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91. 发明授权

US08169657B2 Registration method using sensed image marks and digital realignment 有权
标题翻译：使用感测图像标记和数字重新对准的注册方法
公开(公告)号：US08169657B2
公开(公告)日：2012-05-01
申请号：US11801231
申请日：2007-05-09
申请人： Shen-Ge Wang , Robert P. Loce
发明人： Shen-Ge Wang , Robert P. Loce
IPC分类号： G06K15/10 , B41J2/385
CPC分类号： H04N1/50 , G06F3/1205 , G06F3/1208 , G06F3/1242 , G06F3/1244 , G06F3/1253 , G06F3/1284
摘要： A method of registering a print between print stages in a printing system is provided. The method comprises: printing a first part of a digital image on a substrate with a first print engine, wherein the first part of the digital image includes a plurality of reference features; scanning image content on the substrate as it is readied for the second print engine; determining the actual positions of the reference features; using the actual positions of the reference features to determine desired adjustments for the second part of the digital image; applying electronic registration according to the desired adjustments to modify image content of the second print to be aligned with content already on the substrate; and printing a second part of the digital image on the substrate.
摘要翻译：提供了一种在打印系统中的打印阶段之间注册打印的方法。该方法包括：用第一打印引擎在基板上印刷数字图像的第一部分，其中数字图像的第一部分包括多个参考特征; 在准备用于第二打印引擎的基板上扫描图像内容; 确定参考特征的实际位置; 使用参考特征的实际位置来确定数字图像的第二部分的期望的调整; 根据期望的调整来应用电子登记来修改第二印刷品的图像内容以与已经在基板上的内容对齐; 以及在所述基底上印刷所述数字图像的第二部分。

92. 发明授权

US08164788B2 Cluster-based printer model for tone reproduction curve estimation 有权
标题翻译：用于色调再现曲线估计的基于簇的打印机模型
公开(公告)号：US08164788B2
公开(公告)日：2012-04-24
申请号：US12190695
申请日：2008-08-13
申请人： Shen-Ge Wang , David C. Craig , Fan Shi
发明人： Shen-Ge Wang , David C. Craig , Fan Shi
IPC分类号： G06F15/00 , G06K1/00
CPC分类号： H04N1/4078 , H04N1/4055
摘要： What is disclosed is a system and method for efficiently and accurately estimating the complete TRC for a color marking device equipped with a multi-center cluster halftone screen which has a similar halftone tiling geometry and a similar growth specified by a corresponding single-center cluster halftone screen. The present method introduces a cluster-based printer model which establishes a relationship between a color output of a single-center cluster halftone screen and a color output of a multi-center cluster halftone screen. The present cluster-based printer model determines the complete TRC for the multi-center cluster halftone screen using the measurements for the single-center cluster halftone screen. Results of halftone dot linearization with different printing devices demonstrates that high accuracy can be achieved using the reduced measurements from the single-center cluster halftone screen. The present method finds its uses in characterization processes for a wide variety of color marking devices known in the arts.
摘要翻译：所公开的是用于有效和准确地估计配备有多中心集群半色调屏幕的彩色标记设备的完整TRC的系统和方法，其具有类似的半色调平铺几何形状和由对应的单中心集群半色调指定的类似增长屏幕。本方法引入基于群集的打印机模型，该模型建立了单中心群集半色调屏幕的颜色输出与多中心群集半色调屏幕的颜色输出之间的关系。目前基于群集的打印机型号使用单中心集群半色调屏幕的测量来确定多中心集群半色调屏幕的完整TRC。使用不同打印设备的半色调点线性化的结果表明，使用来自单中心集群半色调屏幕的减少的测量可以实现高精度。本方法在用于本领域已知的各种颜色标记装置的表征过程中发现其用途。

