### Spread Spectrum Digital Watermarking Scheme Based on Fountain Code and Human Vision System in Contourlet Domain

CHEN Liuyang，LU Rongbo，TENG Juan

1. (1.College of Mathematics and Statistics，Jishou University，Jishou 416000,Hunan China；2.College of Information Science and Enginnering,Jishou University，Jishou 416000,Hunan China)
• Online:2016-03-25 Published:2016-05-11

Abstract:

In order to better select the suitable embedding position and embedding strength in the Contourlet domain，the visual masking based on the Human Visual System（HVS）for Contourlet Transform is proposed.We use this visual masking in the Contourlet domain to select the appropriate embedding strength and embedding position and embed the watermark information，thus improving the invisibility of watermarking scheme.The watermark image is pre-processed by using the fountain code to be encoded，which increases the security and the decoding rate.We use spread spectrum watermarking technology to enhance the ability of watermarking scheme to resist common watermark attacks,which improves the robustness of the watermarking scheme.Experimental results show that the proposed scheme has higher invisibility and robustness compared with the common watermarking scheme，and the security is also improved.