TY - JOUR
AU1 - Tang, Xiaoxu
AU2 - Wang, Hongxia
AU3 - Chen, Yi
AB - Reversible Data Hiding (RDH), also referred to as invertible or lossless data hiding, has gradually received much attention from the research community in recent years. In this paper, a RDH scheme for H.264/AVC videos is proposed and it is based on a novel way to expand the difference of a pair of Quantized Discrete Cosine Transform (QDCT) coefficients. The secret data is embedded into the QDCT coefficients of 4 × 4 luminance blocks which selected according to two conditions to achieve good visual quality. In every embeddable 4 × 4 blocks each to- be-embedded information bit is embedded into the selected coefficient-pair. All the selected coefficient-pairs are changed by the proposed difference expanding strategy, which causes low distortion on visual quality. Experimental results have demonstrated that the proposed scheme obtains a little degradation of visual quality and keeps the variation low in bit-rate increase.
TI - Reversible data hiding based on a modified difference expansion for H.264/AVC video streams
JF - Multimedia Tools and Applications
DO - 10.1007/s11042-020-09315-5
DA - 2020-10-06
UR - https://www.deepdyve.com/lp/springer-journals/reversible-data-hiding-based-on-a-modified-difference-expansion-for-h-KuHPcoD0Te
SP - 28661
EP - 28674
VL - 79
IS - 39-40
DP - DeepDyve
ER -