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This paper presents an automatic and novel approach in detecting the transitions of slides for video sequences of technical lectures. Our approach adopts a foreground vs background segmentation algorithm to separate a presenter from the projected electronic slides. Once a background template is generated, text captions are detected and analyzed. The segmented caption regions as well as background templates together provide salient visual cues to decide whether a slide is flipped and replaced.doi:10.1109/icme.2002.1035669 dblp:conf/icmcs/NgoPH02 fatcat:lg62dcptjngx5jdhvxgxrfjvau