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    Please use this identifier to cite or link to this item: http://asiair.asia.edu.tw/ir/handle/310904400/5007


    Title: A Robust Wavelet-Based Watermarking Using Quantization and Human Visual System
    Authors: Gwoboa Horng(洪國寶);Tung-Her Chen(陳宗和);San-Hao Wang(王上豪)
    Contributors: Institute of Computer Science, National Chung-Hsing Unversity
    Keywords: Digital watermarking;DWT;HVS model
    Date: 2002-05-16
    Issue Date: 2009-12-08 15:38:13 (UTC+8)
    Publisher: 亞洲大學
    Abstract: In this paper, a new robust blind watermarking scheme based on Discrete Wavelet Transform (DWT) is proposed. In order to develop a more robust and transparent watermarking scheme, we use two techniques to enhance strength and transparency. First, the watermark is embedded into the lowest frequency components,such that the maximum robustness is possible. Unfortunately, the quality of the watermarked image is low, that is, the distortion is serious. Second, however, the human visual system (HVS) model is adopted to improve the transparency of the watermarked image while the lowest frequency components can always survive under considerable distortions. Experimental results of different JPEG compression ratio are conducted to prove the robustness property of this watermarking scheme.
    Relation: 第十二屆全國資訊安全會議 17-24
    Appears in Collections:[行動商務與多媒體應用學系] 會議論文

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