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    • 5. 发明申请
    • GRID-BASED WATERMARK
    • 基于网格的水印
    • WO2016099441A1
    • 2016-06-23
    • PCT/US2014/070328
    • 2014-12-15
    • HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.
    • ASTHANA, PrashantBHATIA, RajeshNUNNA, Bharani
    • H04N21/8358
    • G06T1/0071G06T2201/0051G06T2201/0061H04N21/8358
    • An example implementation includes an apparatus including a processor to divide a digital image into a grid including a first grid region and a second grid region. The processor is also to generate a first grid-based watermark using shared watermark information and a first set of grid coordinates associated with the first grid region. The processor is further to generate a second grid-based watermark using the shared watermark information and a second set of grid coordinates associated with the second grid region. The processor is further to embed the first grid-based watermark into a first region of the digital image corresponding to the first grid region and to embed the second grid-based watermark into a second region of the digital image corresponding to the second grid region. The processor is further to generate a machine-readable digital image including the embedded first grid-based watermark and the embedded second grid-based watermark.
    • 示例性实现包括一种包括处理器的设备,该处理器将数字图像分割成包括第一格栅区域和第二格栅区域的网格。 处理器还用于使用共享水印信息和与第一网格区域相关联的第一组网格坐标来生成第一基于网格的水印。 处理器进一步使用共享水印信息和与第二网格区域相关联的第二组网格坐标生成第二基于网格的水印。 处理器还将第一基于网格的水印嵌入到与第一网格区域对应的数字图像的第一区域中,并将第二基于网格的水印嵌入到与第二网格区域对应的数字图像的第二区域中。 处理器进一步产生包括嵌入的第一基于网格的水印和嵌入的第二基于网格的水印的机器可读数字图像。