An Robust Watermarking Algorithm based on Coefficients Group Quantization

Abstract

With spreading of digital contents, stealing other’s properties by unpermitted people have become easier. In order to protect the legitimate rights of owners, the digital watermark technologies are becoming more popular. In this paper, we propose an audio watermarking algorithm based on DCT coefficients and audio feature quantization. The proposed algorithm protects watermark information using several factors, such as filtering, audio feature extraction formula, quantization value, etc. Furthermore, in order to evaluate the performance of our proposed algorithm, we experiment our algorithm under the attacks such as low pass filtering, noise addition, and compression. From the experiment result, we can see that the proposed algorithm has high robustness.