公开(公告)号：US20080297853A1

公开(公告)日：2008-12-04

申请号：US12095860

申请日：2006-04-29

Applicant: Bin Yang ,  Wenzhe Shi ,  Wenfa Qi ,  Shengyuan Cheng ,  Lidong Wang

Inventor： Bin Yang ,  Wenzhe Shi ,  Wenfa Qi ,  Shengyuan Cheng ,  Lidong Wang

IPC: G06K15/00

CPC classification number: H04N1/32203 ,  H04N1/32219 ,  H04N1/32352 ,  H04N2201/3205 ,  H04N2201/3208 ,  H04N2201/3214 ,  H04N2201/3221 ,  H04N2201/3266 ,  H04N2201/3281 ,  H04N2201/3284

Abstract: Disclosed are a method and apparatus for embedding or detecting watermarks in a text, which belong to the field of document protection. The method and apparatus overlay an additional layer of shade in a document for recording a large amount of information from watermarks. The shade comprises the dots arranged under certain rules. Shifts of the dots record each bit string within the watermark. According to the method and apparatus, a large amount of information can be embedded and the watermarks embedded in the shade are dispersed together with the document which can be digitized by a scanner for being detected.

Abstract translation: 公开了一种在文本中嵌入或检测水印的方法和装置，它们属于文档保护领域。 该方法和装置在文档中覆盖附加层的阴影以从水印记录大量信息。 阴影包括在某些规则下排列的点。 点的移位记录水印内的每个位串。 根据该方法和装置，可以嵌入大量的信息，并且将嵌入在阴影中的水印与可由扫描器数字化的文档分散在一起以便被检测。

公开(公告)号：US08107129B2

公开(公告)日：2012-01-31

申请号：US12095860

申请日：2006-04-29

Applicant: Bin Yang ,  Wenzhe Shi ,  Wenfa Qi ,  Shengyuan Cheng ,  Lidong Wang

Inventor： Bin Yang ,  Wenzhe Shi ,  Wenfa Qi ,  Shengyuan Cheng ,  Lidong Wang

IPC: H04N1/405

CPC classification number: H04N1/32203 ,  H04N1/32219 ,  H04N1/32352 ,  H04N2201/3205 ,  H04N2201/3208 ,  H04N2201/3214 ,  H04N2201/3221 ,  H04N2201/3266 ,  H04N2201/3281 ,  H04N2201/3284

Abstract: Disclosed are a method and apparatus for embedding or detecting watermarks in a text, which belong to the field of document protection. The method and apparatus overlay an additional layer of shade in a document for recording a large amount of information from watermarks. The shade comprises the dots arranged under certain rules. Shifts of the dots record each bit string within the watermark. According to the method and apparatus, a large amount of information can be embedded and the watermarks embedded in the shade are dispersed together with the document which can be digitized by a scanner for being detected.

Abstract translation: 公开了一种在文本中嵌入或检测水印的方法和装置，它们属于文档保护领域。 该方法和装置在文档中覆盖附加层的阴影以从水印记录大量信息。 阴影包括在某些规则下排列的点。 点的移位记录水印内的每个位串。 根据该方法和装置，可以嵌入大量的信息，并且将嵌入在阴影中的水印与可由扫描器数字化的文档分散在一起以便被检测。