Tianhang Chen

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Based on the strong correlation of adjacent luminance blocks, this paper proposes a video watermarking algorithm based on the correlation of adjacent luminance blocks in the MPEG-4 video coding standard bit-stream. In the algorithm, the watermark is embedded in the DCT coefficients of I frames and P frames. This algorithm adopts the re-embedding and optimal(More)
This paper provides systematic analysis and controller design methods for high-performance two-mass drive systems. A non-parametric method is introduced to identify dynamics of two-mass drive system, especially the resonance and anti-resonance frequencies. Compared with the conventional Fast Fourier Transform (FFT) approach, the non-parametric method can(More)
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