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A scheme of information hiding for H.264 based on the prediction difference of intra_4 × 4 is proposed in this paper. According to this difference, the proposed algorithm first divided the intra_4 × 4 prediction modes (I4-modes) into two groups to form the rule of mapping between these modes and the bits to be hidden, and then modified the I4-modes by the rule of mapping to implement the hiding of...
A scheme of information hiding for H.264 based on motion estimation of 1/4 pixel is proposed in this paper. Information is embedded by modulating the best search point of each sub-block during the step of motion estimation of 1/4 pixel. The modulation is based on the mapping rules between these points and the hidden bits. By introducing the rate-distortion cost during the process of modulating, the...
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