Byeong-Seob Ko

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Conventional watermarking techniques based on echo hiding provide many benefits, but with several weak points, for example, a lenient decoding process, weakness against multiple encoding attack, etc. In this paper, to improve the weak points of conventional echo hiding, we propose a time-spread echo as an alternative to the conventional echo in the echo(More)
A pitch-scaling modification of a watermarked signal is a severe attack on audio watermarking techniques. In particular, watermarking techniques using a pseudonoise (PN) sequence as a secret key are fragile in the face of this modification because of the desynchronization between the original and embedded PN sequences. We, therefore, propose a log-scaling(More)
We approach the challenging problem of generating highlights from sports broadcasts utilizing audio information only. A language-independent, multi-stage classification approach is employed for detection of key acoustic events which then act as a platform for summarization of highlight scenes. Objective results and human experience indicate that our system(More)
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