テラヘルツ波を用いた断層イメージングにおける面内空間分解能向上

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: 2014/08/01

タイトル(英語): Improvement of In-plane Spatial Resolution in Terahertz Wave Cross-section Imaging

著者名: 福地　哲生（電力中央研究所 電力技術研究所），布施　則一（電力中央研究所 電力技術研究所），水野　麻弥（情報通信研究機構 電磁波計測研究所），福永　香（情報通信研究機構 電磁波計測研究所）

著者名(英語): Tetsuo Fukuchi (Central Research Institute of Electric Power Industry), Norikazu Fuse (Central Research Institute of Electric Power Industry), Maya Mizuno (National Institute of Information and Communications Technology), Kaori Fukunaga (National Institute of Information and Communications Technology)

キーワード: テラヘルツ波，断層イメージング，空間分解能，周波数フィルタ，アンシャープマスク処理　　terahertz wave，cross-sectional imaging，spatial resolution，frequency filtering，unsharp mask processing

要約(英語): Improvement of the in-plane spatial resolution in cross-sectional imaging using terahertz waves was investigated. The effects of frequency filtering, which limits the frequency range of the terahertz waves, and unsharp mask processing, based on a two-dimensional convolution of the imaging result and a mask consisting of a linear combination of the original image and a Laplacian filter, were evaluated. The filtering methods were successful in improving the spatial resolution up to the sampling limit of 0.4 mm. The combination of frequency filtering and unsharp mask processing was found to be effective for improving the contrast in addition to the spatial resolution. Frequency filtering, unsharp mask processing, and their combination were applied to terahertz wave cross-sectional imaging of an IC card.

本誌: 電気学会論文誌C（電子・情報・システム部門誌） Vol.134 No.8 （2014） 特集：産業界における新たな通信・ネットワーク技術の活用

本誌掲載ページ: 1039-1048 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/134/8/134_1039/_article/-char/ja/