A NEW ALGORITHM FOR COLLUSION RESISTANT VIDEO WATERMARKING (TA-P5)

Author(s) : Vinod P (Department of ECE, IIT Guwahati, India) P K Bora (Department of ECE, IIT Guwahati, India)

Abstract : This paper presents a new algorithm for collusion resistant multi-bit video watermarking. Video frames from the same scene of the video sequence are decomposed into wavelet coefficient frames by temporal wavelet transform and the watermark is embedded into the low-pass temporal frames. Embedding is done in the DCT domain of the low-pass temporal wavelet frames by applying the perceptual masking properties of the DCT coefficients. The watermark decoder is a blind statistical decoder. In the decoder, the underlying probability distribution of the mid-frequency DCT coefficients of the temporal low-pass wavelet frame is approximated by Generalized gaussian distribution. The robustness of the proposed algorithm against different video degradations and distortions are evaluated and presented.

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