Wataru Iwai
Panasonic
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Publication
Featured researches published by Wataru Iwai.
Optics Express | 2017
Tetsuya Hayashida; Hiroaki Iwasaki; Kenichiro Masaoka; Masanori Shimizu; Takayuki Yamashita; Wataru Iwai
We selected appropriate indices for color rendition and determined their recommended values for ultra-high-definition television (UHDTV) production using white LED lighting. Since the spectral sensitivities of UHDTV cameras can be designed to approximate the ideal spectral sensitivities of UHDTV colorimetry, they have more accurate color reproduction than HDTV cameras, and thus the color-rendering properties of the lighting are critical. Comparing images taken under white LEDs with conventional color rendering indices (Ra, R9-14) and recently proposed methods for evaluating color rendition of CQS, TM-30, Qa, and SSI, we found the combination of Ra and R9 appropriate. For white LED lighting, Ra ≥ 90 and R9 ≥ 80 are recommended for UHDTV production.
Archive | 2002
Hiroki Noguchi; Manabu Inoue; Wataru Iwai; Hiromitsu Kobayashi; Katsushige Amano; Tadashi Yano; Yoshinori Tanabe
Archive | 2005
Masayuki Iguchi; Wataru Iwai; 雅行 井口; 彌 岩井
Archive | 2002
Manabu Inoue; Wataru Iwai; Koki Noguchi; Hiroyuki Sekii; Takuya Shinoda; Yuji Sugiyama; 学 井上; 卓哉 信田; 彌 岩井; 雄治 杉山; 公喜 野口; 広行 関井
Archive | 2016
Katsushige Amano; Manabu Inoue; Wataru Iwai; Koki Noguchi; Tadashi Yano; 学 井上; 克重 天野; 彌 岩井; 正 矢野; 公喜 野口
Archive | 2005
Masayuki Iguchi; Wataru Iwai; 雅行 井口; 彌 岩井
Archive | 2004
Masayuki Iguchi; Ai Imai; Wataru Iwai; Yuji Sugiyama; 雅行 井口; 愛 今井; 彌 岩井; 雄治 杉山
Archive | 2001
Manabu Inoue; Wataru Iwai; Koki Noguchi; Kazuteru Obara; 学 井上; 和輝 小原; 彌 岩井; 公喜 野口
Archive | 2002
Manabu Inoue; Wataru Iwai; Koki Noguchi; Kazuteru Obara; Tatsukiyo Uchida; Naoya Yamamoto; 学 井上; 達清 内田; 和輝 小原; 直哉 山本; 彌 岩井; 公喜 野口
Archive | 2001
Manabu Inoue; Wataru Iwai; Koki Noguchi; Kazuteru Obara; Katsunori Okajima; 学 井上; 和輝 小原; 克典 岡嶋; 彌 岩井; 公喜 野口
