研究者情報 | 神奈川大学

コマツ　タカシ Komatsu Takashi 小松　隆所属神奈川大学工学部電気電子情報工学科職種助手
言語種別	日本語
発行・発表の年月	2011/02
形態種別	学術雑誌
査読	査読あり
標題	Color shrinkage for color-image sparse coding and its applications
執筆形態	共著
掲載誌名	IEICE Transactions on Fundamentals of Electronics, Communications and Computer Sciences
巻・号・頁	vol. E94-A(no.2),pp.480-492頁
著者・共著者	T. Saito, Y. Ueda, T. Komatsu
概要	As a basic tool for deriving sparse representation of a color image from its atomic-decomposition with a redundant dictionary, the authors have recently proposed a new kind of shrinkage technique, viz. color shrinkage, which utilizes inter-channel color dependence directly in the three primary color space. Among various schemes of color shrinkage, this paper particularly presents the soft color-shrinkage and the hard color-shrinkage, natural extensions of the classic soft-shrinkage and the classic hard-shrinkage respectively, and shows their advantages over the existing shrinkage approaches where the classic shrinkage techniques are applied after a color transformation such as the opponent color transformation. Moreover, this paper presents the applications of our color-shrinkage schemes to color-image processing in the redundant tight-frame transform domain, and shows their superiority over the existing shrinkage approaches.