Anti-fake Digital Watermarking Algorithm Based on QR Codes and DWT

This article proposes an anti-fake QR codes watermarking algorithm based on the DWT and SVD, aiming at the security problem of QR code in the actual application. Firstly, this paper analyses the advantage of QR code as well as its problems. Secondly, the principle of the chaos encryption and discrete wavelet transform are introduced in detail. Then, we design a new watermarking barcode by the combination of chaos encryption and singular value decomposition and discrete wavelet transform. Experimental results show that the proposed method is significantly superior to the prior arts on the anti-fake performance and watermarking quality.