DWT and Signal Energy Based Zero-Watermarking Algorithm for Text Image

Abstract:

A zero-watermarking algorithm for text image that based on DWT and the signal energy was proposed. We first change the text file into the corresponding binary image, then apply triple-wavelet transform on the binary image, and combine relations of the signal energy to construct zero-watermark. At the watermark detection step we use the similarity to judge the copyright Information. The attack experiments shown that the proposed algorithm were robust to a variety of attacks, and had a good Invisibility. The watermark algorithm obtained a better solution to the embedding capacity and the Invisibility, for the zero-watermark algorithm does not need to modify the carrier data. So it can meet the requirements of practical application.

• Periodical: Advanced Materials Research (Volumes 631-632)
• Pages: 1313-1317
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.631-632.1313
• Online since: January 2013
• Authors: Qi Wei Lin
• Keywords: Discrete Wavelet Transform (DWT), Signal Energy, Similarity, Zero-Watermark

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