Abstract: A method for correcting cartridge color shifts for imaging with an imaging apparatus includes determining a spectral signature band for each colorant to yield a plurality of spectral signature bands; determining a minimum number of the spectral signature bands from the plurality of spectral signature bands to form a group of spectral signature bands that are applicable to all colorants of the plurality of colorants; determining a primary colorant profile for each colorant of the plurality of colorants of the cartridge based on the minimum number of the spectral signature bands; determining primary colorant shift data based on the primary colorant profile for each colorant and based on a standard cartridge primary colorant profile; estimating combined colorant shift data using the primary colorant shift data; and generating color correction data based on the combined colorant shift data for use in imaging with an imaging apparatus using the cartridge.

Abstract: A method of selecting inks for use in imaging with an imaging apparatus includes establishing a high fidelity colorant cube having a plurality of vertex lines pertaining to a corresponding plurality of basic inks, and at least one other vertex line pertaining to at least one high fidelity ink; determining first mixing coordinates of the at least one high fidelity ink and the plurality of basic inks for face grids of the high fidelity colorant cube based on a maximum permitted ink amount; determining second mixing coordinates of the at least one high fidelity ink and the plurality of basic inks for interior grids of the high fidelity colorant cube based on the maximum permitted ink amount; and generating a color conversion lookup table based on the first mixing coordinates and the second mixing coordinates for printing with the imaging apparatus.

Abstract: A method of correcting color shift caused by printing with an imaging system using a first cartridge and a second cartridge different from the first cartridge includes determining individual cartridge characterization data based on each of the first cartridge and the second cartridge individually; determining combined cartridge characterization data that characterizes a usage combination of the first cartridge and the second cartridge; and determining color correction data based on the individual cartridge characterization data and the combined cartridge characterization data.

Abstract: A method of selecting inks for use in imaging with an imaging apparatus includes determining a maximum usage of a diluted ink for use in conjunction with a saturated ink based on visual perception characteristics relating to a combination of the diluted ink and the saturated ink; generating an initial colorant space based on the maximum usage of the diluted ink, the initial colorant space expressing an initial usage of the diluted ink and an initial usage of the saturated ink at each point in the initial colorant space; optimizing the initial usage of the diluted ink and the initial usage of the saturated ink in the initial colorant space to generate a final usage of the diluted ink and a final usage of the saturated ink in a final colorant space; and generating a color conversion lookup table based on the final colorant space.

Abstract: A method for converting a source gamut of an image to a destination gamut includes providing an imaging apparatus having a plurality of destination gamuts, determining a source gamut boundary for the source gamut of the image; selecting an appropriate destination gamut from the plurality of destination gamuts based on a desired output; mapping to the appropriate destination gamut based at least in part on the source gamut boundary; and determining a color conversion lookup table based on the mapping to the appropriate destination gamut for use in replicating the image to provide the desired output using the imaging apparatus.

Abstract: A scanning apparatus includes a light source and a plurality of light sensors. The light source and the plurality of light sensors define at least one ultraviolet light channel and at least one visible light channel.

Abstract: A method of printing using a plurality of basic colorants and at least one high fidelity colorant includes obtaining system variables that impact high fidelity color printing; and printing with an optimized usage of the plurality of basic colorants and the at least one high fidelity colorant based on a colorant level, wherein a reduced output of the at least one high fidelity colorant will occur if an average colorant level of the at least one high fidelity colorant is lower than an average colorant level of the plurality of basic colorants.

Abstract: A method for correcting neutral color shift in a production cartridge for use in an imaging system includes determining a colorant increment data based on a standard cartridge neutral variation signature color data and a standard cartridge neutral sensitivity signature color data associated with a standard cartridge, and based on a production cartridge neutral variation signature color data and a production cartridge neutral sensitivity signature color data associated with the production cartridge, and using the colorant increment data to correct the neutral color shift.

Abstract: A method for calibrating a production printing cartridge for use in an imaging system includes the steps of obtaining first standard cartridge signature color data associated with a standard printing cartridge and a first substrate, obtaining second standard cartridge signature color data associated with the standard printing cartridge and a second substrate, obtaining first production cartridge signature color data associated with the production printing cartridge and the first substrate, and estimating second production cartridge signature color data associated with the production printing cartridge and the second substrate based on the first standard cartridge signature color data, the second standard cartridge signature color data, and the first production cartridge signature color data.

Abstract: Methods and systems of processing an image. One embodiment includes applying a controlled, adaptive histogram equalization technique to improve the quality of an image. Another embodiment may include classifying an image. Both embodiments may use a concentration ratio of an image or portions thereof.

Abstract: A method of gamut mapping includes the steps of defining a mapping function establishing a continuous first derivative of change of at least one color space component from a first color gamut to a second color gamut, and applying the function to first color gamut data for the at least one color space component.

Abstract: A method for correcting color shift in an imaging system, including an imaging object, and a standard color conversion lookup table associated with the imaging object, includes measuring a plurality of test patches to obtain color data associated with the imaging object. A signature color data lookup table is generated, based on the color data, and is combined with the standard color conversion lookup table to generate a composite color conversion lookup table for use with the imaging object.