公开(公告)号：US08830533B2

公开(公告)日：2014-09-09

申请号：US13552162

申请日：2012-07-18

申请人： Zhigang Fan ,  Yonghui Zhao ,  Shen-Ge Wang ,  Hengzhou Ding

发明人： Zhigang Fan ,  Yonghui Zhao ,  Shen-Ge Wang ,  Hengzhou Ding

IPC分类号： H04N1/40

CPC分类号： G06K19/06103

摘要： A process for creating a barcode with an embedded logo considers a printer gamut and divides the printer gamut into multiple regions. A virtual printer gamut is then generated with the colors in bright and dark regions. A target logo image is generated by mapping the virtual gamut to the original logo image. A logo with embedded barcode is produced using the colors specified in the target logo image.

摘要翻译： 用于创建具有嵌入式徽标的条形码的过程考虑了打印机色域并将打印机色域划分成多个区域。 然后在明暗区域中产生虚拟打印机色域。 通过将虚拟色域映射到原始徽标图像来生成目标标志图像。 使用目标标志图像中指定的颜色生产带有嵌入式条形码的徽标。

公开(公告)号：US08576451B2

公开(公告)日：2013-11-05

申请号：US13178962

申请日：2011-07-08

申请人： Shen-Ge Wang ,  Zhigang Fan ,  Robert Paul Loce

发明人： Shen-Ge Wang ,  Zhigang Fan ,  Robert Paul Loce

IPC分类号： H04N1/405 ,  G03G15/01 ,  G03G13/04 ,  G09G5/02

CPC分类号： H04N1/405 ,  H04N1/52

摘要： As set forth herein, computer-implemented methods and systems facilitate the generation of halftone screens for moiré-free color halftoning. A first fundamental frequency vector and a second fundamental frequency vector of a halftone cell are sheared using a selected shearing value. The shearing value is selected as an offset in a fast scanning or slow scanning direction. The selected shearing value satisfies various moiré-free conditions associated with the identified frequency vectors and is capable of being selected for multiple halftone screens. The halftone screens generated using the sheared frequency vectors are used for moiré-free halftoning.

摘要翻译： 如本文所述，计算机实现的方法和系统有助于产生用于无莫尔色彩色调的半色调屏幕。 使用选择的剪切值剪切半色调单元的第一基频和第二基频矢量。 选择剪切值作为快扫或慢扫描方向的偏移量。 所选择的剪切值满足与识别的频率矢量相关的各种无摩擦条件，并且能够被选择用于多个半色调屏幕。 使用剪切频率矢量产生的半色调网屏幕用于无摩纹半色调。

公开(公告)号：US08233197B2

公开(公告)日：2012-07-31

申请号：US12275036

申请日：2008-11-20

申请人： Shen-Ge Wang ,  Zhigang Fan

发明人： Shen-Ge Wang ,  Zhigang Fan

IPC分类号： H04N1/40 ,  H04N1/60 ,  G06K15/00 ,  G06K9/00 ,  H04L9/32 ,  B42D15/00

CPC分类号： G06K1/123

摘要： The disclosure provides pantograph methods, apparatus and systems. Specifically disclosed is a method of rendering a pantograph including defining a foreground region associated with a pantograph, defining a background region associated with the pantograph, and applying a first UCR/GCR strategy to the background region and a second UCR/GCR strategy to the foreground region, whereby the foreground region is less discernable after the pantograph is rendered with a printing device relative to a reproduction of the rendered pantograph.

摘要翻译： 本公开提供了缩放仪方法，装置和系统。 具体公开了一种渲染缩放仪的方法，包括定义与缩放仪相关联的前景区域，定义与缩放仪相关联的背景区域，以及将第一UCR / GCR策略应用于背景区域，以及将第二UCR / GCR策略应用于前景 区域，由此在使用打印装置渲染缩放仪之后，相对于再现的缩放仪的前景区域较少可辨别。

公开(公告)号：US08774450B2

公开(公告)日：2014-07-08

申请号：US13093130

申请日：2011-04-25

申请人： Zhigang Fan ,  Shen-Ge Wang

发明人： Zhigang Fan ,  Shen-Ge Wang

IPC分类号： G06K9/48

CPC分类号： G06T1/0028 ,  G06T2201/0051 ,  G06T2201/0062

摘要： Described herein is a level I (overt) feature for security printing intended to deter unauthorized modification of text documents. The exemplary method includes generating a textured background that follows the contour of the text it surrounds and is difficult to modify. The background patterns may be generated with a two-step procedure that first creates a smooth function and then modulates it to produce patterns with sharp contrast. Tampering will be deterred as visible artifacts will be created when text is altered. Compared to the levels II and III features, the exemplary method relies on human vision for detection and does not require any special tools and instruments. It can be used in applications where fast, simple and inexpensive inspection is essential, or combined with other technologies for enhancing overall effectiveness.

