題名: A Robust Wavelet-Based Watermarking Using Quantization and Human Visual System
作者: Gwoboa Horng( 洪國寶 ) ;Tung-Her Chen( 陳宗和 ) ;San-Hao Wang( 王上豪 ) 貢獻者: Institute of Computer Science, National Chung-Hsing Unversity 關鍵詞: Digital watermarking;DWT;HVS model
日期: 2002-05-16
上傳時間: 2009-12-08T07:38:13Z 出版者: 亞洲大學
摘要: 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.
