K.: Dwt-based watermarking using qr code

Abstract: 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