公开(公告)号：US08619331B2

公开(公告)日：2013-12-31

申请号：US13185565

申请日：2011-07-19

申请人： Mu Qiao ,  Marc Rene ,  William A. Fuss ,  Shen-ge Wang ,  Paul Conlon

发明人： Mu Qiao ,  Marc Rene ,  William A. Fuss ,  Shen-ge Wang ,  Paul Conlon

IPC分类号： G06K15/00

CPC分类号： G03G15/6585

摘要： A method includes receiving a primary image as input data and receiving textured image data for rendering a perceived non-uniform texture on a printed output of the primary image. The primary image input data is used for determining a low coverage portion and a high coverage portion. The method then includes applying clear toner to the low coverage portion and applying colored toner at variable anisotropic orientations to the high coverage portion.

摘要翻译： 一种方法包括：接收主图像作为输入数据，并接收纹理图像数据，用于在主图像的打印输出上呈现感知到的不均匀纹理。 主图像输入数据用于确定低覆盖部分和高覆盖部分。 该方法然后包括向低覆盖部分施加透明调色剂，并将可变各向异性的着色调色剂施加到高覆盖部分。

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：US20130022753A1

公开(公告)日：2013-01-24

申请号：US13185565

申请日：2011-07-19

申请人： Mu Qiao ,  Marc Rene ,  William A. Fuss ,  Shen-ge Wang ,  Paul Conlon

发明人： Mu Qiao ,  Marc Rene ,  William A. Fuss ,  Shen-ge Wang ,  Paul Conlon

IPC分类号： B05D1/06 ,  B05C11/00

CPC分类号： G03G15/6585

摘要： A method includes receiving a primary image as input data and receiving textured image data for rendering a perceived non-uniform texture on a printed output of the primary image. The primary image input data is used for determining a low coverage portion and a high coverage portion. The method then includes applying clear toner to the low coverage portion and applying colored toner at variable anisotropic orientations to the high coverage portion.

摘要翻译： 一种方法包括：接收主图像作为输入数据，并接收纹理图像数据，用于在主图像的打印输出上呈现感知到的不均匀纹理。 主图像输入数据用于确定低覆盖部分和高覆盖部分。 该方法然后包括向低覆盖部分施加透明调色剂，并将可变各向异性的着色调色剂施加到高覆盖部分。

公开(公告)号：US20090060261A1

公开(公告)日：2009-03-05

申请号：US11897772

申请日：2007-08-31

申请人： Shen-ge Wang

发明人： Shen-ge Wang

IPC分类号： G06T1/00

CPC分类号： G06T1/0028 ,  G06T2201/0051 ,  G06T2201/0061 ,  H04N1/32208 ,  H04N1/32251 ,  H04N1/32256

摘要： Disclosed are systems and methods directed to digital watermarks, and more particularly, the generation of invisible correlation-based digital watermarks embedded in halftone images.

摘要翻译： 公开了针对数字水印的系统和方法，更具体地说，嵌入在半色调图像中的基于隐形相关的数字水印的产生。

公开(公告)号：US20080239344A1

公开(公告)日：2008-10-02

申请号：US11694960

申请日：2007-03-31

申请人： Shen-ge Wang ,  Raja Bala ,  Willey Huaili Wang

发明人： Shen-ge Wang ,  Raja Bala ,  Willey Huaili Wang

IPC分类号： G06K15/00

CPC分类号： G06K15/02 ,  B41J29/393 ,  G06K15/027 ,  H04N1/4015 ,  H04N1/6033

摘要： Methods and systems are presented for calibrating or characterizing a color printer or determining the color response of a color printer to combat spatial non-uniformity, in which color patches are printed on a test page according to an input matrix of input color in a printer-dependent-color space and the test page is measured to provide a corresponding output matrix of output color in a printer-independent-color space. Initial forward and inverse color transforms between the input and the output colors are generated based on the input and the output matrices. The output values are mapped to the input color space based on the initial inverse transform to form a feedback matrix, and spatial non-uniformities present in the printed test page are estimated according to noise values derived from the input matrix and the feedback matrix. The input matrix is modified according to the estimated spatial non-uniformity to form a modified input matrix of input color, and final forward and inverse transforms are generated for the color printer according to the modified input matrix and the output matrix.

