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51. 发明申请

US20070177759A1 System and method to automatically establish preferred area for image-wise watermark 有权
标题翻译：自动建立图像水印的优选区域的系统和方法
公开(公告)号：US20070177759A1
公开(公告)日：2007-08-02
申请号：US11343668
申请日：2006-01-31
申请人： Reiner Eschbach , Shen-ge Wang , Zhigang Fan
发明人： Reiner Eschbach , Shen-ge Wang , Zhigang Fan
IPC分类号： G06K9/00
CPC分类号： H04N1/32331 , G06T1/0028 , G06T7/73 , G06T2201/0051 , G06T2201/0061 , H04N1/32187 , H04N1/32325
摘要： A system and method are disclosed for determining preferred image locations for placing watermark information (both hidden and obvious). The disclosure includes at least three criteria (image similarity, contrast, and image value range) that may be used alone or in combination to determine a preferred area of the target image for placing the watermark depending upon the user's intent for the mark (hiding or showing watermark).
摘要翻译：公开了用于确定用于放置水印信息（隐藏和明显）的优选图像位置的系统和方法。本公开包括至少三个标准（图像相似性，对比度和图像值范围），其可以单独使用或组合使用，以根据用户对标记的意图来确定用于放置水印的目标图像的优选区域（隐藏或显示水印）。

52. 发明申请

US20070158434A1 Counterfeit prevention using miniature security marks 有权
标题翻译：防伪使用微型安全标志
公开(公告)号：US20070158434A1
公开(公告)日：2007-07-12
申请号：US11317768
申请日：2005-12-23
申请人： Zhigang Fan
发明人： Zhigang Fan
IPC分类号： G06K19/00
CPC分类号： B42D15/00 , B41M3/14 , H04N1/32144 , H04N2201/3271
摘要： A system applies a security mark to a recipient. A data reception component receives information from one or more sources. A security mark generation component generates at least one miniature security mark (MSM) configuration based at least in part upon the information from the data reception component. An application component applies the at least one MSM configuration to one or more recipients.
摘要翻译：系统对收件人应用安全标记。数据接收组件从一个或多个源接收信息。安全标记生成部件至少部分地基于来自数据接收部件的信息生成至少一个微型安全标记（MSM）配置。应用程序组件将至少一个MSM配置应用于一个或多个接收者。

53. 发明授权

US07197161B2 Embedding information in images using two-layer conjugate screening 失效
标题翻译：使用双层共轭筛选在图像中嵌入信息
公开(公告)号：US07197161B2
公开(公告)日：2007-03-27
申请号：US10600139
申请日：2003-06-20
申请人： Zhigang Fan
发明人： Zhigang Fan
IPC分类号： G06K9/00
CPC分类号： G06T1/0021 , G06T2201/0051
摘要： A new information embedding technology is disclosed using conjugate screen concept. More specifically, two screens are applied in a halftoning process, one for the areas that corresponds to the symbol to be embedded (object), and one for the background. Both screens can be conceptually decomposed into a two-layer structure similar to supercells. The top layer determines the overall halftone texture, while the bottom layer, which is conjugate for background and object, carries embedded data. The information can be retrieved digitally or optically. In embedding, there is no restriction of the symbol sizes. The computation is relatively simple and can be implemented in real time. In retrieval, it is relatively robust to registration errors.
摘要翻译：使用共轭屏幕概念公开了一种新的信息嵌入技术。更具体地说，在半色调处理中应用两个屏幕，一个用于与要嵌入的符号对应的区域（对象），一个用于背景。两个屏幕可以在概念上分解成类似于超级单元的两层结构。顶层确定整体半色调纹理，而底层（用于背景和对象）是共轭的，它携带嵌入数据。信息可以数字或光学检索。在嵌入中，没有限制符号大小。计算相对简单，可以实时实现。在检索中，注册错误相对较强。

