ホサカ　タダアキ   HOSAKA TADAAKI   保坂　忠明    所属   明治大学  理工学部    職種   専任准教授
言語種別	英語
発行・発表の年月	2009/10
形態種別	学術雑誌
査読	査読あり
標題	Image matting based on local color discrimination by SVM
執筆形態	共著(筆頭者)
掲載誌名	PATTERN RECOGNITION LETTERS
掲載区分	国外
出版社・発行元	ELSEVIER SCIENCE BV
巻・号・頁	30(14),pp.1253-1263
著者・共著者	Tadaaki Hosaka,Takumi Kobayashi,Nobuyuki Otsu
概要	Image matting is a technique used for extracting a foreground object in a static image by estimating the opacity, called alpha matte, at each pixel in the foreground image layer. The common drawback of the previous matting approaches is the decrease in performance when a foreground and its background have similar colors. In order to overcome this problem, we propose a method of estimating alpha mattes by using the color information of neighboring pixels and the support vector machine. We define a cost function on the basis of a Markov random field by considering not only a single pixel but also its neighboring pixels and utilizing the support vector machine to enhance the discrimination between the foreground and the background. This cost function is minimized by the belief propagation and the sampling methods. Qualitative and quantitative results have shown a favorable matting performance compared to the other methods. (C) 2009 Elsevier B.V. All rights reserved.
DOI	10.1016/j.patrec.2009.06.011
ISSN	0167-8655/1872-7344