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    Creating a color gamut look-up-table
    112.
    发明授权
    Creating a color gamut look-up-table 有权
    创建色域查找表

    公开(公告)号：US09501727B2

    公开(公告)日：2016-11-22

    申请号：US14780736

    申请日：2013-10-30

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

    Inventor： Peter Morovic ,  Jordi Arnabat Benedicto ,  Jan Morovic ,  Jordi Vilar Benito

    IPC: H04N1/60 ,  H04N1/407 ,  G06K15/02 ,  G06T5/00 ,  H04N1/00

    CPC classification number: H04N1/6019 ,  G06K15/027 ,  G06K15/1878 ,  G06T5/00 ,  G06T2207/10024 ,  G06T2207/30176 ,  H04N1/00954 ,  H04N1/4072 ,  H04N1/6008 ,  H04N1/6025 ,  H04N1/605 ,  H04N1/6058 ,  H04N2201/0082

    Abstract: A color look-up-table (LUT) is created for use by an imaging system which uses a resource to display an image and/or provides an attribute of the image. A method of creating the LUT, comprises selecting (S1) a threshold value of resource usage and/or metric of the attribute. A predetermined color look-up-table representing a mapping from color values of a first color gamut to color values displayable by the imaging system is accessed. The predetermined color look-up-table has nodes defining colors to be displayed for the said color values. Resource usage and/or attribute values associated with the said nodes are compared with the threshold value thereby determining the set of nodes of the predetermined gamut having a resource usage and/or attribute values less than the threshold value (S2a, S2b, S3, S4). A new look-up-table is created (S5) which maps the said predetermined color gamut look-up-table to the said set of nodes.

    Abstract translation: 创建颜色查找表（LUT）以供成像系统使用，该成像系统使用资源来显示图像和/或提供图像的属性。 一种创建LUT的方法，包括选择（S1）资源使用的阈值和/或属性的度量。 表示从第一色域的颜色值到由成像系统可显示的颜色值的映射的预定颜色查找表。 预定颜色查找表具有定义要针对所述颜色值显示的颜色的节点。 将与所述节点相关联的资源使用和/或属性值与阈值进行比较，由此确定具有小于阈值的资源使用和/或属性值的预定色域的节点集合（S2a，S2b，S3，S4 ）。 创建新的查找表（S5），其将所述预定色域查找表映射到所述节点集合。

    Spectral print control based on specific spectral ranges of colorants
    113.
    发明授权
    Spectral print control based on specific spectral ranges of colorants 有权
    基于着色剂的特定光谱范围的光谱打印控制

    公开(公告)号：US09256815B1

    公开(公告)日：2016-02-09

    申请号：US14447201

    申请日：2014-07-30

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

    Inventor： Peter Morovic ,  Jan Morovic ,  Peter J. Klammer ,  James William Stasiak

    IPC: G06K15/00 ,  G06K15/02

    CPC classification number: G06K15/1878 ,  G06K15/027 ,  G06K15/1881 ,  G06K2215/0094 ,  H04N1/6033

    Abstract: Certain methods and systems are described that allow the spectral control of a print output. A plurality of colorants are used where one or more colorants contain nanoparticles. Each colorants has a specified spectral range corresponding to the constituent nanoparticles. To print with these colorants a spectral separation may be used that maps an input color with associated spectral information or direct spectral information to print control data, the print control data having defined values for depositions with each combination of the colorants. The spectral separation may be constructed by characterizing a set of spectral Neugebauer primaries for the plurality of colorants.

    Abstract translation: 描述允许对打印输出进行光谱控制的某些方法和系统。 使用多种着色剂，其中一种或多种着色剂含有纳米颗粒。 每种着色剂具有对应于组成纳米颗粒的特定光谱范围。 为了使用这些着色剂进行印刷，可以使用光谱分离，其将输入颜色与相关的光谱信息或直接光谱信息进行映射以打印控制数据，打印控制数据具有与着色剂的每种组合的沉积的定义值。 可以通过表征用于多种着色剂的一组光谱Neugebauer原色来构建光谱分离。

    ENCODING DATA IN AN IMAGE
    114.
    发明申请
    ENCODING DATA IN AN IMAGE 有权
    在图像中编码数据

    公开(公告)号：US20160037017A1

    公开(公告)日：2016-02-04

    申请号：US14446801

    申请日：2014-07-30

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

    Inventor： Peter Morovic ,  Jan Morovic ,  Peter J. Klammer ,  James William Stasiak

    IPC: H04N1/32 ,  H04N1/56 ,  G06T1/00 ,  G06T5/00

    CPC classification number: H04N1/32309 ,  G06T1/0028 ,  H04N1/32224 ,  H04N1/56 ,  H04N1/644

    Abstract: Certain methods and systems are described for encoding data in an image. According to an example, a set of metamers under a first set of conditions may be determined that vary under a second set of conditions. These may be used to generate a set of color mappings for a sampled color value, each color mapping being used for a different data value in the data. As such the data values may be detectable when the image is observed under the second set of conditions but not detectable when the image is observed under the first set of conditions.

