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公开(公告)号：US20150062148A1
公开(公告)日：2015-03-05
申请号：US14016513
申请日：2013-09-03
Applicant: Hewlett-Packard Development Company, L.P.
Inventor： Jan Morovic , Peter Morovic
IPC: G09G5/06
CPC classification number: G09G5/06 , G09G5/02 , G09G2320/0285 , G09G2340/0428 , G09G2340/06
Abstract: A system in accordance with an example is to assign a display color to a pixel to be displayed, to achieve an apparent desired color at a local neighborhood node of pixels having an apparent color bit depth greater than an addressable color palette for the display color that the pixel is capable of producing. The display color is assigned to the pixel based on a convex combination of colors of the local neighborhood node of pixels, to provide the desired color for the node based on local optical averaging.
Abstract translation: 根据示例的系统是将显示颜色分配给要显示的像素，以在具有大于用于显示颜色的可寻址调色板的明显颜色位深度的像素的局部邻域节点处实现明显期望的颜色， 该像素能够产生。 基于像素的局部邻域节点的颜色的凸组合将显示颜色分配给像素，以基于局部光学平均为节点提供期望的颜色。
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公开(公告)号：US20240064261A1
公开(公告)日：2024-02-22
申请号：US17766383
申请日：2020-01-30
Applicant: Hewlett-Packard Development Company, L.P.
Inventor： Peter Morovic , Jan Morovic
CPC classification number: H04N1/6038 , G06T7/90 , H04N1/6097 , G06T2207/10024
Abstract: In an example, a method includes obtaining, by processing circuitry, a mapping from at least one measured color characteristic of a first substrate to at least one measured color characteristic of a second substrate, wherein the at least one measured color characteristic of the first substrate comprises a measured color characteristic of an unmarked portion of the first substrate and the at least one measured color characteristic of the second substrate comprises a measured color characteristic of an unmarked portion of the second substrate. In some examples the method further includes applying, by processing circuitry, the mapping to a first color which is obtained when applying at least one colorant according to a first colorant specification on the first substrate to determine a predicted color to be obtained by applying at least one colorant according to the first colorant specification on the second substrate.
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公开(公告)号：US20220345589A1
公开(公告)日：2022-10-27
申请号：US17753791
申请日：2019-09-20
Applicant: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.
Inventor： Peter Morovic , Jan Morovic
Abstract: Examples of a method and a system measure colorimetric data of a set of color samples deposited on a reference substrate and on at least one further substrate having distinct colors from one another. Based on the measured colorimetric data, estimate functions are applied for mapping between the colorimetric data of the color samples deposited on differently colored substrates.
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公开(公告)号：US11381707B2
公开(公告)日：2022-07-05
申请号：US17051775
申请日：2018-08-30
Applicant: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.
Inventor： Peter Morovic , Jan Morovic
IPC: H04N1/40 , H04N1/405 , H04N1/52 , H04N19/176
Abstract: There are disclosed techniques for error diffusion for printing.
For example, there is disclosed a device comprising a pixel selector, to select a pixel from an image to be printed, wherein the pixel is associated to a group of device state probabilities, wherein each device state probability describes a probability of choosing a particular device state, wherein each device state describes the quantity of each colorant to be used in correspondence of the pixel.
The device may comprise a device state determiner, to choose the device state for the selected pixel on the basis of the device state probabilities associated to the selected pixel. The device may comprise a feedback chain, to diffuse device state probability errors to pixels to be subsequently selected. The feedback chain may include a selected pixel error determiner, to determine device state probability errors for each device state probability of the selected pixel. The feedback chain may include a neighbouring pixel selector, to choose neighbouring pixels among the pixels to be subsequently selected. The feedback chain may include a neighbouring pixel error modifier, to modify, for each neighbouring pixel, the determined device state probability errors according to criteria conditioned by metrics and/or classification data associated to the selected pixel and/or a group of previously selected pixels and the relative position between the neighbouring pixel and the selected pixel. The feedback chain may include an error diffuser, to diffuse the modified device state probability errors to the neighbouring pixels.-
公开(公告)号：US20220109781A1
公开(公告)日：2022-04-07
申请号：US17419141
申请日：2019-06-13
Applicant: Hewlett-Packard Development Company, L.P.
Inventor： Jan Morovic , Jordi Arnabat Benedicto , Alessandro Beltrami , Gregory Braverman , Joseph Stellbrink , Peter Morovic , Dan Bavli
IPC: H04N1/60
Abstract: Certain examples relate to a method of color matching by confirming a color-rendering device. Color reproduction parameters are determined for a reference and target color-rendering device. A color matching parameter is determined for the target color-rendering device based on a comparison of the color reproduction parameter for the target color-rendering device with the corresponding color reproduction parameter of the reference color-rendering device. The color-rendering device is confirmed dependent on the color matching parameter. Color resources of the target color-rendering device are configured such that a rendering of a color image on the target color-rendering device replicates a rendering of the color image on the reference color-rendering device.
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Patent Agency Ranking
公开(公告)号：US20220094809A1
公开(公告)日：2022-03-24
申请号：US17418982
申请日：2019-06-13
Applicant: Hewlett-Packard Development Company, L.P.
Inventor： Peter Morovic , Jan Morovic , Xavier Farina Vargas , Jordi Arnabat Benedicto , Alessandro Beltrami
Abstract: Certain examples relate to a method of printing management. An image is received for printing and printing parameters to print the image are determined. The image is printed onto a substrate using the printing parameters, and the image is printed with an embedded code corresponding to the printing parameters. The printing parameters are associated with the embedded code such that the printing parameters are retrievable from the embedded code.
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公开(公告)号：US11134176B2
公开(公告)日：2021-09-28
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.
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公开(公告)号：US11126900B2
公开(公告)日：2021-09-21
申请号：US16975616
申请日：2018-03-08
Applicant: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.
Inventor： Jan Morovic , Peter Morovic
Abstract: Certain examples relate to the processing of spot colors within a printing pipeline. In these example, a palette of spot colors indicated in a print job is determined. The palette is mapped to a set of vectors in a colorant-dependent color space based on a comparison of target spectral characteristics for the spot colors and measured spectral characteristics of the printing system. The set of vectors is used to assign vectors to print-resolution areas of the print job before halftoning.
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公开(公告)号：US20210176378A1
公开(公告)日：2021-06-10
申请号：US16763763
申请日：2017-12-14
Applicant: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.
Inventor： Peter Morovic , Jan Morovic , Victor Diego Gutierrez
Abstract: Certain examples described herein relate to generating a Neugebauer Primary area coverage (NPac) vector. In certain cases, an operating state of a printing system is determined. A first NPac vector is obtained, having an initial set of Neugebauer Primaries (NPs). The initial set of NPs comprise a NP that is not implementable with the operating state. A target set of NPs is determined on the basis of the operating state, the target set of NPs being implementable with the operating state. A second NPac vector is generated, the second NPac vector having the target set of NPs.
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公开(公告)号：US20210136256A1
公开(公告)日：2021-05-06
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.
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