公开(公告)号：US11379161B2

公开(公告)日：2022-07-05

申请号：US16476738

申请日：2017-05-02

Applicant: Hewlett-Packard Development Company, L.P.

Inventor： Peter Morovic ,  Jan Morovic ,  Joan Vidal Fortia ,  Jordi Arnabat Benedicto ,  Javier Maestro Garcia

IPC: G06F3/12 ,  G06F17/18

Abstract: In an example, a method includes acquiring data representing an article to be printed, the data comprising an element set associated with a print addressable location, the element set comprising a first element subset and a second element subset, wherein the first element subset and the second element subset comprise an element identifying a print material selection which is associated with a probability that the print material selection is to be applied to the associated print addressable location. The method further includes determining a first set of cumulative probability values associated with the elements of the first element subset and determining a second set of cumulative probability values associated with the elements of the second element subset. The first set of cumulative probability values may span a first predetermined value range and the second set of cumulative probability values may span a second predetermined value range.

公开(公告)号：US11307027B2

公开(公告)日：2022-04-19

申请号：US16475626

申请日：2017-04-25

Applicant: Hewlett-Packard Development Company, L.P.

Inventor： Peter Morovic ,  Jan Morovic ,  Hector Gomez Minano ,  Marcos Casaldaliga Albisu ,  Joan Jordi Coll Sicluna

IPC: G01B11/30 ,  B41F33/00 ,  G01N21/86

Abstract: A method is described in which a reflection is obtained of a laser light pattern reflected from a substrate. A reflection of diffuse light may be obtained from the substrate. A first parameter may be determined, relating to the substrate from the reflected laser light pattern. A second parameter may be determined, relating to the substrate from the reflected diffuse light and a characteristic of the substrate may be determined from the first and second parameters. A print apparatus and a machine-readable medium are also disclosed.

公开(公告)号：US11265442B2

公开(公告)日：2022-03-01

申请号：US16498594

申请日：2018-05-15

Applicant: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.

Inventor： Peter Morovic ,  Jan Morovic ,  Javier Maestro Garcia

IPC: H04N1/40 ,  H04N1/54 ,  H04N1/62 ,  H04N1/60

Abstract: Certain examples relate to configuring a print processing system to produce rendered color outputs based on desired properties of said outputs using resources available to the print processing system. In these examples, print job data is received comprising image data and print property data. Color mapping data is configured to produce print mapping data based on at least the print property data. Print instructions for an image rendering device are generated based on the print mapping data. The print properties may be selectable by a user. Color mapping data may be characterized by color properties.

公开(公告)号：US11235532B2

公开(公告)日：2022-02-01

申请号：US16097667

申请日：2016-07-26

Applicant: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.

Inventor： Peter Morovic ,  Jan Morovic

IPC: B29C64/393 ,  B33Y50/02 ,  G06T5/00 ,  G06T17/10 ,  B33Y30/00 ,  H04N1/405 ,  G06T19/00 ,  G06K15/02 ,  G06T17/00 ,  B23K26/354 ,  G06F17/00

Abstract: In an example, processing apparatus includes a substructure module to define a substructure for a three dimensional object. The substructure module includes a weighting module to apply relative weights to data relating to each of the plurality of substructures and a blending module to blend data relating to the substructures. The substructure module is to generate data defining an intermediate substructure from a weighted blend of the data relating to the plurality of substructures.

公开(公告)号：US20210382666A1

公开(公告)日：2021-12-09

申请号：US16493068

申请日：2018-04-06

Applicant: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.

Inventor： Javier Maestro Garcia ,  Jan Morovic ,  Peter Morovic

IPC: G06F3/12 ,  H04N1/60 ,  G01J3/46

Abstract: Certain examples described herein relate to color spaces. In some cases, first and second sets of output color values representable in an output color space are obtained. The first and second sets of output color values correspond to first and second operating states of a printing system respectively. Each output color value in the first and second sets has corresponding coordinates in a colorimetry space. The first and second sets of output color values define respective first and second gamuts in the colorimetry space. First and second colorimetry values in an intersection of the first and second gamuts in the colorimetry space are selected, the selecting based on the respective colorimetry of the first and second colorimetry values and a predetermined transition region in an input color space. For an input color value located in the predetermined transition region of the input color space, a corresponding target colorimetry value located between the first and second colorimetry values in the colorimetry space is obtained. First and second output color values are derived based on the target colorimetry value and the first and second sets of output color values, respectively. First and second mappings between the input color space and the output color space are generated by respectively assigning the first and second output color values to the input color value.

