公开(公告)号：US20030231349A1

公开(公告)日：2003-12-18

申请号：US10159423

申请日：2002-05-30

Applicant: Xerox Corporation

Inventor： Shen-ge Wang ,  Beilei Xu ,  Chu-heng Liu

IPC: H04N001/405 ,  B42D015/00

CPC classification number: H04N1/4058 ,  H04N1/00883

Abstract: The present invention relates to the manipulation of differential gloss as may be inherent in halftoned images. By selectively applying halftones with anisotropic structure characteristics which are significantly different in orientation while remaining identical in density, a gloss image may be superimposed within an image without the need for special toners or paper. Conventional copier systems will not typically be able to copy such a superimposed gloss image.

Abstract translation: 本发明涉及在半色调图像中固有的差异光泽的操作。 通过选择性地施加各向异性结构特征的半色调，其在取向上显着不同，同时保持密度相同，可以在图像内叠加光泽图像，而不需要特殊的调色剂或纸张。 传统的复印机系统通常不能复制这种叠加的光泽图像。

公开(公告)号：US20040084894A1

公开(公告)日：2004-05-06

申请号：US10284551

申请日：2002-10-30

Applicant: Xerox Corporation

Inventor： Zhigang Fan ,  Shen-ge Wang

IPC: B42D015/00 ,  B42D015/10

CPC classification number: B42D25/30 ,  B41M3/14 ,  B42D2035/14 ,  B42D2035/16 ,  Y10S428/916 ,  Y10T428/1486

Abstract: Patterns are aligned on the front and back surfaces of a document to provide an anti-counterfeiting security device. The document is sufficiently transparent to allow see-through of the partial image on the back of the document to be superimposed on the partial image on the front of the document to form a complete image if the patterns are properly aligned. The complete image will disappear if misaligned.

Abstract translation: 图案在文档的正面和背面对准，以提供防伪安全装置。 文档足够透明，以允许文档背面的部分图像的透视叠加在文档正面的部分图像上，以便在图案正确对齐的情况下形成完整的图像。 如果未对齐，完整的图像将消失。

公开(公告)号：US20040001233A1

公开(公告)日：2004-01-01

申请号：US10184219

申请日：2002-06-27

Applicant: Xerox Corporation

Inventor： Shen-ge Wang ,  Beilei Xu ,  Chu-heng Liu

IPC: H04N001/405 ,  B42D015/00

CPC classification number: G03G8/00 ,  B41M3/14 ,  H04N2201/3211 ,  H04N2201/3214 ,  H04N2201/3215 ,  H04N2201/3226 ,  H04N2201/3271

Abstract: The present invention relates to protecting printed items intended for public exchange having important informational indicia provided therein. The print items are protected from tampering by providing an informational indicia image as a glossmark. By selectively applying halftones with anisotropic structure characteristics which are significantly different in orientation while remaining identical in density to render information indicia, a glossmark image is produced of the information indicia. Such an information indicia glossmark image when provided in print item image helps protect that print item image from tampering.

Abstract translation: 本发明涉及保护用于公共交换的印刷品，其中提供了重要的信息标记。 通过提供信息标记图像作为光标，保护打印物品免受篡改。 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，同时保持密度相同以呈现信息标记，产生了信息标记的光泽标记图像。 当在打印项目图像中提供时，这样的信息标记光泽标记图像有助于保护该打印项目图像免受篡改。

公开(公告)号：US20040264781A1

公开(公告)日：2004-12-30

申请号：US10604200

申请日：2003-06-30

Applicant: XEROX CORPORATION

Inventor： Reiner Eschbach ,  Gaurav Sharma ,  Shen-ge Wang

IPC: G06T007/00 ,  G06K009/46 ,  G06K009/56 ,  G06K009/62

CPC classification number: H04N1/00076 ,  G06T7/44 ,  G06T2207/10008 ,  G06T2207/20021 ,  H04N1/00002 ,  H04N1/00005 ,  H04N1/00037 ,  H04N1/00039

Abstract: Methods and systems used to automatically identify the marking process used for an image on a substrate based on spatial characteristics and/or color of the image. Image types which are classified and identified include continuous tone images and halftone images. Among halftone images separately identified are inkjet images, xerographic images and lithographic images. Locally adaptive image threshold techniques may be used to determine the spatial characteristics of the image.

Abstract translation: 用于基于图像的空间特征和/或颜色来自动识别用于基底上的图像的标记过程的方法和系统。 分类和识别的图像类型包括连续色调图像和半色调图像。 在分开标识的半色调图像中，是喷墨图像，静电复印图像和平版印刷图像。 本地适应性图像阈值技术可用于确定图像的空间特征。

公开(公告)号：US20040084893A1

公开(公告)日：2004-05-06

申请号：US10284545

申请日：2002-10-30

Applicant: Xerox Corporation

Inventor： Zhigang Fan ,  Shen-ge Wang

IPC: B42D015/00 ,  B42D015/10

CPC classification number: B42D25/342 ,  Y10S428/916 ,  Y10S428/917

Abstract: Frequency varying patterns are aligned on the front and back surfaces of a document to provide an anti-counterfeiting security device. The frequency varying patterns are reversed images. The document is sufficiently transparent to allow see-through of the pattern on the back of the document to be superimposed on the pattern on the front of the document. The frequency varying patterns will form a moire pattern if misaligned, regardless of the magnitude and the orientation of the misalignment.

Abstract translation: 频率变化的图案在文档的正面和背面对准，以提供防伪安全装置。 频率变化模式是反转图像。 该文档足够透明，以允许将文档背面的图案透视为叠加在文档正面的图案上。 如果不对准，频率变化模式将形成莫尔条纹图案，而不考虑不对齐的大小和方向。

公开(公告)号：US20020102007A1

公开(公告)日：2002-08-01

申请号：US09773004

申请日：2001-01-31

Applicant: Xerox Corporation

Inventor： Shen-ge Wang

IPC: G06K009/00 ,  B41B001/00 ,  B41J001/00 ,  G06K001/00 ,  G06F015/00

CPC classification number: H04N1/32309 ,  G06T1/0021 ,  H04N1/32256

Abstract: 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.

Abstract translation: 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。