2026-03-10T16:25:38Z https://kanagawa-u.repo.nii.ac.jp/oai

oai:kanagawa-u.repo.nii.ac.jp:00006956 2023-05-15T15:44:47Z 376:377:378:558

DWT-Based Watermarking Using QR Code Zhang, Shanjun 張, 善俊 Yoshino, Kazuyoshi 吉野, 和芳 QR code JPEG. human visual system discrete wavelet transform watermark Increased commercial activity on the Internet and media industries demands protection of multimedia contents. In this paper, we introduce a novel watermarking method to embed QR codes in digital images. The method is based on discrete wavelet transform (DWT). The original image is divided into blocks, and QR codes are added to particular bits of LL2 level coefficients of the selected block according to the visual masking effect of the human visual system. It has been shown that this method is robust for JPEG compression and has good transparency. The embedded information can be extracted correctly even if the images are compressed to 11% of the original according to the contents of the images. Article 神奈川大学 2008-06-30 eng departmental bulletin paper VoR http://hdl.handle.net/10487/5265 https://kanagawa-u.repo.nii.ac.jp/records/6956 AA12068302 1880-0483 Science Journal of Kanagawa University 19 3 6 https://kanagawa-u.repo.nii.ac.jp/record/6956/files/02 19 3-6.pdf application/pdf 1.3 MB 2018-11-20