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'''Pyramid''' or ''''pyramid representation'''' is a type of [[Scale model|multi-scale]] [[Signal (information theory)|signal]] [[Knowledge representation|representation]] developed by the [[computer vision]], [[image processing]] and [[signal processing]] communities, in which a signal or an image is subject to repeated [[smoothing]] and [[Downsampling|subsampling]]. Historically, pyramid representation is a predecessor to [[scale space]] representation and [[multiresolution analysis]].
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