Hisanari Otsu

Short Bio

I am an assistant professor at Département d’informatique, Faculté des sciences, Université de Sherbrooke. My research interests are physically based rendering and light transport simulation, both offline and realtime.

Research Interest

  • Physically based rendering
  • Light transport simulation
  • Markov chain Monte Carlo rendering
  • High performance rendering

Publications

  • Regional Adaptive Metropolis Light Transport

    Hisanari Otsu, Killian Herveau, Johannes Hanika, Derek Nowrouzezahrai, Carsten Dachsbacher

    arXiv:2402.08273

    [DOI]

  • Out-of-the-loop Autotuning of Metropolis Light Transport with Reciprocal Probability Binning

    Killian Herveau, Hisanari Otsu, Carsten Dachsbacher

    Eurographics 2023 Short Paper

    [DOI] [PDF]

  • Portal-Based Path Perturbation for Metropolis Light Transport

    Hisanari Otsu, Johannes Hanika, Carsten Dachsbacher

    Vision, Modeling, and Visualization 2020

    [PDF] [Project]

  • Geometry-Aware Metropolis Light Transport

    Hisanari Otsu, Johannes Hanika, Toshiya Hachisuka, Carsten Dachsbacher

    SIGGRAPH Asia 2018

    [DOI] [PDF] [Project]

  • Reproducing Spectral Reflectances From Tristimulus Colours

    Hisanari Otsu, Masafumi Yamamoto, Toshiya Hachisuka

    Computer Graphics Forum

    [DOI] [PDF] [Project]

  • Supervised Learning of How to Blend Light Transport Simulations

    Hisanari Otsu, Shinichi Kinuwaki, Toshiya Hachisuka

    Proceedings of the MCQMC 2016

    [DOI] [PDF] [Project]

  • 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] [Project]

  • Replica Exchange Light Transport on Relaxed Distributions

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

    SIGGRAPH 2013 Posters

    [DOI] [PDF]

Thesis

  • Hisanari Otsu. Bridging Different Spaces in Light Transport Simulations. Ph.D. Thesis, The University of Tokyo. 2018. [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 Illumination Computation Using Replica Exchange Light Transport in Locality-Relaxed Light Path Space, Bachelor’s Thesis, The University of Tokyo. 2013.

Awards

  • 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

  • Lightmetrica : A research oriented renderer [Github]
  • Freestroke : 3D painting tool [Github]
  • minpt : A path tracer in 300 lines of C++ [Github]