| Summary: | 碩士 === 逢甲大學 === 資訊工程所 === 98 === Internet protocol television (IPTV) and multimedia application not only provide entertainment, but also create tremendous business opportunities and attract to illegal pretenders. Digital rights management mechanisms prevent the illegal access, but these mechanisms are still some inherent shortcomings. However, the protection of encryption algorithms only can sustain before decrypt. After decryption, malicious user can obtain the high-quality multimedia content without any protection mechanisms by using record technology and further threat the copyright of the original media.
In our research, we propose a traceable video watermark system that attempt to provide protection for video after decryption. The system applies the different characteristics of video and image not only to achieve the above ability, but also make already existing video watermarking scheme to improve effectiveness of fault tolerance, hiding capability and better image quality in part of our scheme.
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