Video matting of complex scenes
Proceedings of the 29th annual conference on Computer graphics and interactive techniques
Lucas/Kanade meets Horn/Schunck: combining local and global optic flow methods
International Journal of Computer Vision
A Closed-Form Solution to Natural Image Matting
IEEE Transactions on Pattern Analysis and Machine Intelligence
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Digital matting, whose goal is to extract only an interesting foreground component from arbitrary and natural background regions, plays an important role in a variety of areas such as computer vision, graphics and so on. Especially, digital matting has been widely used in film production lately for providing an efficient way of dealing with a complicated composition. However, it is hard to generate a perfect matte from a given image without any prior information because the matting problem is intrinsically ill-posed. This prior information is usually fed by means of a trimap or scribbles. Hence, when extracting foreground objects from any sequent images with the still-image matting method, the works would be definitely laborious and time-consuming. To overcome these problems, video matting of the process of pulling a foreground regions from sequent images has been introduced. For instance, the video matting method proposed by [Chuang et al. 2002] leverages a bayesian technique for image matting and an optical flow algorithm to estimate the trimap flow.