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    • 10. 发明申请
    • HALFTONE SCREENS
    • 黑板屏幕
    • WO2017054852A1
    • 2017-04-06
    • PCT/EP2015/072484
    • 2015-09-29
    • HEWLETT-PACKARD INDIGO B.V.
    • FRANK, TalHAIK, OrenKELLA, DrorDAGAN, RamLIMONOV, Marina
    • H04N1/52
    • H04N1/52
    • 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.
    • 示例性系统包括将图像分离成多个颜色分量的颜色引擎。 该系统还包括半色调引擎,用于基于多个颜色分量和多个半色调屏幕产生多个半色调图像。 对于每个半色调屏幕,半色调网孔的中心点相对于点间距以规则或半规则的距离发生。 当半色调网屏幕彼此重叠时,多个半色调网格形成高频莫尔图案。 每个半色调屏幕具有小于阈值的粒度度量。