Video Reversible Data Hiding Based on Motion Vector

Aiming at the problem that the existing motion vector data hiding algorithms based on two-dimensional histogram modification do not fully utilize the embedding space, a large-capacity video reversible data hiding algorithm is proposed. Firstly, the prediction error is calculated by using the prediction algorithm based on the spatial location of the motion vector, and the prediction error pair is obtained. Then, the secret information is embedded by the designed embedding strategy combining two-dimensional and one-dimensional histograms. Finally, the idea of two-layer embedding is combined to further increase the embedding capacity. Compared with the latest data hiding algorithms of the same type, the embedding capacity of this algorithm is increased by an average of 2.23 times.