Publication

2024

M. Hikichi, K. Iwasaki, Separation of Reflection Components for Measured Spectral BRDFs, Graphics Interface 2024, Article No. 20, pp. 1-9, 2024.
K. Iwasaki, Y. Dobashi, A Non-parametric Factor Representation and Editing for Anisotropic Spectral Measured BRDFs, Graphics Interface 2024, Article No. 18, pp. 1-10, 2024.
M. Sato, K. Iwasaki, Two-stage Optimization for Fitting Parameters of Measured Isotropic Spectral BRDFs, Nicograph International 2024, pp. 36-40, 2024 (Honorable Mention Award).

2023

Y. Dobashi, N. Ishikawa, K. Iwasaki, Efficient Visualization of Light Pollution for the Night Sky, ACM Transactions on Graphics (Proc. of SIGGRAPH ASIA 2023), Vol. 42, No. 6, pp. 219:1–219:11, 2023.

2022

K. Nabata, K. Iwasaki, Adaptive Irradiance Sampling for Many-Light Rendering of Subsurface Scattering, IEEE Transactions on Visualizations and Computer Graphics, Vol. 28, No. 10, pp. 3324–3335, 2022.
Y. Shibaike, K, Iwasaki, Optical Parameter Estimation for Hair and Fur using Differentiable Rendering, ACM SIGGRAPH ASIA 2022 Technical Communications, pp. 3:1–3:4, 2022
S. Fuji, S. Sato, K. Iwasaki, Y. Dobashi, S. Gao, Z. Tang, Rendering of Scratched Transparent Materials using Precomputed SV-BSDFs, ACM SIGGRAPH 2022 Poster, pp. 42:1–42:2, 2022.

2021

H. Okuno, K. Iwasaki, Binary Space Partitioning Visibility Tree for Polygonal and Environment Light Rendering, The Visual Computer (CGI2021), Vol. 29, No. 7, pp. 2499–2511, 2021.

2020

K. Nabata, K. Iwasaki, Y. Dobashi, Two-stage Resampling for Bidirectional Path Tracing using Multiple Light Sub-paths, Computer Graphics Forum (PG2020), Vol. 39, No. 7, pp. 219–230, 2020.
N. Podee, N. Max, K. Iwasaki, Y. Dobashi, Temporal and Spatial Anti-aliasing for Rendering Reflections on Water Waves, Computational Visual Media, Vol. 7, pp. 201–215, 2021.

2019

H. Sakai, K. Nabata, S. Yasuaki, K. Iwasaki, A Method for Estimating the Errors in Many-light Rendering with Supersampling, Computational Visual Media, Vol. 5, pp. 1–10, 2019.
N. Podee, N. Max, K. Iwasaki, Y. Dobashi, Temporal and Spatial Anti-aliasing for Rendering Reflection on a Water Surface, SIGGRAPH 2019 Posters, pp. 50:1–50:2, 2019.
H. Okuno, K. Iwasaki, Binary Space Partitioning Visibility Tree for Polygonal Light Rendering, SIGGRAPH ASIA 2019 Technical Briefs, pp. 79–82, 2019.
K. Nabata, K. Iwasaki, Y. Dobashi, Resampling-aware Weighting Functions for Bidirectional Path Tracing using Multiple Light Sub-paths, ACM Transactions on Graphics, Vol. 39, No. 2, Article No. 15, pp. 15:1–15:11, 2020.

2018

K. Sakurai, Y. Dobashi, K. Iwasaki, T. Nishita, Fabricating Reflectors for Displaying Multiple Images, ACM Transactions on Graphics (SIGGRAPH2018), Vol. 37, No. 4, pp. 158:1–158:10, 2018.
J. Tsuruga, K. Iwasaki, Sawtooth Cycle Revisited, Computer Animation and Virtual Worlds (CASA2018), Vol. 29, No. 3–4, pages e1836, 2018.
H. Sakai, K. Nabata, S. Yasuaki, K. Iwasaki, Error Estimation for Many-light Rendering with Supersampling, SIGGRAPH ASIA 2018 Technical Briefs, pp. 14:1–14:4, 2018.

2017

T. Yamakawa, Y. Dobashi, M. Okabe, K. Iwasaki, T. Yamamoto, Computer Simulation of Furniture Layout when Moving from One House to Another, Proc. of SCCG, pp. 4:1–4:8, 2017.
K. Iwasaki, Y. Dobashi, M. Okabe, Example-based Synthesis of Three-dimensional Clouds from Photographs, Proc. of Computer Graphics International (short paper), pp. 28:1–28:6, 2017.
Y. Dobashi, K. Iwasaki, M. Okabe, T. Ijiri, H. Todo, Inverse Appearance Modeling of Interwoven Cloth, The Visual Computer, Vol. 35, No. 2, pp. 175–190, 2017.

