I am a Ph.D. candidate at Korea University, advised by Seungryong Kim and Paul Hongsuck Seo, and a research intern at Adobe. My research focuses on general perception in video — especially Segment Anything and Matting Anything (VideoMaMa, VideoMaMa++) — and its application to video understanding.

I have interned at Adobe in San Jose, where I was fortunate to work with Seoung Wug Oh and Joon-Young Lee. Earlier, I was a research intern at NAVER Search U.S. working with Dongchan Kim, and a Language AI researcher at the NLP Center of NCSOFT, working with Ayoung Moon and Seungjin Lee.

News

  • Sep 2026Two papers (VideoMaMa++, Repurposing Video Diffusion Transformers for Cross-View Spatiotemporal Object Correspondence) accepted to NeurIPS 2026.
  • Sep 2026VideoMaMa code repository surpassed 500 GitHub stars.
  • Apr 2026Started a research internship at Adobe (San Jose, CA).
  • Feb 2026VideoMaMa accepted to CVPR 2026.

Publications

* denotes equal contribution, † denotes corresponding author. Selected work

2026

VideoMaMa++: Temporally Consistent Video Matting via Preserve-and-Refine Tokens

Sangbeom Lim, Seoung Wug Oh, Heeji Yoon, Seungryong Kim†, Joon-Young Lee†

NeurIPS, 2026

Repurposing Video Diffusion Transformers for Cross-View Spatiotemporal Object Correspondence

Siyoon Jin*, Dahyun Chung*, Honggyu An, Sangbeom Lim, Wonjin Nam, Jaewoo Jung, Wonjun Moon, Seungryong Kim†

NeurIPS, 2026

2025

2023

Experience

Adobe Research Scientist / Engineer Intern · San Jose, CA, USA

Apr – Aug 2026

Mentors: Seoung Wug Oh and Joon-Young Lee

Adobe Research Scientist / Engineer Intern · San Jose, CA, USA

May – Sep 2025

Mentors: Seoung Wug Oh, Gabriel Huang, and Joon-Young Lee

NCSOFT Language AI Researcher · Pangyo, Korea

Jan – Sep 2022 · Apr – Oct 2023

Mentors: Ayoung Moon, Seungjin Lee

NAVER Search U.S. Research Intern · Seattle, WA (Hybrid)

Dec 2021 – Feb 2022

Mentors: Dongchan Kim, Young-Bum Kim, and Yoon Kim

Education

Korea University Ph.D. in Computer Science and Engineering · Seoul, Korea

2023 – Present

Advised by Seungryong Kim and Paul Hongsuck Seo.

Academic Service

  • 2027Reviewer: AAAI
  • 2026Reviewer: AAAI, ICLR, CVPR, NeurIPS, TPAMI
  • 2025Reviewer: AAAI, ICCV
  • 2024Reviewer: CVPR Workshops