公开(公告)号：US08576449B2

公开(公告)日：2013-11-05

申请号：US13096429

申请日：2011-04-28

申请人： Edgar A. Bernal ,  Shen-ge Wang ,  Robert P. Loce

发明人： Edgar A. Bernal ,  Shen-ge Wang ,  Robert P. Loce

IPC分类号： H04N1/405 ,  H04N1/46 ,  G06K15/00

CPC分类号： H04N1/4055

摘要： As set forth herein, computer-implemented methods and systems facilitate halftoning using a parametrically controlled spot function based on triangle tessellation, which in turn facilitates dot growth control of periodic halftone using an irregular seed structure. The spot function determines the shape of the halftone dot used to reproduce a given pixel. The spot function is well suited for growing halftone dots arrayed on a non-regular grid and can also be used for grids with regular order. The spot function includes adjustable parameters for controlling its sharpness and slope.

摘要翻译： 如本文所述，计算机实现的方法和系统使用基于三角形镶嵌的参数控制的点函数来促进半色调调整，这进一步促进了使用不规则种子结构的周期性半色调的点生长控制。 点功能决定用于再现给定像素的半色调点的形状。 斑点功能非常适合生长在非规则网格上的半色调点，并且也可以用于具有定期顺序的网格。 点功能包括用于控制其锐度和斜率的可调参数。

公开(公告)号：US20130163053A1

公开(公告)日：2013-06-27

申请号：US13334482

申请日：2011-12-22

申请人： Shen-ge Wang ,  Edgar A. Bernal ,  Robert P. Loce

发明人： Shen-ge Wang ,  Edgar A. Bernal ,  Robert P. Loce

IPC分类号： H04N1/405

CPC分类号： H04N1/4051 ,  H04N1/52

摘要： As set forth herein, computer-implemented methods and systems facilitate employing a single stochastic screen defined up to a specified transition level. The dots at the specified level are connected to form a triangle tessellation with an associated spot function. For up to three colorants, a vector screening technique is employed, which involves a first colorant dot being grown from the vertices, second colorant dot grown from the triangle center, and a third colorant dot grown from the side midpoints. Growth in this manner ensures separation of colorants up to a certain density level. In cases where fourth colorant is to be used at a given pixel, the fourth colorant can be added using methods typically used for clustered screens, such as stochastic screening of the lightest colorant, in order to mitigate color shift sensitivity issues.

摘要翻译： 如本文所述，计算机实现的方法和系统便于采用在特定过渡级别之下定义的单个随机屏幕。 指定级别的点被连接以形成具有相关联的点功能的三角形细分。 对于最多三种着色剂，使用载体筛选技术，其包括从顶点生长的第一着色剂点，从三角形中心生长的第二着色剂点和从侧面中点生长的第三着色剂点。 以这种方式生长确保着色剂的分离达到一定的密度水平。 在给定像素处使用第四着色剂的情况下，可以使用通常用于聚类屏幕的方法（例如最轻的着色剂的随机筛选）来添加第四着色剂，以减轻色移敏感性问题。

公开(公告)号：US08467592B2

公开(公告)日：2013-06-18

申请号：US12655216

申请日：2009-12-23

申请人： Shen-ge Wang ,  Beilei Xu ,  Robert P. Loce

发明人： Shen-ge Wang ,  Beilei Xu ,  Robert P. Loce

IPC分类号： G06K9/00

CPC分类号： G06T7/001 ,  G06T2207/10008 ,  G06T2207/30144

摘要： Embodiments described herein are directed to detecting and/or measuring distortions of substrate media that can occur during a printing process. The distortion can be detected and/or measured using a composite image generated from a reference image having a first periodic pattern and print image, disposed on a test substrate media, having a second periodic pattern. The first and second periodic patterns are specified so that the composite image includes a moiré pattern having moiré fringes resulting from interference between the first periodic pattern associated with the reference image and the second periodic pattern associated with the print image. The moiré fringes can be used to detect and calculate an amount of distortion of the test substrate media.

