Hisanari Otsu

Short Bio

Hisanari Otsu is a Ph.D. student in the Department of Creative Informatics at The University of Tokyo, supervised by Toshiya Hachisuka. His research interests are physically based rendering and light transport simulation, especially using Markov chain Monte Carlo algorithms.

Research Interest

  • Physically based rendering
  • Light transport simulation


  • Jun. 2017: Updated website
  • Apr. 2017: I have a paper accepted to SIGGRAPH 2017!


  • Supervised Learning of How to Blend Light Transport Simulations

    Hisanari Otsu, Shinichi Kinuwaki, Toshiya Hachisuka

    Proceedings of the MCQMC 2016 (Conditionally accepted)

  • Fusing State Spaces for Markov Chain Monte Carlo Rendering

    Hisanari Otsu, Anton S. Kaplanyan, Johannes Hanika, Carsten Dachsbacher, Toshiya Hachisuka

    SIGGRAPH 2017

    [DOI] [PDF] [Project]

  • Robust Light Transport Simulation via Metropolized Bidirectional Estimators

    Martin Šik, Hisanari Otsu, Toshiya Hachisuka, Jaroslav Křivánek

    SIGGRAPH Asia 2016

    [DOI] [PDF]

  • Replica Exchange Light Transport on Relaxed Distributions

    Hisanari Otsu, Yonghao Yue, Qiming Hou, Kei Iwasaki, Yoshinori Dobashi, Tomoyuki Nishita

    SIGGRAPH 2013 Posters

    [DOI] [PDF]


  • Hisanari Otsu. Optimized Path Sampling Strategy Selection for Trans-Dimensional Mutation in Metropolis Light Transport. Master’s Thesis, The University of Tokyo. 2015.
  • Hisanari Otsu. A Study on Global Illuination Computation Using Replica Exchange Light Transport in Locality-Relaxed Light Path Space, Bachelor’s Thesis, The University of Tokyo. 2013.


  • Super Creator, Information-technology Promotion Agency, Japan (IPA), 2016
  • Excellent research and presentation award (GCAD Award), Information Processing Society of Japan, 2015
  • Dean’s award, Department of Information Science, The University of Tokyo, 2013
  • Best Paper Award, Art Science Forum 2013 (domestic), 2013

Personal Projects