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    • 18. 发明公开
    • Method for watermarking a three-dimensional object and method for obtaining a payload from a threedimensional object
    • 一种用于加水印的三维物体和方法,用于从三维对象获取的有效载荷的方法
    • EP2991028A1
    • 2016-03-02
    • EP14306339.4
    • 2014-08-29
    • Thomson LicensingINRIA - Institut National de Recherche en Informatique et en Automatique
    • Rolland-Neviere, XavierAlliez, PierreDoerr, Gwenael
    • G06T1/00
    • The invention relates to a method for watermarking a three-dimensional object. The watermarking method comprises computing an original signature of a local neighborhood of a current vertex among the plurality of vertices of the three-dimensional object; obtaining a target signature from the original signature and a watermark payload; and modifying said local neighborhood wherein a position of at least one vertex of said local neighborhood is modified such that a modified signature of said modified local neighborhood is close to said target signature and wherein at least a vertex of said modified local neighborhood is not modified.
      The invention further relates to a method for obtaining payload from a three-dimensional object wherein a signature of a local neighborhood of at least one vertex among a plurality of vertices is close to a target signature and wherein the target signature is obtained using an original signature corresponding to an original three-dimensional object and using a watermark payload.
      The invention further relates to a 3D object carrying a watermark and to devices for implementing the disclosed methods.
    • 本发明涉及用于加水印的三维物体的方法。 水印方法包括:计算所述三维物体的顶点的多元性中的当前顶点的局部邻域的原始签名; 获得从原来的签名和水印有效载荷的目标签名; 和修改所述局部邻域worin所述本地邻域的至少一个顶点的位置被修改的搜索没有说的改性签名修改的本地附近,靠近所述目标签名和worin至少所述的一个顶点修改的本地邻域不被修改。 本发明还涉及一种用于从三维物体worin至少一个顶点的顶点的多元性之间的局部邻域的签名获得有效载荷的方法是接近目标签名和worin目标签名使用原始签名的获得 对应于原始的三维物体和使用水印有效负载。 本发明还涉及到载有水印的3D对象和用于实现该盘的方法游离缺失设备。