摘要:
Techniques related to color analysis are disclosed herein. In an example, substrate locations on a printed pattern are selected based on a set of measurements related to substrate-height. Further, color of the printed pattern is determined at the selected locations.
摘要:
Techniques related to color analysis are disclosed herein. In an example, substrate locations on a printed pattern are selected based on a set of measurements related to substrate-height. Further, color of the printed pattern is determined at the selected locations.
摘要:
Techniques related to printing are described herein. According to an example, color patches are to be printed on a substrate. The substrate can be positioned on a substrate support for operation of a color sensor in a color measurement zone. Dimension and location in the substrate of the color patches are selected such that, for each color patch, at least a portion of the color patch can be positioned on a support projection in the color measurement zone. In some examples, color analysis techniques are described.
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.
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.
摘要:
Method of determining a color gamut of a predetermined print system, comprising determining ink restrictions of the print system, generating all NP states of the print system, generating a convex hull of area coverages of NPs that do not exceed said ink restrictions, determining which NP states are outside of the convex hull, mapping NP states that are outside of the convex hull onto the convex hull, re-expressing the mapped NP states as area coverages of NPs, and sampling the convex hull in a colorimetrically predetermined way.
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 printer is provided comprising a storage section arranged to store medium profile information; and a communication section arranged to obtain the medium profile information via a network, wherein the communication section is further arranged to communicate the medium profile information to an image processing section.
摘要:
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.
摘要:
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.