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Publication

2024

[Paper]

  • Yutong Gu, Hiromasa Oku, Masahiro Todoh: American Sign Language Recognition and Translation Using Perception Neuron Wearable Inertial Motion Capture System, Sensors, Vol.24, No.2, 453 (2024) [doi:10.3390/s24020453]

2023

[Paper]

[Invited Talk]

  • Eric Fujiwara, Hiromasa Oku, Cristiano Cordeiro: Soft Optical Fibers Made of Agar, 2023 MRS Fall Meeting & Exhibit (Online/Boston, USA, 2023.12.05) EL05.10.02

  • Hiromasa Oku: Aerial display technology based on dynamic projection mapping and flying screens (Invited Paper), SPIE OPTICS+PHOTONICS, Industrial Optical Devices and Systems (ODS 2023) (San Diego Convention Center, San Diego, USA, 2023.08.21) / 12684-18

  • Hiromasa Oku:  Aerial display based on high-speed visual servoing using dynamic optical components (Invited), The 6th International Conference on Intelligent Robotics and Control Engineering (IRCE 2023) (Jinlin, China, 2023.08.05) Invited Session 2: Active Vision and Interaction

  • Hiromasa Oku: Simultaneous imaging of arbitrary focus and gaze-direction based on nanoseconds exposure timing control (Keynote), 3rd International Conference on Computational Imaging (CITA2023) (University of Technology Sydney, Sydney, Australia, 2023.06.03)

[Conference]​

  • Yuito Hirohashi and Hiromasa Oku: Aerial Display Method Using a Flying Screen with an IR Marker and Long Range Dynamic Projection Mapping,  SIGGRAPH Asia 2023 Posters (SA '23) (International Convention Centre (ICC), Sydney, Australia, 2023.12.13-15),  Article 2, 1–2. [doi:10.1145/3610542.3626123​] 

  • ​Eric Fujiwara, Cristiano Cordeiro, Hiromasa Oku, Carlos Suzuki: Sensing with agar-based optical waveguides, SPIE Future Sensing Technologies (SPIE FST 2023) (Pacifico Yokohama National Convention Hall, Yokohama, Kanagawa, 2023.4.19) / 12327-31

  • Masatoshi Iuchi, Yuito Hirohashi, Hiromasa Oku: Proposal for an aerial display using dynamic projection mapping on a distant flying screen (Conference Paper, Acceptance rate ~21%), the 30th IEEE Conference on Virtual Reality and 3D User Interfaces (IEEE VR 2023) (Online/Pudong Shangri-La Hotel, Shanghai, China, 2023.3.28) / Proc. IEEE VR 2023, pp. 603-608

  • Yuki Funato, Suzuno Hayashi, Hiromasa Oku: Edible Light Pipe Made of Candy (Poster), the 30th IEEE Conference on Virtual Reality and 3D User Interfaces (IEEE VR 2023) (Online/Pudong Shangri-La Hotel, Shanghai, China, 2023.3.29) / Proc. IEEE VR 2023, pp. 859-860

2022

[Paper]

  • Hiromu Kijima, Hiromasa Oku: Structured Light Field by Two Projectors Placed in Parallel for High-speed and Precise 3D Feedback, Journal of Robotics and Mechatronics, Vol.34, No.5, pp. 1096-1110 (2022) [doi:10.20965/jrm.2022.p1096]

  • Kazuki Yamato, Masatoshi Iuchi, and Hiromasa Oku: High-speed and Low-latency 3D Fluorescence Imaging for Robotic Microscope, Journal of Robotics and Mechatronics, Vol.34, No.5, pp. 1164-1174 (2022) [doi:10.20965/jrm.2022.p1164]

  • Hiromasa Oku, Miko Sato, and Yuki Funato: Edible Retoreflector Made of Candy, IEEE Access, Vol.10, pp.24749-24758 (2022) [doi:10.1109/ACCESS.2022.3155603​]

  • Kazuki Arai, Hiromasa Oku : High speed light sheet microscope with millisecond control of focus and sheet light, Journal of the Robotics Society of Japan (2022) (in Japanese, to appear)

