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

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.

Mar 29, 2025

Our paper “Geometrical Properties of Text Token Embeddings for Strong Semantic Binding in Text-to-Image Generation” preprint released on arXiv.

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},
}