54. 发明申请

US20070041628A1 Detection of document security marks using run profiles 审中-公开
标题翻译：使用运行配置文件检测文档安全标记
公开(公告)号：US20070041628A1
公开(公告)日：2007-02-22
申请号：US11205830
申请日：2005-08-17
申请人： Zhigang Fan
发明人： Zhigang Fan
IPC分类号： G06K9/00
CPC分类号： G06K9/2054 , H04N1/00846 , H04N1/00848 , H04N1/00867 , H04N2201/0091
摘要： A method and apparatus for preventing or inhibiting effective reproduction of documents such as currency, checks, stock certificates, and any other printed document including a pre-defined security mark printed therein. The method and apparatus operate to effect a multi-step review of all digital image data acquired from a printed document to be reproduced for purposes of locating any potential security marks and further examining same for purposes of positively identifying a potential security mark as an actual security mark. If a mark is located and verified to be an authentic security mark, effective reproduction of the printed document will not be permitted and/or other security measures will be taken. Processing speed is improved by using run profile analysis to limit the image features that are subjected to computationally intensive template matching operations. Run profiles are tracked using a finite automaton.
摘要翻译：一种用于防止或禁止有效再现诸如货币，支票，股票证书以及其中印有预定义的安全标记的任何其他印刷文件的方法和装置。该方法和装置用于对从要印刷的文件获取的所有数字图像数据进行多步检查，以便定位任何潜在的安全标记，并进一步检查相同的目的，以便将潜在的安全标记确定为实际的安全性标记。如果商标位于并被证实为真实的安全标志，则不允许有效复印打印文件和/或采取其他安全措施。通过使用运行轮廓分析来限制经受计算密集型模板匹配操作的图像特征，提高了处理速度。运行配置文件使用有限自动机进行跟踪。

55. 发明授权

US07136189B2 Color halftoning using a multi-level successive-filling halftone screening algorithm 失效
标题翻译：使用多级连续填充半色调筛选算法进行彩色半色调
公开(公告)号：US07136189B2
公开(公告)日：2006-11-14
申请号：US10040546
申请日：2002-01-07
申请人： Gaurav Sharma , Helen H. Shin , Shen-Ge Wang , Zhigang Fan
发明人： Gaurav Sharma , Helen H. Shin , Shen-Ge Wang , Zhigang Fan
IPC分类号： G06F15/00
CPC分类号： H04N1/52
摘要： A method is provided for rendering a color image with a plurality of separations with a multi-level successive-filling halftoning process using a single screen for a plurality of separations. For a separation to be processed, first, from the possible multiple levels for the separation, the set of levels that would be used and the number of dots corresponding to the different levels are decided. These decisions are based on the input level for the separation and input levels for the prior process separations. The location of the dots to be printed for the different levels for the separation is then decided by using the halftone screen, while simultaneously taking into account the placement of printed dots for the prior separations. The selection is done so as to best disperse dots and minimize overlap.
摘要翻译：提供了一种使用单个屏幕进行多次分色的多级连续填充半色调处理来渲染具有多个分色的彩色图像的方法。对于待处理的分离，首先，从分离的可能的多个级别中，决定将使用的级别集合和对应于不同级别的点数。这些决定基于先前过程分离的分离和输入水平的输入水平。然后通过使用半色调屏幕来确定要分离的不同级别要打印的点的位置，同时考虑用于先前分离的打印点的位置。进行选择以便最佳地分散点并最小化重叠。