[Invited Talk]​

  • Hiromasa Oku, Masatoshi Iuchi : Aerial Displays Based on Dynamic Projection Mapping on Drones (Invited), The 29th International Display Workshops (IDW'22) (Online/Fukuoka International Congress Center, Fukuoka, Japan, 2022.12.16), PRJ7-1

  • Hiromasa Oku : Dynamic Displays based on High-Speed Optical Components (invited), The 22nd International Meeting on Information Display (iMiD 2022), (Online/BEXCO, Busan, Korea, 2022.08.25), E37-1

[Conference]​

  • Kazuki Arai, Hiromasa Oku: A 100 volume/s light-sheet microscope applied to 3D motion measurement of freely swimming cells, OPTICA Imaging and Applied Optics Congress 2022 (Hyatt Regency Vancouver, Vancouver, Canada or online, 2022.7.15) / 3F3A.5

2021

[Paper]

  • Shino Higuchi, Hiromasa Oku : Wide angular range dynamic projection mapping method applied to drone-based avatar robot (short paper), Advanced Robotics, Vol.35, Issue 11, pp.675-684 (2021) [doi:10.1080/01691864.2021.1928550]

[Invited Talk]​

  • Hiromasa Oku : Arbitrary and multiple focusing based on TAG lens and nanoseconds timing control, OSK-OSA-OSJ Joint Symposia on Optics, Optics and Photonics Congress 2021 (Online/ICC Jeju Korea, 2021.07.07), W2B-XI-.02

[Conference]​

  • Shino Higuchi and Hiromasa Oku: Wide Angular Range Dynamic Projection Mapping Method Applied to the Projection on a Flying Drone, ACM SIGGRAPH 2021 Posters (SIGGRAPH '21) (Virtual Conference, 2021.8.9-13) / Article 22, 1-2. [doi:10.1145/3450618.3469137]

  • Chanrathnak Borann, Masaki Yamashita, Hiromasa Oku : Improving CNN-based Tracking Method for Visual Feedback System to Perform Online Tracking at 300fps, Optics & Photonics International Congress 2021 (OPIC 2021) (Online, 2021.4.21) / Proc. OPIC 2021, IoT-SNAP-4-03

2020

[Paper]

  • Kohei Suzuki, Yugo Fukano, and Hiromasa Oku : 1000-volume/s high-speed volumetric display for high-speed HMD, Optics Express, Vol. 28, Issue 20, pp. 29455-29468 (2020) [doi:10.1364/OE.401778]

  • Kazuki Yamato, Yusuke Tanaka, Hiromasa Oku, Keita Yasutomi, and Shoji Kawahito : Quasi-simultaneous Multi-focus Imaging Using Lock-in Pixel Image Sensor and TAG Lens, Optics Express, Vol. 28, Issue 13, pp. 19152-19162 (2020) [doi:10.1364/OE.394760​]

  • Eric Fujiwara, Thiago D. Cabral, Miko Sato, Hiromasa Oku, Cristiano M. B. Cordeiro : Agarose-based structured optical fibre, Scientific Reports, Vol.10, 7035 (2020) [doi:10.1038/s41598-020-64103-3​​]

  • Kazuki Yamato, Hiroyuki Chiba, Hiromasa Oku : High Speed Three Dimensional Tracking of Swimming Cell by Synchronous Modulation between TeCE Camera and TAG Lens, IEEE Robotics and Automation Letters, Vol.5, No.2, pp. 1907-1914, April 2020. [doi:10.1109/LRA.2020.2969911]

[Invited Talk]​

  • Hiromasa Oku, Kazuki Yamato, Keita Yasutomi, Shoji Kawahito : AIS1/PRJ1-3L Arbitrary Focusing based on Nano-Second Multi-Exposure and TAG Lens (invited), The 27th International Display Workshops (IDW'20) (Virtual Conference, 2020.12.9) / Proc. International Display Workshops, Vol.27, pp.969-972 (2020)

[Conference]​

  • Hiromasa Oku, Kazuki Yamato, Yusuke Tanaka, Keita Yasutomi, and Shoji Kawahito, Simulfocus imaging: quasi-simultaneous multi-focus imaging using Lock-in Pixel imager and TAG lens, Proc. ACM SIGGRAPH 2020 Emerging Technologies (SIGGRAPH '20) (Virtual Conference, 2020.8.28) / Article 18, 1–2. https://doi.org/10.1145/3388534.3407298​​

