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Address:

1398 Shimami-cho, Kita-ku, Niigata-shi 950-3198 Japan

Degrees

• PhD, Information Processing (2006) Tokyo Institute of Technology (now known as Institute of Science Tokyo), Japan

• MS, Information Engineering (1995) Niigata University, Japan

• BS, Information Engineering (1993) Niigata University, Japan

Professional Appointments

• Oct. 2015 –: Professor, Dept. of Orthoptics and Visual Sciences, Faculty of Medical Technology, Niigata University of Health and Welfare, Japan.

• Dec. 2013 – Sept. 2015: Postdoctoral Research Associate, Faculty of Computer Science and Media Technology, Gjøvik University College (now known as Norwegian University of Science and Technology (NTNU), Gjøvik), Norway.

• Aug. 2013 – Nov. 2013: Technical Staff, Brain Science Institute (now known as Center for Brain Science), Riken, Japan.

• Aug. 2010 – Aug. 2013: Postdoctoral Research Associate, Center of Physics, University of Minho, Portugal.

• Apr. 2009 – Jul. 2010: Postdoctoral Research Associate and Adjunct Lecturer, Dept. of Information Engineering, Mie University, Japan.

• May 2006 – Mar. 2009: Postdoctoral Research Associate, Center for Visual Science, University of Rochester, USA.

• Apr. 2005 – May 2006: Research Assistant / Postdoctoral Research Associate, Dept. of Computer Science, Graduate School of Information Science and Engineering, Tokyo Institute of Technology (now known as Institute of Science Tokyo), Japan.

• Apr. 2003 – Mar. 2005: Research Assistant, Photonics Nanodevice Integration Engineering, 21st Century Center of Excellence Program, Tokyo Institute of Technology (now known as Institute of Science Tokyo), Japan.

• Apr. 2002 – Mar. 2006: PhD Candidate, Dept. of Information Processing, Interdisciplinary Graduate School of Science and Engineering, Tokyo Institute of Technology  (now known as Institute of Science Tokyo), Japan.

• Apr. 1999 – Mar. 2000: Visiting Researcher, Imaging Science and Engineering Laboratories, Tokyo Institute of Technology (now known as Institute of Science Tokyo), Japan.

• Apr. 1997 – Mar. 1998: Visiting Researcher, Dept. of Information and Image Science, Chiba University, Japan.

• Apr. 1995 – Mar. 2002: Technical Official and Research Director, Printing Bureau, Ministry of Finance, Japan.
  (Successful Candidate of the Japanese Class I Civil Service Examination in Computer Science, 1994, National Personnel Authority, Japan)

Publications

Book Chapters

• Masuda, O., Temporal Characteristics. in Vision Society of Japan (Ed.), Illustrated Encyclopedia of Vision, 28-30, Asakura Publishing, Tokyo, 2022 (In Japanese).

Original Papers

• Ishiuchi, J., Kai, S., Murase, H., Masuda, O., Furukawa, T., Design and development of a smart fashion accessory - Communicating positive facial expressions hidden by face masks. International Journal of Affective Engineering, 22(1), 35-46, 2023.

• Tatara, S., Masuda, O.,  and Maeda, F., Spectral transmittance and luminance factor of the binocular separation glasses for stereotests using random-dot stereograms. Optical Review, 29, 354-356, 2022.

• Ubukata, H., Maeda, F., Masuda, O., Kobayashi, A., Kani, K., Abe, H., Development of a training system for manual kinetic perimetry using the Goldmann perimeter. Niigata Journal of Health and Welfare, 18(1), 10-17, 2018. 

• Masuda, O., Pedersen, M., and Hardeberg, J. Y., Features contributing to the genuineness of portraits on banknotes, Journal of Print and Media Technology Research, 5(1), 53-59, 2016. [PDF]

• Masuda, O., Pedersen, M., and Hardeberg, J. Y., Effects of awareness to security features on the confidence in banknotes, Journal of Print and Media Technology Research, 4(2), 103-110, 2015. [PDF]

• Nascimento, S. M. C. and Masuda, O., Best lighting for visual appreciation of artistic paintings—experiments with real paintings and real illumination, Journal of the Optical Society of America A, 31(4), A214-A219, 2014

• Perales, E., Linhares, J. M. M., Masuda, O., Martínez-Verdú, F. M., and Nascimento, S. M. C., Effects of high-color-discrimination capability spectra on color-deficient vision, Journal of the Optical Society of America A, 30(9), 1780-1786, 2013.

