Ryohei Funatsu

16 papers C 2Journal 2Unranked 12
YearRankTypeTitle / Venue / Authors
2020 — conf
Multi-Plane Phase Detection Autofocus for 8K Three-Chip Color Imaging Cameras.
GCCE
Kodai Kikuchi, Ryohei Funatsu, Toshio Yasue, Kohei Tomioka, Tomoki Matsubara, Takayuki Yamashita
2020 — conf
Noise Reduction Effect of Folding-integration ADC in an 8K Image Sensor driven at Various Frame Rates.
IEEE SENSORS
Kohei Tomioka, Toshio Yasue, Ryohei Funatsu, Kodai Kikuchi, Tomoki Matsubara, Takayuki Yamashita, Shoji Kawahito
2019 — conf
Noise suppression effect of folding-integration applied to a column-parallel 3-stage pipeline ADC in a 2.1 μm 33-megapixel CMOS image sensor.
IMSE
Kohei Tomioka, Toshio Yasue, Ryohei Funatsu, Tomoki Matsubara, Tomohiko Kosugi, Sung-Wook Jun, Takashi Watanabe, Masanori Nagase, Toshiaki Kitajima, Satoshi Aoyama, Shoji Kawahito
2018 — conf
A 33Mpixel CMOS imager with multi-functional 3-stage pipeline ADC for 480fps high-speed mode and 120fps low-noise mode.
ISSCC
Toshio Yasue, Kohei Tomioka, Ryohei Funatsu, Tomohiro Nakamura, Takahiro Yamasaki, Hiroshi Shimamoto, Tomohiko Kosugi, Sung-Wook Jun, Takashi Watanabe, Masanori Nagase, Toshiaki Kitajima, Satoshi Aoyama, Shoji Kawahito
2018 C conf
Experimental prototype of SD memory card recordable 8K/60P camcorder.
ICCE
Ryohei Funatsu, Takeshi Kajiyama, Tomoki Matsubara, Hiroshi Shimamoto
2018 C conf
Hybrid autofocus system by using a combination of the sensor-based phase-difference detection and focus-aid signal.
ICCE
Takahiro Yamasaki, Tomohiro Nakamura, Ryohei Funatsu, Hiroshi Shimamoto
2017 — conf
A full-resolution 8K single-chip portable camera system.
IMSE
Tomohiro Nakamura, Takahiro Yamasaki, Ryohei Funatsu, Hiroshi Shimamoto
2017 — conf
Development and Image Quality Evaluation of 8K High Dynamic Range Cameras with Hybrid Log-Gamma.
IQSP
Ryohei Funatsu, Kazuya Kitamura, Toshio Yasue, Daiichi Koide, Hiroshi Shimamoto
2017 J jnl
Progress Overview of Capturing Method for Integral 3-D Imaging Displays.
Proc. IEEE
Jun Arai, Eisuke Nakasu, Takayuki Yamashita, Hitoshi Hiura, Masato Miura, Tomohiro Nakamura, Ryohei Funatsu
2016 — conf
Development of an 8K full-resolution single-chip color image acquisition system.
IMSE
Tomohiro Nakamura, Ryohei Funatsu, Takahiro Yamasaki, Kazuya Kitamura, Hiroshi Shimamoto
2016 — conf
High-visibility focus-aid signal for ultra-high-definition television cameras using maximum value filter with sparse noise reduction.
BMSB
Ryohei Funatsu, Hiroyasu Masuda, Shinichiro Nakamura, Takayuki Yamashita, Hiroshi Shimamoto
2015 — conf
6.2 133Mpixel 60fps CMOS image sensor with 32-column shared high-speed column-parallel SAR ADCs.
ISSCC
Ryohei Funatsu, Steven Huang, Takayuki Yamashita, Kevin Stevulak, Jeff Rysinski, David Estrada, Shi Yan, Takuji Soeno, Tomohiro Nakamura, Tetsuya Hayashida, Hiroshi Shimamoto, Barmak Mansoorian
2014 J jnl
Chromatic interpolation based on anisotropy-scale-mixture statistics.
Signal Process.
Satohiro Tajima, Ryohei Funatsu, Yukihiro Nishida
2013 — conf
A 33M-pixel wide color gamut image capturing system using four CMOS image sensors at 120 Hz.
Sensors, Cameras, and Systems for Industrial and Scientific Applications
Takuji Soeno, Kohei Omura, Takayuki Yamashita, Ryohei Funatsu, Masayuki Sugawara, Makoto Okui
2011 — conf
Single-chip color imaging for UHDTV camera with a 33M-pixel CMOS image sensor.
Sensors, Cameras, and Systems for Industrial, Scientific, and Consumer Applications
Ryohei Funatsu, Takayuki Yamashita, Kohji Mitani, Yuji Nojiri
2007 — conf
Characteristics of experimental single-chip color HDTV image acquisition system with 8M-pixel image sensor.
Digital Photography
Hiroshi Shimamoto, Takayuki Yamashita, Ryohei Funatsu, Kohji Mitani, Yuji Nojiri