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Soft Scissors : An Interactive Tool for Realtime High Quality Matting

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Uploaded on Sep 22, 2009

Authors: Jue Wang, Maneesh Agrawala, Michael Cohen

Abstract: We present Soft Scissors, an interactive tool for extracting alpha mattes of foreground objects in realtime. We recently proposed a novel offline matting algorithm capable of extracting high-quality mattes for complex foreground objects such as furry animals [Wang and Cohen 2007]. In this paper we both improve the quality of our offline algorithm and give it the ability to incrementally update the matte in an online interactive setting. Our realtime system efficiently estimates foreground color thereby allowing both the matte and the final composite to be revealed instantly as the user roughly paints along the edge of the foreground object. In addition, our system can dynamically adjust the width and boundary conditions of the scissoring paint brush to approximately capture the boundary of the foreground object that lies ahead on the scissors path. These advantages in both speed and accuracy create the first interactive tool for high quality image matting and compositing.

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