• Masuda, O. and Nascimento, S. M. C., Best lighting for naturalness and preference, Journal of Vision, 13(7):4, 1-14, 2013.

• Luzón-González, R, Nascimento, S. M. C., Masuda, O., and Romero, J., Chromatic losses in natural scenes with viewing distance, Color Research and Application, 39(4), 341-346, 2014.

• Masuda, O. and Nascimento, S. M. C., Lighting spectrum to maximize colorfulness, Optics Letters, 37(3), 407-409, 2012

• Nascimento, S. M. C. and Masuda, O., Psychophysical optimization of lighting spectra for naturalness, preference and chromatic diversity, Journal of the Optical Society of America A, 29(2), A144-151, 2012.

• Masuda, O. and Uchikawa, K., Temporal integration of the chromatic channels in peripheral vision, Vision Research, 49(6), 622-636, 2009.

• Masuda, O. and Uchikawa, K., Temporal summation properties of double pulse lights in peripheral retina, Journal of the Institute of Image Information and Television Engineers, 59(12), 1859-1861, 2005. (in Japanese)

• Masuda, O. and Uchikawa, K., Effects of the foveal fixation and the peripheral visual field on detection threshold of pulse stimulus, Vision (the Journal of the Vision Society of Japan), 17(3), 159-167, 2005. (in Japanese)

International Conferences

• Suzuki, M., Yaguchi, A., Nakatsue, T., Masuda, O., Uchikawa, K., ipRGCs contribute to glare sensation of hight-intensity lights, Perception, 50(1S), 63, 2021. (Aug 2021, The 43rd European Conference on Visual Perception (ECVP) 2021, Online)

• Tsuzuki, Y., Masuda, O., Hasegawa, M., A study on dot pattern for 3D drawing using digital pen. (Aug. 2019, The 6th IIEEJ International Conference on Image Electronics and Visual Computing, Kuta Bali, Indonesia)

• Ubukata, H., Maeda, F., Masuda, O., Kobayashi, A., Kani, K., Abe, H., Evaluation of the results of manual kinetic perimetry using a training system for the Goldmann perimeter, Investigative Ophthalmology & Visual Science, 60(9), 4383, 2019. (Apr. 2019, Association for Research in Vision and Ophthalmology Annual Meeting, Vancouver, Canada)

• Ubukata, H., Maeda, F., Masuda, O., Shindo, M., Kawachi, R., Kobayashi, A., Kani, K., Abe, H., Development of a training system for the measurement of manual kinetic perimetry using the Goldmann perimeter, [9]. (Sept. 2016, 22nd International Visual Field Imaging Symposium, Udine, Italy)

• Masuda, O., Pedersen, M., Hardeberg, J. Y., Factors affecting the perceived genuineness of security documents, [56.3037], Journal of Vision, 16(12), 1176. (May 2016, Vision Sciences Society, St. Pete Beach, FL, USA)

• Nascimento, S. M. C. and Masuda, O., Best lighting for visual appreciation of artistic paintings: experiments with real paintings and real illumination, Abstract book of ICVS 2013, 41, 2013. (Jul. 2013, 22nd Symposium of the International Colour Vision Society, Winchester, UK)

• Masuda, O. and Nascimento, S. M. C., Comparing the visual effects of real light sources on real complex scenes with their simulations on computer screens, Abstract book of ICVS 2013, 129, 2013. (Jul. 2013, 22nd Symposium of the International Colour Vision Society, Winchester, UK)

• Masuda, O. and Nascimento, S. M. C., Psychophysical assessment of best lighting for naturalness and preference by monitor viewing of commercial food counters, Proceedings of AIC Colour 2013, 1, 69-72, 2013. (Jul. 2013, 12th Congress of the International Colour Association, Newcastle upon Tyne, UK)

• Nascimento, S. M. C. and Masuda, O., Visual effects of real light sources of arbitrary spectra on real objects and scenes, Proceedings of AIC Colour 2013, 1, 287-290, 2013. (Jul. 2013, 12th Congress of the International Colour Association, Newcastle upon Tyne, UK)

• Masuda. O. and Nascimento, S. M. C, Estimation of the best illumination for commercial food counters, [16.519], Journal of Vision, 12(9), 65. (May 2012, Vision Sciences Society, Naples, FL, USA)

