 1 A New Watermarking Method for Video Authentication with Tamper Localization
Yuliya Vybornova, Samara National Research UniversityDigital Watermarking, Authentication, Video Protection, Tamper Localization, Forgery Detection, Forensics, Discrete Wavelet Transform, MPEG-4, Motion JPEG In this paper, a new method for video authentication is proposed. The method is based on construction of watermark images, which serve as a secondary carrier for the binary sequence. A unique watermark image is embedded into the coefficients of Discrete Wavelet Transform of each video frame. The analysis of images extracted from video allows to detect spatial attacks, and the sequence carried by the extracted images provides the ability to determine the type of temporal attack and localize the frames, which are tampered. The experimental study on the method quality and efficiency is conducted. According to the results of experiments, the method is suitable for solving authentication tasks. Furthermore, the method is robust to compression and format re-encoding. |
