公开(公告)号：US20090123020A1

公开(公告)日：2009-05-14

申请号：US11663796

申请日：2005-10-07

申请人： Severine BAUDRY ,  Philippe NGUYEN

发明人： Severine BAUDRY ,  Philippe NGUYEN

IPC分类号： G06K9/00

CPC分类号： G06T1/005 ,  G06T2201/0065

摘要： The invention relates to a method of reading a watermark, of the type comprising a step of determining at least one watermarking message contained in a data set, possibly preceded by a step of determining at least one suite of parameters of a watermarking channel undergone by the data set, each suite of channel parameters comprising at least one channel parameter. The step of determining at least one watermarking message and/or the prior step of determining at least one suite of channel parameters comprises (comprise): an estimation phase, consisting in processing at least one batch of data comprising data of the data set, so as to obtain N estimated element(s), with N≧0; and a verification phase, consisting in validating or invalidating, in view of the entirety or of at least a subset of the data set, each estimated element. In the foregoing, each estimated element is an estimated watermarking message, in the case of the step of determining at least one watermarking message, and a suite of estimated-channel parameters, in the case of the prior step of determining at least one suite of channel parameters.

摘要翻译： 本发明涉及一种读取水印的方法，该方法包括以下步骤：确定包含在数据集中的至少一个水印消息的步骤，可能之前是确定水印信道所经历的水印信道的至少一组参数的步骤 数据集，每组通道参数包括至少一个通道参数。 确定至少一个水印消息和/或确定至少一组信道参数的先前步骤的步骤包括（包括）：估计阶段，包括处理包括数据集的数据的至少一批数据，因此 获得N个估计元素，其中N> = 0; 以及验证阶段，其包括鉴于全部或至少一个数据集的子集，验证或无效，每个估计的元素。 在上文中，每个估计元素是估计水印消息，在确定至少一个水印消息的步骤的情况下，以及一组估计信道参数，在先前步骤的情况下，确定至少一个 通道参数。