A Synchronization Scheme for Watermarking Based on H.264/AVC
Lujian Hu, Rangding Wang · International Conference on Electric Information and Control Engineering · 2012
In this paper, an effective method was proposed to solve the desynchronization problem during watermark extraction for H.264/AVC. We select Intra_4×4 and Intra_16×16 as the embedding target, each macro block would be embedded into 1 bit watermark. In Intra_4×4, we explorer the characteristic of the DCT coefficient and adjust them to embed watermark while in Intra_16×16 we modulate the LSB bit of the DC coefficient to realize watermark insertion, furthermore, we control the embedding strength to make the video quality and the bit-rate acceptable. Experiment results demonstrate that the watermark can resist the re-encoding effectively, while the real-time performance can also be obtained.