2016

Y. Dobashi, K. Iwasaki, Y. Yue, T. Nishita, Visual Simulation of Clouds, Visual Informatics, Vol. 1, No. 1, pp. 1–8, 2017.
K. Nabata, K. Iwasaki, Y. Dobashi, T. Nishita, An Error Estimation Framework for Many-light Rendering, Computer Graphics Forum (Proc. of Pacific Graphics 2016), Vol. 35, No. 7, pp. 431–439, 2016.
Y. Dobashi, T. Ijiri, H. Todo, K. Iwasaki, M. Okabe, S. Nishimura, Measuring Microstructures Using Confocal Laser-Scanning Microscopy for Estimating Surface Roughness, SIGGRAPH 2016 Poster, pages 28:1, 2016.
R. Enotani, S. Yasuaki, K. Iwasaki, Y. Dobashi, T. Nishita, Importance Caching for Homogeneous Participating Media, IEVC2017.
P. Namo, K. Iwasaki, Y. Dobashi, Efficient Adaptive GPU Path Tracing, IEVC2017.

2015

S. Sato, Y. Dobashi, Y. Yue, K. Iwasaki, T. Nishita, Incompressibility-Preserving Deformation for Fluid Flows Using Vector Potentials, The Visual Computer (Proc. of CGI 2015), Vol. 31, No. 6–8, pp. 959–965, 2015.
Y. Dobashi, Y. Shibukawa, M. Tada, S. Sato, K. Iwasaki, T. Yamamoto, An Interactive Editing System for Visual Appearances of Fire and Explosions, EUROGRAPHICS 2015 short paper, pp. 49–52, 2015.
H. Yoshida, K. Nabata, K. Iwasaki, Y. Dobashi, T. Nishita, Adaptive Importance Caching for Many-light Rendering, Journal of WSCG, Vol. 23, No. 1, pp. 65–72, 2015.
T. Ishikawa, Y. Yue, T. Watanabe, K. Iwasaki, Y. Dobashi, M. Kakimoto, K. Kondo, T. Nishita, Visual Simulation of Glazed Frost Using Hybrid Heat Calculation, IIEEJ Transactions on Image Electronics and Visual Computing Vol.3 No.2, pp.136–142, 2015.

2014

K. Iwasaki, K. Mizutani, Y. Dobashi, T. Nishita, Interactive Cloth Rendering of Microcylinder Appearance Model under Environment Lighting, Computer Graphics Forum (Eurographics 2014), Vol. 33, No. 2, pp.333–340, 2014.
S. Sato, Y. Dobashi, K. Iwasaki. H. Ochiai, T. Yamamoto, T. Nishita, An Optimization Approach for Designing Fluid Flow Fields, Computer Graphics International 2014, short paper.
Y. Yue, K. Iwasaki, B.-Y. Chen, Y. Dobashi, T. Nishita, Poisson-based Continuous Surface Generation for Goal-based Caustics, ACM Transactions on Graphics, Vol. 33, No. 3, pp. 31:1–31:7, 2014 (presented at SIGGRAPH 2014).
S. Sato, Y. Dobashi, K. Iwasaki, H. Ochiai, T. Yamamoto, T. Nishita, Generating Various Flow Fields using Principal Component Analysis, SIGGRAPH 2014 posteri, pages. 9:1, 2014.
T. Ishikawa, Y. Yue, T. Watanabe, K. Iwasaki, Y. Dobashi, M. Kakimoto, K. Kondo, T. Nishita, Visual Simulation of Glazed Frost Taking into Account Supercooled State, IEVC2014, 2014.
S. Sato, Y. Dobashi, K. Iwasaki, H. Ochiai, T. Yamamoto, T. Nishita, Deformation of 2D Flow Fields Using Stream Functions, SIGGRAPH ASIA Technical Brief 2014, pp. 4:1–4:4, 2014.
K. Mizutani, K. Iwasaki, Importance Sampling for Cloth Rendering under Environment Light, Symposium Mathematical Progress in Expressive Image Synthesis (MEIS) 2014, pp. 81–88, 2014.

