Keita Yasutomi

Publication Activity (10 Years)

Years Active: 2008-2023
Publications (10 Years): 34

Top Topics

Biomedical Imaging

Top Venues

IEEE J. Solid State Circuits

Publications

Tatsuya Kobayashi, Keita Yasutomi, Naoki Takada, Shoji Kawahito
An SOI-Based Lock-in Pixel with a Shallow Buried Channel for Reducing Parasitic Light Sensitivity and Improving Modulation Contrast. IEICE Trans. Electron. 106 (10) (2023)
Ryosuke Miyazawa, Yuya Shirakawa, Kamel Mars, Keita Yasutomi, Keiichiro Kagawa, Satoshi Aoyama, Shoji Kawahito
A Time-of-Flight Image Sensor Using 8-Tap P-N Junction Demodulator Pixels. Sensors 23 (8) (2023)
Anh Ngoc Pham, Thoriq Ibrahim, Keita Yasutomi, Shoji Kawahito, Hajime Nagahara, Keiichiro Kagawa
Depth Quality Improvement with a 607 MHz Time-Compressive Computational Pseudo-dToF CMOS Image Sensor. Sensors 23 (23) (2023)
Keiichiro Kagawa, Masaya Horio, Anh Ngoc Pham, Thoriq Ibrahim, Shin-ichiro Okihara, Tatsuki Furuhashi, Taishi Takasawa, Keita Yasutomi, Shoji Kawahito, Hajime Nagahara
A Dual-Mode 303-Megaframes-per-Second Charge-Domain Time-Compressive Computational CMOS Image Sensor. Sensors 22 (5) (2022)
Masaya Horio, Yu Feng, Tomoya Kokado, Taishi Takasawa, Keita Yasutomi, Shoji Kawahito, Takashi Komuro, Hajime Nagahara, Keiichiro Kagawa
Resolving Multi-Path Interference in Compressive Time-of-Flight Depth Imaging with a Multi-Tap Macro-Pixel Computational CMOS Image Sensor. Sensors 22 (7) (2022)
Ryuki Shigemasu, Yuki Teraoka, Satoshi Ota, Harutoyo Hirano, Keita Yasutomi, Shoji Kawahito, Masato Futagawa
Development of a Current Injection - Type Impedance Measurement System for Monitoring Soil Water Content and Ion Concentration. Sensors 22 (9) (2022)
Keita Yasutomi, Shoji Kawahito
Lock-in Pixel Based Time-of-Flight Range Imagers: An Overview. IEICE Trans. Electron. (7) (2022)
Keita Yasutomi, Tatsuki Furuhashi, Koki Sagawa, Taishi Takasawa, Keiichiro Kagawa, Shoji Kawahito
A 38µm Range Precision Time-of-Flight CMOS Range Line Imager with Gating Driver Jitter Reduction Using Charge-Injection Pseudo Photocurrent Reference. ISSCC (2022)
Juyeong Kim, Keita Yasutomi, Keiichiro Kagawa, Shoji Kawahito
High-Linearity High-Resolution Time-of-Flight Linear-Array Digital Image Sensor Using Time-Domain Feedback. Sensors 21 (2) (2021)
Yuya Shirakawa, Keita Yasutomi, Keiichiro Kagawa, Satoshi Aoyama, Shoji Kawahito
An 8-Tap CMOS Lock-In Pixel Image Sensor for Short-Pulse Time-of-Flight Measurements. Sensors 20 (4) (2020)
Sanggwon Lee, Keita Yasutomi, Masato Morita, Hodaka Kawanishi, Shoji Kawahito
A Time-of-Flight Range Sensor Using Four-Tap Lock-In Pixels with High near Infrared Sensitivity for LiDAR Applications. Sensors 20 (1) (2020)
Hiromasa Oku, Kazuki Yamato, Yusuke Tanaka, Keita Yasutomi, Shoji Kawahito
Simulfocus imaging: quasi-simultaneous multi-focus imaging using Lock-in Pixel imager and TAG lens. SIGGRAPH Emerging Technologies (2020)
