publication

2018

• K. Sakurai, Y. Dobashi, K. Iwasaki, T. Nishita, Fabricating Reflectors for Displaying Multiple Images, ACM Transactions on Graphics (SIGGRAPH2018), Vol. 37, No. 4, 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 Brief, 2018.

2017

• T. Yamakawa, Y. Dobashi, M. Okabe, K. Iwasaki, T. Yamamoto, Computer Simulation of Furniture Layout when Moving from One House to Another, SCCG 2017.
• K. Iwasaki, Y. Dobashi, M. Okabe, Example-based Synthesis of Three-dimensional Clouds from Photographs, CGI 2017, short paper, Article No. 28, 2017.
• Y. Dobashi, K. Iwasaki, M. Okabe, T. Ijiri, H. Todo, Inverse appearance modeling of interwoven cloth, The Visual Computer, pp. 1-16, 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.
• R. Enotani, S. Yasuaki, K. Iwasaki, Y. Dobashi, T. Nishita, Importance Caching for Homogeneous Participating Media, IEVC2017. (Best Paper Award)
• 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, 2015/06.
• 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, 2015/05.
• 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 (Best Paper Award).

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 poster.
• T. Ishikawa, Y. Yue, T. Watanabe, K. Iwasaki, Y. Dobashi, M. Kakimoto, K. Kondo, T. Nishita, Visual Simulation of Glazed Frost Taking into Accoun Supercooled State, IEVC2014, 2014, (Best Paper Award).
• 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, Article No. 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, 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. (acceptance ratio 34%, 15/44)
• T. Ishikawa, Y. Yue, T. Watanabe, K. Iwasaki, Y. Dobashi, M. Kakimoto, K. Kondo, T. Nishita, Visual Simulation of Glazed Frost, SIGGRAPH 2013 Poster.
• H. Otsu, Y. Yue, Q. Hou, K. Iwasaki, Y. Dobashi, T. Nishita, Replica Exchange Light Transport on Relaxed Distributions, SIGGRAPH 2013 Poster.
• 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.

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, 144:1-144:7, 2012. (acceptance ratio 24%, 77/326)
• 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. (acceptance ratio 25% 66/260)
• 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. (acceptance ratio 25% 66/260)
• T. Nishino, K. Iwasaki, Y. Dobashi, T. Nishita, "Visual Simulation of Freezing Ice with Air Bubbles", SIGGRAPH ASIA 2012, Technical Brief Article No. 1, 2012 (acceptance ratio 28.3% 28/99)
• 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.
• K. Iwasaki, T. Nishino, Y. Dobashi, "Real-time Rendering of Endless Cloud Animation", Proc. Pacific Graphics 2011 short paper, pp. 73-76.
• 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, Spring Conference on Computer Graphics, 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), 2010-12, Article 177.
• 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.
• 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

2007

• K. Iwasaki, S. Nakatani, S. Takagi, F. Yoshimoto, "Interactive Rendering of Specular Surfaces Taking into Account Self-Reflection", Proc. of IEVC 2007 in CDROM
• 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
• 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
• K. Iwasaki, K. Ueda, Y. Omoya, S. Takagi, F. Yoshimoto,``Real-time Rendering of Objects Coated with Multilayer Thin Films," Proc. of ISICE 2007

2006

• Y. Yue, K. Iwasaki, T. Nishita, "Radiance Grid Pyramid: A Fast Photon Mapping Suited for Final Gathering," Proc of Pacific Graphics 2006, pp. 153-157, 2006.
• K. Iwasaki, Y. Dobashi, N. Tamura, H. Johan, F. Yoshimoto, T. Nishita, "Precomputed Radiance Transfer for Dynamic Scenes with Diffuse Interreflection", SIGGRAPH2006 sketch.
• 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.
• K. Iwasaki, K. Ono, Y. Dobashi, T. Nishita, "Point-based Rendering of Water Surfaces with Splashes Simulated by Particle-based Simulation",Proc. of NICOGRAPH 2006, 2006.
• Hirotoshi Mori, Kei Iwasaki, Saeko Takagi, and Fujiichi Yoshimoto: ''A Method for Improving the Silhouette Lines of Unskillful Hand-drawn Curves,'' in Proceedings of International Workshop on Advanced Image Technology (IWAIT) 2006, pp. 355-360, Naha, January 2006.
• Toshiki Ohara, Saeko Takagi, Kei Iwasaki, and Fujiichi Yoshimoto: ''A Handy System to Support Novices' Illustrations,'' in Proceedings of International Workshop on Advanced Image Technology (IWAIT) 2006, pp. 585-590, Naha, January 2006.

2005

• Kei Iwasaki, Fujiichi Yoshimoto, Yoshinori Dobashi, Tomoyuki Nishita: A Fast Rendering Technique of Transparent Objects and Caustics, Proc. of CASA2005, 2005.
• Masashi Oda, Kei Iwasaki, Saeko Takagi, Fujiichi Yoshimoto: Fast Rendering Method for Point-sampled Translucent Geometry, Proc. of SIGGRAPH2005 Poster, 2005

• K. Iwasaki, Y.Dobashi, T. Nishita, "A Fast Rendering Method for Reflective and Refractive Caustics", Computer Graphics Forum (Eurographics 2003) , Vol. 33, No. 4, pp. 515-522, 2003.
• 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.