Xing-ming Sun

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Aiming to protect H.264/AVC video in multimedia social network, a selective encryption scheme is put forward. In the scheme, after analyzing the impact of quantization parameter (QP) on the encryption of the sign of T1 s and the impact of encrypting inter-macroblock non-zero coefficients, the sign of intra-macroblock non-zero DCT coefficients, the sign of(More)
Copy-move forgery as one of popular methods is widely used to tamper digital images. Passive authentication is extensively used to detect the copy-move forgery images. This paper proposes a passive authentication scheme for copy-move forgery based on the discrete cosine transform (DCT) and the package clustering algorithm. The copy regions and paste regions(More)
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