Non-parametric Patch Based Video Matting

Sarim, M, Hilton, A and Guillemaut, JY (2009) Non-parametric Patch Based Video Matting

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Abstract

In computer vision, matting is the process of accurate foreground estimation in images and videos. In this paper we presents a novel patch based approach to video matting relying on non-parametric statistics to represent image variations in appearance. This overcomes the limitation of parametric algorithms which only rely on strong colour correlation between the nearby pixels. Initially we construct a clean background by utilising the foreground object’s movement across the background. For a given frame, a trimap is constructed using the background and the last frame’s trimap. A patch-based approach is used to estimate the foreground colour for every unknown pixel and finally the alpha matte is extracted. Quantitative evaluation shows that the technique performs better, in terms of the accuracy and the required user interaction, than the current state-of-the-art parametric approaches.

Item Type:	Conference or Workshop Item (Paper)
Divisions:	Faculty of Engineering and Physical Sciences > Electronic Engineering > Centre for Vision Speech and Signal Processing
Depositing User:	Symplectic Elements
Date Deposited:	30 Mar 2012 14:25
Last Modified:	23 Sep 2013 19:00
URI:	http://epubs.surrey.ac.uk/id/eprint/111019

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