  • Kohei Suzuki, Yugo Fukano, Hiromasa Oku : Vergence-accommodation conflict free near eye volumetric display principle with high-speed display rate of 1000 volumes/s, OSA Imaging and Applied Optics Congress (Virtual Conference, 2020.6.26) DF2A.1

  • Kazuki Yamato, Hiroyuki Chiba, Hiromasa Oku : High Speed Three Dimensional Tracking of Swimming Cell by Synchronous Modulation between TeCE Camera and TAG Lens, IEEE Robotics and Automation Letters (RA-L) paper (Vol.5, No.2, pp. 1907-1914, April 2020) presented at the 2020 IEEE International Conference on Robotics and Automation (ICRA 2020) (Virtual Conference, 2020.6.3) WeD16

2019

[Paper]

  • Tomoaki Mashimo, Shunsuke Iduhara, Zhong Zhang, Hiromasa Oku : High-speed Visual Feedback Control of Miniature Rotating Mirror System using a Micro Ultrasonic Motor, IEEE Access, Vol.8, pp. 38546-38553 (2020)  (First Online: 03 December 2019) [doi:10.1109/ACCESS.2019.2957298​]

  • Miyu Nomura, Hiromasa Oku : Edible lens made of agar, Optical Review (2019) [doi:10.1007/s10043-019-00557-9​]

  • Kazuki Yamato, Toshihiko Yamashita, Hiroyuki Chiba and Hiromasa Oku : Fast Volumetric Feedback under Microscope by Temporally Coded Exposure Camera, Sensors, Vol.19, No.7, 1606 (2019) [doi:10.3390/s19071606]

[Conference]

  • Hiromasa Oku : Edible optics and its potential applications, 2nd Workshop on The Future of Computing & Food (Koshinkan KS209, Kinugasa Campus, Ritsumeikan University, Kyoto, Japan, 2019.3.28) / in Inspiration Talks.

  • Miyu Nomura, Hiromasa Oku : Edible lens made of agar, the 26th IEEE International Conference on Virtual Reality and 3D User Interfaces (IEEE VR 2019) (Osaka International Convention Center, Osaka, 2019.3.27) / Poster #153

  • Miko Sato, Yuki Funato, Hiromasa Oku : Edible Retroreflector Made of Candy, the 26th IEEE International Conference on Virtual Reality and 3D User Interfaces (IEEE VR 2019) (Osaka International Convention Center, Osaka, 2019.3.26) / Poster #101

2018

[Paper]

  • Hiromasa Oku, Takahiro Uji, Yiting Zhang, Kumi Shibahara : Edible fiducial marker made of edible retroreflector, Computers & Graphics, Vol.77, pp.156-165 (2018) [doi:10.1016/j.cag.2018.10.002]

  • Kazuki Yamato, Hiroyuki Chiba, Toshihiko Yamashita, Hiromasa Oku : 1 ms 3D Feedback Microscope with 69 kHz Synchronous Modulation of Focal Position and Illumination, IEEE Robotics and Automation Letters, Vol.3, Issue 3, pp.1978-1984 (2018) [doi:10.1109/LRA.2018.2792151]

[Invited Talk]

  • Hiromasa Oku : Edible Retroreflector for Dynamic Projection Mapping on Foods (invited), Laser Display and Lighting Conference (LDC2018), OPTICS & PHOTONICS International Congress 2018 (Pacifico Yokohama, Kanagawa, 2018.4.24)/Session No. LDC4-1

[Conference]

  • Kazuki Yamato, Toshihiko Yamashita, Hiroyuki Chiba, Hiromasa Oku : Temporally Coded Exposure Camera for High-Speed Feedback of Microscopic 3D Information, 2018 IEEE International Conference on Robotics and Biomimetics (ROBIO 2018) (Kuala Lumpur Convention Centre, Kuala Lumpur, Malaysia, 2018.12.14) / Proceedings, pp.958-963

  • Hiromasa Oku, Miyu Nomura, Kumi Shibahara, Akihiro Obara : Edible Projection Mapping, In Proceedings of Siggraph Asia’18 (SA'18) Emerging Technologies. (Tokyo International Forum, Tokyo, 2018.12.5-7) ACM, New York, NY, USA, 2 pages. https://doi.org/10.1145/3275476.3275486

