An Iterative CRT Based Image Watermarking on DCT Domain (DCT 영역에서의 반복적인 CRT 기반의 영상 워터마킹)

Choi Ji Su (최지수); Gye-young Kim (김계영)

doi:10.9708/jksci.2019.24.02.041

An Iterative CRT Based Image Watermarking on DCT Domain

Journal of The Korea Society of Computer and Information
Abbr : JKSCI
2019, 24(2), pp.41-48
DOI : 10.9708/jksci.2019.24.02.041
Publisher : The Korean Society Of Computer And Information
Research Area : Engineering > Computer Science
Received : January 8, 2019
Accepted : February 18, 2019
Published : February 28, 2019

Choi Ji Su ¹, Gye-young Kim ¹

¹숭실대학교

Accredited

ABSTRACT

Digital image watermarking techniques have been studied in various fields in order to protect the copyright of multimedia contents mostly composed by images. JPEG compression is a representative copyright attack for image watermarking. The CRT-based watermarking methods in DCT domain have been studied, because these are robust for JPEG compression attack. In this paper, we propose a new method with improved performance compared with the existing CRT based methods in DCT domain. The proposed method selects the DCT block according to the denseness at the watermark insertion phase, and iteratively adjust the CRT Conditional coefficients at the watermark extraction. This paper shows that it is more robust for the JPEG compression attacks through experimental results.

KEYWORDS

Digital image watermarking, Chinese Reminder Theorem(CRT), Discrete Cosine Transform (DCT), JPEG compression, Image Authentication, Copyright Protection

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* References for papers published after 2023 are currently being built.

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This paper was written with support from the National Research Foundation of Korea.

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Journal of The Korea Society of Computer and Information 2023 KCI Impact Factor : 0.65

An Iterative CRT Based Image Watermarking on DCT Domain

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* References for papers published after 2023 are currently being built.

Journal of The Korea Society of Computer and Information 2023 KCI Impact Factor : 0.65

An Iterative CRT Based Image Watermarking on DCT Domain

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