches in the standard printer characterization target. With the model and interpolation, it is possible to reconstruct colorimetric data for missing color patches in the reduced target.
    Type: Grant
    Filed: December 15, 2016
    Date of Patent: February 27, 2018
    Assignee: AGFA NV
    Inventors: Koen Vande Velde, Marc Mahy
  • Publication number: 20170180610
    Abstract: A standard printer characterization target is printed with a reference printer and measured. From the measured data, a model is derived that describes for each ink the behavior of each individual ink in combination with different combinations of the other inks. In order to reduce the complexity for obtaining a printer model of a second printer, a second target is printed that includes only a subset of the color patches in the standard printer characterization target. With the model and interpolation, it is possible to reconstruct colorimetric data for missing color patches in the reduced target.
    Type: Application
    Filed: December 15, 2016
    Publication date: June 22, 2017
    Inventors: Koen VANDE VELDE, Marc MAHY
  • Patent number: 9674399
    Abstract: A method including the steps of selecting an n-ink model for a color device, for transferring a set of colorant values in colorant space to a set of color values in color space; selecting a printer characteristic of the n-ink model, wherein the printer characteristic indicates the regularity of the n-ink model; evaluating, for the n-ink model, a set of one or more values and/or ranges for the printer characteristic, thus determining the regularity of the n-ink model; and modifying the n-ink model such that the modified n-ink model is regular, if, based on the evaluation, the n-ink model was not regular.
    Type: Grant
    Filed: February 21, 2013
    Date of Patent: June 6, 2017
    Assignee: AGFA GRAPHICS NV
    Inventors: Marc Mahy, Koen Vande Velde, Dmitry Tunitsky
  • Patent number: 9659215
    Abstract: A raster image processing method and a raster image processor validate content objects in a document based on similarity, especially on continuity, to convert the similar objects with one or more same parameters of an image manipulation method to achieve a correct reproduction of the document.
    Type: Grant
    Filed: October 3, 2014
    Date of Patent: May 23, 2017
    Assignee: AGFA GRAPHICS NV
    Inventors: Marc Mahy, Daniel Saez Trigueros
  • Publication number: 20160301829
    Abstract: A colorant splitting method performed by a colorant splitter wherein an n-dimensional colour in an n-dimensional colorant space is converted to an m-dimensional colorant space by a colorant splitting curve set and wherein the colorant splitting curve set is the result of interpolation of a set of colorant splitting curve sets to improve the image quality of reproduced content and to improve the usage of total coverage of the colorants.
    Type: Application
    Filed: November 25, 2014
    Publication date: October 13, 2016
    Inventors: Koen VANDE VELDE, Marc MAHY
  • Publication number: 20160232407
    Abstract: A raster image processing method and a raster image processor validate content objects in a document based on similarity, especially on continuity, to convert the similar objects with one or more same parameters of an image manipulation method to achieve a correct reproduction of the document.
    Type: Application
    Filed: October 3, 2014
    Publication date: August 11, 2016
    Inventors: Marc MAHY, Daniel SAEZ TRIGUEROS
  • Publication number: 20160112603
    Abstract: A method including the steps of selecting an n-ink model for a color device, for transferring a set of colorant values in colorant space to a set of color values in color space; selecting a printer characteristic of the n-ink model, wherein the printer characteristic indicates the regularity of the n-ink model; evaluating, for the n-ink model, a set of one or more values and/or ranges for the printer characteristic, thus determining the regularity of the n-ink model; and modifying the n-ink model such that the modified n-ink model is regular, if, based on the evaluation, the n-ink model was not regular.
    Type: Application
    Filed: February 21, 2013
    Publication date: April 21, 2016
    Applicant: AGFA GRAPHICS NV
    Inventors: Marc MAHY, Koen VANDE VELDE, Dmitry TUNITSKY
  • Patent number: 8482797
    Abstract: A method for creating a set of metameric printed color patches on a color printer enables visual assessment under a specific illuminant if the colors of a printed product have faded.
    Type: Grant
    Filed: March 2, 2010
    Date of Patent: July 9, 2013
    Assignee: Agfa Graphics NV
    Inventors: Marc Mahy, Koen Vande Velde
  • Patent number: 8270028
    Abstract: The invention deals with a method for replacing the colorant values of a raster image by a new set of colorant values that is for example optimized for a standardized printing process. According to the invention, a forward look up table is identified that transforms the colorant values in the raster image into color values. The color values in this look up table are separated into new colorant values to obtain a colorant to colorant interpolation look up table. This is done by using an inverse transformation that is based on the forward look up table using appropriate separation parameters for the standardized printing process. The method has the advantage that it enables to map pure colorant values in the original image back onto pure colorant values in the transformed image.
    Type: Grant
    Filed: September 27, 2007
    Date of Patent: September 18, 2012
    Assignee: Agfa Graphics NV
    Inventors: Marc Mahy, Wim Cliquet, Stefan Livens
  • Publication number: 20110310415
    Abstract: A method for creating a set of metameric printed color patches on a color printer enables visual assessment under a specific illuminant if the colors of a printed product have faded.
    Type: Application
    Filed: March 2, 2010
    Publication date: December 22, 2011
    Applicant: AGFA GRAPHICS NV
    Inventors: Marc Mahy, Koen Vande Velde
  • Patent number: 8054504
    Abstract: A method separates a color vector into a colorant vector for a printing system that uses more than four colorants, for example cyan, magenta, yellow, black, orange and green colorants. According to the method, the separation process is split up into partial four colorant processes that contain opponent colors. For example, a first partial process is a cyan, magenta, yellow and black process; a second one is an orange, magenta, yellow and black process; and a third one is a cyan, green, yellow and black process. Continuity of magnitudes of the colorants is achieved across the boundaries of the color gamuts of the partial processes by imposing specific constraints on the combinations of colorants to render a given color. A computer implemented system and a print system are based on the method.