  • Toshihiko Yamashita, Hiroyuki Chiba, Kazuki Yamato, Hiromasa Oku : Development of a coded exposure camera for high-speed 3D measurememt using microscope, OSA Imaging and Applied Optics Congress (Wyndham Orlando Resort International Drive, Orlando, USA, 2018.06.26)/ITu3B.2

  • Kazuki Yamato, Hiroyuki Chiba, Toshihiko Yamashita, Hiromasa Oku : 1 ms 3D Feedback Microscope with 69 kHz Synchronous Modulation of Focal Position and Illumination, IEEE Robotics and Automation Letters (RA-L) paper (Vol.3, Issue 3, pp.1978-1984, 2018) presented at the 2018 IEEE International Conference on Robotics and Automation (ICRA 2018) (Brisbane Convention & Exhibition Centre, Brisbane, Australia, 2018.5.23)

2017

[Award]

  • 2017 Best Paper Award, 23rd ACM Symposium on Virtual Reality Software and Technology (VRST '17)

[Paper]

  • Takahiro Uji, Yiting Zhang, and Hiromasa Oku : Proposal of Edible Retroreflector and Its Prototype, Transactions of the Virtual Reality Society of Japan, Vol.22, No.4, pp.535-543 (2017) [doi:10.18974/tvrsj.22.4_535] (in Japanese)

  • Lihui Wang, Hiromasa Oku, and Masatoshi Ishikawa : Paraxial ray solution for liquid-filled variable focus lenses, Japanese Journal of Applied Physics, Vol.56, 122501 (2017) [doi:10.7567/JJAP.56.122501]

  • Tomohiro Sueishi, Hiromasa Oku and Masatoshi Ishikawa : Lumipen 2: Dynamic Projection Mapping with Mirror-Based Robust High-Speed Tracking against Illumination Changes, Presence Teleoperators & Virtual Environments, Vol.25, Issue 4, pp.299-321 (2017) [doi:10.1162/PRES_a_00275]

  • Tomohiro Sueishi, Hiromasa Oku and Masatoshi Ishikawa : High-precision Calibration Method for Three-dimensional Measurement of a Mirror-based High-speed Optical Axis Controller, The Journal of The Institute of Image Information and Television Engineers, Vol.71, No.5, pp.J162-J171 (2017) (in Japanese)

[Article]

  • Hiromasa Oku and Kazuhisa Iida : Automatic omni-directional, high-speed, pan-tilt platform, SPIE Newsroom (Technical Article) (2017.02.23) [doi:10.1117/2.1201611.006748]

[Invited Talk] 

  • Hiromasa Oku : Dynamic Imaging Technologies Using High-speed Optical Components (invited), International Symposium on Imaging, Sensing, and Optical Memory 2017 (ISOM'17) (Kunibiki Messe, Shimane, 2017.10.23) / Technical Digest, Mo-B-01

  • Hiromasa Oku : Fundamental study on ultra high-speed 3D biological imaging using a tunable acoustic gradient (TAG) index device, International Workshop on Quantitative Biology 2017, Session IV-2 (Keio University, Yagami Campus, Kanagawa, 2017.4.15)

[Conference]

  • Takahiro Uji, Yiting Zhang, and Hiromasa Oku : Edible Retroreflector (Full Paper), 23rd ACM Symposium on Virtual Reality Software and Technology (VRST ’17) (Lindholmen Conference Centre, Gothenburg, Sweden, 2017.11.08) / Proceedings [doi:10.1145/3139131.3139148] (acceptance rate 21%)  (Best Paper Award)

2016

[Paper]

  • Akihiro Obara, Xu Yang, and Hiromasa Oku : Structured Light Field Generated by Two Projectors for High-Speed Three Dimensional Measurement, Journal of Robotics and Mechatronics, Vol.28, No.4, pp.523-532 (2016) [doi:10.20965/jrm.2016.p0523 ]

  • Koseki Kobayashi-Kirschvink, Hiromasa Oku  : Design Principles of a High-speed Omni-Scannable Gaze Controller, IEEE Robotics and Automation Letters, Vol.1, Issue 2, pp.836-843 (2016) [doi:10.1109/LRA.2016.2524981]

