An interactive video segmentation approach based on GrabCut algorithm

GrabCut is a classical efficient algorithm used in image segmentation. In this paper we apply the approach to video matting in respects as follow: First, user scribbles interactive information in the key frame, which is similar to the interactive segmentation method GrabCut algorithm. Secondly, estimate the probable foreground region by block-matching and then get the segmentation result by GrabCut operator. In addition, morphological approaches are used to make the extracted foreground smooth. Experiments result is demonstrated at the end of this paper, proving the method is efficient, especially to the video in which foreground object moves.