並列タイトル等サブバンド ショリ オ モチイタ ガゾウ デンシ スカシ
Digital watermarking for images using sub-band processing
タイトル(掲載誌)愛知工業大学研究報告 = Bulletin of Aichi Institute of Technology
一般注記This paper describes digital watermarking methods using sub-band image processing. A bi-level (1 bit/pixel) watermarking image has been embedded in target gray scale images. 1-stage and 2-stage sub-band processing methods have been employed. In the 1-stage sub-band, a target image is decomposed into LL, LH, HL and HH sub-band images, and watermarking information 1/0 is embedded in these LH, HL or HH sub-band images. In the 2-stage sub-band, the LL sub-band image is further decomposed into LL2, LH2, HL2 and HH2 sub-band images, and the watermarking information is also embedded in the LH2, HL2 or HH2 sub-band images. For processing each sub-band image, two embedding methods have been deployed. Pixel values of sub-band images are modified by the watermarking information 1/0. The experiments of these watermarking methods have been carried out. It is our findings that how much and what aspects of embedded image quality and watermark recovery accuracy relate to watermark embedding strength and watermark attacks.
identifier:http://repository.aitech.ac.jp/dspace/handle/11133/2161
一次資料へのリンクURLhttp://repository.aitech.ac.jp/dspace/bitstream/11133/2161/1/%e7%b4%80%e8%a6%8148%e5%8f%b7%28P195-206%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)