並列タイトル等A Watermarking Algorithm for Images Using Block Variances and Averages
タイトル(掲載誌)愛知工業大学研究報告. B, 専門関係論文集 = Bulletin of Aichi Institute of Technology. Part B
一般注記This paper presents a watermarking algorithm using statistics of image blocks such as their pixel value variances and averages, and demonstrates its performance via simulation experiment results. This algorithm utilizes human vision characteristics such that subjective image quality degradation is little in edge and texture portions, and embeds watermark information in a way that blocks with higher variance have priorities for their watermark information embedding. Furthermore, in the algorithm, pixel values are quantized beforehand by selecting an appropriate number of blocks in order to enhance its robustness against attacks trying to erase the watermarked information. The simulation experiment results show that the algorithm can enhance its robustness against quantization attacks while suppress image quality degradation.
identifier:http://repository.aitech.ac.jp/dspace/handle/11133/1241
一次資料へのリンクURLhttp://repository.aitech.ac.jp/dspace/bitstream/11133/1241/1/%e7%b4%80%e8%a6%8140%e5%8f%b7B%28P77-80%29.pdf
連携機関・データベース国立情報学研究所 : 学術機関リポジトリデータベース(IRDB)(機関リポジトリ)