Kiseok Choi (최기석)
Kiseok Choi (최기석)
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I am a postdoctoral researcher in the Visual Computing Lab (VCLAB) at KAIST, supervised by Prof. Min H. Kim. My research lies at the intersection of computer graphics, computational imaging, and Physical AI, with a focus on reconstructing hidden and internal structures that are inaccessible to conventional sensing systems. By combining differentiable photon transport modeling with advanced 3D scene representations, I develop physics-aware computational methods for non-line-of-sight (NLOS) imaging and X-ray computed tomography (CT). My long-term vision is to build next-generation Physical AI systems that can perceive, reconstruct, and understand the hidden physical world by unifying computer graphics, computer vision, scientific imaging, optics, and acoustics within a common framework for physics-based 3D imaging.
[Google Scholar] [CV] [E-mail]
Education
Education
[2021. 03. - 2026. 02.] PhD, School of Computing, KAIST, Republic of Korea (Advisor: Prof. Min H. Kim)
- Thesis: Physically based CT Reconstruction with Differentiable Rendering
(Outstanding PhD Thesis in School of Computing, KAIST, 2026)
[2006. 03. - 2008. 02.] MS, Electrical Engineering and Computer Science, Seoul National University (SNU), Republic of Korea (Advisor: Prof. Sang Lyul Min)
- Thesis: Design and Implementation of Emulation Framework on Testing Reliability of FTL
[2002. 03. - 2006. 02.] BS, Computer Science and Engineering, Seoul National University (SNU), Republic of Korea
Awards / Scholarship
Awards / Scholarship
2026 Eurographics Best Paper Award, European Association for Computer Graphics
2026 Jang Young Sil Fellow Program (Excellence Track) for Postdoc., KAIST
2026 Young Researcher Award (Excellence Award), Korea Computer Graphics Society
2026 Outstanding PhD Thesis Award in School of Computing, KAIST
2023 Program Directors Award, Samsung Science & Technology Foundation
2021 Top 10 Research Accomplishments, KAIST
Publications
Publications
⭐ Splat-Based Metal Artifact Reduction in Cone-Beam CT via Compact Attenuation Modeling
Kiseok Choi, Jaemin Cho, Inchul Kim, Min H. Kim
Proc. IEEE/CVF Computer Vision and Pattern Recognition (CVPR 2026), Jun. 3 – 7, 2026
⭐ Revisiting Pose Sensitivity in Splat-based Computed Tomography under Sparse-view Reconstruction
Kiseok Choi, Hyeongjun Cho, Inchul Kim, Min H. Kim
Proc. IEEE/CVF Computer Vision and Pattern Recognition (CVPR 2026), Jun. 3 – 7, 2026
Splat-based Metal Artifact Reduction in Cone-Beam CT via Polychromatic Modeling
Kiseok Choi, Inchul Kim, Jaemin Cho, Hyeongjun Cho, Min H. Kim
Computer Graphics Forum (CGF), presented at Eurographics 2026, 45(2), May 4 – 8, 2026
Best Paper Award, European Association for Computer Graphics
Invited talk at SIGGRAPH 2026, Jul. 20, 2026
⭐ Designing and Fabricating Color BRDFs with Differentiable Wave Optics
Yixin Zeng, Kiseok Choi, Hadi Amata, Kaizhang Kang, Wolfgang Heidrich, Hongzhi Wu, Min H. Kim
ACM Transactions on Graphics (TOG), presented at SIGGRAPH Asia 2025, 44(6), Dec. 15 – 18, 2025
⭐ Benchmarking Burst Super-Resolution for Polarization Images: Noise Dataset and Analysis
Inseung Hwang, Kiseok Choi, Hyunho Ha, Min H. Kim
Proc. IEEE/CVF International Conference on Computer Vision (ICCV 2025), Oct. 19 – 23, 2025