摘要翻译： 呈现用于校准或表征彩色打印机的方法和系统，或者确定彩色打印机的颜色响应以对抗空间不均匀性，其中根据打印机的输入颜色的输入矩阵将色块打印在测试页上。 测量依赖颜色空间并测试测试页面，以在独立于打印机的颜色空间中提供输出颜色的相应输出矩阵。 基于输入和输出矩阵生成输入和输出颜色之间的初始正向和反向颜色变换。 基于初始反变换将输出值映射到输入颜色空间以形成反馈矩阵，并且根据从输入矩阵和反馈矩阵导出的噪声值来估计印刷测试页面中存在的空间非均匀性。 输入矩阵根据估计的空间不均匀性进行修改，形成输入颜色的修改输入矩阵，根据修改的输入矩阵和输出矩阵，为彩色打印机生成最终的正向和反向变换。

公开(公告)号：US20080151311A1

公开(公告)日：2008-06-26

申请号：US11615407

申请日：2006-12-22

申请人： Gaurav Sharma ,  Shen-ge Wang

发明人： Gaurav Sharma ,  Shen-ge Wang

IPC分类号： H04N1/40

CPC分类号： H04N1/32144 ,  H04N1/32256 ,  H04N1/32309

摘要： A method for generating an authenticable color image, the color image including a plurality of color separations, wherein an authentication image inserted in the multicolor image is not readily visually perceptible, includes halftoning image data corresponding to a first color separation using a single halftone screen, wherein the halftone screen includes means for generating an authentication image in a color image; and halftoning image data corresponding to a second color separation using the halftone screen and dot placement information for the image data corresponding to the first color separation to form a multicolor image; wherein halftoning of image data corresponding to the second color separation includes placing dots for the second color separation in thresholds of the halftone screen relative to those thresholds occupied by the first color separation in the halftone screen in accordance with a predetermined relationship.

摘要翻译： 一种用于生成可认证彩色图像的方法，所述彩色图像包括多个分色，其中插入所述多色图像中的认证图像不容易在视觉上可感知，包括使用单个半色调屏幕对与第一颜色分离相对应的图像数据进行半色调， 其中所述半色调网屏幕包括用于在彩色图像中生成认证图像的装置; 以及使用所述半色调屏幕对应于第二颜色分离的图像数据和对应于所述第一颜色分离的所述图像数据的点布置信息进行半色调处理，以形成多色图像; 其中对应于所述第二颜色分离的图像数据的半色调包括根据预定关系在所述半色调屏幕中相对于所述半色调屏幕中的所述第一颜色分离占据的所述阈值，在所述半色调屏幕的阈值中放置用于所述第二颜色分离的点。

公开(公告)号：US07148999B2

公开(公告)日：2006-12-12

申请号：US10186065

申请日：2002-06-27

申请人： Beilei Xu ,  Shen-ge Wang ,  Chu-heng Liu

发明人： Beilei Xu ,  Shen-ge Wang ,  Chu-heng Liu

IPC分类号： H04N1/405 ,  G06K15/00 ,  B41M3/10

CPC分类号： H04N1/4058

摘要： The present invention relates to the segmentation of an image into a main area and a image segment for variable glossmark data. By selectively applying halftones with anisotropic structure characteristics which are significantly different in orientation while remaining identical in density to the image segment, a variable glossmark may be superimposed within an image with reduced processing and storage requirements.

摘要翻译： 本发明涉及将图像分割为主区域和用于可变光泽标记数据的图像段。 通过选择性地应用具有各向异性结构特征的半色调，所述各向异性结构特征在取向上显着不同，同时保持与图像片段相同的浓度，可以在减少的处理和存储要求的图像内叠加可变光标。

公开(公告)号：US20060197992A1

公开(公告)日：2006-09-07

申请号：US11070078

申请日：2005-03-02

申请人： Shen-ge Wang

发明人： Shen-ge Wang

IPC分类号： H04N1/405

CPC分类号： H04N1/52

摘要： A stochastic dot-growth sequence for a stochastic screen can be initially compiled into two sections, including at least a first section and at least a section. Additional sections can be provided as necessary (e.g., third, fourth, etc.). The first section provides, for example, from 0% to 50% area coverage, while the section can provide an area coverage of between 50% and 100% depending upon design considerations. For the first section, the sequential values can be utilized to fill corresponding pixels of a “high addressability” stochastic screen. A similar process is then applied to the second section and additional sections, if necessary. In this manner, non-printable sub pixel issues can be avoided while providing improved color stability, smooth transitions, less noise and improved sharpness during rendering via a high addressability stochastic screen.

