Department of Computer Science (cs.au.dk)

me
Toshiya Hachisuka
Assistant Professor, Computer Graphics and Image Processing Group
toshiya_at_cs_au_dk
Pronunciation of my name: "Hachisuka" has silent "u" (e.g., "Ha-chee-ska"). "Toshiya" has stress on "To" (e.g., "Toe-she-ya").
I left Aarhus University as of June 30th, 2014. While the email address above will be active for a while, I recommend you to contact me at thachisuka_at_siggraph.org until the new contact information becomes available around August.

LATEST NEWS
FAQ
RESEARCH INTERESTS
TEAM
ALUMNI
TEACHING
PUBLICATIONS AND PRESENTATIONS
icon "Directional Dipole Model for Subsurface Scattering"   [slides]   [code]
J. R. Frisvad, T. Hachisuka, and T. K. Kjeldsen
ACM Transactions on Graphics, to appear, 2014
(Fully analytical BSSRDF that takes directions of light into account)
icon "Multiplexed Metropolis Light Transport"   [slides]   [code - mmlt]   [code - pssmlt]
T. Hachisuka, A. S. Kaplanyan, and C. Dachsbacher
ACM Transactions on Graphics (SIGGRAPH 2014), to appear, 2014
(Fusion of Markov chain Monte Carlo and multiple importance sampling)
icon "Unifying Points, Beams, and Paths in Volumetric Light Transport Simulation"   [slides]   [code]   [comparison]   [supplemental]
J. Křivánek, I. Georgiev, T. Hachisuka, P. Vévoda, M. Šik, D. Nowrouzezahrai, and W. Jarosz
ACM Transactions on Graphics (SIGGRAPH 2014), to appear, 2014
(Unified formulation of Monte Carlo path integration and photon density estimation with points and beams)
icon "At the Boundary between Light Transport Simulation and Computational Statistics"
T. Hachisuka
Talk in the special session: Advanced light transport simulation, MCQMC2014, 2014
(Overview of connections between some of my work in rendering and more general problems in computational statistics)
icon "State of the Art in Photon-Density Estimation"
T. Hachisuka and W. Jarosz (organizers) (check out the course website for the full list of speakers.)
SIGGRAPH Asia 2013 Courses, 2013
(Course on recent advancements in photon density estimation)
icon "Joint Importance Sampling of Low-Order Volumetric Scattering"   [comparison]   [slides]
I. Georgiev, J. Křivánek, T. Hachisuka, D. Nowrouzezahrai, and W. Jarosz
ACM Transactions on Graphics (SIGGRAPH Asia 2013), 2013
(Importance sampling of multiple geometry terms and phase functions in participating media)
icon "Robust Image Denoising using a Virtual Flash Image for Monte Carlo Ray Tracing"
B. Moon, J. Jun, J. Lee, K. Kim, T. Hachisuka, and S. Yoon
Computer Graphics Forum (Volume 32 Number 1), 2012
(Denoising method with a new image feature)
icon "A Path Space Extension for Robust Light Transport Simulation"   [supplemental]   [slides]   [code (you can essentially refer to SmallVCM. UPS \approx VCM) ]
T. Hachisuka, J. Pantaleoni, and H. W. Jensen
ACM Transactions on Graphics (SIGGRAPH Asia 2012), 2012
(Extended path integral formulation for Monte Carlo path integration and photon density estimation)
icon "Randomized Coherent Sampling for Reducing the Perceptual Error of Rendered Images"   [poster]
L. Staal and T. Hachisuka
SIGGRAPH 2012 Posters, 2012
(New uniform sampling method that reduces perceptual noise in Monte Carlo ray tracing)
icon "State of the Art in Photon-Density Estimation"
