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    Method of watermarking a video signal, a system and a data medium for implementing said method, a method of extracting the watermarking from a video signal, and system for implementing said method
    1.
    发明申请
    Method of watermarking a video signal, a system and a data medium for implementing said method, a method of extracting the watermarking from a video signal, and system for implementing said method 有权
    对视频信号进行水印处理的方法，用于实现所述方法的系统和数据媒体，从视频信号中提取水印的方法以及用于实现所述方法的系统

    公开(公告)号：US20040175017A1

    公开(公告)日：2004-09-09

    申请号：US10697106

    申请日：2003-10-31

    Applicant: FRANCE TELECOM

    Inventor： Yann Bodo ,  Nathalie Laurent

    IPC: G06K009/00 ,  G06K009/36

    CPC classification number: G06T1/0085 ,  G06T2201/0053 ,  H04N19/467

    Abstract: The method comprises the following steps: applying a watermarking function to motion vectors calculated by estimation of movement between images of a video signal; and 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 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 where 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.

    Abstract translation: 该方法包括以下步骤：将水印功能应用于通过估计视频信号的图像之间的移动而计算的运动矢量; 以及通过借助于水印运动矢量补偿移动来产生加水印的视频信号。 通过以下步骤来应用水印功能：标记所选运动矢量在空间中的坐标，该空间的某些部分构成第一区域，并且该空间的其它部分构成与第一区域互补的第二区域; 为二个区域中的每一个分配一个二进制值; 并且在必要时，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.
    发明申请
    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：US20040247154A1

    公开(公告)日：2004-12-09

    申请号：US10811312

    申请日：2004-03-26

    Applicant: France Telecom

    Inventor： Yann Bodo ,  Nathalie Laurent

    IPC: G06K009/00 ,  G06K009/36

    CPC classification number: G06T1/0085 ,  G06T2201/0051 ,  G06T2201/0053 ,  G06T2201/0061 ,  H04N19/467 ,  H04N19/513 ,  H04N19/61

    Abstract: 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.

    Abstract translation: 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。

    Methods of scrambling and unscrambling a video signal, a system, an encoder, a decoder, a broadcast server, and a data medium for implementing the methods
    4.
    发明申请
    Methods of scrambling and unscrambling a video signal, a system, an encoder, a decoder, a broadcast server, and a data medium for implementing the methods 失效
    对视频信号进行加扰和解扰的方法，系统，编码器，解码器，广播服务器和用于实现方法的数据介质

    公开(公告)号：US20040037422A1

    公开(公告)日：2004-02-26

    申请号：US10437177

    申请日：2003-05-14

    Applicant: France Telecom

    Inventor： Yann Bodo ,  Nathalie Laurent ,  Christophe Laurent

    IPC: H04N007/167

    CPC classification number: G06T1/0085 ,  G06T2201/0052 ,  H04N7/1675 ,  H04N19/48 ,  H04N19/61 ,  H04N21/23476 ,  H04N21/44055 ,  H04N21/8358

    Abstract: The invention relates in particular to a method of scrambling a video signal using an encryption key for controlling access to audiovisual information. The video signal is scrambled by applying a tattooing function to the video signal by using a marking key derived from the encryption key, the tattooing function including a parameter for regulating the amplitude of tattooing so as to enable the visibility of the tattooing in the video signal to be adjusted. The invention also provides a dual unscrambling method, and a system, an encoder, a decoder, a broadcast server, and a data medium for implementing said methods.

    Abstract translation: 本发明具体涉及一种利用加密密钥加扰视频信号以控制对视听信息的访问的方法。 通过使用从加密密钥导出的标记密钥将纹身功能应用于视频信号来加扰视频信号，纹身功能包括用于调节纹身幅度的参数，以便使视频信号中的纹身可见度 要调整 本发明还提供了一种双重解扰方法，以及用于实现所述方法的系统，编码器，解码器，广播服务器和数据介质。

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