Post-Compression Consideration in Video Watermarking for Wireless Communication

A simple but effective digital watermarking scheme utilizing a context adaptive variable length coding (CAVLC) method is presented for wireless communication system. In the proposed approach, the watermark bits are embedded in the final non-zero quantized coefficient of each DCT block, thereby yielding a potential reduction in the length of the coded block. As a result, the watermarking scheme not only provides the means to check the authenticity and integrity of the video stream, but also improves the compression ratio and therefore reduces both the transmission time and the storage space requirements of the coded video sequence. The results confirm that the proposed scheme enables the detection of malicious tampering attacks and reduces the size of the coded H.264 file. Therefore, the current study is feasible to apply in the video applications of wireless communication such as 3G system

Authors:

• Chuen-Ching Wang
• Yao-Tang Chang
• Yu-Chang Hsu

Keywords:

• 3G
• wireless communication
• CAVLC
• digitalwatermarking
• motion compensation

References:

[1] F. Bartolini, A. Manetti, A. Piva and M. Barni, "A data hiding approach
for correcting errors in H.263 video transmitted over a noisy channel,"
2001 IEEE Fourth Workshop on Multimedia Signal Processing,
pp.65-70, Oct. 2001.
[2] M. Chen, Y. He, and R. L. Lagedijk, "A fragile watermark error detection
scheme for wireless video communications," IEEE Trans. Multimedia,
Vol. 7, No. 2, , pp. 201-211, Apr. 2005.
[3] P. Zhou and Y. He, "A fragile watermark error detection scheme for
JVT," 2003. ISCAS '03. Proceedings of the 2003 International
Symposium on Circuits and Systems, vol. 2, 25-28 May, 2003,
pp.956-958.
[4] C. B. Adsumilli, M. C. Q. Farias, S. K. Mitra, and M. Carli, "A robust
error concealment technique using data hiding for image and video
transmission over lossy channels," IEEE Trans. Circuits Syst for Video
Technol., vol. 15, no. 11, pp. 1394-1406, Nov. 2005.
[5] W.-N. Lie, T. C.-I. Lin, C.-W. Lin, "Enhancing video error resilience by
using data-embedding techniques," IEEE Trans. Circuits Syst. Video
Technol ., Vol. 16, No. 2, pp. 300-308, Feb. 2006.
[6] Advanced Video Coding, I. 14496-10 and I. R. H.264, 2003.
[7] C. C. Wang, Y. C. Hsu, "Fragile Watermarking Scheme for H.264/
Advanced Video Coding Streams," Optical Engineering, vol. 49, Issue2,
pp.027003-027012, Feb, 2010.