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    Print calibration system and method
    171.
    发明授权
    Print calibration system and method 有权

    公开(公告)号：US11283965B2

    公开(公告)日：2022-03-22

    申请号：US17311041

    申请日：2018-12-14

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

    Inventor： Hector Gomez Minano ,  Peter Morovic ,  Jan Morovic ,  Sergio Etchebehere Juan

    IPC: H04N1/60

    Abstract: A print calibration system comprising a printing device to apply print material to a print target in a printing process, a memory for storing a lookup table; and a processor. The processor causes the printing device to print calibration points for reproducing a color ramp, by receiving a plurality of Neugebauer Primary area coverage (‘NPac’) points representing the plurality of calibration points and determining a hue angle and color space based on the NPac points. A plurality of nodes distributed between a first node and a second node of a sectional representation of the NPac points is determined. A lookup table is generated based on a relationship between the plurality of nodes and the NPac points for use during the printing process, wherein the lookup table comprises values to map between a first color space and a second color space, the lookup table is then provided to the printing device.

    MAPPING COLOR GAMUTS
    173.
    发明申请
    MAPPING COLOR GAMUTS 有权

    公开(公告)号：US20210344813A1

    公开(公告)日：2021-11-04

    申请号：US17282026

    申请日：2018-10-03

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

    Inventor： Juan Miguel Huertas Delgado ,  Jordi Vilar ,  Jordi Arnabat Benedicto ,  Jan Morovic

    IPC: H04N1/60

    Abstract: A method comprises obtaining at a processor a first color gamut and a second gamut represented in a first color space. The first and second gamuts are represented as first and second objects in a second color space, with each object comprising a plurality of nodes. For each node, an index is provided indicating a position in the first color space to which that node corresponds. A further index is provided indicating a position, in the first color space, of the node relative to at least one other node of the object to which the node belongs. Each node of the first object corresponds with a node of the second object providing a mapping between the objects, using the further index. The index of at least one of the first object nodes is adjusted based on the corresponding node of the second object producing a mapping between the gamuts.

    DETERMINING CUMULATIVE PROBABILITY VALUES FOR SUBSETS OF ELEMENTS
    174.
    发明申请
    DETERMINING CUMULATIVE PROBABILITY VALUES FOR SUBSETS OF ELEMENTS 有权

    公开(公告)号：US20210141574A1

    公开(公告)日：2021-05-13

    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 en 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.

    THREE-DIMENSIONAL OBJECT SUBSTRUCTURES
    179.
    发明申请
    THREE-DIMENSIONAL OBJECT SUBSTRUCTURES 审中-公开

    公开(公告)号：US20200331206A1

    公开(公告)日：2020-10-22

    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 ,  G06T17/10 ,  G06T5/00

    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.

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