摘要翻译： 这里描述的是用于防止非法修改文本文档的安全打印的I级（公开）特征。 示例性方法包括生成跟随其围绕的文本轮廓的纹理背景，并且难以修改。 背景图案可以通过两步过程产生，其首先创建平滑功能，然后调制它以产生具有鲜明对比度的图案。 篡改将被阻止，因为当文字被改变时会产生可见的文物。 与II和III级特征相比，该示例性方法依赖于人类视觉进行检测，并且不需要任何特殊的工具和仪器。 它可用于快速，简单和廉价检查至关重要的应用，或与其他技术相结合，以提高整体效能。

公开(公告)号：US20120269433A1

公开(公告)日：2012-10-25

申请号：US13093130

申请日：2011-04-25

申请人： Zhigang Fan ,  Shen-Ge Wang

发明人： Zhigang Fan ,  Shen-Ge Wang

IPC分类号： G06K9/34

CPC分类号： G06T1/0028 ,  G06T2201/0051 ,  G06T2201/0062

摘要： Described herein is a level I (overt) feature for security printing intended to deter unauthorized modification of text documents. The exemplary method includes generating a textured background that follows the contour of the text it surrounds and is difficult to modify. The background patterns may be generated with a two-step procedure that first creates a smooth function and then modulates it to produce patterns with sharp contrast. Tampering will be deterred as visible artifacts will be created when text is altered. Compared to the levels II and III features, the exemplary method relies on human vision for detection and does not require any special tools and instruments. It can be used in applications where fast, simple and inexpensive inspection is essential, or combined with other technologies for enhancing overall effectiveness.

摘要翻译： 这里描述的是用于防止非法修改文本文档的安全打印的I级（公开）特征。 示例性方法包括生成跟随其围绕的文本轮廓的纹理背景，并且难以修改。 背景图案可以通过两步过程产生，其首先创建平滑功能，然后调制它以产生具有鲜明对比度的图案。 篡改将被阻止，因为当文字被改变时会产生可见的文物。 与II和III级特征相比，该示例性方法依赖于人类视觉进行检测，并且不需要任何特殊的工具和仪器。 它可用于快速，简单和廉价检查至关重要的应用，或与其他技术相结合，以提高整体效能。

公开(公告)号：US06798539B1

公开(公告)日：2004-09-28

申请号：US09698104

申请日：2000-10-30

申请人： Shen-Ge Wang ,  Zhigang Fan ,  Zhenhuan Wen

发明人： Shen-Ge Wang ,  Zhigang Fan ,  Zhenhuan Wen

IPC分类号： H04N152

CPC分类号： H04N1/52

摘要： The invention provides methods for using single-cell non-orthogonal cluster screens to satisfy the moiré-free conditions for color halftoning. The invention also provides methods that combine single-cell non-orthogonal cluster screens and line screens for moiré-free color halftoning. Particularly, the selection of these single-cell halftone screens is determined by satisfying moiré-free conditions provided in the respective spatial or frequency equations.

摘要翻译： 本发明提供了使用单细胞非正交聚类屏幕来满足无色无色条件进行彩色半色调的方法。 本发明还提供了组合单细胞非正交簇屏和用于无莫尔色调的线屏的方法。 特别地，通过满足在相应的空间或频率方程式中提供的无摩尔条件来确定这些单电池半色调屏幕的选择。

公开(公告)号：US20130215473A1

公开(公告)日：2013-08-22

申请号：US13552162

申请日：2012-07-18

申请人： Zhigang Fan ,  Yonghui Zhao ,  Shen-Ge Wang ,  Hengzhou Ding

发明人： Zhigang Fan ,  Yonghui Zhao ,  Shen-Ge Wang ,  Hengzhou Ding

IPC分类号： G06K15/02

CPC分类号： G06K19/06103

摘要： A process for creating a barcode with an embedded logo considers a printer gamut and divides the printer gamut into multiple regions. A virtual printer gamut is then generated with the colors in bright and dark regions. A target logo image is generated by mapping the virtual gamut to the original logo image. A logo with embedded barcode is produced using the colors specified in the target logo image.

