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1. 发明授权

US6128736A Method for inserting a watermark signal into data 有权
标题翻译：将水印信号插入数据的方法
公开(公告)号：US6128736A
公开(公告)日：2000-10-03
申请号：US215958
申请日：1998-12-18
申请人： Matthew L. Miller
发明人： Matthew L. Miller
IPC分类号： G06T1/00 , G09C1/06 , G09C5/00 , H04N1/387 , H04N7/08 , H04N7/081 , H04L9/00 , G09C3/00
CPC分类号： G06T1/0028
摘要： A method for inserting a watermark signal into data to be watermarked. The method includes the steps of: applying a partial watermark extraction to unwatermarked data for generating a first set of intermediate extracted values; identifying a first set of target values that are to replace the intermediate extracted values; computing the difference between the first set of target values and the first set of intermediate extracted values; and adding the computed difference throughout the unwatermarked data. In a preferred embodiment of the method of the present invention, the step of identifying a first set of target values that are to replace the intermediate extracted values further includes the substeps of: applying a transform to the first set of intermediate extracted values; applying a further partial watermark extraction to the transformed first set of intermediate extracted values to obtain a second set of intermediate extracted values; identifying a second set of target values that are to replace the second set of intermediate extracted values; computing the difference between the second set of target values and the second set of intermediate extracted values; adding the computed difference throughout the transformed first set of intermediate extracted values to obtain a transformed first set of target values; and applying an inverse transform to the first set of transformed target values to obtain the first set of target values.
摘要翻译：一种用于将水印信号插入要被加水印的数据的方法。该方法包括以下步骤：对未加水印的数据应用部分水印提取以产生第一组中间提取值; 识别要替换中间提取值的第一组目标值; 计算第一组目标值与第一组中间提取值之间的差; 并将所计算出的差异添加到整个未水印的数据中。在本发明方法的优选实施例中，识别要替换中间提取值的第一组目标值的步骤还包括以下子步骤：将变换应用于第一组中间提取值; 对所转换的第一组中间提取值应用进一步的部分水印提取以获得第二组中间提取值; 识别将替换第二组中间提取值的第二组目标值; 计算第二组目标值与第二组中间提取值之间的差; 将所计算出的差值加到经变换的第一组中间提取值，以获得经变换的第一组目标值; 以及将逆变换应用于所述第一组变换的目标值以获得所述第一组目标值。

2. 发明申请

US20020029338A1 Method for data preparation and watermark insertion 失效
标题翻译：数据准备和水印插入方法
公开(公告)号：US20020029338A1
公开(公告)日：2002-03-07
申请号：US09924616
申请日：2001-08-08
申请人： SIGNAFY, INC.
发明人： Jeffrey A. Bloom , Ingemar J. Cox , Matthew L. Miller
IPC分类号： H04L009/00
CPC分类号： H04N19/467 , G06T1/0028 , G06T1/0071 , G06T2201/0064 , H04N1/32149 , H04N1/32154 , H04N1/32203 , H04N1/32267 , H04N1/32304
摘要： A method for data preparation and watermark insertion. The method includes the step of preparing the data at a first time by manipulating at least one set of the data characteristics for subsequent insertion of a first watermark. In a preferred embodiment of the method of the present invention the method further includes the step of inserting the first watermark by manipulating the set of data characteristics at a second time subsequent to the first time. In still yet another preferred embodiment of the method of the present invention, the method further includes the step of inserting a second watermark at a third time, before, during, or after the first time, by manipulating at least one set of the data characteristics. In a variation of the present invention a method for inserting a watermark into compressed data is provided. The compressed data has sets of data characteristics. The method includes the steps of inserting a watermark by manipulating the set of data characteristics; and optimizing the manipulated data by modifying the compressed data characteristics subject to a set of constraints.
摘要翻译：一种数据准备和水印插入方法。该方法包括通过操纵至少一组数据特征以便随后插入第一水印而在第一时间准备数据的步骤。在本发明方法的优选实施例中，该方法还包括通过在第一次之后的第二时间操纵数据特征集合来插入第一水印的步骤。在本发明方法的另一优选实施例中，该方法还包括在第一时间之前，之前或之后通过操纵至少一组数据特征来插入第二水印的步骤。在本发明的变形例中，提供了一种将水印插入压缩数据的方法。压缩数据具有数据特征集。该方法包括以下步骤：通过操纵该组数据特征来插入水印; 以及通过修改经受一组约束的压缩数据特征来优化所操纵的数据。