  • Takuya Matsumoto, Hiromasa Oku and Masatoshi Ishikawa : High-Speed Real-Time Depth Estimation by Projecting Structured Light Field, Journal of Robotics Society of Japan, Vol.34, No.1, pp.48-55 (2016) (in Japanese)

[Book]

  • Masatoshi Ishikawa, Idaku Ishii, Yutaka Sakaguchi, Makoto Shimojo, Hiroyuki Shinoda, Hirotsugu Yamamoto, Takashi Komuro, Hiromasa Oku, Yutaka Nakajima, Yoshihiro Watanabe : Dynamic Information Space Based on High-Speed Sensor Technology, Human-Harmonized Information Technology --- Vertical Impact --- (Toyoaki Nishida Ed.), Vol.1, Springer, pp.97-136 (2016) , ISBN: 978-4-431-55865-1 (Print) 978-4-431-55867-5 (Online)[doi:10.1007/978-4-431-55867-5_5]

[Invited Talk]

  • Hiromasa Oku : Dynamic Image Control based on High-Speed Optical Devices and its Applications in Sports Science, Japan Table Tennis Association Sports Science and Medicine Committee International Meeting 2016, Special Program (Ajinomoto National Training Center, Tokyo, 2016.9.24)

[Conference]

  • Yukimi Tateno, Masato Ishii, Hiromasa Oku : High resolution imaging of a subsonic projectile using automated mirrors with large aperture, The 31st International Congress on High-speed Imaging and Photonics (31st ICHSIP) (Hotel Hankyu Expo Park, Osaka, Japan, 2016.11.10) / Proceedings, pp. 734-737

    • Y. Tateno ; M. Ishii and H. Oku : High resolution imaging of a subsonic projectile using automated mirrors with large aperture, Proc. SPIE 10328, Selected Papers from the 31st International Congress on High-Speed Imaging and Photonics, 103280W (February 20, 2017) [doi:10.1117/12.2269907]

  • Koseki Kobayashi-Kirschvink, Hiromasa Oku : Design Principles of a High-speed Omni-scannable Gaze Controller, IEEE Robotics and Automation Letters (RA-L) paper (Vol.1, Issue 2, pp.836-843, 2016) presented at the 2016 IEEE International Conference on Robotics and Automation (ICRA 2016) (Stockholm Waterfront Congress Centre, Stockholm, Sweden, 2016.5.18)

  • Kazuhisa Iida and Hiromasa Oku : Saccade Mirror 3: High-speed gaze controller with ultra wide gaze control range using triple rotational mirrors, 2016 IEEE International Conference on Robotics and Automation (ICRA 2016) (Stockholm Waterfront Congress Centre, Stockholm, Sweden, 2016.5.17) / Proceedings, pp.624-629

  • Yuichiro Nakai, Atushi Taniguchi, Shigenori Nonaka, Viji M. Draviam, Hiromasa Oku, Noriko Hiroi, Akira Funahashi : Development of 3D single particle tracking system with an electrically tunable lens, NIG International Symposium 2016 Japan Q-Bio week, Tokyo Symposium (Institute of Industrial Science, the University of Tokyo, Tokyo, 2016.1.9-10) / poster number, 16

2015

[Paper]

  • Kohei Okumura, Keiko Yokoyama, Hiromasa Oku and Masatoshi Ishikawa : 1ms Auto Pan-Tilt - video shooting technology for objects in motion based on Saccade Mirror with background subtraction, Advanced Robotics, Vol.29, No.7, pp.457-468 (2015) [doi:10.1080/01691864.2015.1011299]

  • Yuichiro Nakai, Mitsunori Ozeki, Takumi Hiraiwa, Ryuichi Tanimoto, Akira Funahashi, Noriko Hiroi, Atsushi Taniguchi, Shigenori Nonaka, Viviane Boilot, Roshan Shrestha, Joanna Clark, Naoka Tamura, Viji M. Draviam and Hiromasa Oku : High-speed microscopy with an electrically tunable lens to image the dynamics of in vivo molecular complexes, Review of Scientific Instruments, Vol.86, 013707 (2015) [doi:10.1063/1.4905330]

[Invited Talk]