Atsutaka Miyamichi, Atsushi Ono, Keiichiro Kagawa, Keita Yasutomi, Shoji Kawahito
Plasmonic Color Filter Array with High Color Purity for CMOS Image Sensors. Sensors 19 (8) (2019)
Minho Lee, Min-Woong Seo, Juyeong Kim, Keita Yasutomi, Keiichiro Kagawa, Jang-Kyoo Shin, Shoji Kawahito
A Wide Dynamic Range CMOS Image Sensor with a Charge Splitting Gate and Two Storage Diodes. Sensors 19 (13) (2019)
Chen Cao, Yuya Shirakawa, Leyi Tan, Min-Woong Seo, Keiichiro Kagawa, Keita Yasutomi, Sung-Wook Jun, Tomohiko Kosugi, Satoshi Aoyama, Nobukazu Teranishi, Norimichi Tsumura, Shoji Kawahito
A Time-Resolved NIR Lock-In Pixel CMOS Image Sensor With Background Cancelling Capability for Remote Heart Rate Detection. IEEE J. Solid State Circuits 54 (4) (2019)
Keita Yasutomi, Yushi Okura, Keiichiro Kagawa, Shoji Kawahito
A Sub-100 $\mu$ m-Range-Resolution Time-of-Flight Range Image Sensor With Three-Tap Lock-In Pixels, Non-Overlapping Gate Clock, and Reference Plane Sampling. IEEE J. Solid State Circuits 54 (8) (2019)
Min-Woong Seo, Yuya Shirakawa, Yoshimasa Kawata, Keiichiro Kagawa, Keita Yasutomi, Shoji Kawahito
A Time-Resolved Four-Tap Lock-In Pixel CMOS Image Sensor for Real-Time Fluorescence Lifetime Imaging Microscopy. IEEE J. Solid State Circuits 53 (8) (2018)
Hiroki Kamehama, Shoji Kawahito, Sumeet Shrestha, Syunta Nakanishi, Keita Yasutomi, Ayaki Takeda, Takeshi Go Tsuru, Yasuo Arai
A Low-Noise X-ray Astronomical Silicon-On-Insulator Pixel Detector Using a Pinned Depleted Diode Structure. Sensors 18 (1) (2018)
Kohei Yamada, Komazawa Akihito, Taishi Takasawa, Keita Yasutomi, Keiichiro Kagawa, Shoji Kawahito
A Distance Measurement Method Using A Time-of-Flight CMOS Range Image Sensor with 4-Tap Output Pixels and Multiple Time-Windows. IMSE (2018)
Chen Cao, Yuya Shirakawa, Leyi Tan, Min-Woong Seo, Keiichiro Kagawa, Keita Yasutomi, Tomohiko Kosugi, Satoshi Aoyama, Nobukazu Teranishi, Norimichi Tsumura, Shoji Kawahito
A Two-Tap NIR Lock-in Pixel CMOS Image Sensor with Background Light Cancelling Capability for Non-Contact Heart Rate Detection. VLSI Circuits (2018)
Takuya Yoda, Hajime Nagahara, Rin-Ichiro Taniguchi, Keiichiro Kagawa, Keita Yasutomi, Shoji Kawahito
The Dynamic Photometric Stereo Method Using a Multi-Tap CMOS Image Sensor. Sensors 18 (3) (2018)
Sumeet Shrestha, Shoji Kawahito, Hiroki Kamehama, Syunta Nakanishi, Keita Yasutomi, Keiichiro Kagawa, Nobukazu Teranishi, Ayaki Takeda, Takeshi Go Tsuru, Ikuo Kurachi, Yasuo Arai
A Silicon-on-Insulator-Based Dual-Gain Charge-Sensitive Pixel Detector for Low-Noise X-ray Imaging for Future Astronomical Satellite Missions. Sensors 18 (6) (2018)
Haruki Ishida, Keiichiro Kagawa, Takashi Komuro, Bo Zhang, Min-Woong Seo, Taishi Takasawa, Keita Yasutomi, Shoji Kawahito
Multi-Aperture-Based Probabilistic Noise Reduction of Random Telegraph Signal Noise and Photon Shot Noise in Semi-Photon-Counting Complementary-Metal-Oxide-Semiconductor Image Sensor. Sensors 18 (4) (2018)