摘要翻译： 本文描述的实施例涉及检测和/或测量可能在印刷过程中发生的基底介质的变形。 可以使用从具有第二周期性图案的设置在测试基板介质上的具有第一周期图案和打印图像的参考图像生成的合成图像来检测和/或测量失真。 指定第一和第二周期性图案，使得合成图像包括具有由与参考图像相关联的第一周期性图案与与打印图像相关联的第二周期性图案之间的干涉而产生的莫尔条纹的莫尔图案。 莫尔条纹可用于检测和计算测试基板介质的变形量。

公开(公告)号：US08467103B2

公开(公告)日：2013-06-18

申请号：US12539848

申请日：2009-08-12

申请人： Shen-ge Wang ,  Robert P. Loce

发明人： Shen-ge Wang ,  Robert P. Loce

IPC分类号： H04N1/405 ,  G06T5/00

CPC分类号： H04N1/4051 ,  H04N1/4058

摘要： Disclosed are moiré-free color halftoning methods, apparatus and systems to digitally reproduce an original color image. The disclosed embodiments are particularly useful for rendering a color image with a color printing device. According to one exemplary embodiment, an image forming method utilizes three or four rotated hexagonal screens which can include regular shaped hexagon screens or convex tessellated hexagon screens.

摘要翻译： 公开的是无摩尔色彩色调方法，用于数字再现原始彩色图像的装置和系统。 所公开的实施例对于用彩色打印设备渲染彩色图像特别有用。 根据一个示例性实施例，图像形成方法利用三个或四个旋转的六边形屏幕，其可以包括规则形状的六边形屏幕或凸镶嵌的六边形屏幕。

公开(公告)号：US20120133990A1

公开(公告)日：2012-05-31

申请号：US12956469

申请日：2010-11-30

申请人： Shen-ge Wang ,  Robert P. Loce

发明人： Shen-ge Wang ,  Robert P. Loce

IPC分类号： G06K15/02

CPC分类号： H04N1/52

摘要： Provided is a 3-colorant DOD (dot-off-dot) periodic halftone geometry used to render an image. The DOD 3-colorant halftone geometry includes a base colorant halftone screen with hexagonally tiled halftone dots arranged in a hexagonal pattern, the hexagonally tiled halftone dots having a first fundamental frequency vector Vh1, a second fundamental frequency vector Vh2, and a third fundamental frequency vector Vh3, where Vh3 is substantially equivalent to Vh1+Vh2.

摘要翻译： 提供了用于渲染图像的3-着色剂DOD（点 - 点）周期性半色调几何。 DOD 3着色剂半色调几何形状包括具有以六边形图案排列的六角形平铺半色调点的基础着色剂半色调筛网，六边形平铺半色调点具有第一基频矢量Vh1，第二基本频率矢量Vh2和第三基频矢量 Vh3，其中Vh3基本上等于Vh1 + Vh2。

公开(公告)号：US20110038008A1

公开(公告)日：2011-02-17

申请号：US12539925

申请日：2009-08-12

申请人： Shen-ge Wang ,  Robert P. Loce

发明人： Shen-ge Wang ,  Robert P. Loce

IPC分类号： H04N1/405

CPC分类号： H04N1/4051 ,  H04N1/4058

摘要： Disclosed are moiré-free color halftoning methods, apparatus and systems to digitally reproduce an original color image. The disclosed embodiments are particularly useful for rendering a color image with a color printing device. According to one exemplary embodiment, an image forming method utilizes three or four rotated hexagonal screens which can include regular shaped hexagon screens or convex tessellated hexagon screens.

摘要翻译： 公开的是无摩尔色彩色调方法，用于数字再现原始彩色图像的装置和系统。 所公开的实施例对于用彩色打印设备渲染彩色图像特别有用。 根据一个示例性实施例，图像形成方法利用三个或四个旋转的六边形屏幕，其可以包括规则形状的六边形屏幕或凸镶嵌的六边形屏幕。

公开(公告)号：US08351085B2

公开(公告)日：2013-01-08

申请号：US12539925

申请日：2009-08-12

申请人： Shen-ge Wang ,  Robert P. Loce

发明人： Shen-ge Wang ,  Robert P. Loce

IPC分类号： G06K15/00 ,  H04N1/405 ,  H04N1/46

CPC分类号： H04N1/4051 ,  H04N1/4058

摘要： Disclosed are moiré-free color halftoning methods, apparatus and systems to digitally reproduce an original color image. The disclosed embodiments are particularly useful for rendering a color image with a color printing device. According to one exemplary embodiment, an image forming method utilizes three or four rotated hexagonal screens which can include regular shaped hexagon screens or convex tessellated hexagon screens.