• Nascimento, S. M. C and Masuda, O., Influence of complexity and memory color on naturalness judgements in color rendering, [43.448], Journal of Vision, 12(9), 866. (May 2012, Vision Sciences Society, Naples, FL, USA)

• Masuda, O., Correia, H. T., Linhares, J. M. M., and Nascimento, S. M. C., Psychophysical estimation of the best lighting for commercial counters of fruits and vegetables, (May 2012, 6th European Conference on Colour in Graphics, Imaging, and Vision, Amsterdam, the Netherlands)

• Masuda, O., Linhares, J. M. M., Felgueiras, P. E. R., and Nascimento, S. M. C., Optimizing lighting spectra for naturalness and chromatic diversity, [26.370], Journal of Vision, 11(11), 350. (May, 2011, Vision Sciences Society, Naples, FL, USA)

• Masuda, O., Linhares, J. M. M., Felgueiras, P. E. R., and Nascimento, S. M. C., Lighting spectra for the maximum colorfulness, Proceedings of SPIE, 8001, 800103, 2011. (May 2011, International Conference on Applications of Optics and Photonics, Braga, Portugal)

• Masuda, O., Hofer, H., Carroll, J., and Williams, D. R., Arrangement of the trichromatic cone mosaic in peripheral retina of a color-normal and a deutan carrier, [T5]. (Oct. 2008, Optical Society of America, Fall Vision Meeting, Rochester, NY, USA)

• Masuda, O., Hofer, H., Carroll, J., and Williams, D. R., Arrangement of the human trichromatic cone mosaic in peripheral retina, [3832-A375], Investigative Ophthalmology & Visual Science, 49(13), 3832, 2008. (Apr. 2008, Association for Research in Vision and Ophthalmology Annual Meeting, Fort Lauderdale, FL, USA)

• Masuda, O. and Uchikawa, K., Temporal summation of the double flashes of chromatic spatial pattern in the peripheral retina, Progress in Biochemistry and Biophysics, 31(suppl.), [OD-5], 53, 2004. (Nov. 2004, Asian Conference on Vision, Chongqing, China)

• Masuda, O., Uchikawa, K., and Yokoi, K., Effects of retinal eccentricity on the temporal summation of double flashes, Journal of Vision, 3(12), 63a, 2003. (Oct. 2003, Optical Society of America, Fall Vision Meeting, Tucson, AZ, USA)

• Masuda, O., Uchikawa, K., and Yokoi, K., Effects of cone contrast on chromatic assimilation, Proceedings of the Second Asian Conference on Vision, [P-60], 85, 2002. (Jul. 2002, Asian Conference on Vision, Busan, South Korea)

Honors and Awards

• Apr. 2008: Joseph M. and Eula C. Lawrence Travel Scholarship. (The ARVO Foundation for Eye Research / Retina Research Foundation)

• Dec. 2004: Technical Achievement Award. (The Institute of Image Information and Television Engineers)

• Apr. 2004: Great Contributor to the Doctoral Students Forum. (Photonics Nanodevice Integration Engineering, 21st Century Center of Excellence Program, Tokyo Institute of Technology (now known as Institute of Science Tokyo), Japan)

• Nov. 1989: Niigata University Scholarship. (Niigata University, Japan)

• Apr. 1989 – Mar. 1993: Mitsuke City Scholarship. (Mitsuke City, Niigata, Japan)

Media Appearance

• Hovland, P., Spennende oppdrag for HiG, Oppland Arbeiderblad, Friday 31 Oct. 2014, pp. 2-3.

Academic Pedigree

• H. L. F. von Helmholtz (1821 - 1894) → W. M. Wundt (1832 - 1920) → E. B. Titchener (1867 - 1927) → J. P. Nafe (1888 - 1970) → C. H. Graham (1906 - 1971) → L. A. Riggs (1912 - 2008) → R. M. Boynton (1924 - 2006) → M. Ikeda → K. Uchikawa → O. Masuda

• E. D. Adrian (1889 - 1977) → W. A. H. Rushton (1901 - 1980) → D. I. A. MacLeod → D. R. Williams → O. Masuda

• W. D. Wright (1906 - 1997) → D. H. Foster → S. M. C. Nascimento → O. Masuda

• F. J. M. Schmitt (1949 - 2008) → J. Y. Hardeberg → O. Masuda