Min-Woong Seo, Yuya Shirakawa, Yuriko Masuda, Yoshimasa Kawata, Keiichiro Kagawa, Keita Yasutomi, Shoji Kawahito
4.3 A programmable sub-nanosecond time-gated 4-tap lock-in pixel CMOS image sensor for real-time fluorescence lifetime imaging microscopy. ISSCC (2017)
Yuki Morikawa, Keita Yasutomi, Shoma Imanishi, Taishi Takasawa, Keiichiro Kagawa, Nobukazu Teranishi, Shoji Kawahito
A Lateral Electric Field charge Modulator with Bipolar-gates for Time-resolved Imaging. IMSE (2017)
Kamel Mars, Lioe De Xing, Shoji Kawahito, Keita Yasutomi, Keiichiro Kagawa, Takahiro Yamada, Mamoru Hashimoto
Label-Free Biomedical Imaging Using High-Speed Lock-In Pixel Sensor for Stimulated Raman Scattering. Sensors 17 (11) (2017)
Tongxi Wang, Min-Woong Seo, Keita Yasutomi, Shoji Kawahito
A 19-bit column-parallel folding-integration/cyclic cascaded ADC with a pre-charging technique for CMOS image sensors. IEICE Electron. Express 14 (2) (2017)
Haruki Ishida, Keiichiro Kagawa, Min-Woong Seo, Takashi Komuro, Bo Zhang, Taishi Takasawa, Keita Yasutomi, Shoji Kawahito
RTS and photon shot noise reduction based on maximum likelihood estimate with multi-aperture optics and semi-photon-counting-level CMOS image sensors. IMSE (2017)
Takuya Yoda, Hajime Nagahara, Rin-Ichiro Taniguchi, Keiichiro Kagawa, Keita Yasutomi, Shoji Kawahito
Dynamic photometric stereo method using multi-tap CMOS image sensor. ICPR (2016)
Min-Woong Seo, Keiichiro Kagawa, Keita Yasutomi, Yoshimasa Kawata, Nobukazu Teranishi, Zhuo Li, Izhal Abdul Halin, Shoji Kawahito
A 10 ps Time-Resolution CMOS Image Sensor With Two-Tap True-CDS Lock-In Pixels for Fluorescence Lifetime Imaging. IEEE J. Solid State Circuits 51 (1) (2016)
Taichi Kasigao, Sang-Man Han, Hanh Trang, Taishi Takasawa, Satoshi Aoyama, Keita Yasutomi, Keiichiro Kagawa, Shoji Kawahito
A Time-of-Flight CMOS Range Image Sensor Using 4-Tap Output Pixels with Lateral-Electric-Field Control. IMSE (2016)
Min-Woong Seo, Yuya Shirakawa, Keiichiro Kagawa, Keita Yasutomi, Yoshimasa Kawata, Nobukazu Teranishi, Shoji Kawahito
A high time-resolution two-tap CMOS lock-in pixel image sensor for time-resolved measurements and its applications. BioCAS (2016)
Hanh Trang, Taichi Kasugai, Keigo Isobe, Sang-Man Han, Taichi Takasawa, Xing Lioe De, Keita Yasutomi, Keiichiro Kagawa, Shoji Kawahito
Design, implementation and evaluation of a TOF range image sensor using multi-tap lock-in pixels with cascaded charge draining and modulating gates. IMSE (2016)
Lioe De Xing, Kamel Mars, Shoji Kawahito, Keita Yasutomi, Keiichiro Kagawa, Takahiro Yamada, Mamoru Hashimoto
A Stimulated Raman Scattering CMOS Pixel Using a High-Speed Charge Modulator and Lock-in Amplifier. Sensors 16 (4) (2016)
Min-Woong Seo, Keiichiro Kagawa, Keita Yasutomi, Taishi Takasawa, Yoshimasa Kawata, Nobukazu Teranishi, Zhuo Li, Izhal Abdul Halin, Shoji Kawahito
