VLSI architecture of integer DCT based watermarking with error correction capability

The expansion in technology has explored the cost effective ways of replication & distribution for digital content with least effort. The digital watermark is a technique which can be useful to have an effective protection for authentication and proof of ownership. The proposed method uses Integer DCT with an error correction concept to improve the robustness of the watermarking system. The performance of proposed algorithm is validated on MATLAB in terms of Cross-Correlation with and without error correction code. The reliability of algorithm is also increased almost 10% to 20% with the help of error correction code. The payload of the proposed system is also higher compare to previous work. Experimental results have demonstrated the effectiveness against various attacks such as JPEG lossy compression, noise attacks and geometrical attacks. VLSI architecture of proposed algorithm is designed and hardware implementation is achieved to verify the real-time performance.