公开(公告)号：US20080170280A1

公开(公告)日：2008-07-17

申请号：US11653800

申请日：2007-01-16

申请人： Shen-Ge Wang ,  Charles Michael Hains ,  Jon S. McElvain

发明人： Shen-Ge Wang ,  Charles Michael Hains ,  Jon S. McElvain

IPC分类号： H04N1/46

CPC分类号： G03G15/0115 ,  G03G15/50 ,  G03G2215/0161

摘要： A method and system for estimating color separation misregistration of a printing system. The method may include marking a substrate to form a misregistration estimation patch. The misregistration estimation patch being formed by first and second color separations. The first color separation marking the substrate with a first halftone pattern. The first halftone pattern has a first halftone-frequency vector in a first direction and a second halftone-frequency vector in a second direction. The second color separation marking the substrate with a second halftone pattern. The second halftone pattern has a first halftone-frequency vector in a first direction and a second halftone-frequency vector in a second direction. The first and second halftone patterns form a moiré pattern. A deviation in at least one the halftone frequency vectors and/or the moiré pattern can be indicative of a color separation misregistration. The method also includes estimating the color separation misregistration of the printing system using the misregistration estimation patch.

摘要翻译： 一种用于估计打印系统的颜色分离不对准的方法和系统。 该方法可以包括标记底物以形成不对准估计贴片。 不对准估计贴片由第一和第二分色形成。 用第一半色调图案标记基板的第一分色。 第一半色调图案具有第一方向的第一半色调频率矢量和第二方向上的第二半色调频率矢量。 用第二半色调图案标记衬底的第二颜色分离。 第二半色调图案具有第一方向的第一半色调频率矢量和第二方向上的第二半色调频率矢量。 第一和第二半色调图案形成莫尔图案。 至少一个半色调频率向量和/或莫尔图案的偏差可以指示颜色分离重合失调。 该方法还包括使用不对准估计贴片估计打印系统的颜色分离不对准。

公开(公告)号：US20080130054A1

公开(公告)日：2008-06-05

申请号：US11565470

申请日：2006-11-30

申请人： Shen-Ge Wang ,  Robert P. Loce

发明人： Shen-Ge Wang ,  Robert P. Loce

IPC分类号： G06K15/00

CPC分类号： H04N1/52

摘要： Disclosed herein is a method and apparatus for moiré-free enhanced color halftone printing of color image separations for an arbitrary number of colorants. The method and apparatus utilizes a plurality of halftone screens, >4, to produce outputs that are moiré free and form hexagonal periodic rosettes. The relatively large number of screens can be used for enhanced printing applications, such as printing with high-fidelity colorants, light colorants, or special colorants, such as white, metallics and fluorescents. The method and apparatus provide for defining rosette fundamental frequency vectors VR1, VR2 that satisfy a length and sum requirement to meet visual acceptability standards according to |VR1|>fmin, |VR2|>fmin, and |VR1±VR2|>fmin; defining N halftone screens for colorants i=1, N, respectively possessing first and second frequency vectors (Vi1, Vi2), where no two screens possess identical fundamental frequency vector pairs; and selecting fundamental frequency vectors for the N halftone screens according to (Vi1, Vi2)=(mi1VR1+mi2VR2, ni1VR1+ni2VR2) for integer m's and n's, where at least one fundamental frequency vector or its conjugate must also satisfy one of the following: Vik=VR1, Vik=VR2, and |Vik>2 max [|VR1|, |VR2|].

摘要翻译： 本文公开了一种用于任意数量的着色剂的彩色图像分离的无莫尔增强彩色半色调印刷的方法和装置。 该方法和装置利用多个半色调筛网，以产生无摩擦和形成六边形周期性玫瑰花结的输出。 相对大量的屏幕可以用于增强的打印应用，例如用高保真着色剂，浅色剂或特殊着色剂如白色，金属和荧光物质的印刷。 该方法和装置提供用于定义满足根据| V R1的视觉可接受性标准的长度和和要求的玫瑰花基波矢量V R1，V R2 ，>＆lt; /＆gt;，＆lt; /＆lt; V 2 R 2 min分钟