公开(公告)号：US11134174B2

公开(公告)日：2021-09-28

申请号：US16475650

申请日：2017-04-24

Applicant: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.

Inventor： Xavier Farina Vargas ,  Peter Morovic ,  Jan Morovic

IPC: H04N1/54 ,  G06K15/02 ,  H04N1/60

Abstract: Example methods and systems are described in which a color space vector is transformed into a Neugebauer primary area coverage (NPac) vector, to be used for printing. In some examples, the color space vector is transformed into a NPac vector on the basis of criteria associated to amounts or probabilities of Neugebauer primaries (NPs).

公开(公告)号：US11057545B2

公开(公告)日：2021-07-06

申请号：US16978328

申请日：2018-04-30

Applicant: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.

Inventor： Peter Morovic ,  Jan Morovic ,  Victor Diego Gutierrez ,  Alex Campa Coloma ,  Javier Maestro Garcia

IPC: H04N1/60 ,  H04N1/64

Abstract: In an example a method includes deriving a print agent coverage vector specifying an area coverage for each of a plurality of elements, wherein each element is associated with a print agent, a print agent combination or an absence of print agent. Deriving the print agent coverage vector comprises, for a first element of the print agent coverage vector, applying a first weighting function which varies based on an intended area color value.

公开(公告)号：US11057543B2

公开(公告)日：2021-07-06

申请号：US16977662

申请日：2018-03-12

Applicant: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.

Inventor： Peter Morovic ,  Jan Morovic ,  Victor Diego Gutierrez ,  Javier Maestro Garcia

IPC: H04N1/60 ,  G06K15/02

Abstract: Certain examples described herein relate to updating a lookup table for an imaging system. An initial lookup table for an imaging system is obtained, the initial lookup table mapping between a first color space and a second color space. A smoothed version of the initial lookup table is also obtained. Further obtained are color property values corresponding to nodes of the lookup tables that map from a vertex-to-vertex axis of the first color space. The color property values are derived from measurements of test areas rendered by the imaging system. For a target node of the smoothed version of the initial lookup table that maps from the vertex-to-vertex axis, a pair of nodes in the initial lookup table are selected based on the obtained color property values. A mapped value in the second color space for the target node is updated, based on an interpolation of mapped values for the pair of nodes in the initial lookup table. The mapped value for the target node is constrained based on a color property value for the target node.

公开(公告)号：US11057542B2

公开(公告)日：2021-07-06

申请号：US16478095

申请日：2017-04-26

Applicant: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.

Inventor： Hector Gomez Minano ,  Peter Morovic ,  Jan Morovic

IPC: H04N1/60 ,  B41J2/12 ,  B41J2/525 ,  G01J3/46

Abstract: Certain examples described herein relate to color calibration. In certain cases, a plurality of test patches are printed with a printing system, the test patches corresponding to a set of initial color sample points and a set of test colors. Color properties of the printed test patches are measured. In certain examples, a gamut descriptor is identified from a plurality of gamut descriptors using the color properties of the test colors. Each gamut descriptor defines a set of up-sampling parameters for a particular color gamut. Measured color properties for the initial color sample points are up-sampled using the set of up-sampling parameters for the identified gamut descriptor to generate up-sampled data. In certain cases, the up-sampled data is used to generate a color mapping to be applied to print job data received by the printing system.

公开(公告)号：US11025798B2

公开(公告)日：2021-06-01

申请号：US16473752

申请日：2017-04-19

Applicant: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.

Inventor： Peter Morovic ,  Jan Morovic ,  Javier Maestro Garcia ,  Montserrat Solano Pallarol

IPC: H04N1/60

Abstract: A computing device receives first data indicating a first metric of a first printed test area and second data indicating a second metric of a second printed test area. The first printed test area is associated with a first plurality of Neugebauer Primaries and each Neugebauer Primary in the first plurality of Neugebauer Primaries is associated with a respective area coverage in the first printed test area. The second printed test area is associated with a second plurality of Neugebauer Primaries, wherein each Neugebauer Primary in the second plurality of Neugebauer Primaries is associated with a respective area coverage in the second printed test area and the second plurality of Neugebauer Primaries is different from the first plurality of Neugebauer Primaries. The computing device generates third data associating a color in a color space with the first plurality of Neugebauer Primaries or the second plurality of Neugebauer Primaries in dependence on the first metric and the second metric.