Junseo Bang

Ph.D. Candidate

About Me

Hi! I am a Ph.D. candidate working at the intersection of optical imaging and generative AI. I develop diffusion/flow-based methods for solving inverse problems in imaging (advisor: Prof. Se Young Chun, Intelligent Computational Imaging Lab). Previously, I worked on advanced imaging systems with nanophotonic/metasurface technologies (advisors: Prof. Byoungho Lee, Prof. Yoonchan Jeong, Optical Engineering and Quantum Electronics Lab).

💡 My research interest is bridging the gap between optical system design and learned signal reconstruction, developing next-generation intelligent imaging systems that integrate physics and machine intelligence.

Download CV

Interests

Computational Imaging
Inverse Problems
Generative Models
Metasurfaces & Nano-Optics

Education

Ph.D. in Electrical and Computer Engineering

Seoul National University · 2021 – present
B.S. in Electrical and Computer Engineering

Seoul National University · 2016 – 2021

News

Oct 03, 2026

Our paper “FLINT: Coupling Proximal Initialization and Bounded Stochasticity for Flow-Matching Inverse Problems” accepted to NeurIPS 2026.

Aug 08, 2026

Our paper “Metric 3D Height Reconstruction from 2D SEM Images via Confidence-Weighted Fusion of Stereo and Four-Channel Photometric Cues” accepted to ISOCC 2026.

May 26, 2026

An updated version of our paper “Self-Cascaded Diffusion Models for Arbitrary-Scale Image Super-Resolution” is now available on arXiv. The code will be released soon.

May 01, 2026

Our paper “Triadic Dynamics Aware Diffusion Posterior Sampling for Inverse Problems: Optimizing Guidance and Stochasticity Schedules” accepted to ICML 2026.

Jun 09, 2025

Our paper “Self-Cascaded Diffusion Models for Arbitrary-Scale Image Super-Resolution” preprint released on arXiv.

May 12, 2025

Our paper AIM 2024 Challenge on UHD Blind Photo Quality Assessment accepted to ECCV 2024 Workshops.

All news →

Publications

2026

ICML 2026

Triadic Dynamics Aware Diffusion Posterior Sampling for Inverse Problems: Optimizing Guidance and Stochasticity Schedules

Junseo Bang^*, Dong Ju Mun^*, Hoigi Seo, Seongmin Hong, and Se Young Chun

In International Conference on Machine Learning (ICML), 2026

arXiv Bib HTML Code Website

@inproceedings{bang2026triadic,
  title = {Triadic Dynamics Aware Diffusion Posterior Sampling for Inverse Problems: Optimizing Guidance and Stochasticity Schedules},
  author = {Bang, Junseo and Mun, Dong Ju and Seo, Hoigi and Hong, Seongmin and Chun, Se Young},
  booktitle = {International Conference on Machine Learning (ICML)},
  year = {2026},
}

2025

arXiv

Self-Cascaded Diffusion Models for Arbitrary-Scale Image Super-Resolution

Junseo Bang^*, Joonhee Lee^*, Kyeonghyun Lee^*, Haechang Lee, Dong Un Kang, and Se Young Chun

arXiv preprint, 2025

arXiv Bib HTML

@article{bang2025self,
  title = {Self-Cascaded Diffusion Models for Arbitrary-Scale Image Super-Resolution},
  author = {Bang, Junseo and Lee, Joonhee and Lee, Kyeonghyun and Lee, Haechang and Kang, Dong Un and Chun, Se Young},
  journal = {arXiv preprint},
  year = {2025},
}

arXiv

Geometrical Properties of Text Token Embeddings for Strong Semantic Binding in Text-to-Image Generation

Hoigi Seo^*, Junseo Bang^*, Haechang Lee^*, Joohoon Lee, Byung Hyun Lee, and Se Young Chun

arXiv preprint, 2025

arXiv Bib HTML

@article{seo2025geometrical,
  title = {Geometrical Properties of Text Token Embeddings for Strong Semantic Binding in Text-to-Image Generation},
  author = {Seo, Hoigi and Bang, Junseo and Lee, Haechang and Lee, Joohoon and Lee, Byung Hyun and Chun, Se Young},
  journal = {arXiv preprint},
  year = {2025},
}

ACS Photonics

Cascaded Janus Meta-Optics: Generalized Platform for Bidirectional Asymmetric Modulation of Light

Junseo Bang, Youngjin Kim, Taewon Choi, Changhyun Kim, Hyunwoo Son, Sun-Je Kim, Yoonchan Jeong, and Byoungho Lee

ACS Photonics, 2025

Bib HTML

@article{bang2025janus,
  title = {Cascaded Janus Meta-Optics: Generalized Platform for Bidirectional Asymmetric Modulation of Light},
  author = {Bang, Junseo and Kim, Youngjin and Choi, Taewon and Kim, Changhyun and Son, Hyunwoo and Kim, Sun-Je and Jeong, Yoonchan and Lee, Byoungho},
  journal = {ACS Photonics},
  year = {2025},
}

2024

Science Advances

Metasurface Folded Lens System for Ultrathin Cameras

Youngjin Kim^*, Taewon Choi^*, Gun-Yeal Lee, Changhyun Kim, Junseo Bang, Junhyeok Jang, Yoonchan Jeong, and Byoungho Lee

Science Advances. Featured in Phys.org , 2024

Bib HTML

@article{kim2024metasurface,
  title = {Metasurface Folded Lens System for Ultrathin Cameras},
  author = {Kim, Youngjin and Choi, Taewon and Lee, Gun-Yeal and Kim, Changhyun and Bang, Junseo and Jang, Junhyeok and Jeong, Yoonchan and Lee, Byoungho},
  journal = {Science Advances},
  year = {2024},
}

Nano Letters

Multiwavelength Achromatic Deflector in the Visible Using a Single-Layer Freeform Metasurface

Taewon Choi, Chulsoo Choi, Junseo Bang, Youngjin Kim, Hyunwoo Son, Changhyun Kim, Junhyeok Jang, Yoonchan Jeong, and Byoungho Lee

Nano Letters, 2024

Bib HTML

@article{choi2024multiwavelength,
  title = {Multiwavelength Achromatic Deflector in the Visible Using a Single-Layer Freeform Metasurface},
  author = {Choi, Taewon and Choi, Chulsoo and Bang, Junseo and Kim, Youngjin and Son, Hyunwoo and Kim, Changhyun and Jang, Junhyeok and Jeong, Yoonchan and Lee, Byoungho},
  journal = {Nano Letters},
  year = {2024},
}

ACS Photonics

Strong Coupling Induced Bound States in the Continuum in a Hybrid Metal–Dielectric Bilayer Nanograting Resonator

Hyunwoo Son, Taewon Choi, Kyuho Kim, Youngjin Kim, Junseo Bang, Sun-Je Kim, Byoungho Lee, and Yoonchan Jeong

ACS Photonics, 2024

Bib HTML

@article{son2024strong,
  title = {Strong Coupling Induced Bound States in the Continuum in a Hybrid Metal--Dielectric Bilayer Nanograting Resonator},
  author = {Son, Hyunwoo and Choi, Taewon and Kim, Kyuho and Kim, Youngjin and Bang, Junseo and Kim, Sun-Je and Lee, Byoungho and Jeong, Yoonchan},
  journal = {ACS Photonics},
  year = {2024},
}