11.2 A 10.8ps-time-resolution 256×512 image sensor with 2-Tap true-CDS lock-in pixels for fluorescence lifetime imaging. ISSCC (2015)
Futa Mochizuki, Keiichiro Kagawa, Shin-ichiro Okihara, Min-Woong Seo, Bo Zhang, Taishi Takasawa, Keita Yasutomi, Shoji Kawahito
6.4 Single-shot 200Mfps 5×3-aperture compressive CMOS imager. ISSCC (2015)
Lianghua Miao, Keita Yasutomi, Shoma Imanishi, Shoji Kawahito
A column-parallel clock skew self-calibration circuit for time-resolved CMOS image sensors. IEICE Electron. Express 12 (24) (2015)
Bo Zhang, Keiichiro Kagawa, Taishi Takasawa, Min-Woong Seo, Keita Yasutomi, Shoji Kawahito
A high-sensitivity 2x2 multi-aperture color camera based on selective averaging. IMSE (2015)
Tongxi Wang, Amin M. R. Khandaker, Keita Yasutomi, Shoji Kawahito
A digital calibration technique for folding-integration/cyclic cascaded ADCs. MWSCAS (2015)
Han Sang Man, Taishi Takasawa, Tomoyuki Akahori, Keita Yasutomi, Keiichiro Kagawa, Shoji Kawahito
7.4 A 413×240-pixel sub-centimeter resolution Time-of-Flight CMOS image sensor with in-pixel background canceling using lateral-electric-field charge modulators. ISSCC (2014)
Kamel Mars, Beak Guseul, Sang-Man Han, Taishi Takasawa, Keita Yasutomi, Keiichiro Kagawa, Mamoru Hashimoto, Shoji Kawahito
A stimulated Raman scattering imager using high-speed lateral electric field modulator and lock-in pixels amplifiers. IMSE (2014)
Min-Woong Seo, Keita Yasutomi, Keiichiro Kagawa, Shoji Kawahito
A high fill-factor low dark leakage CMOS image sensor with shared-pixel design. IMSE (2014)
Kamel Mars, Ken Egawa, Lioe De Xing, Han Sang Man, Taishi Takasawa, Keita Yasutomi, Keiichiro Kagawa, Mamoru Hashimoto, Shoji Kawahito
Lock-in pixels readout circuit using a high speed lateral electric field modulator with differential charge accumulation for stimulated Raman scattering imager. NEWCAS (2014)
Zhiheng Wei, Keita Yasutomi, Shoji Kawahito
Extremely small differential non-linearity in a DMOS capacitor based cyclic ADC for CMOS image sensors. IEICE Electron. Express 11 (20) (2014)
Takahiro Usui, Keita Yasutomi, Sang-Man Han, Taishi Takasawa, Keiichiro Kagawa, Shoji Kawahito
An indirect time-of-flight measurement technique for sub-mm range resolution using impulse photocurrent response. IMSE (2014)
Takaya Yamazato, Isamu Takai, Hiraku Okada, Toshiaki Fujii, Tomohiro Yendo, Shintaro Arai, Michinori Andoh, Tomohisa Harada, Keita Yasutomi, Keiichiro Kagawa, Shoji Kawahito
Image-sensor-based visible light communication for automotive applications. IEEE Commun. Mag. 52 (7) (2014)
Bo Zhang, Keiichiro Kagawa, Taishi Takasawa, Min-Woong Seo, Keita Yasutomi, Shoji Kawahito
RTS Noise and Dark Current White Defects Reduction Using Selective Averaging Based on a Multi-Aperture System. Sensors 14 (1) (2014)
Keita Yasutomi, Sang-Man Han, Min-Woong Seo, Taishi Takasawa, Keiichiro Kagawa, Shoji Kawahito
