Quickly tracing detection for spread spectrum watermark based on effect estimation of the affine transform
作者： Guo-Rui Feng , Ling-Ge Jiang , Dong-Jian Wang , Chen He
DOI: 10.1016/J.PATCOG.2005.05.003
关键词: Tracing 、 Inverse 、 Kernel (image processing) 、 Algorithm 、 Mathematics 、 Digital watermarking 、 Watermark 、 Artificial intelligence 、 S transform 、 Affine transformation 、 Computer vision 、 Spread spectrum
摘要: Recently, watermarking synchronization and spread spectrum schemes have become two interesting, new focuses of study. In this paper, we propose a method based on the pre-estimation in order to resist geometric attacks. First, utilize global features by testing them against translation, rotation scaling, present simple estimate transform kernel two-dimensional gray image. Maps, applying some correlative barycenters original are produced that can accurately reflect affine feature Furthermore, unknown variables existing calculated. Secondly, watermark is directly embedded spatial domain. Watermarking tracing well performed watermarked image instead performing an inverse geometrical it. Experimental results show proposed scheme work under several kinds
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