    Type: Grant
    Filed: March 1, 2007
    Date of Patent: November 8, 2011
    Assignee: Agfa Graphics NV
    Inventors: Marc Mahy, Francis Verbeeck
  • Patent number: 7742058
    Abstract: An output color profile, such as an ICC output profile, contains a look-up table to separate the color of a pixel, for example a CIELAB color, into a set of colorant values, for example CMYK colorants. In practice, most CMYK images have been separated using one of a limited set of standardized output profiles. The problem to be solved is guessing which one of these standardized output profiles has been used to separate a specific image. For this purpose the CMYK values of the image are analyzed. The analysis involves calculating a distance in the CMYK space between the CMYK values of an image, and the CMYK values produced by different output profiles. A profile is selected based on these distances, for example by selecting the profile yielding the shortest distance. This profile is then used for converting the CMYK colorant values of the image into CIELAB color values.
    Type: Grant
    Filed: January 24, 2007
    Date of Patent: June 22, 2010
    Assignee: Agfa Graphics NV
    Inventors: Marc Mahy, Paul Delabastita
  • Patent number: 7616345
    Abstract: A method for obtaining a first representation of a digital image by means of a first output device and a second representation of the digital image by means of a second output device, wherein the first output device has a first, device dependent, colorant space and the second output device has a second, device dependent, colorant space, the method including (a) determining a transformation for transforming a set of colorant values of a pixel of the digital image from the first to the second colorant space; (b) selecting a particular set of colorant values in the first colorant space; and (c) modifying the transformation for the particular set of colorant values.
    Type: Grant
    Filed: November 20, 2003
    Date of Patent: November 10, 2009
    Assignee: Agfa Graphics NV
    Inventor: Marc Mahy
  • Patent number: 7595910
    Abstract: A method for making a dot for dot proof for a printing device, such as a press, on another device, such as a proofer, the method including (a) inputting, at pixel level, binary or pseudo-binary data indicating at a given pixel screened colorant values of the printing device; (b) inputting contone colorant values of the printing device indicating a color in a neighborhood of the given pixel; (c) outputting colorant values for the other device at the given pixel, based on the input contone colorant values and on the input binary or pseudo-binary data, such that a color match is obtained with a given color behavior of the printing device.
    Type: Grant
    Filed: May 31, 2005
    Date of Patent: September 29, 2009
    Assignee: Agfa Graphics NV
    Inventors: Marc Mahy, Koen Vande Velde
  • Patent number: 7580150
    Abstract: A method and a system for outputting an image having a specific color on an output device, the method including (a) analyzing the image; (b) creating a model for the output device, based on the analysis, wherein the model encompasses the specific color and is made in a particular space having a one-to-one relation to a device independent color space.
    Type: Grant
    Filed: July 9, 2003
    Date of Patent: August 25, 2009
    Assignee: Agfa Graphics NV
    Inventors: Marc Mahy, Francis Verbeeck
  • Publication number: 20090190180
    Abstract: A one dimensional transformation of colorant values before transforming them into a color using a printer model enables linearization of the gradation of each color component as a function of colorant values. The method reduces interpolation error if the printer model uses piecewise linear interpolation.
    Type: Application
    Filed: February 27, 2007
    Publication date: July 30, 2009
    Applicant: Agfa Graphics NV
    Inventors: Francis Verbeeck, Marc Mahy
  • Publication number: 20090086223
    Abstract: The invention deals with a method for replacing the colorant values of a raster image by a new set of colorant values that is for example optimized for a standardized printing process. According to the invention, a forward look up table is identified that transforms the colorant values in the raster image into color values. The color values in this look up table are separated into new colorant values to obtain a colorant to colorant interpolation look up table. This is done by using an inverse transformation that is based on the forward look up table using appropriate separation parameters for the standardized printing process. The method has the advantage that it enables to map pure colorant values in the original image back onto pure colorant values in the transformed image.
    Type: Application
    Filed: September 27, 2007
    Publication date: April 2, 2009
    Inventors: Marc Mahy, Wim Cliquet, Stefan Livens
  • Publication number: 20090009787
    Abstract: A method separates a color vector into a colorant vector for a printing system that uses more than four colorants, for example cyan, magenta, yellow, black, orange and green colorants. According to the method, the separation process is split up into partial four colorant processes that contain opponent colors. For example, a first partial process is a cyan, magenta, yellow and black process; a second one is an orange, magenta, yellow and black process; and a third one is a cyan, green, yellow and black process. Continuity of magnitudes of the colorants is achieved across the boundaries of the color gamuts of the partial processes by imposing specific constraints on the combinations of colorants to render a given color. A computer implemented system and a print system are based on the method.
    Type: Application
    Filed: March 1, 2007
    Publication date: January 8, 2009
    Applicant: AGFA GRAPHICS NV
    Inventors: Marc Mahy, Francis Verbeeck
  • Publication number: 20080174608
    Abstract: An output color profile, such as an ICC output profile, contains a look-up table to separate the color of a pixel, for example a CIELAB color, into a set of colorant values, for example CMYK colorants. In practice, most CMYK images have been separated using one of a limited set of standardized output profiles. The invention deals with the problem of guessing which one of these standardized output profiles has been used to separate a specific image. For this purpose the CMYK values of the image are analyzed. The analysis involves calculating a distance in the CMYK space between the CMYK values of an image, and the CMYK values produced by different output profiles. A profile is selected based on these distances, for example by selecting the profile yielding the shortest distance.
    Type: Application
    Filed: January 24, 2007
    Publication date: July 24, 2008
    Inventors: Marc Mahy, Paul Delabastita