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http://dx.doi.org/10.3745/KIPSTB.2003.10B.6.619

Effective Watermark Detection Using Asymmetric Thresholds  

Shin, Chang-Doon (한림정보산업대학)
Oh, Hae-Seok (숭실대학교 컴퓨터학과)
Publication Information
The KIPS Transactions:PartB / v.10B, no.6, 2003 , pp. 619-628 More about this Journal
Abstract
In this paper, an effective watermark detection technique in the wavelet transform domain is proposed. In this proposed method, the image is 2-level wavelet transformed, and then the watermark with a binary logo is embedded into middle band except baseband and high band to consider Invisibility and robustness. In this paper, we use an asymmetric thresholds watermarking (ATW) in which detection threshold is higher than inserting threshold in order to enhance watermark detection ratio in attacked images. In watermark detection phase, the detection value is not changed when the difference of the selected wavelet neighboring coefficient pairs Is smaller than specific value. The experimental results show that the proposed method has good quality and is robust to various attacks such as the JPEG lossy compression, noise addition, cropping, blurring, etc.
Keywords
Copyright Protection; Watermarking; Asymmetric Thresholds;
Citations & Related Records
Times Cited By KSCI : 4  (Citation Analysis)
연도 인용수 순위
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