93. 发明授权

US08077357B2 Content-aware resizing of uniform rosette color halftone images 有权
标题翻译：内容感知尺寸均匀玫瑰花色彩半色调图像
公开(公告)号：US08077357B2
公开(公告)日：2011-12-13
申请号：US12242183
申请日：2008-09-30
申请人： Edgar Bernal , Robert P Loce , Shen-Ge Wang
发明人： Edgar Bernal , Robert P Loce , Shen-Ge Wang
IPC分类号： G06K15/00 , G06K15/02 , G06K9/32
CPC分类号： H04N1/40075 , H04N1/393 , H04N1/52
摘要： As provided herein, there are supplied teachings to systems and methods for resizing a digital uniform rosette halftone image composed of multiple colorant separations, by using uniform rosette halftone tile parameters. One approach entails receiving into a digital imaging system, a digital uniform rosette halftone image and a desired resizing factor for that digital uniform rosette halftone image. Subsequently the system will define uniform rosette cells within the color uniform rosette digital halftone image. From the defined uniform rosette cells, a number of uniform rosette halftone tile seams are determined for manipulation. The orientation of the number of uniform rosette halftone tile seams is dictated by the received desired resizing factor. An energy map of the digital uniform rosette halftone image is determined according to an energy metric derived from the multiple colorant separations. The energy of the number of uniform rosette halftone tile seams within the energy map is determined so as to provide indication of at least one low energy determined uniform rosette halftone tile seam. A resizing of the uniform rosette halftone image by manipulating the at least one low energy determined uniform rosette halftone tile seam is performed so as to obtain a resized uniform rosette halftone image. The resized uniform rosette halftone image may then be printed on a printer.
摘要翻译：如本文所提供的，通过使用均匀的玫瑰花半色调瓦片参数，提供了用于调整由多个着色剂分离组成的数字均匀玫瑰花半色调图像的系统和方法的教导。一种方法需要接收数字成像系统，数字均匀花莲半色调图像和用于该数字均匀花莲半色调图像的期望的调整大小因子。随后，系统将在彩色均匀玫瑰花数字半色调图像内定义均匀的玫瑰花结构细胞。从定义的均匀花环细胞中，确定了许多均匀的玫瑰花半色调瓷砖接缝用于操纵。均匀玫瑰状半色调瓷砖接缝数量的取向由接收到的所需调整尺寸系数决定。根据从多个着色剂分离得到的能量度量来确定数字均匀花莲半色调图像的能量图。确定能量图内均匀玫瑰状半色调瓷砖接缝数量的能量，以便提供至少一种低能量确定的均匀玫瑰花半色调瓦片接缝的指示。通过操作至少一个低能量确定的均匀玫瑰花半色调瓷砖接缝来调整均匀玫瑰状半色调图像的大小，以获得调整尺寸的均匀玫瑰花色半色调图像。然后可以在打印机上打印调整大小的均匀花莲半色调图像。

94. 发明授权

US07933044B2 Moiré-free color halftone configuration 有权
标题翻译：无摩尔色彩半色调配置
公开(公告)号：US07933044B2
公开(公告)日：2011-04-26
申请号：US12333883
申请日：2008-12-12
申请人： Shen-Ge Wang
发明人： Shen-Ge Wang
IPC分类号： G06F15/00 , G06K1/00 , H04N1/60
CPC分类号： H04N1/52 , H04N1/4058
摘要： Disclosed herein is a Moiré-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 Moiré 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：本文公开了一种用于聚集点的无莫里颜色半色调配置。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莫尔自由的，因为所有的基本因素和谐波频率都是频率的倍数，因此频率高于玫瑰花基频。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。

95. 发明授权

US07894626B2 System and method for the generation of multiple angle correlation-based digital watermarks 有权
标题翻译：用于生成基于多角度相关的数字水印的系统和方法
公开(公告)号：US07894626B2
公开(公告)日：2011-02-22
申请号：US11848908
申请日：2007-08-31
申请人： Shen-Ge Wang , Robert J. Rolleston
发明人： Shen-Ge Wang , Robert J. Rolleston
IPC分类号： G06K9/00
CPC分类号： G06T1/0021 , G06T2201/0051 , H04N1/32251
摘要： Disclosed are systems and methods directed to the generation of digitally watermarked grayscale images having a watermark embedded at different arbitrary Rotation Angles. A single public key can be used to retrieve the otherwise invisible watermarks from the watermarked images when overlaid atop the images at Orientation Angles corresponding to the Rotation Angles.
摘要翻译：公开了涉及生成具有以不同的任意旋转角度嵌入的水印的数字水印灰度图像的系统和方法。当对应于旋转角度的定向角度处的图像上方重叠时，可以使用单个公钥来从水印图像中检索否则不可见的水印。

