Abstract

A novel temporal-spatial color descriptor representation is developed based on Rough Sets (RS) in compressed domain. Firstly, DCT coefficients and DC coefficients are extracted from original video sequences. Secondly, an Information System Table is constructed using DC coefficients. Thirdly, a concise Information System Table is achieved by using the reduction theory of RS. The Core contains important visual color information and eliminates the redundant video information. At the same time, DC coefficients also contain spatial information of each frame, so the Core of Information System can regard as effective temporal-spatial color descriptor.

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