公开(公告)号：US07304770B2

公开(公告)日：2007-12-04

申请号：US10929811

申请日：2004-08-30

申请人： Shen-Ge Wang ,  Chu-Heng Liu ,  Beilei Xu

发明人： Shen-Ge Wang ,  Chu-Heng Liu ,  Beilei Xu

IPC分类号： H04N1/405 ,  B41M3/10

CPC分类号： H04N1/54 ,  G06K15/02 ,  G06K15/186 ,  H04N1/4058

摘要： A method for reduction of differential gloss as found in halftone image hardcopy prints. The method comprises selecting either a single halftone or employing two halftones: a first halftone having a high apparent gloss characteristic; and a second halftone having a low apparent gloss characteristic. A determination is then made of which areas of the halftone image correspond to potentially high gloss and low gloss regions under normal printing conditions. An overlay of clear toner is applied to the hardcopy print of the halftone image. In one approach a single halftone is employed to control the physical area coverage of the applied clear toner layer so as to adjust the local gloss across for the determined regions and thereby balance the evenness of gloss across the entire hardcopy print of the halftone image. Greater physical area coverage is provided as controlled by the single halftone in low gloss regions, and corresponding less physical area coverage is provided in the low gloss regions. In a further approach two halftones are employed. The first halftone is directed to those portions of the overlaid clear toner determined as corresponding to potentially low gloss regions of the halftone image, and the second halftone is directed to those portions of the clear toner layer determined as overlaying potentially high gloss regions of the halftone image.

摘要翻译： 减少在半色调图像硬拷贝印刷品中发现的差别光泽的方法。 该方法包括选择单个半色调或采用两个半色调：具有高表观光泽特性的第一半色调; 和具有低表观光泽特性的第二半色调。 然后确定半色调图像的哪些区域在正常打印条件下对应于潜在的高光泽度和低光泽度区域。 将透明调色剂的覆盖层应用于半色调图像的硬拷贝印刷。 在一种方法中，使用单个半色调来控制施加的透明调色剂层的物理面积覆盖，以便调整所确定区域的局部光泽度，从而平衡半色调图像的整个硬拷贝印刷品的光泽均匀度。 在低光泽区域由单一半色调控制提供更大的物理面积覆盖，并且在低光泽区域中提供相应较少的物理面积覆盖。 在另一方面，采用两个半色调。 第一个半色调指向重叠的透明调色剂的那些部分，这些部分被确定为对应于半色调图像的潜在的低光泽区域，并且第二半色调指向被确定为覆盖半色调的潜在高光泽区域的透明调色剂层的那些部分 图片。

公开(公告)号：US20070102921A1

公开(公告)日：2007-05-10

申请号：US11263368

申请日：2005-10-31

申请人： Shen-Ge Wang

发明人： Shen-Ge Wang

IPC分类号： B42D15/00

CPC分类号： B42D25/342 ,  G02B27/2214 ,  G02B27/60 ,  G07D7/0032

摘要： Provided herein are teachings directed to the creation of moiré-based auto-stereoscopic watermarks in rendered images. By choosing different halftone structures, which differ by having different spatial frequencies for each of two delineated partitions in an image, it becomes possible to embed arbitrary binary patterns into printed documents as digital watermarks. The invisible watermarks become moiré auto-stereoscopic images when the prints are viewed through an overlaid transparency “decoder” suitably prepared by virtue of being rendered with a uniform halftone structure having the correct special frequency in relationship with the partition frequencies employed in the printed document.

摘要翻译： 本文提供了针对在渲染图像中创建基于莫尔的自动立体水印的教导。 通过选择不同的半色调结构，其通过对于图像中的两个划分的分区中的每一个具有不同的空间频率而不同，可以将任意二进制图案嵌入到打印文档中作为数字水印。 当通过使用具有与打印文档中使用的分区频率相关的正确特殊频率的均匀半色调结构来适当地准备的重叠透明度“解码器”来观看打印时，不可见水印变成莫尔自动立体图像。

