< BK21 플러스 BEST 정보기술 사업단 세미나 개최 안내 >

개최일시 : 2016년 12월 09일 금요일 11:00 ~ 12:00

개최장소 : 공학원 379C 호 (Engineering Research Center 379C)

세미나 제목 : Audio Watermarking for Digital Media Copyrights Protection

발표초록 :

Audio watermarking is a technique providing a promising solution to copyrights protection for digital audio and multimedia products. Using this technique, hidden information called watermark containing copyrights information is imperceptibly embedded into the audio track of a host media. This watermark may be extracted later on from a suspected media to verify the authenticity of the media. Audio watermarking scheme must satisfy the imperceptibility, robustness, and security to adopt as an effective tool to enforce ownership rights.

There are many approaches proposed in the literature and we supplemented that by a spread spectrum based audio watermarking algorithm which includes the psychoacoustic model, multiple scrambling, adaptive synchronization, frequency alignment and coded-image watermark. Basically, a watermark modulated by pseudorandom numbers (PRNs) are embedded in the time-frequency domain of a host signal. Without reference to the host signal, the watermark is detected via performing a normalized correlation between the watermarked signal and the corresponding PRNs. In this talk I will touch the fundamental aspects in this field, depict the challenges, and forward possible solutions.

강연자 : Waleed H. Abdulla / Associate Professor in the University of Auckland and Deputy Head Research of Electrical and Computer Engineering

초청자 : 전기전자공학과 교수 테오벵진