摘要翻译： 随机屏幕的随机点生长序列最初可以被编译成两个部分，包括至少第一部分和至少一个部分。 可以根据需要提供额外的部分（例如，第三，第四等）。 第一部分提供例如0％至50％的面积覆盖率，而该部分可以根据设计考虑提供50％至100％之间的面积覆盖率。 对于第一部分，顺序值可用于填充“高寻址性”随机屏幕的相应像素。 然后，如果需要，将类似的过程应用于第二部分和附加部分。 以这种方式，可以通过高可寻址性随机屏幕提供不可打印的子像素问题，同时提供改进的颜色稳定性，平滑过渡，较少的噪声和改善的锐度。

公开(公告)号：US06731409B2

公开(公告)日：2004-05-04

申请号：US09773004

申请日：2001-01-31

申请人： Shen-ge Wang

发明人： Shen-ge Wang

IPC分类号： H04N1419

CPC分类号： H04N1/32309 ,  G06T1/0021 ,  H04N1/32256

摘要： The present invention is directed to an improved method for producing color watermarks in digitally reproducible color documents. The color watermarks are generated by producing a halftone pattern, which appears as stochastically distributed dots, in at least one or more color separations of the color document. A second halftone pattern, which also appears as stochastically distributed dots and is spatially displaced from the first halftone pattern, is generated in at least one or more different color separations. Portions of the first and second halftone patterns are auto-correlated or conjugally correlated, therefore, when the two halftone patterns are laid over each other, watermark patterns of highly contrasting colors become markedly visible.

摘要翻译： 本发明涉及一种用于在数字可再现的彩色文档中产生彩色水印的改进方法。 彩色水印通过在彩色文档的至少一个或多个分色中产生出现为随机分布的点的半色调图案而产生。 在至少一个或多个不同的分色中产生第二半色调图案，其也表现为随机分布的点并且从第一半色调图案空间位移。 第一和第二半色调图案的部分是自相关或共轭相关的，因此，当两个半色调图案彼此叠置时，高度对比色的水印图案变得显着可见。

公开(公告)号：US06263086B1

公开(公告)日：2001-07-17

申请号：US09060469

申请日：1998-04-15

申请人： Shen-ge Wang

发明人： Shen-ge Wang

IPC分类号： G06K900

CPC分类号： G06T1/005 ,  G06T2201/0061 ,  G06T2201/0065 ,  H04N1/32149 ,  H04N1/32256 ,  H04N2201/3205 ,  H04N2201/3211 ,  H04N2201/3226 ,  H04N2201/3233 ,  H04N2201/327

摘要： A system for automatic detection and retrieval of embedded invisible digital watermarks retrieves digital watermarks from halftone images. Specifically, by supplying an image to the system, through a process of autocorrelation and shifting, the embedded invisible watermark becomes visible. The process includes scarning or supplying an image to the system, calculating the global autocorrelation of the image, selecting a moving window size, conducting a piecewise localized autocorrelation for each window-sized portion of the image, retrieving the embedded, initially invisible, watermarks, normalizing the resultant image for visualization and displaying the resultant image with the now visible retrieved embedded digital watermarks.

摘要翻译： 用于嵌入式不可见数字水印的自动检测和检索的系统从半色调图像中检索数字水印。 具体地，通过向系统提供图像，通过自相关和移位的处理，嵌入的不可见水印变得可见。 该过程包括将图像扫描或提供给系统，计算图像的全局自相关性，选择移动窗口大小，对图像的每个窗口大小部分进行分段局部自相关，检索嵌入的，最初不可见的水印， 对所得到的图像进行归一化以进行可视化，并用现在可见的检索到的嵌入式数字水印显示所得图像。