Method and system for enhancing a digital halftone representation for printing
    1.
    发明授权
    Method and system for enhancing a digital halftone representation for printing 有权
    用于增强打印数字半色调表示的方法和系统

    公开(公告)号:US08537423B2

    公开(公告)日:2013-09-17

    申请号:US13007013

    申请日:2011-01-14

    IPC分类号: H04N1/405

    CPC分类号: H04N1/405

    摘要: A method for predicting an appearance of a rendering by a printer of a digital halftone representation of a continuous-tone image includes calculating a predicted absorptance value of a dot of a rendered halftone of the digital halftone representation. The dot corresponds to a pixel of the digital halftone representation. The predicted absorptance value is based on a configuration of pixel values of pixels in an immediate neighborhood of the pixel, and on a weighted contribution of a pixel value of each pixel in an outer neighborhood of the pixel. The method may be incorporated into a halftoning technique. Relating computer program product and data processing system are also disclosed.

    摘要翻译: 用于预测连续色调图像的数字半色调表示的打印机呈现外观的方法包括计算数字半色调表示的再现半色调的点的预测吸收值。 点对应于数字半色调表示的像素。 预测的吸收率值基于像素的紧邻区域中的像素的像素值的配置以及像素的外部邻域中的每个像素的像素值的加权贡献。 该方法可以并入半色调技术中。 还公开了关于计算机程序产品和数据处理系统。

    METHOD AND SYSTEM FOR ENHANCING A DIGITAL HALFTONE REPRESENTATION FOR PRINTING
    2.
    发明申请
    METHOD AND SYSTEM FOR ENHANCING A DIGITAL HALFTONE REPRESENTATION FOR PRINTING 有权
    用于增强打印数字黑客代表的方法和系统

    公开(公告)号:US20120182587A1

    公开(公告)日:2012-07-19

    申请号:US13007013

    申请日:2011-01-14

    IPC分类号: H04N1/405

    CPC分类号: H04N1/405

    摘要: A method for predicting an appearance of a rendering by a printer of a digital halftone representation of a continuous-tone image includes calculating a predicted absorptance value of a dot of a rendered halftone of the digital halftone representation. The dot corresponds to a pixel of the digital halftone representation. The predicted absorptance value is based on a configuration of pixel values of pixels in an immediate neighborhood of the pixel, and on a weighted contribution of a pixel value of each pixel in an outer neighborhood of the pixel. The method may be incorporated into a halftoning technique. Relating computer program product and data processing system are also disclosed.

    摘要翻译: 用于预测连续色调图像的数字半色调表示的打印机呈现外观的方法包括计算数字半色调表示的再现半色调的点的预测吸收值。 点对应于数字半色调表示的像素。 预测的吸收率值基于像素的紧邻区域中的像素的像素值的配置以及像素的外部邻域中的每个像素的像素值的加权贡献。 该方法可以并入半色调技术中。 还公开了关于计算机程序产品和数据处理系统。

    Color screen sets
    3.
    发明授权
    Color screen sets 有权
    彩色屏幕集

    公开(公告)号:US08472081B2

    公开(公告)日:2013-06-25

    申请号:US13011311

    申请日:2011-01-21

    IPC分类号: H04N1/405 H04N1/60 H04N1/46

    CPC分类号: H04N1/4058 H04N1/52

    摘要: A method for designing a screen set for color halftoning includes selecting a screen set that includes at least two screens. The screens are applied to a uniform color image so as to form a set of corresponding colorant halftones. The colorant halftones are superposed to form a color halftone. A spatial frequency spectrum of the color halftone is calculated. Maxima of the spatial frequency spectrum that occur at two effective frequencies are identified, the two effective frequencies being located in two adjacent quadrants of a complex spatial frequency space. A magnitude of each effective frequency is compared with a predetermined frequency magnitude. The screen set is accepted for future application for color halftoning only if both effective frequency magnitudes are greater than the predetermined frequency magnitude. Relating computer program product and data processing system are also disclosed.

