Hybrid halftone generation mechanism using change in pixel error
    2.
    发明授权
    Hybrid halftone generation mechanism using change in pixel error 有权
    混合半色调产生机制使用像素误差的变化

    公开(公告)号:US08922834B2

    公开(公告)日:2014-12-30

    申请号:US13440820

    申请日:2012-04-05

    CPC分类号: H04N1/4053

    摘要: A method is disclosed. The method includes generating a Continuous Tone Image (CTI) with all pixel values same as a first gray level, generating an initial Half Tone Image (HTI) with all pixel values equal to minimum absorptance level and computing a change in pixel error for a first pixel. The change in pixel error is computed by identifying a first pixel indicated in a valid pixel map, toggling the first pixel with all the possible output states and swapping the first pixel with all neighbor pixels only if the stacking constraint is satisfied, updating the HTI with the maximum error decrease operation and continue to next pixel location till the end criteria is met.

    摘要翻译: 公开了一种方法。 该方法包括产生具有与第一灰度级相同的所有像素值的连续色调图像(CTI),产生具有等于最小吸收水平的所有像素值的初始半色调图像(HTI),并计算第一像素值的像素误差的变化 像素。 通过识别有效像素图中指示的第一像素来计算像素误差的变化,如果满足堆叠约束,则仅切换具有所有可能输出状态的第一像素并且将第一像素与所有相邻像素交换,用H 最大误差减小操作,并继续到下一个像素位置,直到满足结束标准。

    Halftone mechanism
    3.
    发明授权
    Halftone mechanism 有权
    半色调机制

    公开(公告)号:US09363414B2

    公开(公告)日:2016-06-07

    申请号:US14527057

    申请日:2014-10-29

    IPC分类号: H04N1/40 G06K15/02 H04N1/405

    摘要: A method is disclosed. The method includes applying a human visual system (HVS) model to a Continuous Tone Image (CTI) and a initial Half Tone Image (HTI) to generate a perceived CTI and a perceived HTI and computing a change in pixel error for a first pixel by toggling the first pixel with all the possible output states and swapping the first pixel with all neighbor pixels.

    摘要翻译: 公开了一种方法。 该方法包括将人类视觉系统(HVS)模型应用于连续色调图像(CTI)和初始半色调图像(HTI)以产生感知的CTI和感知的HTI,并且通过以下方式计算第一像素的像素误差的变化: 用所有可能的输出状态切换第一个像素,并将第一个像素与所有相邻像素进行交换。

    Mask generation mechanism
    7.
    发明授权
    Mask generation mechanism 有权
    面具生成机制

    公开(公告)号:US08693054B2

    公开(公告)日:2014-04-08

    申请号:US13345456

    申请日:2012-01-06

    IPC分类号: H04N1/60

    CPC分类号: H04N1/4051

    摘要: A method is disclosed. The method includes generating a seed pattern which ensures one dot per column, computing an auto correlation function and performing pixel error processing. Pixel error processing includes performing multiple operations during each iteration to create visually pleasing halftone mask patterns which follow a one dot per column constraint.

    摘要翻译: 公开了一种方法。 该方法包括生成保证每列一个点的种子图案,计算自相关函数并执行像素误差处理。 像素误差处理包括在每次迭代期间执行多个操作以创建视觉上令人满意的半色调掩模图案,其遵循每列约束的一个点。

    Hybrid Halftone Generation Mechanism
    8.
    发明申请
    Hybrid Halftone Generation Mechanism 有权
    混合半色调生成机制

    公开(公告)号:US20130265612A1

    公开(公告)日:2013-10-10

    申请号:US13440830

    申请日:2012-04-05

    IPC分类号: H04N1/405

    摘要: A method is disclosed. The method includes generating a Continuous Tone Image (CTI) with all pixel values same as a first gray level, generating an initial Half Tone Image (HTI) with all pixel values equal to minimum absorptance level and computing a change in pixel error for a first pixel. The change in pixel error is computed by identifying a first pixel indicated in a valid pixel map, toggling the first pixel with all the possible output states and swapping the first pixel with all neighbor pixels only if the stacking constraint is satisfied, updating the HTI with the maximum error decrease operation and continue to next pixel location till the end criteria is met.

    摘要翻译: 公开了一种方法。 该方法包括产生具有与第一灰度级相同的所有像素值的连续色调图像(CTI),产生具有等于最小吸收水平的所有像素值的初始半色调图像(HTI),并计算第一像素值的像素误差的变化 像素。 通过识别有效像素图中指示的第一像素来计算像素误差的变化,如果满足堆叠约束,则仅切换具有所有可能输出状态的第一像素并且将第一像素与所有相邻像素交换,更新HTI与 最大误差减小操作,并继续到下一个像素位置,直到满足结束标准。