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10 条记录 (耗时 0.012 秒)

    Halftone screens
    1.
    发明授权
    Halftone screens 有权

    公开(公告)号：US10560604B2

    公开(公告)日：2020-02-11

    申请号：US15760299

    申请日：2015-09-29

    申请人： HP INDIGO B.V.

    发明人： Tal Frank ,  Oren Haik ,  Dror Kella ,  Ram Dagan ,  Marina Limonov

    IPC分类号： H04N1/52 ,  H04N1/405 ,  B41F15/10

    摘要： An example system includes a color engine to separate an image into a plurality of color components. The system also includes a halftone engine to generate a plurality of halftone images based on the plurality of color components and a plurality of halftone screens. For each halftone screen, the halftone cell centers for that halftone screen occur at regular or semi-regular distances relative to a dot pitch. The plurality of halftone screens forms a high frequency moire pattern when the halftone screens are overlaid on each other. Each of the halftone screens have a granularity metric less than a threshold.

    Dynamic dot gain lookup table generation
    5.
    发明授权
    Dynamic dot gain lookup table generation 有权

    公开(公告)号：US10582086B2

    公开(公告)日：2020-03-03

    申请号：US16073000

    申请日：2016-04-21

    申请人： HP INDIGO B.V.

    发明人： Ran Waidman ,  Tal Frank ,  Nir Guttman

    IPC分类号： H04N1/401 ,  H04N1/405 ,  H04N1/52 ,  H04N1/54 ,  H04N1/58 ,  H04N1/407

    摘要： Measures for use in calibrating a printing device. Historical dot gain linearization lookup table data for the printing device is processed. On the basis of the processed historical dot gain linearization lookup table data, a plurality of input points for a current dot gain linearization lookup table are dynamically determined. The printing device is calibrated according to the dynamically determined current dot gain linearization lookup table.

    GRAY COMPONENT REPLACEMENT IN A DIGITAL IMAGE TO GENERATE A COLOR TRANSFORMED IMAGE
    6.
    发明申请
    GRAY COMPONENT REPLACEMENT IN A DIGITAL IMAGE TO GENERATE A COLOR TRANSFORMED IMAGE 审中-公开

    公开(公告)号：US20190320093A1

    公开(公告)日：2019-10-17

    申请号：US16453327

    申请日：2019-06-26

    申请人： HP INDIGO B.V.

    发明人： Noam Shaham ,  Liron Itan ,  Mirta Perlman ,  Oren Haik ,  Oded Perry ,  Tal Frank ,  Ram Dagan ,  Gregory Braverman

    IPC分类号： H04N1/60 ,  G06K15/02

    摘要： Examples analyze a digital image to determine an amount of high-frequencies corresponding to each pixel of the digital image based at least in part on gradients corresponding to a pixel neighborhood of each pixel. Examples analyze the digital image to determine a degree of randomness for each pixel based at least in part on the corresponding gradients. Examples generate an activity mask for the digital image based at least in part on the amount of high-frequencies and the degree of randomness corresponding to each pixel. Examples process the pixels of the digital image by performing gray component replacement to generate a color transformed image based at least in part on the activity mask.

    Generating halftones
    7.
    发明授权
    Generating halftones 有权

    公开(公告)号：US10306108B2

    公开(公告)日：2019-05-28

    申请号：US16039694

    申请日：2018-07-19

    申请人： HP INDIGO B.V.

    发明人： Tal Frank ,  Dror Kella ,  Boaz Tagansky ,  Oren Haik ,  Yotam Ben-Shoshan ,  Marina Limonov ,  Ram Dagan

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

    摘要： A halftone comprises a first halftone screen and a second halftone screen. The first halftone screen comprises a first plurality of amplitude modulated dots arranged according to a first plurality of rows, the first plurality of rows being orientated according to a first direction and comprising a first dot spacing. The second halftone screen comprises a second plurality of amplitude modulated dots arranged according to a second plurality of rows, the second plurality of row being orientated in a second direction and comprising a second dot spacing. The first direction and the second direction define an angle of 45 degrees or less and a ratio of the second dot spacing to the first dot spacing is less than one.

    GENERATING HALFTONES
    10.
    发明申请
    GENERATING HALFTONES 审中-公开

    公开(公告)号：US20180324322A1

    公开(公告)日：2018-11-08

    申请号：US16039694

    申请日：2018-07-19

    申请人： HP INDIGO B.V.

    发明人： Tal Frank ,  Dror Kella ,  Boaz Tagansky ,  Oren Haik ,  Yotam Ben-Shoshan ,  Marina Limonov ,  Ram Dagan

    IPC分类号： H04N1/405 ,  H04N1/60

    CPC分类号： H04N1/4057 ,  H04N1/52 ,  H04N1/6008 ,  H04N1/6058

    摘要： A halftone comprises a first halftone screen and a second halftone screen. The first halftone screen comprises a first plurality of amplitude modulated dots arranged according to a first plurality of rows, the first plurality of rows being orientated according to a first direction and comprising a first dot spacing. The second halftone screen comprises a second plurality of amplitude modulated dots arranged according to a second plurality of rows, the second plurality of row being orientated in a second direction and comprising a second dot spacing. The first direction and the second direction define an angle of 45 degrees or less and a ratio of the second dot spacing to the first dot spacing is less than one.