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A blind watermarking technique based on DCT psychovisual threshold for a robust copyright protection

Ernawan, Ferda and M. Nomani, Kabir and Zuriani, Mustaffa (2018) A blind watermarking technique based on DCT psychovisual threshold for a robust copyright protection. In: 12th International Conference for Internet Technology and Secured Transactions (ICITST), 2017, 11-14 December 2017 , Cambridge, United Kingdom. pp. 92-97.. ISBN 9781908320933 (online)

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Abstract

This work presents a blind watermarking technique based on a psychovisual threshold for a robust copyright protection. Psychovisual threshold can provide a trade-off between imperceptibility and robustness of the watermark. This paper proposes a new watermarking scheme where watermarks are embedded on some selected coefficients of DCT frequencies considering psychovisual threshold. The embedding regions are determined using a modified entropy to indicate less distortion areas. Furthermore, the watermark image is scrambled before embedding to provide additional security. The proposed scheme is tested under different types of signal-processing and geometric attack. The experimental results show that our scheme produces higher imperceptibility and robustness of the watermark than the existing schemes.

Item Type: Conference or Workshop Item (Lecture)
Uncontrolled Keywords: Discrete cosine transforms; Entropy; Low pass filters; Robustness; Transform coding; Watermarking; Wiener filters; Embedding scheme; Extraction scheme; Image watermarking; Modified entropy; Psychovisual threshold
Subjects: Q Science > QA Mathematics > QA75 Electronic computers. Computer science
Q Science > QA Mathematics > QA76 Computer software
Faculty/Division: Faculty of Computer System And Software Engineering
Depositing User: Dr. Ferda Ernawan
Date Deposited: 23 May 2018 02:18
Last Modified: 25 Sep 2018 08:47
URI: http://umpir.ump.edu.my/id/eprint/21132
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