The novel and robust watermarking method based on q-logarithm frequency domain

In general, watermarking techniques on transform domain are always mainly researched in literature since it is robust against several attacks. In this paper, we continue to focus on the transform domain and extend it to the novel frequency domain, called q-logarithm frequency domain (q-LFD), for robust watermarking. In order to achieve the robustness of embedding method, we embed the scrambled watermark information into the low-band frequency of q-LFD by using the quantization index modulation (QIM) technique. According to the simulation results, our method can improve the quality of embedded image and also the robustness of watermark based on the optimized parameters: q of q-LFD and Q of QIM. Experimental results show that our proposed method is also robust against geometric attacks, processing attacks, filtering attacks, and so on. © 2015, Springer Science+Business Media New York.