公开(公告)号：US20060170975A1

公开(公告)日：2006-08-03

申请号：US11296933

申请日：2005-12-08

申请人： Shen-Ge Wang

发明人： Shen-Ge Wang

IPC分类号： H04N1/405

CPC分类号： H04N1/52 ,  H04N1/4058

摘要： Disclosed herein is a Moire-free color halftone configuration for clustered dots. Unlike conventional methods, the disclosed method produces periodic hexagon rosettes of identical shapes. These exemplary hexagon rosettes have three fundamental spatial frequencies exactly equal to half of the fundamental frequency of the three halftone screens. The resultant halftone outputs are truly Moire free, as all the fundamentals and harmonic frequencies are multiples of and thus higher in frequency than the rosette fundamental frequency. The halftone outputs resulting from the employment of the exemplary rosette design methodology provided herein, are also robust to the typical misregistration among color separations commonly found in color systems.

摘要翻译： 这里公开了一种用于聚集点的无云色的半色调配置。 与常规方法不同，所公开的方法产生具有相同形状的周期性六边形玫瑰花结。 这些示例性六边形花环具有三个基本空间频率，其准确地等于三个半色调屏幕的基频的一半。 所得到的半色调输出是真正的无光泽的，因为所有的基本原理和谐波频率都是频率的倍数，因此频率高于莲座基频。 由于使用本文提供的示例性玫瑰花结构设计方法所产生的半色调输出对于在彩色系统中通常发现的分色中的典型重合不良也是鲁棒的。

公开(公告)号：US20050286083A1

公开(公告)日：2005-12-29

申请号：US10879684

申请日：2004-06-29

申请人： Shen-Ge Wang ,  Chu-Heng Liu ,  Beilei Xu

发明人： Shen-Ge Wang ,  Chu-Heng Liu ,  Beilei Xu

IPC分类号： B41F23/08 ,  B41M3/14 ,  G03G8/00 ,  G03G21/04 ,  G06K15/00 ,  H04N1/00 ,  H04N1/54

CPC分类号： G03G21/043 ,  G03G8/00 ,  G03G15/6585 ,  G03G2215/0081 ,  G03G2215/00932 ,  H04N1/00883 ,  H04N1/54

摘要： The present invention relates to creating differential gloss images in clear toner by the manipulation of halftones employed prior to the depositing of the clear toner layer upon a substrate. By selectively applying halftones with anisotropic structure characteristics which are significantly different in orientation although remaining identical in density, a differential gloss image may be superimposed within even clear toner as applied to paper. Further, this technique may be used to enhance color toner Glossmark images across the low and high density areas of application where the differential gloss effect would otherwise be weak.

摘要翻译： 本发明涉及通过在将透明调色剂层沉积在基底上之前使用的半色调来产生透明调色剂中的差异光泽图像。 通过选择性地施加具有各向异性结构特征的半色调，其取向方面显着不同，尽管密度保持相同，但是当施加到纸上时，可将均匀透明的调色剂中的差异光泽图像叠加。 此外，该技术可以用于增强彩色调色剂在低和高密度应用领域的图像，其中差别光泽效果否则将是弱的。

公开(公告)号：US06501567B2

公开(公告)日：2002-12-31

申请号：US09737537

申请日：2000-12-15

申请人： Gaurav Sharma ,  Shen-Ge Wang

发明人： Gaurav Sharma ,  Shen-Ge Wang

IPC分类号： G06K1500

CPC分类号： H04N1/52

摘要： A method and system for designing a plurality of correlated stochastic screens or conjugate screen portions intended for use in color halftoning of a corresponding plurality of color separations. A merit function is associated with each screen or screen portion. The merit function represents a measure of the desirability of the screen, particularly with regard to maximizing ink dispersion and optimizing spatial frequency response. An additional merit function value is associated with a combination of the screens and screen portions. Additional merit function represents a measure of desirability of the screen combination with regard to ink dispersion and combined spatial frequency response. The merit functions are iteratively applied to possible screens until an optimized merit value is calculated. The screens are selected that correspond to the optimized merit value. The image is generated using the selected screens in a conventional color halftoning process with a plurality of color separations.

