An improved Watermarking Technique for Copyright Protection Based on Tchebichef Moments

Ernawan, Ferda and M. Nomani, Kabir (2019) An improved Watermarking Technique for Copyright Protection Based on Tchebichef Moments. IEEE Access, 7. pp. 151985-152003. ISSN 2169-3536. (Published)

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Watermarking technique is a method to protect ownership of digital multimedia. Most existing watermarking techniques achieve a good level of imperceptibility and robustness. The challenges to achieve higher invisibility and resistance with lower computational time motivate researchers to work on new watermarking schemes. Robustness against noise attacks and JPEG2000 compression needs to be improved to acquire a better resistance capability of the watermark. In this paper, we present a block-based Tchebichef watermarking technique for protecting copyrights. In this technique, the host image is first divided into non-overlapping blocks and Tchebichef moments are calculated for each block. The watermarks are embedded into the blocks with lower visual entropies. The watermark image is scrambled by Arnold transform before embedding into the Tchebichef moments of the selected image blocks. The proposed watermarking scheme was tested under noise additions, filtering, cropping and compressing attacks. Our scheme was verified and compared to the existing watermarking techniques under image geometric and processing attacks. Furthermore, the proposed scheme demonstrated a superior performance in robustness under noise attacks and JPEG2000.

Item Type: Article
Uncontrolled Keywords: copyright; data compression; image coding; image watermarking; transforms; improved watermarking technique; copyright protection; Tchebichef moments; noise attacks; JPEG2000 compression; block-based Tchebichef watermarking technique; nonoverlapping blocks; image watermarking; image blocks; image processing attacks; compressing attacks; image geometric attacks; ownership protection; digital multimedia; Watermarking; Robustness; Entropy; Discrete wavelet transforms; Discrete cosine transforms; Transform coding; Watermarking; copyright protection; embedding algorithm; tchebichef moments; visual entropies
Subjects: Q Science > QA Mathematics > QA76 Computer software
Faculty/Division: Faculty of Computing
Depositing User: Dr. Ferda Ernawan
Date Deposited: 19 Oct 2020 07:44
Last Modified: 19 Oct 2020 07:44
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