    摘要翻译: 一种用于设计用于彩色半色调的屏幕组的方法包括选择包括至少两个屏幕的屏幕组。 将屏幕应用于均匀的彩色图像,以便形成一组相应的着色剂半色调。 将着色剂半色调叠加以形成彩色半色调。 计算颜色半色调的空间频谱。 识别在两个有效频率处发生的空间频谱的最大值,两个有效频率位于复数空间频率空间的两个相邻象限中。 将每个有效频率的大小与预定频率幅度进行比较。 仅当有效频率大于预定频率幅度时,屏幕组才被接受用于彩色半色调的将来应用。 还公开了关于计算机程序产品和数据处理系统。

    COLOR SCREEN SETS
    4.
    发明申请
    COLOR SCREEN SETS 有权
    彩色屏幕

    公开(公告)号:US20120188611A1

    公开(公告)日:2012-07-26

    申请号:US13011311

    申请日:2011-01-21

    IPC分类号: H04N1/405

    CPC分类号: H04N1/4058 H04N1/52

    摘要: A method for designing a screen set for color halftoning includes selecting a screen set that includes at least two screens. The screens are applied to a uniform color image so as to form a set of corresponding colorant halftones. The colorant halftones are superposed to form a color halftone. A spatial frequency spectrum of the color halftone is calculated. Maxima of the spatial frequency spectrum that occur at two effective frequencies are identified, the two effective frequencies being located in two adjacent quadrants of a complex spatial frequency space. A magnitude of each effective frequency is compared with a predetermined frequency magnitude. The screen set is accepted for future application for color halftoning only if both effective frequency magnitudes are greater than the predetermined frequency magnitude. Relating computer program product and data processing system are also disclosed.

    摘要翻译: 一种用于设计用于彩色半色调的屏幕组的方法包括选择包括至少两个屏幕的屏幕组。 将屏幕应用于均匀的彩色图像,以便形成一组相应的着色剂半色调。 将着色剂半色调叠加以形成彩色半色调。 计算颜色半色调的空间频谱。 识别在两个有效频率处发生的空间频谱的最大值,两个有效频率位于复数空间频率空间的两个相邻象限中。 将每个有效频率的大小与预定频率幅度进行比较。 仅当有效频率大于预定频率幅度时,屏幕组才被接受用于彩色半色调的将来应用。 还公开了关于计算机程序产品和数据处理系统。

    Face and skin sensitive image enhancement
    9.
    发明授权
    Face and skin sensitive image enhancement 有权
    面部和皮肤敏感的图像增强

    公开(公告)号:US08031961B2

    公开(公告)日:2011-10-04

    申请号:US11754711

    申请日:2007-05-29

    IPC分类号: G06K9/40 G06K9/46

    摘要: Systems and methods of face and skin sensitive image enhancement are disclosed. In one aspect, a face map that includes for each pixel of an input image a respective face probability value indicating a degree to which the pixel corresponds to a human face is calculated. A skin map that includes for each pixel of the input image a respective skin probability value indicating a degree to which the pixel corresponds to human skin is ascertained. The input image is enhanced with an enhancement level that varies pixel-by-pixel in accordance with the respective face probability values and the respective skin probability values. In another aspect, a facial content measurement value indicating a degree to which an input image contains human face content is ascertained. A tone-correction process is tuned in accordance with the facial content measurement value. The input image is enhanced in accordance with the tuned tone-correction process.

    摘要翻译: 公开了面部和皮肤敏感图像增强的系统和方法。 在一个方面中,对于输入图像的每个像素包括指示像素对应于人脸的程度的各自的面部概率值的面部图被计算。 确定对于输入图像的每个像素包括指示像素对应于人体皮肤的程度的各个皮肤概率值的皮肤图。 增强输入图像,其中增强级别根据各自的面部概率值和各个皮肤概率值逐像素地变化。 在另一方面,确定表示输入图像包含人脸内容的程度的面部内容测量值。 根据面部内容测量值调整色调校正过程。 根据调谐色调校正过程增强输入图像。