T. Hachisuka and W. Jarosz (organizers) (check out the course website for the full list of speakers.)
SIGGRAPH 2012 Courses, 2012
(Course on recent advancements in photon density estimation)
icon "Robust Adaptive Photon Tracing using Photon Path Visibility"   [slides]
T. Hachisuka and H. W. Jensen
ACM Transactions on Graphics (Volume 30 Issue 5, presented at SIGGRAPH 2013), 2011
(Adaptive Markov chain Monte Carlo sampling for photon tracing with a simple target distribution)
icon "A Progressive Error Estimation Framework for Photon Density Estimation"
T. Hachisuka, W. Jarosz, and H. W. Jensen
ACM Transactions on Graphics (SIGGRAPH Asia 2010), 2010
(Full paper of the talk at SIGGRAPH 2010)
icon "Parallel Progressive Photon Mapping on GPUs"   [code]   [slides]
T. Hachisuka and H. W. Jensen
SIGGRAPH Asia 2010 Technical Sketches, 2010
(Simple and parallel range-query algorithm with randomization)
icon "An Error Estimation Framework for Photon Density Estimation"   [slides]
T. Hachisuka, W. Jarosz, and H. W. Jensen
SIGGRAPH 2010 Talks: Rendering Intangibles, 2010
(Error estimation for progressive photon density estimation)
icon "Stochastic Progressive Photon Mapping"   [code]   [data0]   [data1]
T. Hachisuka and H. W. Jensen
ACM Transactions on Graphics (SIGGRAPH Asia 2009), 2009
(First progressive average density estimator for distribution effects)
icon "An Empirical BSSRDF Model"
C. Donner, J. Lawrence, R. Ramamoorthi, T. Hachisuka, H. W. Jensen, and S. Nayar
ACM Transactions on Graphics (SIGGRAPH 2009), 2009
(Precomputed BSSRDFs for moderately scattering media)
icon "Progressive Photon Mapping"   [code]   [code with comments]   [data0]   [data1]
T. Hachisuka, S. Ogaki, and H. W. Jensen
ACM Transactions on Graphics (SIGGRAPH Asia 2008), 2008
(New progressive density estimator for light transport simulation)
icon "Multidimensional Adaptive Sampling and Reconstruction for Ray Tracing"   [slides]   [code]   [data0]   [data1]
T. Hachisuka, W. Jarosz, R. P. Weistroffer, K. Dale, G. Humphreys, M. Zwicker, and H. W. Jensen
ACM Transactions on Graphics (SIGGRAPH 2008), 2008
(Adaptive sampling and reconstruction in the random number space)
icon "Combined Lagrangian-Eulerian Approach for Accurate Advection"   [poster]   [code]
T. Hachisuka
SIGGRAPH 2005 Posters (2nd Place in SRC:Undergraduate division at SIGGRAPH), 2005
(Advection equation solver using mapping functions)
icon "High-Quality Global Illumination Rendering Using Rasterization"   [demo]
T. Hachisuka
GPU Gems 2: Programming Techniques for High Performance Graphics and General-Purpose Computation (Chapter 38), 2005
(Applicaton of the poster at SIGGRAPH 2004)
icon "Final Gathering on GPU"   [poster]
T. Hachisuka
GP2, ACM Workshop on General Purpose Computing on Graphics Processors (also presented at SIGGRAPH 2004 Posters), 2004
(Rasterization-based final gathering)
NOTES AND TECHNICAL REPORTS
icon "Five Common Misconceptions about Bias in Light Transport Simulation"
T. Hachisuka
Manuscript, November 2013
(Notes on five common misconceptions on bias in rendering.)
icon "Directional Dipole for Subsurface Scattering in Translucent Materials"   [slides]
J. R. Frisvad, T. Hachisuka, and T. K. Kjeldsen
Manuscript, August 2013
(Analytical BSSRDF that takes directions of light into account.)
icon "A Path Space Extension for Robust Light Transport Simulation"
T. Hachisuka, J. Pantaleoni, and H. W. Jensen
NVIDIA Technical Report NVR-2012-001, April 2012
(Unified sampling framework for Monte Carlo path integration and photon density estimation.)
icon "Ray Tracing on Graphics Hardware"
T. Hachisuka
Research Exam, University of California at San Diego, 2009
(Comparative studies of GPU ray tracing algorithms.)
icon "Generalized Polarization Ray Tracing using a Monte-Carlo Method"
T. Hachisuka
Final project in CSE 272, University of California at San Diego, 2007
(Monte Carlo formulation of polarization effects.)
DISSERTATION AND THESIS
icon "Robust Light Transport Simulation using Progressive Density Estimation"
T. Hachisuka (Advisor: Prof. Henrik Wann Jensen)
Dissertation for Doctor of Philosophy, University of California at San Diego, 2011
(Light transport simulation framework based on progressive density estimation. )
icon "Advection Equation Solver using Mapping Functions"
T. Hachisuka (Advisor: Prof. Seiichi Koshizuka)
Thesis for Bachelor of Engineering, The University of Tokyo, 2006
(Formulation of the advection equation as mapping.)
EDUCATION WORK EXPERIENCE HONORS AND AWARDS RESEARCH FUNDING MISCELLANEOUS THINGS TIPS AND JOKES