Koichi Hamada
Hitachi
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Publication
Featured researches published by Koichi Hamada.
Japanese Journal of Applied Physics | 2016
Momoyo Enyama; Koichi Hamada; Muneyuki Fukuda; Hideyuki Kazumi
Annular illumination is effective in enhancing the depth of focus for scanning electron microscopes (SEMs). However, owing to high side lobes of the point-spread function (PSF), annular illumination results in poor image sharpness. The conventional deconvolution method, which converts the PSF to a delta function, can improve image sharpness, but results in artifacts due to noise amplification. In this paper, we propose an image processing method that can reduce the deterioration of image sharpness. With this method, the PSF under annular illumination is converted to that under standard illumination. Through simulations, we verified that the image sharpness of SEM images under annular illumination with the proposed method can be improved without noise amplification.
society of instrument and control engineers of japan | 2015
Yuto Komatsu; Koichi Hamada; Nobuo Nukaga; Tatsuhiko Kagehiro; Yoshiro Ueda; Eisuke Matsubara; Noriyuki Jinno
We developed room layout detection technology for air conditioners. This technology uses an image camera that is equipped with the air conditioners. The technology controls the direction of the wind and their air capacity. It has been installed in commercial products as a “layout search.”.
Archive | 1998
Koichi Hamada; Yasuichiro Kurita; Yoshimichi Takano; Toshihiro Yamamoto; 敏裕 山本; 泰市郎 栗田; 宏一 浜田; 善道 高野
Archive | 2017
Shohei Saito; Masashi Takahashi; Muneaki Yamaguchi; Hiroaki Ito; Koichi Hamada
Archive | 2007
Masahiro Kageyama; Koichi Hamada; Shigeki Nagaya
Archive | 2006
Yoshiaki Mizuhashi; Mitsuo Nakajima; Yasutaka Tsuru; Koichi Hamada
Archive | 1999
Koichi Hamada; Yasuichiro Kurita; 泰市郎 栗田; 宏一 浜田
Archive | 1997
Yasuhiro Akiyama; Koichi Hamada; Masahiro Kageyama; Koji Kamogawa; Takashi Maruyama; Muneaki Yamaguchi; 隆志 丸山; 宗明 山口; 昌広 影山; 宏一 浜田; 靖浩 秋山; 浩二 鴨川
Archive | 2008
Hideharu Hattori; Koichi Hamada; Yasuhiro Akiyama; Masanori Takeuchi
Archive | 2008
Tomokazu Murakami; Koichi Hamada; Muneaki Yamaguchi