2013

T. Ishikawa, Y. Yue, K. Iwasaki, Y. Dobashi, T. Nishita, Visual Simulation of Magnetic Fluids Using Dynamic Displacement Mapping for Spike Shapes, IIEEJ Transactions on Image Electronics and Visual Computing, Vol.1, No.1, pp.51-57, 2013.
S. Sato, Y. Dobashi, T. Yamamoto, K. Iwasaki, H. Ochiai, Generating Flow Fields Variations by Modulating Amplitude and Resizing Simulation Space, SIGGRAPH ASIA 2013 Technical Briefs, pp. 13:1–13:4, 2013.
K. Nabata, K. Iwasaki, Y. Dobashi, T. Nishita, Efficient Divide-And-Conquer Ray Tracing using Ray Sampling, High-Performance Graphics 2013, pp. 129–135, 2013.
T. Ishikawa, Y. Yue, T. Watanabe, K. Iwasaki, Y. Dobashi, M. Kakimoto, K. Kondo, T. Nishita, Visual Simulation of Glazed Frost, SIGGRAPH 2013 Poster, pages 14:1, 2013.
H. Otsu, Y. Yue, Q. Hou, K. Iwasaki, Y. Dobashi, T. Nishita, Replica Exchange Light Transport on Relaxed Distributions, SIGGRAPH 2013 Poster, pages 106:1, 2013.
M. Shinya, Y. Dobashi, K. Iwasaki, M. Shiraishi, T. Nishita, A Simplified Plane-parallel Scattering Model for Rendering Densely Distributed Objects such as Foliage, Journal of Information Processing, Vol. 21, No. 2, pp. 349-357, 2013.
T. Ishikawa, Y. Yue, K. Iwasaki, Y. Dobashi, T. Nishita, Visual Simulation of Magnetic Fluid Using a Procedural Approach for Spikes Shape, Computer Vision, Imaging, and Computer Graphics. Theory and Application, pp. 112-126, 2013.

2012

K. Iwasaki, Y. Dobashi, T. Nishita, Interactive Bi-scale Editing of Highly Glossy Materials, ACM Transactions on Graphics (SIGGRAPH ASIA 2012), Vol. 31, No. 6, pp. 144:1–144:7, 2012.
K. Iwasaki, W. Furuya, Y. Dobashi, T. Nishita, Real-time Rendering of Dynamic Scenes under All-frequency Lighting using Integral Spherical Gaussian, Computer Graphics Forum(Eurographics 2012), Vol. 31, No. 2, pp. 727-734, 2012.
Y. Yue, K. Iwasaki, B.Y. Chen, Y. Dobashi, T. Nishita, Pixel Art with Refracted Light by Rearrangeable Sticks, Computer Graphics Forum(Eurographics 2012), Vol. 31, No.2, pp. 575-582, 2012.
T. Nishino, K. Iwasaki, Y. Dobashi, T. Nishita, Visual Simulation of Freezing Ice with Air Bubbles, SIGGRAPH ASIA 2012, Technical Brief, pp. 1:1–1:4, 2012.
T. Ishikawa, Y. Yue, K. Iwasaki, Y. Dobashi, T. Nishita, “Visual Simulation of Magnetic Fluid Taking into Account Dynamic Deformation in Spikes”, IEVC2012, 2012.
T. Ishikawa, Y. Yue, K. Iwasaki, Y. Dobashi, T. Nishita, “Visual Simulation of Magnetic Fluids”, GRAPP 2012, pp. 319–327, 2012.

2011

W. Furuya, K. Iwasaki, Y. Dobashi, T. Nishita, An Efficient Calculation Method of Spherical Signed Distance Functions for Real-time Rendering, ACM SIGGRAPH ASIA 2011 Technical Sketches, pp. 12:1–12:2, 2011.
K. Iwasaki, T. Nishino, Y. Dobashi, Real-time Rendering of Endless Cloud Animation, Proc. Pacific Graphics 2011 short paper, pp. 73-76, 2011.
Y. Yue, K. Iwasaki, B.-Y. Chen, Y.Dobashi, T. Nishita, Toward Optimal Space Partitioning for Unbiased, Adaptive Free Path Sampling of Inhomogeneous Participating Media, Computer Graphics Forum, Vol. 30, No. 7, pp. 1911–1919, 2011.
T. Ishikawa, Y. Yue, K. Iwasaki, Y. Dobashi, T. Nishita, Modeling of Aurora Borealis Using the Observed Data, Proc. of Spring Conference on Computer Graphics, pp. 13–16, 2011.

2010

Y. Yue, K. Iwasaki, B.-Y. Chen, Y.Dobashi, T. Nishita, Unbiased, Adaptive Stochastic Sampling for Rendering Inhomogeneous Participating Media, ACM Trans. on Graphics, Vol. 29, No. 5 (Proc. SIGGRAPH Asia 2010), pp. 17:1–17:8, 2010.
K. Iwasaki, H. Uchida, Y. Dobashi, T. Nishita, Fast Particle-based Visual Simulation of Ice Melting, Computer Graphics Forum (PG2010), Vol. 29, No. 7, pp. 2215–2223, 2010.
M. Shinya, M. Shiraishi, Y. Dobashi, K. Iwasaki, T. Nishita, A Simplified Plane-Parallel Scattering Model and its Application to Hair Rendering, Proc. Pacific Graphics 2010, pp. 85-92, 2010.
K. Iwasaki, Y. Dobashi, T. Nishita, Interactive Lighting and Material Design System for Cyberworlds, CW2010, pp. 331–337.
Y. Tanigaki, K. Iwasaki, Real-time Rendering of Oceans Considering Multiple Scattering of Light, IEVC2010.

