Abstract: Digital watermarking is a technology that hides information in image to provide authentication. Information hiding is done by the tempering content of the image. The embedding process has to be such that the tempering of the media are invisible. The proposed work presents a novel DWT based self-embedding color image watermarking scheme by using cubic interpolation of mean difference matrices of the image and used it asa watermark. Cubic interpolation is used for up-sampling the image. Proposed scheme assure the self-embedding of original image and also assure extraction of watermark information with satisfied visual criteria. Two level DWT decomposition of original for embedding watermark information ensure Robustness of proposed scheme. Experimental results show that the proposed scheme is more efficient and robust.

• Publication Date: 21-Apr-2013
• DOI: 10.15224/978-981-07-6184-4-07
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Abstract: Effect of music on autonomic nervous system (ANS) from Heart rate variability (HRV) signals of pre-music and on-music states is a very recent area of research. ‘n-bit’ rank, for some fixed n, of symbolic dynamics has already been applied in connection with HRV signals of Healthy and CHF subjects. But such a study is completely new in connection with effect of music on ANS through HRV signals. The present paper considers 4-bit rank of symbolic dynamics of HRV signals in both pre-music and on-music stages. It shows that the effect of Music is significant in the on-music state. Moreover it also proves that the significant effect of music is not same for all the subjects.

• Publication Date: 21-Apr-2013
• DOI: 10.15224/978-981-07-6184-4-08
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