摘要翻译： 公开的是无摩尔色彩色调方法，用于数字再现原始彩色图像的装置和系统。 所公开的实施例对于用彩色打印设备渲染彩色图像特别有用。 根据一个示例性实施例，图像形成方法利用三个或四个旋转的六边形屏幕，其可以包括规则形状的六边形屏幕或凸镶嵌的六边形屏幕。

公开(公告)号：US20110150347A1

公开(公告)日：2011-06-23

申请号：US12655216

申请日：2009-12-23

申请人： Shen-ge Wang ,  Beilei Xu ,  Robert P. Loce

发明人： Shen-ge Wang ,  Beilei Xu ,  Robert P. Loce

IPC分类号： G06K9/68

CPC分类号： G06T7/001 ,  G06T2207/10008 ,  G06T2207/30144

摘要： Embodiments described herein are directed to detecting and/or measuring distortions of substrate media that can occur during a printing process. The distortion can be detected and/or measured using a composite image generated from a reference image having a first periodic pattern and print image, disposed on a test substrate media, having a second periodic pattern. The first and second periodic patterns are specified so that the composite image includes a moiré pattern having moiré fringes resulting from interference between the first periodic pattern associated with the reference image and the second periodic pattern associated with the print image. The moiré fringes can be used to detect and calculate an amount of distortion of the test substrate media.

摘要翻译： 本文描述的实施例涉及检测和/或测量可能在印刷过程中发生的基底介质的变形。 可以使用从具有第二周期性图案的设置在测试基板介质上的具有第一周期图案和打印图像的参考图像生成的合成图像来检测和/或测量失真。 指定第一和第二周期性图案，使得合成图像包括具有由与参考图像相关联的第一周期性图案与与打印图像相关联的第二周期性图案之间的干涉而产生的莫尔条纹的莫尔图案。 莫尔条纹可用于检测和计算测试基板介质的变形量。

公开(公告)号：US20110038007A1

公开(公告)日：2011-02-17

申请号：US12539848

申请日：2009-08-12

申请人： Shen-ge Wang ,  Robert P. Loce

发明人： Shen-ge Wang ,  Robert P. Loce

IPC分类号： H04N1/405

CPC分类号： H04N1/4051 ,  H04N1/4058

摘要： Disclosed are moiré-free color halftoning methods, apparatus and systems to digitally reproduce an original color image. The disclosed embodiments are particularly useful for rendering a color image with a color printing device. According to one exemplary embodiment, an image forming method utilizes three or four rotated hexagonal screens which can include regular shaped hexagon screens or convex tessellated hexagon screens.

摘要翻译： 公开的是无摩尔色彩色调方法，用于数字再现原始彩色图像的装置和系统。 所公开的实施例对于用彩色打印设备渲染彩色图像特别有用。 根据一个示例性实施例，图像形成方法利用三个或四个旋转的六边形屏幕，其可以包括规则形状的六边形屏幕或凸镶嵌的六边形屏幕。

公开(公告)号：US07139101B2

公开(公告)日：2006-11-21

申请号：US10285716

申请日：2002-10-31

申请人： Robert P. Loce ,  Beilei Xu ,  Shen-ge Wang

发明人： Robert P. Loce ,  Beilei Xu ,  Shen-ge Wang

IPC分类号： H04N1/405 ,  H04N1/409

CPC分类号： H04N1/4051

摘要： A system and method for the halftoning of gray scale images by utilizing a pixel-by-pixel comparison of the image against an anisotropic stochastic screen is disclosed. The anisotropic stochastic screen comprises a non-deterministic, non-white noise function which, when thresholded, is designed to produce anisotropic dot patterns having a power spectrum characterized as having negligible low frequency components and a high-frequency region which has an absence of stronger dominant spikes.

摘要翻译： 公开了通过利用图像与各向异性随机屏幕的逐像素比较来对灰度图像进行半色调的系统和方法。 各向异性随机屏幕包括非确定性的非白噪声函数，其在阈值时被设计成产生具有特征在于具有可忽略的低频分量的功率谱的各向异性点图形和不存在强度的高频区域 主导尖峰。