56. 发明授权

US07002704B1 Method and apparatus for implementing anti-counterfeiting measures in personal computer-based digital color printers 失效
标题翻译：在个人计算机数字彩色打印机中实施防伪措施的方法和装置
公开(公告)号：US07002704B1
公开(公告)日：2006-02-21
申请号：US09707409
申请日：2000-11-06
申请人： Zhigang Fan
发明人： Zhigang Fan
IPC分类号： G06F15/00
CPC分类号： G06F21/608 , G06F3/1211 , G06F3/122 , G06F3/1222 , G06F3/1244 , G06F3/1267 , G06F3/1284
摘要： A system for rendering an electronic image representation associated with a software application program is disclosed. The system includes a PC-based host processor programmed to execute the software application program, a temporary storage device associated with the host processor, and a printer interfaced to the host processor. A printer driver routine is operative on the host processor and determines whether the electronic image representation is of a counterfeit document by examining at least a portion of the electronic image representation when stored in the temporary storage device during the course of printing the electronic image representation at the printer.
摘要翻译：公开了一种用于呈现与软件应用程序相关联的电子图像表示的系统。该系统包括被编程为执行软件应用程序的PC主机处理器，与主处理器相关联的临时存储设备以及与主机处理器接口的打印机。打印机驱动程序在主处理器上操作，并且通过在将电子图像表示的打印过程中存储在临时存储设备中时检查电子图像表示的至少一部分来确定电子图像表示是否是伪造文档打印机。

57. 发明授权

US06985628B2 Image type classification using edge features 失效
标题翻译：使用边缘特征的图像类型分类
公开(公告)号：US06985628B2
公开(公告)日：2006-01-10
申请号：US10040693
申请日：2002-01-07
申请人： Zhigang Fan
发明人： Zhigang Fan
IPC分类号： G06K9/00
CPC分类号： G06K9/00456 , H04N1/40062
摘要： A method and system for classifying images between natural pictures and synthetic graphics is provided. In embodiments of the invention, a picture/graphic classification method and system implements edge features for image classification of natural pictures and synthetic graphics. In another embodiment of the invention, a picture/graphic combination classification method and system using edge features, color discreteness features, and SGLD texture features is used to classify images between natural picture and synthetic graphic classes.
摘要翻译：提供了一种在自然图片和合成图形之间分类图像的方法和系统。在本发明的实施例中，图片/图形分类方法和系统实现用于自然图片和合成图形的图像分类的边缘特征。在本发明的另一个实施例中，使用图像/图形组合分类方法和使用边缘特征，颜色离散特征和SGLD纹理特征的系统对自然图像和合成图形类之间的图像进行分类。

58. 发明授权

US06973213B2 Background-based image segmentation 有权
标题翻译：基于背景的图像分割
公开(公告)号：US06973213B2
公开(公告)日：2005-12-06
申请号：US09977186
申请日：2001-10-12
申请人： Zhigang Fan , Hui Cheng
发明人： Zhigang Fan , Hui Cheng
IPC分类号： G06T11/60 , G06T5/00 , G06T7/40 , H04N1/387 , G06K9/34
CPC分类号： G06K9/00463 , G06K9/00456 , G06T7/11 , G06T7/155 , G06T7/187 , G06T2207/10008 , G06T2207/20156 , G06T2207/30176
摘要： A method for segmenting an image using a background-based segmentation process is provided. A document image (102) is low-pass filtered and decimated. The decimated image is processed at low resolution by a low-resolution segmentation (104) stage. Segmentation results include identification of a main background and one or more objects. Objects that cannot be classified in text or picture classes are further segmented into a local background and smaller objects. This process is reiterated until all objects are classified in text or picture classes. The results are overlaid on the image (102) during an original-resolution refinement (106) stage to refine the segmentation.
摘要翻译：提供了一种使用基于背景的分割过程来分割图像的方法。文档图像（102）被低通滤波和抽取。抽取的图像通过低分辨率分割（104）阶段以低分辨率处理。分割结果包括识别主背景和一个或多个对象。不能分类为文本或图片类的对象进一步分割为本地背景和较小对象。重复此过程，直到所有对象分类为文本或图片类。在原始分辨率细化（106）阶段期间，将结果覆盖在图像（102）上，以细化分割。