96. 发明授权

US07826095B2 System and method for estimating color separation misregistration utilizing frequency-shifted halftone patterns that form a moiré pattern 有权
标题翻译：用于使用形成莫尔图案的频移半色调图案来估计颜色分离重合失调的系统和方法
公开(公告)号：US07826095B2
公开(公告)日：2010-11-02
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： H04N1/40 , G06K9/34
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。

97. 发明申请

US20090213430A1 System and Method for the Generation of Correlation-Based Digital Watermarks Using Uniform-Rosette Color Halftoning 有权
标题翻译：用于使用均匀玫瑰色彩色半色调生成相关数字水印的系统和方法
公开(公告)号：US20090213430A1
公开(公告)日：2009-08-27
申请号：US12036481
申请日：2008-02-25
申请人： Shen-Ge Wang
发明人： Shen-Ge Wang
IPC分类号： H04N1/405 , G06K15/00
CPC分类号： H04N1/52 , H04N1/32203 , H04N1/32256 , H04N1/32309
摘要： Systems and method for digitally reproducing a moiré-free color halftone output image having an embedded correlation-based digital watermark are provided using an enhanced halftone screen set consisting of a halftone screen for each of N colorants forming N color separations (where N≧3). The N different uniform rosette halftone screen configurations are generated such that each meets uniform rosette halftone screen conditions. A corresponding three-dimensional threshold array is generated for each halftone screen configuration having a phase shift value as an input. The color input image is halftoned, halftoning each one of the N different color separations using a corresponding halftone screen configuration and three-dimensional threshold array to form a moiré-free color output image having the correlation-based digital watermark embedded therein. A single key can be used to produce a full color image of the output image having the watermark image visible therein.
摘要翻译：使用由用于形成N个色彩分离的N个着色剂中的每一个（其中N> = 3）的半色调屏幕组成的增强型半色调屏幕组提供用于数字再现具有嵌入式相关性数字水印的无云纹颜色半色调输出图像的系统和方法）。产生N种不同的均匀玫瑰色半色调网屏配置，使得每个均匀的玫瑰花半色调屏幕条件均满足。对于具有相移值作为输入的每个半色调屏幕配置，生成相应的三维阈值阵列。色彩输入图像被半色调，使用相应的半色调网络配置和三维阈值阵列对N个不同颜色分色中的每一个进行中间色调，以形成其中嵌入有相关性数字水印的无摩尔色彩输出图像。可以使用单个键来产生其中具有水印图像的输出图像的全色图像。

98. 发明申请

US20090060258A1 System and Method for the Generation of Multiple Angle Correlation-Based Digital Watermarks 有权
标题翻译：用于生成多角度相关数字水印的系统和方法
公开(公告)号：US20090060258A1
公开(公告)日：2009-03-05
申请号：US11848908
申请日：2007-08-31
申请人： Shen-Ge Wang , Robert J. Rolleston
发明人： Shen-Ge Wang , Robert J. Rolleston
IPC分类号： G06K9/00
CPC分类号： G06T1/0021 , G06T2201/0051 , H04N1/32251
摘要： Disclosed are systems and methods directed to the generation of digitally watermarked grayscale images having a watermark embedded at different arbitrary Rotation Angles. A single public key can be used to retrieve the otherwise invisible watermarks from the watermarked images when overlaid atop the images at Orientation Angles corresponding to the Rotation Angles.
摘要翻译：公开了涉及生成具有以不同的任意旋转角度嵌入的水印的数字水印灰度图像的系统和方法。当对应于旋转角度的定向角度处的图像上方重叠时，可以使用单个公钥来从水印图像中检索否则不可见的水印。