  • Hiromasa Oku : Dynamic Image Control based on High-speed Optical Component, Taoyaka Program Seminar (Hiroshima University, Hiroshima, Japan, 2015.6.1)

[Conference]

  • Tomohiro Sueishi, Hiromasa Oku and Masatoshi Ishikawa : Mirror-based High-speed Gaze Controller Calibration with Optics and Illumination Control, 2015 IEEE/RSJ International Conference on Intelligent Robots and Systems (IROS 2015) (Congress Center Hamburg, Hamburg, Germany, 2015.9.30) / Proceedings, pp.3064-3070

  • Tomohiro Sueishi, Hiromasa Oku, Masatoshi Ishikawa : Robust High-speed Tracking against Illumination Changes for Dynamic Projection Mapping, IEEE Virtual Reality Conference (VR2015) (Arles Congress Center, Arles, France, 2015.3.26) / pp.97-104  (Short paper, Oral)

  • Yuichiro Nakai, Takumi Hiraiwa, Ryuichi Tanimoto, Mitsunori Ozeki, Atsushi Taniguchi, Shigenori Nonaka, Hiromasa Oku, Viji Draviam, Noriko Hiroi, Akira Funahashi : High-speed microscopy with an electrically tunable lens to image the dynamics of in vivo molecular complexes, Quantitative Bioimaging Conference (QBI 2015) (Institut Pasteur, Paris, France, 2015.01.07) / submission ID, 47

[Conference (not academic)]

  • Chikara Miyaji, Yuki Inaba, Hiromasa Oku, Takanori Abe, Katsutoshi Saito and Kazuto Yoshida : Developing an immediate feedback system on ball rotation speed in table tennis, Japan Table Tennis Association Sports Science and Medicine Committee International Meeting (National Training Center, Tokyo, 2015.09.20) / Programme and Abstracts, p.11

2014

[Paper]

  • Lihui Wang, Hiromasa Oku, and Masatoshi Ishikawa : An improved low-optical-power variable focus lens with a large aperture, Optics Express, Vol.22, Iss.16, pp. 19448-19456 (2014) [doi:10.1364/OE.22.019448]

    • also included in, The Virtual Journal for Biomedical Optics, Vol.9, Iss.10 (2014)

  • Tomohiro Sueishi, Keisuke Hasegawa, Kohei Okumura, Hiromasa Oku, Hiroyuki Shinoda and Masatoshi Ishikawa : High-speed Dynamic Information Environment with Airborne Ultrasound Tactile Display-Camera System and The Calibration Method, Transactions of the Virtual Reality Society of Japan, Vol.19, No.2, pp.173-183 (2014) (in Japanese)

  • Leo Miyashita, Yuko Zou, Kohei Okumura, Hiromasa Oku, Masatoshi Ishikawa : Non-contact Vibration Measurement System for Dynamic Objects by Using High-speed Optical Axis Control, Transactions of the Virtual Reality Society of Japan, Vol.19, No.2, pp.99-104 (2014) (in Japanese)

  • Taku Senoo, Yuji Yamakawa, Yoshihiro Watanabe, Hiromasa Oku and Masatoshi Ishikawa : High-Speed Vision and its Application Systems, Journal of Robotics and Mechatronics, Vol.26, No.3, pp.287-301 (2014)

[Review paper]

  • Yoshihiro Watanabe, Hiromasa Oku, Masatoshi Ishikawa : Architectures and applications of high-speed vision, Optical Review, Vol.21, Iss.6, pp. 875-882 (2014) [doi:10.1007/s10043-014-0140-8]

[Conference]

  • Lihui Wang, Alvaro Cassinelli, Hiromasa Oku, Masatoshi Ishikawa : A pair of diopter adjustable eyeglasses for presbyopia vision correction, SPIE Optics + Photonics 2014 (San Diego, California, USA, 2014.08.18) / Proc. of SPIE, Vol.9193, 91931G-1 (poster) [doi:10.1117/12.2061659]

  • Lihui Wang, Hiromasa Oku, Masatoshi Ishikawa : Adaptive achromatic doublet design by double variable-focus lenses, SPIE Optics + Photonics 2014 (San Diego, California, USA, 2014.08.18) / Proc. of SPIE, Vol. 9193, 91930O-1 (Oral) [doi:10.1117/12.2061203]

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