摘要翻译： 用于创建具有嵌入式徽标的条形码的过程考虑了打印机色域并将打印机色域划分成多个区域。 然后在明暗区域中产生虚拟打印机色域。 通过将虚拟色域映射到原始徽标图像来生成目标标志图像。 使用目标标志图像中指定的颜色生产带有嵌入式条形码的徽标。

公开(公告)号：US08339674B2

公开(公告)日：2012-12-25

申请号：US13300845

申请日：2011-11-21

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

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

IPC分类号： H04N1/401 ,  H04N1/405 ,  H04N1/407 ,  H04N1/50 ,  H04N1/52 ,  H04N1/60 ,  G03F3/10

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. The “true average” tone response curve is determined for a color channel. 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, wherein the “predicted tone response curve” provides a model based approximation of the actual response 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.

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。 确定颜色通道的真实平均色调响应曲线。 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。 使用二进制打印机模型来预测每个颜色通道和半色调的预测色调响应曲线，其中预测色调响应曲线为空间范围中的每个可寻址像素位置提供基于模型的近似实际响应。 还通过在打印机的空间范围上平均预测的音调响应曲线来存储平均预测的音调响应。

公开(公告)号：US08045218B2

公开(公告)日：2011-10-25

申请号：US12251808

申请日：2008-10-15

申请人： Mu Qiao ,  Robert P. Loce ,  Shen-Ge Wang ,  Daniel W. Costanza ,  Rakesh S. Kulkarni

发明人： Mu Qiao ,  Robert P. Loce ,  Shen-Ge Wang ,  Daniel W. Costanza ,  Rakesh S. Kulkarni

IPC分类号： H04N1/58

CPC分类号： H04N1/407 ,  G03G15/5062 ,  G03G2215/0161

摘要： A digital image processing method. The method includes printing a first set of reference marks on one side of a substrate with a first print engine; printing a second set of reference marks on the same side of the substrate as the first set of reference marks with a second print engine; sensing both sets of reference marks on the substrate with an image sensing unit and generating a digital image of the reference marks; performing image analysis on the digital image to obtain an image-to-image distortion map where the image-to-image distortion map is a local measure of difference between the first set of reference marks and the second set of reference marks; and generating a compensated customer image by using the image-to-image distortion map to reduce registration errors when using the first and second print engines.

摘要翻译： 数字图像处理方法。 该方法包括用第一印刷引擎在基板的一侧上印刷第一组参考标记; 使用第二打印引擎在与所述第一组参考标记的所述基板的相同侧上打印第二组参考标记; 用图像感测单元感测基板上的两组参考标记，并产生参考标记的数字图像; 对数字图像执行图像分析以获得图像到图像失真图，其中图像到图像失真图是第一组参考标记和第二组参考标记之间的差的局部度量; 以及通过使用图像到图像失真图来生成补偿的客户图像，以减少当使用第一和第二打印引擎时的注册错误。

公开(公告)号：US07672020B2

公开(公告)日：2010-03-02

申请号：US11263142

申请日：2005-10-31

申请人： Shen-Ge Wang

发明人： Shen-Ge Wang

IPC分类号： H04N1/40

CPC分类号： B41M3/06 ,  B41J3/60 ,  G02B27/225 ,  G02B27/60

摘要： Method for duplex printing on transparencies to create auto-stereoscopic enhancement to rendered images. On one side of the transparency is provided a uniform halftone with a selected median spatial frequency as printed. On the other side, the image for enhanced rendering consisting of two partitions is printed: that partition which is to be perceived as the background is printed using a halftone with spatial frequency equal to the median plus some delta x, while the other image partition is printed using a halftone with a spatial frequency equal to the median minus the same delta x. The spatial frequency difference creates a corresponding shift-magnification factor M with an amplified total depth of the shift-magnification factor M times the thickness of the transparency.

摘要翻译： 在透明胶片上双面打印以创建自动立体增强渲染图像的方法。 在透明度的一面上提供具有所选中位数空间频率的均匀半色调。 另一方面，打印由两个分区组成的增强渲染图像：使用空间频率等于中值加一些delta x的半色调打印要被感知为背景的分区，而另一个图像分区是 使用具有等于中值减去相同δx的空间频率的半色调打印。 空间频率差产生相应的移位放大系数M，其中放大倍数的透视倍数的总深度M是透明度的厚度。