摘要:
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.
摘要:
A method of forming a color selection including selected color points. A first cluster in a color space is provided, the cluster being associated to a first color representation system. A second cluster in the color space is provided, the cluster being associated to a second color representation system, whereby the second cluster differs from the first cluster. A predetermined color point in the color space is provided. Included in the color selection are 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.
摘要:
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.
摘要:
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.
摘要:
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 α 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.
摘要:
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.
摘要:
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 α 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.
摘要:
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.
摘要:
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.
摘要:
A method of calibrating a printer is disclosed. The printer prints a plurality of patches using know color values. At least two patches of each color are printed. The patches are measured to determine a measured color value for each patch. The measured color values are checked for validity. The printer is calibrated using only the valid measured color values.