3. 发明授权

US6108434A Counteracting geometric distortions for DCT based watermarking 失效
标题翻译：基于DCT的水印的反应几何失真
公开(公告)号：US6108434A
公开(公告)日：2000-08-22
申请号：US928576
申请日：1997-09-12
申请人： Ingemar J. Cox , Matthew L. Miller
发明人： Ingemar J. Cox , Matthew L. Miller
IPC分类号： H04N7/30 , G06T1/00 , G09C5/00 , H04N1/32 , H04N1/387 , H04N7/08 , H04N7/081 , H04N7/26 , G06K9/00
CPC分类号： H04N21/8358 , G06T1/0064 , H04N1/32154 , H04N1/32165 , H04N1/32277 , H04N19/467 , H04N21/23892 , G06T2201/0052 , G06T2201/0061
摘要： Detection of a watermark in blocks of video or image data which has been subjected to affine geometric distortion is accomplished by approximating the distortion by a spatially varying translation of the blocks. The watermark is extracted by spatial translations of the blocks based on an assumed affine geometric distortion. The extracted watermarks are correlated with possible watermarks and the maximum correlator output is tested for statistical significance in order to determine whether a watermark is present in the image or video frame. The data may be compressed or uncompressed data. If the affine geometric distortion is known, a search for the maximum correlator output over a space of possible distortions can be performed.
摘要翻译：已经经过仿射几何失真的视频或图像数据的块中的水印的检测是通过块的空间变化的平移逼近失真来实现的。基于假设的仿射几何失真，通过块的空间转换来提取水印。所提取的水印与可能的水印相关联，并且测量最大相关器输出的统计显着性，以便确定水印是否存在于图像或视频帧中。数据可以是压缩数据或未压缩数据。如果仿射几何失真是已知的，则可以执行在可能失真空间上的最大相关器输出的搜索。

4. 发明授权

US5991426A Field-based watermark insertion and detection 有权
标题翻译：基于场的水印插入和检测
公开(公告)号：US5991426A
公开(公告)日：1999-11-23
申请号：US216499
申请日：1998-12-18
申请人： Ingemar J. Cox , Matthew L. Miller
发明人： Ingemar J. Cox , Matthew L. Miller
IPC分类号： G06T1/00 , H04N1/387 , H04N7/08 , H04N7/081 , G06K9/00
CPC分类号： G06T1/0085 , H04N1/32304
摘要： A digital watermark is inserted into multimedia data containing two image fields by placing a positive watermark into a first field and a negative watermark into a second field. The positive watermark and negative watermark are opposite of one another. The two fields can be interlaced fields of a field-based video signal or alternate rows of a frame-based video signal. The watermark is extracted from field-based watermarked data by separating the watermarked data into two fields and subtracting one of the fields from the other field to generate a watermarked signal. The resultant watermarked signal is processed in a conventional manner to extract and detect the watermark.
摘要翻译：将数字水印插入到包含两个图像场的多媒体数据中，通过将第一场和负水印放置到第二场中。正水印和负水印是相反的。两个场可以是基于场的视频信号的交错场或基于帧的视频信号的交替行。通过将加水印的数据分离成两个字段并从另一个字段中减去一个字段来生成水印信号，从基于水印的水印数据中提取水印。以常规方式处理所产生的水印信号以提取和检测水印。

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