Abstract: Method of generating a CIElab to Neugebauer Primary area coverages interface for a print system, comprising selecting area coverages of Neugebauer Primaries and printing corresponding patches, measuring the CIE XYZ coordinates of the patches, converting the CIE XYZ coordinates to corresponding CIE Lab coordinates, and relating the CIE Lab coordinates to the NPacs.

Abstract: Method of setting up a color separation table for a specific print system, comprising finding first NP (Neugebauer Primary) area coverages of a specific print system that correspond to color values, adding second NP area coverages by converting halftone data from at least one pre-determined pair of halftone data and corresponding color value to NP area coverages, and generating a color separation table arranged as input for a halftone process that comprises color values linked to the corresponding first and second NP area coverages.

Abstract: Method of computing a convex hull in a predetermined color space, comprising determining a print attribute value range pertaining to a reference print attribute value, selecting base NP (Neugebauer Primary) area coverages, comprising area coverages of single NPs and combined NPs, having print attribute values in the print attribute value range, printing and measuring patches corresponding to the base NP area coverages, computing linear combinations of the base NP area coverages, and assigning one of the base NP area coverage or the linear combination of base NP area coverages to the corresponding color, depending on which is closest to the reference print attribute value.

Abstract: A method is provided of personalizing color reproduction of an output device by determining a user-specific color mapping. A user is enabled to individually select different color reproductions of a plurality of different test images according to the user's preferences, wherein the different color reproductions are associated with different color mappings. The test images are reproduced by the output device or a display device simulating the output device. The user-specific color mapping is determined by combining the color mappings of the selected color reproductions.

Abstract: The invention relates to a method of forming a color selection including selected color points, the method comprising: providing a first cluster in a color space, the cluster being associated to a first color representation system; providing a second cluster in the color space, the cluster being associated to a second color representation system, whereby the second cluster differs from the first cluster; providing a predetermined color point in the color space; include in the color selection at least a first selected color point and a second selected color point, the first selected color point being the point of the first cluster which among all points of the first cluster is closest to the predetermined color point and the second selected color point being the point of the second cluster which among all points of the of the second cluster is closest to the predetermined color point.

Abstract: A system is disclosed comprising a color image producing device for providing a test pattern on a medium, said test pattern comprising a plurality of color patches, said test pattern having a principal orientation axis under a non-perpendicular angle ? with the propagation direction of the medium through said color image producing device; and a color measurement device coupled to receive the medium from the color image producing device and arranged to propagate the medium in said propagation direction, the color measurement device being further arranged to measure the colors of the respective patches of the medium during said propagation, the color measurement device comprising a color sensor mounted on the carriage oriented substantially perpendicularly to the propagation direction. The present application further discloses a color image producing device and a color measurement device that can be used in such a system, and a method for measuring colors with such a system.

Abstract: A system for generating digital swatch books, comprising a simulation component for generating, based on a set of standard reference colors and based on at least one reproduction system profile representing a reproduction system's color reproduction characteristics, digital swatch book information representing a simulated set of reference colors associated with the original set of reference colors, as reproduced by the reproduction system; the system further comprising a portable document format generation component for generating, from said digital swatch book information, a multi-layer portable document format file comprising a first layer encoding first swatch book output information for viewing the digital swatch book on a display device, and a second layer encoding second swatch book output information for printing the digital swatch book on a printing device.

Abstract: A color transformation table is constructed in an imaging device. Unsmoothed entries are placed in a table. The unsmoothed entries are replaced by smoothed entries. The smoothed entries are indexed by a color dimensional value for each color dimension in a first color space. Each smoothed entry is a color dimensional value for a color dimension within a second color space. A first unsmoothed entry is replaced with a first smoothed entry, so that the first smoothed entry is a weighted mean of a subset of unsmoothed entries. The subset of unsmoothed entries includes the first unsmoothed entry and other unsmoothed entries that are indexed by the same color dimensional values as the first unsmoothed entry for all but a first color dimension in the first color space.

Abstract: A method for printing a coordinate pattern on a medium includes assigning a pattern to the medium. The pattern is formed on the medium with fixer. A method of calculating a position of an object in relation to the medium using the pattern is disclosed. A predetermined wavelength of electromagnetic radiation is projected onto the pattern and a presence of absence of emittance from the fixer of the pattern is detected. A medium including a substrate having a coordinate pattern overlying at least one side of the substrate is further disclosed. The coordinate pattern includes a means for fluorescing when subjected to a predetermined wavelength of electromagnetic radiation. In another embodiment, a system for forming a substantially invisible coordinate pattern on a medium is disclosed.

Abstract: A method for implementing a secure printing campaign to thwart counterfeiting is provided. The method includes the steps of selecting a first secure print technology and a second secure print technology that is distinct from the first secure print technology, selecting a first secure print variable for the first secure print technology and a second secure print variable for the second secure print technology, and establishing a first plurality of discrete values for the first secure print variable and a second plurality of discrete values for the second secure print variable.

Abstract: A method of reproducing an image, comprising: creating a, or using an already existing, bitmap-input image; finding zones in the input image containing text; determining colors of pixels, characters, or larger text items in the text zones; reproducing the image, wherein pixels, characters or larger text items with a color near to a primary color are reproduced in the primary color.

Abstract: A color image processor is configured to locate at least two zones within a document. Within the zones, content types are recognized, wherein the content types may include: text and lines; graphic images; photographic images; and background. A color rendering intent is applied to each of the at least two zones based on the content type within the zone. The zones are then merged into an image.

Abstract: The invention relates to a color printing device, whereby the color printing device comprises a reciprocating color measurement device and a reciprocating optical density sensor, to a mobile carriage comprising a color printhead, a color measurement device and an optical density sensor and to a color measurement method comprising the following steps: identify the position of a pattern on a two-dimensional media using a mobile optical density sensor; derive the position of a color patch on the media from the position of the pattern; measure the color of the color patch using a color measurement device.

Abstract: A system for generating digital swatch books, comprising a simulation component for generating, based on a set of standard reference colors and based on at least one reproduction system profile representing a reproduction system's color reproduction characteristics, digital swatch book information representing a simulated set of reference colors associated with the original set of reference colors, as reproduced by the reproduction system; the system further comprising a portable document format generation component for generating, from said digital swatch book information, a multi-layer portable document format file comprising a first layer encoding first swatch book output information for viewing the digital swatch book on a display device, and a second layer encoding second swatch book output information for printing the digital swatch book on a printing device.