99. 发明申请

US20090027730A1 Halftone independent correction of spatial non-uniformities 有权
标题翻译：半色调独立校正空间非均匀性
公开(公告)号：US20090027730A1
公开(公告)日：2009-01-29
申请号：US11881263
申请日：2007-07-26
申请人： Vishal Monga , Shen-Ge Wang , Raja Bala
发明人： Vishal Monga , Shen-Ge Wang , Raja Bala
IPC分类号： G06K15/00
CPC分类号： G06K15/02 , G06K15/027 , H04N1/52 , H04N1/6027 , H04N1/6033
摘要： A method and apparatus are provided for compensating for spatial non-uniformities in a printer by deriving a true spatial non-uniformity tone response curve (TRC) that characterizes the printer in terms of color output variation for each addressable pixel location in a spatial range. In a one-time offline process, the “true average” tone response curve is determined for a color channel and stored. The “true average” tone response curve defines an average true response for the printer across the printed output spatial range. A prediction of the true response as a function of the spatial location is derived by printing and scanning a specially designed halftone-independent target of binary patterns. The predicted tone response curve for each color channel and halftone is predicted using a binary printer model and stored, wherein the “predicted tone response curve” provides a model based approximation of the actual response for the printer for each addressable pixel location in the spatial range. Also stored is an “average predicted tone response” by averaging the “predicted tone response curve” over the spatial range of the printer. With the “true average” tone response curve, the “predicted tone response curve”, and the “average predicted tone response curve”, an estimate of the true tone response curve for the color channel can then be mathematically obtained, wherein the true tone response curve defines a predicted actual response for the printer for each addressable print location in the spatial range. The “predicted” and “average” tone response curves are obtained using the 2×2 binary printer model.
摘要翻译：提供了一种方法和装置，用于通过根据空间范围内的每个可寻址像素位置的颜色输出变化导出表征打印机的真实空间不均匀色调响应曲线（TRC）来补偿打印机中的空间非均匀性。在一次离线过程中，为颜色通道确定“真实平均”色调响应曲线并进行存储。 “真正平均”色调响应曲线定义了打印机在打印输出空间范围内的平均真实响应。作为空间位置的函数的真实响应的预测是通过打印和扫描专门设计的与二元模式无关的目标的二进制模式得出的。每个颜色通道和半色调的预测色调响应曲线使用二进制打印机模型预测并存储，其中“预测色调响应曲线”为空间范围内的每个可寻址像素位置提供基于打印机的实际响应的基于模型的近似。还通过在打印机的空间范围上对“预测色调响应曲线”进行平均，还存储“平均预测色调响应”。利用“真实平均”音调响应曲线，“预测音响响应曲线”和“平均预测音响响应曲线”，可以数学地获得颜色通道的真实色调响应曲线的估计，其中真正的音调响应曲线定义了空间范围内每个可寻址打印位置的打印机预测的实际响应。使用2x2二进制打印机模型获得“预测”和“平均”音调响应曲线。

100. 发明授权

US07388989B2 Method for run-time streak detection by profile analysis 有权
标题翻译：通过剖面分析进行运行时条纹检测的方法
公开(公告)号：US07388989B2
公开(公告)日：2008-06-17
申请号：US10992865
申请日：2004-11-19
申请人： Shen-Ge Wang
发明人： Shen-Ge Wang
IPC分类号： G06K9/40 , G06K9/48 , G06K15/00 , G06T5/00 , H04N1/407 , H04N1/409
CPC分类号： H04N1/4097
摘要： Disclosed is a method to detect streaks in the scanned documents. The principle of this method is that the profiles of streaks change very little from line to line, while profiles of other thin lines, as content of scanned documents, usually vary in a degree. Therefore, each scan-line can be searched for streak profiles. Once such a profile is detected, it is compared with a profile stored in a buffer, which represents a dynamic average of previously recorded scan-lines. If a stable streak profile is detected and lasted for a certain length, say one inch, the streak alarm can be turned on and a corresponding correction process can be applied for streak removal. With a limited buffer increase and without any major hardware modification, the proposed method can detect occurrence of streaks at run time of the scanning process.
摘要翻译：公开了一种检测扫描文档中的条纹的方法。这种方法的原理是，条纹的轮廓从一行到另一方变化很小，而作为扫描文档的内容的其他细线的轮廓通常在一定程度上变化。因此，可以搜索每条扫描线的条纹轮廓。一旦检测到这样的轮廓，就将其与存储在缓冲器中的轮廓进行比较，这表示先前记录的扫描线的动态平均值。如果检测到稳定的条纹轮廓并持续一定长度，例如一英寸，则可以打开条纹报警，并且可以应用相应的校正过程来进行条纹去除。在缓冲区有限的情况下，没有任何主要的硬件修改，所提出的方法可以检测扫描过程运行时的条纹发生。

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