2009

Y. Yue, K. Iwasaki, B.Y.Chen, Y. Dobashi, T.Nishita, Interactive Rendering of Interior Scenes with Dynamic Environment Illumination, Computer Graphics Forum, Vol. 28, No. 7, pp. 1935–1944, 2009.
K. Iwasaki, F. Yoshimoto, Y. Dobashi, T. Nishita, Inverse Problem Approach To BRDF Modeling, Proc. of GRAPP 2009, pp. 129–136, 2009.

2008

K. Iwasaki, Y. Dobashi, F. Yoshimoto, T. Nishita, GPU-based Rendering of Point-Sampled Water Surfaces, The Visual Computer, Vol.24, No.2, pp. 77–86, 2008.

2007

Y. Yue, K. Iwasaki, Y. Dobashi, T. Nishita, Global Illumination for Interactive Lighting Design using Light Paths Precomputation and Hierarchical Histogram Estimation, Proc. of Pacific Graphics 2007, pp. 87-96, 2007.
Y. Yue, K. Iwasaki, Y. Dobashi, T. Nishita, Global Illumination using Precomputed Light Paths for Interactive Light Condition Manipulation, SIGGRAPH2007 sketch, 2007.
K. Iwasaki, Y. Dobashi, F. Yoshimoto, T. Nishita, Precomputed Radiance Transfer for Dynamic Scenes Taking into Account Light Interreflection, Proc. of Eurographics Symposium on Rendering 2007, pp. 35–44, 2007.

2006

K. Iwasaki, Y. Dobashi, N. Tamura, H. Johan, F. Yoshimoto, T. Nishita, Precomputed Radiance Transfer for Dynamic Scenes with Diffuse Interreflection, SIGGRAPH2006 sketch, pages 173, 2006.
K. Iwasaki, F. Yoshimoto, Y. Dobashi, T. Nishita, Real-time Rendering of Point-based Water Surfaces, Lecture Notes in Computer Science (Proc. of Computer Graphics International 2006), pp. 102–114. 2006.

2005

K. Iwasaki, F. Yoshimoto, Y. Dobashi, T. Nishita, A Fast Rendering Technique of Transparent Objects and Caustics, Proc. of CASA2005, pp. 165–170, 2005.
M. Oda, K. Iwasaki, S. Takagi, F. Yoshimoto, Fast Rendering Method for Point-sampled Translucent Geometry, Proc. of SIGGRAPH2005 Poster, 2005.
K. Iwasaki, F. Yoshimoto, Y. Dobashi, T. Nishita, A Method for Fast Rendering of Caustics from Refraction by Transparent Objects, IEICE Trans., Special Issue on CyberWorlds, Vol. E88-D, No. 5, pp. 904–911, 2005.
Y. Nakano, K. Tsukada, S. Takagi, K. Iwasaki, F. Yoshimoto, InCom: Support System for Informal Communication in 3D VirtualWorlds Generated from Common HTML Documents, IEICE Trans., Special Issue on CyberWorlds, Vol. E88-D, No. 5, pp. 872–879,2005.

2004

K. Iwasaki, K. Matsuzawa, T. Nishita, Real-time Rendering of Soap Bubbles Taking into Account Light Interference, Proc. of Computer Graphics International 2004, pp. 344-348, 2004.
K. Iwasaki, F. Yoshimoto, Y. Dobashi, T. Nishita, A Rapid Rendering Method for Caustics Arising from Refraction by Transparent Objects, Proc. of the 2004 International Conference on Cyberworlds (CW2004), pp. 39–44, 2004.
Y. Nakano, K. Tsukada, S. Takagi, K. Iwasaki, F. Yoshimoto, Support System for Informal Communication in 3D Web World, Proc. of the 2004 International Conference on Cyberworlds (CW2004), pp. 439–446, 2004.

2003

K. Iwasaki, Y.Dobashi, T. Nishita, A Fast Rendering Method for Refractive and Reflective Caustics, Computer Graphics Forum (Eurographics 2003) , Vol. 22, No. 3, pp. 515–522, 2003.

2002

K. Iwasaki, Y.Dobashi, T. Nishita, An Efficient Method for Rendering Underwater Optical Effects using Graphics Hardware, Computer Graphics Forum, Vol. 21, No. 4, pp. 701–711, 2002.

2001

K. Iwasaki, Y. Dobashi, T. Nishita, Efficient Rendering of Optical Effects within Water Using Graphics Hardware, Proc. of Pacific Graphics, pp. 374–383, 2001.