Title :
Low-complexity video watermarking scheme resisting geometric distortions
Author :
Ling, Hefei ; Wang, Liyun ; Zou, Fuhao ; Chen, Jiazhong
Author_Institution :
Sch. of Comput. Sci. & Technol., Huazhong Univ. of Sci. & Technol., Wuhan, China
Abstract :
A low-complexity video watermarking scheme against geometric distortions is proposed for DCT-encoded compressed video data. The full DCT coefficients have proven to be invariant to scaling and local geometric attacks. Therefore the watermark is embedded into frames by modifying the low-frequency full DCT coefficients. To meet the requirement of real time performance, a fast inter-transformation is employed to construct full DCTs directly from block DCTs. The experimental results show that the proposed scheme is transparent and robust to signal processing attacks, lots of geometric distortions and frame dropping.
Keywords :
discrete cosine transforms; image watermarking; video coding; DCT encoded compressed video data; block DCT; fast intertransformation; frame dropping; geometric distortion; local geometric attacks; low complexity video watermarking scheme; low frequency full DCT coefficient; real time performance; signal processing attack; Bit error rate; Discrete cosine transforms; Real time systems; Robustness; Signal processing; Streaming media; Watermarking; Video watermarking; full discrete cosine transforms (DCT); geometric attacks; real-time;
Conference_Titel :
Signal Processing (ICSP), 2010 IEEE 10th International Conference on
Conference_Location :
Beijing
Print_ISBN :
978-1-4244-5897-4
DOI :
10.1109/ICOSP.2010.5656993
