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Application Research on P2P Live Streaming Media Based on Watermarking Technology

Author: SunMingRui
Tutor: SunMingSong
School: Harbin University of Science and Technology
Course: Applied Computer Technology
Keywords: Video Watermarking P2P streaming MPEG video streams Video splicing
CLC: TP309.7
Type: Master's thesis
Year: 2011
Downloads: 13
Quote: 0
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Abstract


With the development of network and multimedia technologies , including image , audio and video , including a growing number of media files converted into digital form , and extensive distribution network . Therefore, the protection of intellectual property has become today's key issues . The proposed digital watermarking is to identify the ownership of digital products and distribution channels . In this environment , the digital watermark seems interesting topic is used to protect the multimedia file , it indicates a not visible , such as copyright information or authentication information flag embedded into the inside of the digital document . In order to improve the effectiveness of , the flag should not be perceived , resistant to malicious attacks attempting to destroy or remove the watermark information . The papers summarize the basic framework of the digital video watermarking technology and theoretical knowledge on the basis of the analysis of the existing video watermarking algorithms , combined with P2P live streaming system transmission security requirements of a robust stream media video watermarking algorithm . The topics are as follows : First, the proposed watermark technology - based P2P streaming architecture . On the basis of analysis of P2P streaming video watermarking technology , combined with the video the watermark in the AnySee network architecture characteristics , according to the characteristics of P2P live streaming systems and MPEG-4 streaming media codec technology principle proposed watermark technology - based P2P live streaming network architecture , including real-time watermark embedding and detection . Secondly, it proposes a video watermarking algorithm based on the MPEG stream . The video splicing technology is applied to the video watermarking algorithm , to select the appropriate watermark embedding region , and embedding the same watermark information at the same pixel point . In the video background mosaic image pixels positioned to provide accurate information . Embedded in the choice of the region , proposed a semi-blind watermarking algorithm in the watermark embedding and detection stage , and a brief explanation of how to fix the threshold for the detection process estimated . Finally, the proposed algorithm simulation experiment . The simulation results show that the embedded watermark imperceptibility robust to common video attacks . The proposed algorithm is compared with other algorithms , in order to enhance the degree of confidence .

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CLC: > Industrial Technology > Automation technology,computer technology > Computing technology,computer technology > General issues > Security and confidentiality > Encryption and decryption
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