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A unified approach to gradual shot transition detection

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5 Author(s)
Bescos, J. ; ETSI Telecomunicacion, Univ. Politecnica de Madrid, Spain ; Menendez, J.M. ; Cisneros, G. ; Cabrera, J.
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Nowadays, content-based retrieval of video material is based on the availability of meta-data linked to it. Current approaches to automatically extract these data start from a temporal segmentation of the audio-visual material, that is, a location of the camera shot transitions. Although abrupt transition detection is a problem almost solved, success on gradual transition detection is still very low. We present a detector for all types of gradual transitions (chromatic, geometric, and mixed), based on in depth modelling of the patterns that these transitions generate on a specific frame distance. Results are presented over a representative sample of more than 250 gradual transitions, which belong to a significant part (200') of the MPEG-7 testing material, achieving a recall (percentage of effects correctly detected) and a precision (percentage of non-false positives in the set of detection) notably higher than the ones reported so far

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Image Processing, 2000. Proceedings. 2000 International Conference on  (Volume:3 )

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