Recognition of Structure Information in BalancedIncomplete Block Designs for Robust Watermarking

• Main Authors: Meng-Shu Wu, 吳孟書
• Other Authors: Zhi-Fang Yang
• Format: Others
• Language: zh-TW
• Published: 2008
• Online Access: http://ndltd.ncl.edu.tw/handle/67397041260066738473

碩士 === 國立臺北大學 === 通訊工程研究所 === 96 === In recent years, digital contents are extensively used over the internet. Digital rights protection has become a serious issue. Digital watermarking is a kind of technique by which digital watermarks can be embedded into digital contents, and this technique may be a good solution to digital rights protection due to its robustness and invisibility. This study aims to present a new watermarking approach based on the balanced incomplete block designs (BIBD). The designed watermark is embedded into median frequency in the wavelet domain of the cover image. At the receiver site, the original image is used to extract the embedded watermark, and the mathematical structure of the BIBD is used to identify the watermark.