A robust zero-watermarking algorithm based on Haar wavelet and normalization

doi:10.7523/j.issn.1002-1175.2013.03.020

Abstract

Abstract:

A robust image zero-watermarking algorithm is proposed by using Haar transform and an improved geometric normalization method. The original image is first transformed into a standard image by using the improved geometric normalization method. The multilayer Haar transform is then applied to the standard image. Finally, the zero watermarks are constructed based on the high and intermediate frequency wavelet coefficients. Experimental results show that the algorithm has strong robustness resisting normal signal process as well as geometric attacks.

Key words: zero-watermarking, DWT, geometric normalization, geometric attack

CLC Number:

TP309

LENG Xiao-Xu, XIAO Jun. A robust zero-watermarking algorithm based on Haar wavelet and normalization[J]. , 2013, 30(3): 410-416.

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