About me
I am a Senior Researcher at the Media Research Division of the ETRI, based in Daejeon, Korea. I received my Ph.D. in Electrical Engineering from KAIST, advised by Prof. Munchurl Kim (VICLab).
My research lies at the intersection of immersive video and computer vision, with a focus on 3D/4D scene representation, novel view synthesis, and video coding for machines (VCM). I am particularly interested in efficient and application-friendly 3D/4D Gaussian Splatting for immersive media services of real-world videos.
You can reach me at s.kwak [at] etri.re.kr.
Education
B.S. in Electrical and Electronic Engineering, Yonsei University
National Science & Engineering Scholarship (Full tuition)
National Science & Engineering Scholarship (Full tuition)
Mar. 2008 – Feb. 2012
Experience
Senior Researcher, Media Research Division, ETRI
Mar. 2014 – Present
Selected Publications
MoRel: Long-Range Flicker-Free 4D Motion Modeling Anchor Relay-based Bidirectional Blending via with Hierarchical Densification
S. Kwak*, W. Kwon*, J. Jeong, G. Kim, W.-S. Cheong, J. Oh (* Equal contribution)
CVPR, 2026 ⭐ Highlight
MoDec-GS: Global-to-Local Motion Decomposition and Temporal Interval Adjustment for Compact Dynamic 3D Gaussian Splatting
S. Kwak, J. Kim, J. Jeong, W.-S. Cheong, J. Oh, M. Kim
CVPR, 2025
Feature-Guided Machine-Centric Image Coding for Downstream Tasks
S. Kwak, J. Yun, H. Choo, M. Kim
IEEE ICMEW, 2023
📄 Paper
View Synthesis with Sparse Light Field for 6DoF Immersive Video
S. Kwak, J. Yun, J.-Y. Jeong, Y. Kim, I. Ihm, W.-S. Cheong, J. Seo
ETRI Journal, 2022
🎥 Video