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    System and method of watermarking a video signal and extracting the watermarking from a video signal
    2.
    发明授权
    System and method of watermarking a video signal and extracting the watermarking from a video signal 有权
    对视频信号进行加水印并从视频信号中提取水印的系统和方法

    公开(公告)号：US07415127B2

    公开(公告)日：2008-08-19

    申请号：US10697106

    申请日：2003-10-31

    申请人： Yann Bodo ,  Nathalie Laurent

    发明人： Yann Bodo ,  Nathalie Laurent

    IPC分类号： G06K9/00 ,  G06K9/36 ,  G06K9/46

    CPC分类号： G06T1/0085 ,  G06T2201/0053 ,  H04N19/467

    摘要： This method comprises the following steps of applying a watermarking function to motion vectors calculated by estimation of movement between images of a video signal, followed by a step of generating the watermarked video signal by compensating movement with the aid of the watermarked motion vectors. The watermarking function is applied by marking the coordinates of the selected motion vector in a reference space, certain portions of this space constituting a first zone and the other portions of this space constituting a second zone complementary to the first, assigning a binary value to each of the two zones, and, if necessary, modifying the coordinates of the selected motion vector so that it is in the zone whose binary value corresponds to a bit of a marking key associated with the selected motion vector.

    摘要翻译： 该方法包括以下步骤：将通过估计视频信号的图像之间的移动所计算出的运动矢量应用于水印函数，接着通过利用水印的运动矢量补偿移动来生成带水印的视频信号的步骤。 通过在参考空间中标记所选择的运动矢量的坐标来应用水印功能，该空间的某些部分构成第一区域，并且该空间的其他部分构成与第一区域互补的第二区域，将二进制值分配给每个 并且如果需要，修改所选择的运动矢量的坐标，使得它在其二进制值对应于与选择的运动矢量相关联的标记键的位的区域中。

    Method for the watermarking of a video sequence with adaptive selection of the watermark insertion zone, corresponding detection method, devices, data carrier and computer program
    3.
    发明授权
    Method for the watermarking of a video sequence with adaptive selection of the watermark insertion zone, corresponding detection method, devices, data carrier and computer program 有权
    用于水印插入区自适应选择的视频序列的水印方法，相应的检测方法，设备，数据载体和计算机程序

    公开(公告)号：US07386147B2

    公开(公告)日：2008-06-10

    申请号：US10811312

    申请日：2004-03-26

    申请人： Yann Bodo ,  Nathalie Laurent

    发明人： Yann Bodo ,  Nathalie Laurent

    IPC分类号： G06K9/00

    CPC分类号： G06T1/0085 ,  G06T2201/0051 ,  G06T2201/0053 ,  G06T2201/0061 ,  H04N19/467 ,  H04N19/513 ,  H04N19/61

    摘要： A method for the watermarking of a sequence of video images implements a step for the insertion of at least one watermarking bit into at least one motion vector obtained by motion estimation between two images of said sequence, so as to obtain at least one watermarked motion vector. The motion vector is identified by its coordinates in a reference space, partitioned into two types of complementary zones, each having a distinct binary value associated with it. The insertion step implements, if necessary, a modification of the coordinates of said motion vector so that it is located in a binary value zone corresponding to said watermarking bit to be inserted. During said modification, at least two potential watermarked motion vectors are determined and, from among said potential watermarked motion vectors, an optimal watermarked motion vector is selected according to at least one predetermined criterion, so that the modified coordinates of said motion vector are those of said optimal watermarked motion vector.

    摘要翻译： 一种用于水印视频图像序列的方法实现了将至少一个水印位插入到通过所述序列的两个图像之间的运动估计获得的至少一个运动矢量中的步骤，以便获得至少一个水印运动矢量 。 运动矢量由参考空间中的坐标识别，分为两种类型的互补区域，每个区域具有与之相关联的不同二进制值。 如果需要，插入步骤实现所述运动矢量的坐标的修改，使得它位于与要插入的所述水印位相对应的二进制值区域中。 在所述修改期间，确定至少两个可能带水印的运动矢量，并根据至少一个预定标准从所述潜在水印运动矢量中选出最佳加水印运动矢量，使得所述运动矢量的修改坐标为 表示最佳水印运动矢量。

    Media decoder and a decoding method allowing for the media decoder to be traced
    4.
    发明授权
    Media decoder and a decoding method allowing for the media decoder to be traced 有权
    媒体解码器和允许跟踪媒体解码器的解码方法

    公开(公告)号：US09392296B2

    公开(公告)日：2016-07-12

    申请号：US13363859

    申请日：2012-02-01

    申请人： Yann Bodo ,  Corinne Le Buhan

    发明人： Yann Bodo ,  Corinne Le Buhan

    IPC分类号： H04N7/26 ,  H04N19/467 ,  H04N19/176 ,  H04N19/122

    CPC分类号： H04N19/467 ,  H04N19/122 ,  H04N19/176

    摘要： The present invention aims to overcome drawbacks of conventional content tracing methods requiring re-processing the content before its broadcast with a significant side channel transmission i.e. extra processing, storage and/or bandwidth at the distribution side, or alternately a complex signal processing implementation at the receiver side that has to be protected against hackers attacks. An efficient system and method consists of tracing and uniquely identifying decoders of a video stream wherein the decoders implement at least one variant of a standard image decompression algorithm and wherein the resulting decompressed image approximation varies according to the decoders' identifier.

    摘要翻译： 本发明旨在克服传统内容跟踪方法的缺点，需要在具有重要的侧信道传输的广播之前重新处理内容，即在分发侧的额外处理，存储和/或带宽，或者替代地，复杂信号处理实现 接收方必须防范黑客攻击。 有效的系统和方法包括跟踪和唯一地识别视频流的解码器，其中解码器实现标准图像解压缩算法的至少一个变体，并且其中所得到的解压缩图像近似根据解码器的标识符而变化。