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Video shot detection plays a fundamental role in video access/analysis. Among many shot detection schemes, color based schemes seem to be the most widely used ones which can be applied to videos of different domains. However color based techniques are not always very eecient. For example, over-detection (high false-alarm rate) may occur, especially for(More)
We present a descriptor for human face objects in visual content. The descriptor enables similaritybased retrieval using a face image as the query. The descriptor for a set of face objects consists of three components: a face subspace that is computed using principal component analysis, a discriminant matrix that classifies the set of faces, and a(More)
DTV data broadcasting offers broadcasters new revenue sources that can offset the infrastructure costs in making the transition to digital broadcasting. At the head-end, the two major players are the content providers and the broadcasters. They should be supported by two distinct components in a data broadcast system architecture, since they have unique(More)
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