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    LOOKUP TABLE SMOOTHING
    1.
    发明申请
    LOOKUP TABLE SMOOTHING 审中-公开

    公开(公告)号：US20200228680A1

    公开(公告)日：2020-07-16

    申请号：US16641595

    申请日：2017-09-25

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

    Inventor： Jan MOROVIC ,  Peter MOROVIC

    IPC: H04N1/60

    Abstract: Certain examples described herein relate to smoothing a lookup table for an imaging system. The lookup table comprises entries to map elements in a first color space to corresponding elements in a second color space. In certain cases, the entries of the lookup table are classified into a plurality of classes, each of the plurality of classes being based on a color space characteristic in the first color space or the second color space. Each of the plurality of classes of entries is sequentially smoothed.

    CONTROLLING PRINTING OF A HALFTONE
    2.
    发明申请
    CONTROLLING PRINTING OF A HALFTONE 审中-公开

    公开(公告)号：US20200034675A1

    公开(公告)日：2020-01-30

    申请号：US16336958

    申请日：2016-09-30

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

    Inventor： Peter MOROVIC ,  Jan MOROVIC ,  Xavier FARINA VARGAS

    IPC: G06K15/02

    Abstract: Example methods of controlling printing of a halftone image are disclosed as well as apparatuses and computer-readable storage mediums relating thereto. In an example, the method includes receiving input data indicating a first colorant deposition order for a colorant combination and a second colorant deposition order for the colorant combination, wherein the second colorant deposition order is different from the first colorant deposition order. Control data is generated based on the input data. The control data includes first pixel data associating a first pixel in the halftone image with the first colorant deposition order, and second pixel data associating a second pixel in the halftone image with the second colorant deposition order. The control data is used to control a printer to print the halftone.The above amendments are reflected in the attached substitute specification shown in clean and marked-up form in the Appendix submitted herewith.

    COLORANT CALIBRATION UTILIZING CALIBRATION ELEMENT
    3.
    发明申请
    COLORANT CALIBRATION UTILIZING CALIBRATION ELEMENT 审中-公开

    公开(公告)号：US20190037109A1

    公开(公告)日：2019-01-31

    申请号：US16073393

    申请日：2016-04-21

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

    Inventor： Peter MOROVIC ,  Jan MOROVIC

    IPC: H04N1/60 ,  H04N1/00

    CPC classification number: H04N1/60 ,  H04N1/00023 ,  H04N1/00034 ,  H04N1/00068 ,  H04N1/00087 ,  H04N1/50 ,  H04N1/54 ,  H04N1/603 ,  H04N1/605

    Abstract: A system includes a memory to store at least one Halftone Area Neugebauer Separation (HANS) look-up table (LUT) that represents a predetermined drop weight for N colorant channels of a printer. The HANS LUT provides a given Neugebauer Primary area coverage in response to a device color input value. Measurement data stored in the memory represents measured drop weight values for the N colorant channels of the printer. A processor executes instructions stored in the memory. The instructions are to compute a calibration element for the HANS LUT that describes a drop-weight deviation with respect to the HANS LUT based on the measured drop weight values. The instructions are to apply the calibration element to at least a portion of the HANS LUT to generate a calibrated LUT.

    METHODS FOR PRINTING WITH A PRINTHEAD
    8.
    发明申请
    METHODS FOR PRINTING WITH A PRINTHEAD 有权
    用PRINTHEAD打印的方法

    公开(公告)号：US20150298474A1

    公开(公告)日：2015-10-22

    申请号：US14646307

    申请日：2012-11-29

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

    Inventor： Marti RIUS ROSSELL ,  Peter MOROVIC ,  Jan MOROVIC

    IPC: B41J29/38

    CPC classification number: B41J29/38 ,  B41J2/16526 ,  H04N1/60

    Abstract: A method for printing, comprising: obtaining an imaging matrix, in which each row or each column of cells is associated with at least a nozzle of a printhead, and in which each cell contains an initial value of a parameter which is related to an amount of ink to be deposited on the print medium; dividing the imaging matrix into at least two subsets of cells, such that each cell of the matrix belongs to one of said subsets; associating with each subset of cells a conversion function; obtaining a converted imaging matrix by applying to the initial value in each cell the function that corresponds to the subset to which the cell belongs; and printing using said converted imaging matrix.

    Abstract translation: 一种用于打印的方法，包括：获得成像矩阵，其中每行或每列单元格与至少一个打印头的喷嘴相关联，并且其中每个单元格包含与数量相关的参数的初始值 要沉积在打印介质上的油墨; 将所述成像矩阵划分为至少两个小区子集，使得所述矩阵的每个小区属于所述子集之一; 将每个细胞子集与转换函数相关联; 通过对每个单元中的初始值应用与该单元所属的子集相对应的函数来获得转换的成像矩阵; 以及使用所述转换的成像矩阵进行打印。

    COLOR PREDICTION IN MULTIPLE CONTEXTS
    9.
    发明公开
    COLOR PREDICTION IN MULTIPLE CONTEXTS 审中-公开

    公开(公告)号：US20230396728A1

    公开(公告)日：2023-12-07

    申请号：US18249081

    申请日：2020-10-16

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

    Inventor： Jan MOROVIC ,  Peter MOROVIC

    IPC: H04N1/60

    CPC classification number: H04N1/6033

    Abstract: Certain examples relate to a method of a method of color prediction in multiple rendering contexts. In one example the method determines a plurality of color prediction models for respective color rendering contexts, each color prediction model mapping between a device dependent color and a rendered color. Measurement data of the rendered color in one said context obtained and mapped to a corrected device color. The corrected device color may be used to predict rendered corrected color for another said context using respective color prediction models.

    GRAIN PREDICTIONS
    10.
    发明申请
    GRAIN PREDICTIONS 有权

    公开(公告)号：US20220321735A1

    公开(公告)日：2022-10-06

    申请号：US17640235

    申请日：2019-09-05

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

    Inventor： Peter MOROVIC ,  Jan MOROVIC ,  Sergio ETCHEBEHERE JUAN

    IPC: H04N1/405 ,  H04N1/60 ,  H04N1/52

    Abstract: In an example, a method includes accessing an initial prediction of a granularity metric for a halftone pattern. A correction factor to apply to the initial prediction may be determined, the correction factor being determined from a correction factor model defining a relationship between initial predictions of granularity metrics and human perceptions of granularity. The method may further include generating, using processing circuitry, a revised prediction of the granularity metric for the halftone pattern using the correction factor.

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