⭐ Self-Calibrating, Fully Differentiable NLOS Inverse Rendering
Kiseok Choi, Inchul Kim, Dongyoung Choi, Julio Marco, Diego Gutierrez, Min H. Kim
Proc. ACM SIGGRAPH Asia 2023, Dec. 12 – 15, 2023
⭐ Differentiable Transient Rendering
Shinyoung Yi, Donggun Kim, Kiseok Choi, Adrian Jarabo, Diego Gutierrez, Min H. Kim
ACM Transactions on Graphics (TOG), presented at SIGGRAPH Asia 2021, 40(6), Dec. 14 – 17, 2021
Top 10 Research Accomplishments, KAIST
Development Platforms for Flash Memory Solid State Disks
Hongseok Kim, Eyee Hyun Nam, Kiseok Choi, Yoon Jae Seong, Jin-yong Choi, Sang Lyul Min
Proc. IEEE International Symposium on Object and Component-Oriented Real-Time Distributed Computing, May. 5 – 7, 2008
Flash Memory-based Storage Device for Mobile Embedded Applications
Jin-yong Choi, Kiseok Choi, Sung-Kwan Kim, Sookwan Lee, Eyee Hyun Nam, JiHyuck Yun, Sang Lyul Min, Yookun Cho
Proc. IEEE International Conference on Systems, Man and Cybernetics, Oct. 7 – 10, 2007
* ⭐ denotes papers published at premier venues in graphics and vision (e.g., SIGGRAPH, SIGGRAPH Asia, CVPR, ICCV, ECCV).
* ⭐ denotes papers published at premier venues in graphics and vision (e.g., SIGGRAPH, SIGGRAPH Asia, CVPR, ICCV, ECCV).
Professional Experience
Professional Experience
[2011. 11. - 2021. 01.] Senior Researcher, Sonar Systems Project Management Office, Agency for Defense Development (ADD), Republic of Korea
[2013. 04. - 2013. 07.] Visiting Researcher, ATLAS Elektronik, Germany (Topic: Hardware Development for Next-Generation Submarine SONAR)
[2012. 05. - 2012. 07.] Visiting Researcher, ATLAS Elektronik, Germany (Topic: Signal Processing for Next-Generation Submarine SONAR)
[2008. 01. - 2011. 03.] Researcher, Battery Research Center, SK Innovation, Republic of Korea
Teaching Assistant Experience
Teaching Assistant Experience
Interactive Computer Graphics @ KAIST
Special Topics in Embedded System @ Seoul National University
Advanced Computer Architecture @ Seoul National University
Computer Architecture @ Seoul National University
Projects
Projects
[2025-2026] Spatio-Temporal Gated Imaging System (Samsung Science & Technology Foundation)
[2023-2025] X-ray CT Artifact Reduction (***)
[2021-2023] Non-line-of-sight Imaging System (Samsung Science & Technology Foundation)
[2020-2021] Sonar System for Destroyer-class Surface Ship (ADD)
[2014-2020] Harbor Underwater Surveillance System (ADD)
[2011-2014] Sonar System for Submarine (ADD)
[2008-2011] Battery Management System (SK Innovation)
[2007-2008] File System Reliability Improvement for Mobile Phone (LG Electronics)
[2006-2007] Development Platform for Flash Memory Controller (ETRI)
Reviewer Experience
Reviewer Experience
[ACM] SIGGRAPH: 2026
[ACM] SIGGRAPH Asia: 2025, 2026
[IEEE] Transactions on Visualization and Computer Graphics (TVCG): 2025, 2026
[IEEE] Transactions on Pattern Analysis and Machine Intelligence (TPAMI): 2025
[IEEE] Transactions on Cybernetics (TCYB): 2026
[IEEE/CVF] Conference on Computer Vision and Pattern Recognition (CVPR): 2025
[NeurIPS Foundation] Conference on Neural Information Processing Systems (NeurIPS): 2026
[Asia Graphics Association] Pacific Conference on Computer Graphics and Applications (PG): 2023
[IEEE] International Conference on 3D Vision (3DV): 2026
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