摘要翻译： 一种用于设计用于对应的多个分色的彩色半色调的多个相关随机屏幕或共轭屏幕部分的方法和系统。 优点功能与每个屏幕或屏幕部分相关联。 优点函数表示屏幕的可取性的量度，特别是关于最大化油墨色散和优化空间频率响应。 另外的优点功能值与屏幕和屏幕部分的组合相关联。 额外的功能函数表示对于油墨分散和组合空间频率响应的屏幕组合的期望性的度量。 优点函数被迭代地应用于可能的屏幕，直到计算优化的优值。 选择与优化值相对应的屏幕。 在具有多个分色的常规彩色半色调处理中使用所选择的屏幕生成图像。

公开(公告)号：US08462389B2

公开(公告)日：2013-06-11

申请号：US12405737

申请日：2009-03-17

申请人： Vishal Monga ,  Shen-Ge Wang ,  Raja Bala

发明人： Vishal Monga ,  Shen-Ge Wang ,  Raja Bala

IPC分类号： H04N1/405

CPC分类号： H04N1/6033

摘要： A method and system is disclosed for characterizing a color scanner comprising generating a halftone-independent target of color patches, printing the target on a color hardcopy device, measuring the target to obtain device-independent color values, scanning the target to obtain scanner color values, and building a scanner profile that relates scanned color values to device-independent color values.

摘要翻译： 公开了一种用于表征彩色扫描仪的方法和系统，该彩色扫描仪包括产生色调不依赖于色块的目标，在彩色硬拷贝装置上打印目标，测量目标以获得与装置无关的色彩值，扫描目标以获得扫描仪颜色值 ，并构建扫描仪配置文件，将扫描的颜色值与设备无关的颜色值相关联。

公开(公告)号：US08451501B2

公开(公告)日：2013-05-28

申请号：US12966244

申请日：2010-12-13

申请人： Beilei Xu ,  Joseph C. Sheflin ,  Shen-Ge Wang ,  Robert P. Loce ,  Jack T. LeStrange

发明人： Beilei Xu ,  Joseph C. Sheflin ,  Shen-Ge Wang ,  Robert P. Loce ,  Jack T. LeStrange

IPC分类号： H04N1/405 ,  H04N1/40 ,  G06K9/00 ,  G06K9/46

CPC分类号： G06T1/0092 ,  G06T2201/0051

摘要： Provided are methods, apparatus and systems related to watermark decoding via spectral analysis of an image. According to one exemplary method, spectral analysis is performed to decode a watermark within an image, where the pixel spacing associated with the image was modulated to encode the watermark.

摘要翻译： 提供了通过图像的光谱分析与水印解码相关的方法，装置和系统。 根据一个示例性方法，执行频谱分析以对图像内的水印进行解码，其中与图像相关联的像素间隔被调制以对水印进行编码。

公开(公告)号：US08314978B2

公开(公告)日：2012-11-20

申请号：US12356897

申请日：2009-01-21

申请人： Vishal Monga ,  Shen-Ge Wang ,  Raja Bala

发明人： Vishal Monga ,  Shen-Ge Wang ,  Raja Bala

IPC分类号： H04N1/46

CPC分类号： H04N1/6033 ,  H04N1/4078

摘要： A model-based halftone independent method for characterizing a printer equipped with a plural of halftone screens comprises: printing a target set of basic patches comprised of a fundamental binary pattern independent of a halftone screen; measuring true color printer response from the target set; modeling a halftone independent characterization of the printer with the mathematical transformation using the measured response; modeling a first halftone dependent characterization of the printer with the mathematical transformer to generate a first predicted result using a selected halftone screen; comparing a measured response of the printer using the halftone screen with the predicted result to define a correction factor corresponding to the halftone screen; and modeling a halftone dependent characterization of the printer using a predicted response of the fundamental binary pattern and the correction factor.

摘要翻译： 用于表征配备有多个半色调网版的打印机的基于模型的半色调独立方法包括：打印由基本二进制图案独立于半色调屏幕组成的基本色块的目标集合; 测量来自目标组的真彩打印机响应; 使用测量响应的数学变换建模打印机的半色调独立表征; 使用数学变压器对打印机的第一半色调依赖特征进行建模，以使用所选择的半色调屏幕产生第一预测结果; 将使用半色调屏幕的打印机的测量响应与预测结果进行比较，以定义对应于半色调屏幕的校正因子; 以及使用基本二进制模式和校正因子的预测响应对打印机的半色调依赖特征进行建模。