勾配情報に基づくエッジ保存補間と超解像技術への応用

カテゴリ: 論文誌(論文単位)

グループ名: 【C】電子・情報・システム部門

発行日: 2011/11/01

タイトル(英語): Gradient Based Edge Preserving Interpolation and Its Application to Super-Resolution

著者名: 岩本　祐太郎（立命館大学情報理工学部メディア情報学科），韓　先花（立命館大学情報理工学部メディア情報学科），健山　智子（立命館大学情報理工学部メディア情報学科），大橋　基範（立命館大学情報理工学部メディア情報学科），笹谷　聡（立命館大学情報理工学部メディア情報学科），陳　延偉（立命館大学情報理工学部メディア情報学科）

著者名(英語): Yutaro Iwamoto (Intelligent Image Processing Labs.), Xian-Hua Han (Intelligent Image Processing Labs.), Tomoko Tateyama (Intelligent Image Processing Labs.), Motonori Ohashi (Intelligent Image Processing Labs.), So Sasatani (Intelligent Image Processing Labs.), Yen-Wei Chen (Intelligent Image Processing Labs.)

キーワード: 補間，勾配に基づくエッジ保存，再構成型超解像技術　　interpolation，gradient based edge preservation，reconstruction-based super-resolution

要約(英語): Super-resolution is a process for obtaining high quality and high resolution images from a set of or only one low-resolution image. The most practical one for image super-resolution is reconstruction-based method, which minimizes the difference between observed low-resolution images and the estimation for high resolution image. Therein, interpolation step plays a key role for the estimated high resolution image quality. Usually, the conventional bilinear or bicubic methods are used in the reconstruction-based super-resolution. However, these conventional interpolations generally lead to blurring on edge regions and need more time for convergence in reconstruction-based super-resolution method. Therefore, this paper propose a gradient based edge preserving interpolation method, which can reduce not only artifact noise but also blurring near edge regions in the estimated high resolution image. Furthermore, our proposed interpolation method can also solve large complexity and time-consuming problem in the recently developed New Edge-directed interpolation, which usually can achieve sharp edge in the high resolution reconstructed image. Experiments validate that our proposed interpolation method for image super-resolution is more effective than the conventional interpolation ones.

本誌: 電気学会論文誌C（電子・情報・システム部門誌） Vol.131 No.11 （2011） 特集：電気関係学会関西連合大会

本誌掲載ページ: 1901-1906 p

原稿種別: 論文／日本語

電子版へのリンク: https://www.jstage.jst.go.jp/article/ieejeiss/131/11/131_11_1901/_article/-char/ja/