Sunghyun Ahn

Sunghyun Ahn

ML Research Engineer Seocho, Seoul, Korea

skd@yonsei.ac.kr

소개

ML Research Engineer specializing in video understanding, deep learning, and scalable evaluation systems. Experienced in R&D for video anomaly detection, medical image segmentation, and end-to-end ML model evaluation platforms.

  • Graduated with honors from Yonsei University (M.S.) and The Catholic University of Korea (B.S.)

  • Published as first author at premier international conference, and co-authored numerous publications

  • Served as a peer reviewer for renowned international journals, including IEEE Transactions on Image Processing (TIP)

  • Curriculum Vitae (CV)

경력

PYLER

Seoul, Korea

ML Research Engineer (Technical Research Personnel)

Jun. 2025 - 현재

  • Developed end-to-end ML model evaluation platforms

    • Benchmarking: Led qualitative and quantitative evaluation and benchmarking of frontier models (e.g., Gemini, GPT), delivering actionable research insights

    • Visualization: Built a web-based research visualization dashboard enabling result exploration, demos, and researcher collaboration

    • Scalable Infrastructure: Architected scalable research infrastructure, including distributed LLM-based QA with Ray, a Feast-based video feature store, and an end-to-end video evaluation pipeline

  • Conducted research on video understanding, focusing on video scene segmentation and video RAG

  • Company website

Data Engineering LAB

Seoul, Korea

AI Researcher

Feb. 2022 - Apr. 2025

Computer Vision and Machine Intelligence LAB

Seoul, Korea

Undergraduate Research Assistant

Jun. 2021 - Jan. 2022

  • Conducted research on object detection for smart farm

  • Advisor: Prof. Hochul Kang (hckang19@catholic.ac.kr)

학력

Yonsei University

Seoul, Korea

Computer Science

Feb. 2023 - Jan. 2025

  • M.S. in Computer Science

  • GPA: 4.33 / 4.5

The Catholic University of Korea

Seoul, Korea

Computer Science

Feb. 2021 - Jan. 2023

  • B.S. in Computer Science

  • GPA: 4.17 / 4.5 (Rank: 4/51)

기술

Academic services — Reviewer

  • Peer reviewer for international journals and conferences

    • IEEE Transactions on Image Processing (TIP)

    • Pattern Recognition (PR)

    • AAAI Conference on Artificial Intelligence (AAAI)

  • Domains: computer vision, video anomaly detection

Tools and Frameworks

  • ML - PyTorch, vLLM, Ray, Feast

  • Web and Backend - Django, Node.js, Spring, Vercel

  • Utilities - LaTeX

Languages

  • Korean - Native

  • English - Conversational and Academic presentation

수상

Best Presentation Paper Award

KIISE, Korea

Awarded for presenting a paper on LVLM-based video anomaly detection at the Korea Software Congress

Jan. 2025

Academic Excellence Award

Catholic Univ.

Graduated in the top 8% of the class and received magna cum laude honors in recognition of academic excellence

Jan. 2023

Grand Award

Catholic Univ.

First place in the Capstone Design Competition for an AI-based food expiration-date management chatbot

Sep. 2022

Top 9 (Finalist)

FSI, Korea

Top 9 finalist in a financial security idea competition for a GAN-based palmprint authentication system

Jul. 2022

프로젝트

Scene-Aware Summarization for Long & Multi-Video RAG

PYLER

Poster presentation

Sep. 2025 - Nov. 2025

Accepted at NVIDIA GTC 2026, San Jose, CA

  • Enhanced video retrieval performance through scene-based video indexing

  • Conducted Video QA experiments comparing uniform segmentation and scene-based segmentation on long-video benchmark

AI-Powered Smart Fridge Chatbot

Catholic Univ.

Team project

Jan. 2022 - Apr. 2022

Grand Prize in Capstone Design Contest (Top project)

  • Led the Fridge team; designed and implemented an end-to-end AI system

  • Developed a vision-based AI chatbot for automatic food expiration-date recognition and management

  • Conducted industry interviews with E-mart (Shinsegae Group) to validate real-world adoption scenarios

자격증

Certificate of Reviewing

Elsevier, UK

Pattern Recognition

Sep. 2024

출판물

  • AnyAnomaly: Zero-shot Customizable Video Anomaly Detection with LVLM - IEEE/CVF Winter Conference on Applications of Computer Vision (WACV), Arizona, USA (2026)

    • Authors: Sunghyun Ahn*, Youngwan Jo*, Kijung Lee, Sein Kwon, Inpyo Hong, and Sanghyun Park

    • Paper · Github · Project

  • VideoPatchCore: An Effective Method to Memorize Normality for Video Anomaly Detection - Asian Conference on Computer Vision (ACCV), Hanoi, Vietnam (BK list, IF=1) (2024)

    • Authors: Sunghyun Ahn, Youngwan Jo, Kijung Lee, and Sanghyun Park

    • Paper · Github · Project

  • Making Anomalies More Anomalous: Video Anomaly Detection Using a Novel Generator and Destroyer - IEEE Access (SCI(E)) (2024)

    • Authors: Seungkyun Hong*, Sunghyun Ahn*, Youngwan Jo, and Sanghyun Park

    • Paper · Github · Project

  • Dual Stream Fusion U-Net Transformers for 3D Medical Image Segmentation - IEEE International Conference on Big Data and Smart Computing (BigComp), Bangkok, Thailand (2024)

    • Authors: Seungkyun Hong*, Sunghyun Ahn*, Youngwan Jo, and Sanghyun Park

    • Paper · Github · Project

  • Unified Video Anomaly Detection Model for Detecting Different Anomaly Types - IEEE/CVF Winter Conference on Applications of Computer Vision (WACV), Arizona, USA (2026)

    • Authors: Kijung Lee, Youngwan Jo, Sunghyun Ahn, and Sanghyun Park

  • AMoE-BTS: An Adaptive Mixture of Experts for Clinical Decision Support in Multimodal Brain Tumor Segmentation - ACM/SIGAPP Symposium On Applied Computing (SAC), Thessaloniki, Greece (BK list, IF=1) (2026)

    • Authors: Jeongeun Kim, Youngwan Jo, Sunghyun Ahn and Sanghyun Park

  • GranQ: Efficient Channel-wise Quantization via Vectorized Pre-Scaling for Zero-Shot QAT - ACM/SIGAPP Symposium On Applied Computing (SAC), Thessaloniki, Greece (BK list, IF=1) (2026)

    • Authors: Inpyo Hong, Youngwan Jo, Hyojeong Lee, Sunghyun Ahn, Kijung Lee and Sanghyun Park

    • Paper

  • MDVAD: Multimodal Diffusion for Video Anomaly Detection - Pacific-Asia Conference on Knowledge Discovery and Data Mining (PAKDD), Sydney, AUS (BK list, IF=1) (2025)

    • Authors: Kijung Lee, Youngwan Jo, Sunghyun Ahn, and Sanghyun Park

    • Paper

  • Advanced Knowledge Transfer: Refined Feature Distillation for Zero-Shot Quantization in Edge Computing - ACM/SIGAPP Symposium On Applied Computing (SAC), Sicily, Italy (BK list, IF=1) (2025)

    • Authors: Inpyo Hong, Youngwan Jo, Hyojeong Lee, Sunghyun Ahn, and Sanghyun Park

    • Paper

연락처

이메일

skd@yonsei.ac.kr

LinkedIn

sunghyunahn-ai

GitHub

skiddieahn

Tech Blog

https://shacoding.com/

Google Scholar

https://scholar.google.co.kr/citations?user=mKchEwoAAAAJ&hl=ko