    Abstract translation: 描述用于对图像中的数据进行编码的某些方法和系统。 根据示例，可以确定在第一组条件下的一组元标应在第二组条件下变化。 这些可以用于为采样的颜色值生成一组颜色映射，每个颜色映射用于数据中的不同数据值。 因此，当在第二组条件下观察图像时可以检测数据值，但是在第一组条件下观察图像时不可检测到数据值。

    PRINT MATERIAL ELEMENT SETS
    117.
    发明申请
    PRINT MATERIAL ELEMENT SETS 有权

    公开(公告)号：US20220360686A1

    公开(公告)日：2022-11-10

    申请号：US17634190

    申请日：2019-09-03

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

    Inventor： Sergio Etchebehere Juan ,  Peter Morovic ,  Jan Morovic

    IPC: H04N1/52 ,  H04N1/50 ,  H04N1/23

    Abstract: In an example, a method includes determining, by processing circuitry, an element set to be associated with a print addressable location for printing an article in a one-pass print mode. The element set may comprise a plurality of elements, wherein each element identifies a print material or print material combination and is associated with a probability that the print material or print material combination identified by that element is to be applied to the associated print addressable location. Determining the element set for printing in a one-pass print mode may comprise favouring elements identifying individual print materials over elements identifying print material combinations.

    Color calibration in a printing system
    118.
    发明授权
    Color calibration in a printing system 有权

    公开(公告)号：US11477346B2

    公开(公告)日：2022-10-18

    申请号：US17311174

    申请日：2019-01-10

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

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

    IPC: H04N1/60 ,  H04N1/407 ,  G06K15/02

    Abstract: Certain examples described herein relate to adjusting a printing system. In certain cases, a lookup table, LUT, is obtained where the lookup table comprises a plurality of nodes that map a plurality of input first color space values to a plurality of Neugebauer Primary area coverage, NPac, vectors in a second color space and each NPac vector comprises at least one Neugebauer Primary, NP. Each NPac vector in the LUT is adjusted by the determination of a colorimetric value of the NPac vector and the modification of the NPac vector based on a characteristic of the corresponding at least one NP and the colorimetric value such that the modification is specific to the NPac vector. The lookup table is updated with the modified NPac vector and stored for referral by the printing system in any future printing.

    Redundancy print modes
    119.
    发明授权
    Redundancy print modes 有权

    公开(公告)号：US11472195B2

    公开(公告)日：2022-10-18

    申请号：US16977550

    申请日：2018-03-14

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

    Inventor： Montserrat Solano Pallarol ,  Peter Morovic ,  Jan Morovic

    IPC: B41J2/205 ,  B41J29/393 ,  B41J29/38 ,  B41J2/175 ,  B41J2/21

    Abstract: In an example, a print system includes a redundancy engine, a separation engine, and a print engine. In that example, the redundancy engine may identify a group of nozzles based on a redundancy characteristic of a plurality of print head nozzles of a print head to be received at the print head station and the separation engine may select a color separation operation corresponding to a drop domain associated with the group of nozzles identified by the redundancy engine to operate the print head with redundancy. In that example, the print engine may generate instructions using the selected color separation operation to cause the print head to eject print fluid from a combination of nozzles corresponding to the group of nozzles based on the drop domain to operate the print head with a redundancy print mode.

    PRINT AGENT COVERAGE VECTORS
    120.
    发明申请
    PRINT AGENT COVERAGE VECTORS 有权

    公开(公告)号：US20220292319A1

    公开(公告)日：2022-09-15

    申请号：US17634651

    申请日：2019-09-23

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

    Inventor： Sergio Etchebehere Juan ,  Peter Morovic ,  Jan Morovic

    IPC: G06K15/02

    Abstract: In an example, a method includes determining, using processing circuitry, a first and second set of print agent coverage vectors characterising a white to black neutral axis in a color space. The first set of print agent coverage vectors may comprise non-black colorant elements and no black colorant elements, and the second set of print agent coverage vectors may comprise black colorant elements and no non-black colorant elements. Print agent coverage vectors characterising a skeleton of a color gamut using the non-black colorants and no black colorants and including the first set of print agent coverage vectors may also be determined, and a third set of print agent coverage vectors may be determined from the print agent coverage vectors characterising the skeleton using interpolation. A fourth set of print agent coverage vectors may be determined from the third set of print agent coverage vectors by, for each of a plurality of vectors of the third set, determining an amount of each non-black colorant specified in the vector of the third set of print agent coverage vectors, determining an amount of black colorant from one of the vectors from the second set of print agent coverage vectors; and determining a vector of the fourth set of print agent coverage vectors based on the amounts of non-black and black colorants.

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