A time-resolved image sensor for tubeless streak cameras. IMSE (2014)
Sang-Man Han, Keita Yasutomi, Keiichiro Kagawa, Shoji Kawahito
A CMOS time-of-flight range image sensor using draining only modulation structure. IMSE (2014)
Keita Yasutomi, Takahiro Usui, Han Sang Man, Taishi Takasawa, Keiichiro Kagawa, Shoji Kawahito
7.5 A 0.3mm-resolution Time-of-Flight CMOS range imager with column-gating clock-skew calibration. ISSCC (2014)
Min-Woong Seo, Keiichiro Kagawa, Keita Yasutomi, Shoji Kawahito
A custom CMOS imager for multi-beam laser scanning microscopy and an improvement of scanning speed. Sensors, Cameras, and Systems for Industrial and Scientific Applications (2013)
Sung-Wook Jun, Lianghua Miao, Keita Yasutomi, Keiichiro Kagawa, Shoji Kawahito
Design of a Digitally Error-Corrected Pipeline ADC Using Incomplete Settling of Pre-Charged Residue Amplifiers. IEICE Trans. Electron. (6) (2013)
Mohd Amrallah Mustafa, Min-Woong Seo, Shoji Kawahito, Keita Yasutomi, Keiichiro Kagawa
RTS noise reduction of CMOS image sensors using amplifier-selection pixels. IEICE Electron. Express 10 (15) (2013)
Min-Woong Seo, An Wang, Zhuo Li, Keita Yasutomi, Keiichiro Kagawa, Shoji Kawahito
A CMOS imager using focal-plane pinhole effect for confocal multibeam scanning microscopy. Sensors, Cameras, and Systems for Industrial and Scientific Applications (2012)
Min-Woong Seo, Sungho Suh, Tetsuya Iida, Taishi Takasawa, Keigo Isobe, Takashi Watanabe, Shinya Itoh, Keita Yasutomi, Shoji Kawahito
A Low-Noise High Intrascene Dynamic Range CMOS Image Sensor With a 13 to 19b Variable-Resolution Column-Parallel Folding-Integration/Cyclic ADC. IEEE J. Solid State Circuits 47 (1) (2012)
Kaita Imai, Keita Yasutomi, Keiichiro Kagawa, Shoji Kawahito
A distributed ramp signal generator of column-parallel single-slope ADCs for CMOS image sensors. IEICE Electron. Express 9 (24) (2012)
Zhuo Li, Keita Yasutomi, Taishi Takasawa, Shinya Itoh, Shoji Kawahito
A CMOS image sensor with draining only modulation pixels for fluorescence lifetime imaging. Sensors, Cameras, and Systems for Industrial, Scientific, and Consumer Applications (2011)
M. Shakowat Zaman Sarker, Shinya Itoh, Moeta Hamai, Isamu Takai, Michinori Andoh, Keita Yasutomi, Shoji Kawahito
Design and Implementation of A CMOS Light Pulse Receiver Cell Array for Spatial Optical Communications. Sensors 11 (2) (2011)
Keita Yasutomi, Shinya Itoh, Shoji Kawahito
A 2.7e- temporal noise 99.7% shutter efficiency 92dB dynamic range CMOS image sensor with dual global shutter pixels. ISSCC (2010)
Shinya Itoh, Isamu Takai, M. Shakowat Zaman Sarker, Moeta Hamai, Keita Yasutomi, Michinori Andoh, Shoji Kawahito
A CMOS image sensor for 10Mb/s 70m-range LED-based spatial optical communication. ISSCC (2010)
Shoji Kawahito, Kazutaka Honda, Zheng Liu, Keita Yasutomi, Shinya Itoh
A 15b power-efficient pipeline A/D converter using non-slewing closed-loop amplifiers. CICC (2008)