59. 发明授权

US06958828B2 Method and apparatus for detecting photocopier tracking signatures 失效
标题翻译：用于检测复印机跟踪签名的方法和装置
公开(公告)号：US06958828B2
公开(公告)日：2005-10-25
申请号：US10280311
申请日：2002-10-24
申请人： Keith T. Knox , Zhigang Fan , Eric J. Schneider
发明人： Keith T. Knox , Zhigang Fan , Eric J. Schneider
IPC分类号： B42D15/10 , G03F3/08 , G03G21/04 , G07D7/00 , G07D7/20 , H04N1/32 , H04N1/387 , H04N1/46 , G06F15/00 , G06F9/00
CPC分类号： G07D7/20 , G07D7/004 , H04N1/32208 , H04N1/32251 , H04N1/32309 , H04N1/32352 , H04N2201/3205 , H04N2201/3271 , H04N2201/3273
摘要： A method and apparatus are described for detecting photocopier tracking signatures placed on documents produced by color photocopiers. The apparatus includes an input terminal that supplies digital image data representing an input document produced by a color photocopier. The digital image data includes a plurality of pixel values grouped together to form a plurality of color separations that represent the input document. The apparatus also includes an image processing unit that generates an output image based on the digital image data. The image processing unit generates the output image based on differences between corresponding pixel values of at least two of the plurality of color separations. The apparatus further includes an ouput terminal for displaying the output image to view the photocopier tracking signature. Color differences can be detected by combining two or more of the color separations into a resulting monochromatic image and then enhancing the resulting color differences. The combination of the separations exposes small color differences that are not detectable in any of the individual separations, thus enabling the photocopier signature to be detected.
摘要翻译：描述了一种用于检测放置在由彩色复印机产生的文档上的复印机跟踪签名的方法和装置。该装置包括：输入端，其提供表示由彩色复印机产生的输入文档的数字图像数据。数字图像数据包括分组在一起以形成表示输入文档的多个分色的多个像素值。该装置还包括基于数字图像数据生成输出图像的图像处理单元。图像处理单元基于多个分色中的至少两个的相应像素值之间的差异来生成输出图像。该装置还包括用于显示输出图像以观看复印机跟踪签名的输出端子。可以通过将两个或更多个分色合并成所得到的单色图像，然后增强所得到的颜色差异来检测色差。分离的组合暴露出在任何单独分离中不可检测到的小的色差，从而能够检测复印机签名。

60. 发明授权

US06870640B1 Method and apparatus for rendering a continuous tone image representation with multiple digital halftoning 失效
标题翻译：用于呈现具有多次数字半色调的连续色调图像表示的方法和装置
公开(公告)号：US06870640B1
公开(公告)日：2005-03-22
申请号：US09713940
申请日：2000-11-16
申请人： Zhigang Fan , Shen-Ge Wang
发明人： Zhigang Fan , Shen-Ge Wang
IPC分类号： G06K15/02 , H04N1/405 , G06K15/00 , G06K9/36
CPC分类号： H04N1/4052 , G06K15/02
摘要： A system for rendering an image representation is disclosed. The system includes a halftone processor; a printer interfaced to the halftone processor; and a software routine operative on the halftone processor for a) classifying an input pixel value in either a first classification or a second classification, b) determining an output pixel value by error diffusing the input pixel value when the input pixel value is classified in the first classification, c) determining a temporary output pixel value by stochastic screening the input pixel value when the input pixel value is classified in the second classification, d) determining an adjusted input pixel value based on the input pixel value, the temporary output pixel value and a weighting value, e) determining the output pixel value by error diffusing the adjusted input pixel value, and f) rendering the output pixel value in the printer.
摘要翻译：公开了一种渲染图像表示的系统。该系统包括一个半色调处理器; 连接到半色调处理器的打印机; 以及在所述半色调处理器上操作的软件例程，用于a）对第一分类或第二分类中的输入像素值进行分类，b）当所述输入像素值分类为所述输入像素值时，通过误差扩散所述输入像素值来确定输出像素值第一分类，c）当输入像素值分类为第二分类时，通过随机筛选输入像素值来确定临时输出像素值，d）基于输入像素值确定经调整的输入像素值，临时输出像素值和加权值，e）通过误差扩散调整的输入像素值来确定输出像素值，以及f）在打印机中呈现输出像素值。

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