Fragile watermarking using motion vector in MPEG-4 compressed video

• Main Authors: Kai-Hsieh Huang, 黃凱賢
• Other Authors: Daw_Tung Lin
• Format: Others
• Language: en_US
• Published: 2004
• Online Access: http://ndltd.ncl.edu.tw/handle/05367784713655466388

碩士 === 中華大學 === 資訊工程學系碩士班 === 92 === In this thesis, we propose a fragile watermarking scheme for MPEG-4 video authentication, in which, the watermark is embedded in MPEG-4 video encoder. The motion vector is modified into a new bitstream, and the watermark information can be retrieved in MPEG-4 decoder. Experimental results indicate that embedding watermark in motion vector has the advantage of little degrading the video quality, capability to embed watermark in a video sequence, and is effective to authenticate the video sequence. Besides, we wouldn't require the original video during authentication process.