Cheolhwan Yoo

Cheolhwan Yoo

Senior Researcher at ETRI · Robot Foundation Model Research Section
Associate Professor at UST (University of Science and Technology)


About

I am a senior researcher at the Electronics and Telecommunications Research Institute (ETRI) and a concurrent associate professor at UST (University of Science and Technology), South Korea.
My current research focuses on Vision-Language Models (VLM) and Vision-Language-Action (VLA) models, with broader interests in computer vision, deep learning, and their applications in robotics and healthcare.


Ongoing Research

Vision-Language-Action (VLA) for Robot Manipulation

We are developing Vision-Language-Action models that enable robots to understand natural language instructions and autonomously plan and execute manipulation tasks. By bridging vision, language, and action spaces, our goal is to build general-purpose robot intelligence that can adapt to diverse real-world environments.

Whole-Body VLA for Humanoid Robot Control

Extending VLA models to whole-body humanoid control, we are exploring methods for coordinating full-body locomotion and manipulation through unified vision-language-action frameworks. This research aims to enable humanoid robots to perform complex, multi-step tasks in unstructured environments.


Publications

2025

CARE-VL
ConferenceCARE-VL: A Domain-Specialized Vision-Language Model for Early ASD Screening [paper] [code]
CH Yoo, JH Yoo, J Jang
International Conference on Medical Image Computing and Computer-Assisted Intervention (MICCAI), 2025

2024

PRL
JournalA Unified Framework to Stereotyped Behavior Detection for Screening Autism Spectrum Disorder [paper] [code]
CH Yoo, JH Yoo, MK Back, WJ Wang, YG Shin
Pattern Recognition Letters, 2024

2023

Deep Emotion
JournalDeep Emotion Change Detection via Facial Expression Analysis [paper] [code]
BO Han, CH Yoo, HW Kim, JH Yoo, J Jang
Neurocomputing, 2023
Pointing Gesture
ConferencePointing Gesture Recognition via Self-Supervised Regularization for ASD Screening [paper] [code]
CH Yoo, JH Yoo, HW Kim, BO Han
IEEE/CVF International Conference on Computer Vision Workshops (ICCVW), 2023
Gaze Estimation
JournalImproving Domain Generalization in Appearance-Based Gaze Estimation with Consistency Regularization [paper]
MK Back, CH Yoo, JH Yoo
IEEE Access, 2023
GAN Shortcut
JournalEffective Shortcut Technique for Generative Adversarial Networks [paper]
S Park, CH Yoo, YG Shin
Applied Intelligence, 2023

2022

ICPR Siamese
ConferenceSimple Yet Effective Approach to Repetitive Behavior Classification based on Siamese Network [paper]
CH Yoo, JH Yoo, HW Kim, BO Han
International Conference on Pattern Recognition (ICPR), 2022

2020

Hand Pose
JournalFast and Accurate 3D Hand Pose Estimation via Recurrent Neural Network for Capturing Hand Articulations [paper]
CH Yoo, S Ji, YG Shin, SW Kim, SJ Ko
IEEE Access, 2020

2019

Subpixel Sampling
JournalSelective Sampling and Optimal Filtering for Subpixel-Based Image Down-Sampling [paper]
SH Chae, ST Kim, JY Kim, CH Yoo, SJ Ko
IEEE Access, 2019
Clothing Parsing
JournalContext-Aware Encoding for Clothing Parsing [paper]
CH Yoo, YG Shin, SW Kim, SJ Ko
Electronics Letters, 2019

2018

Gaze Tracking
JournalA Robust Extrinsic Calibration Method for Non-Contact Gaze Tracking in the 3-D Space [paper]
MC Kang, CH Yoo, KH Uhm, DH Lee, SJ Ko
IEEE Access, 2018
Pentile Display
JournalSubpixel Rendering for the Pentile Display Based on the Human Visual System [paper]
SH Chae, CH Yoo, JY Sun, MC Kang, SJ Ko
IEEE Transactions on Consumer Electronics, 2018

2017

Face Recognition
JournalHigh-Dimensional Feature Extraction Using Bit-Plane Decomposition of Local Binary Patterns for Robust Face Recognition [paper]
CH Yoo, SW Kim, JY Jung, SJ Ko
Journal of Visual Communication and Image Representation, 2017
LBP-Ferns
JournalLBP-Ferns-Based Feature Extraction for Robust Facial Recognition [paper]
JY Jung, SW Kim, CH Yoo, WJ Park, SJ Ko
IEEE Transactions on Consumer Electronics, 2017

For a complete list of publications, visit my Google Scholar profile.


Patents

2026

AppliedApparatus and Method for Recognizing Pointing Gesture of Child
US Patent Application

2025

RegisteredMethod and Apparatus for Detecting Best Shot in Long-Range Face Recognition System
US Patent 12,395,728
RegisteredPupil Detection Device, Operating Method of Pupil Detection Device, and Computing Device
US Patent 12,340,623
AppliedApparatus and Method for Counting People in Omnidirectional Image
US Patent Application
AppliedMethod and Apparatus for Assisting in ASD Diagnosis Based on Engagement Estimation
US Patent Application
AppliedDeep Neural Network Learning Method and Apparatus for Gaze Estimation
US Patent Application
AppliedInteraction-Based AI Analysis Method and Apparatus for Screening Autism Spectrum Disorder
US Patent Application
AppliedEmotion Recognition Method and Apparatus Using Temporal Attention
US Patent Application

2024

AppliedMethod and Apparatus for Detecting Stereotyped Behavior Based on Skeleton
US Patent Application
AppliedMethod and Apparatus for Supporting ASD Diagnosis Using Pointing Gesture Recognition
US Patent Application

2023

AppliedApparatus for Recognizing User Command Using Gaze and Operation Method Thereof
US Patent Application

Experience

Electronics and Telecommunications Research Institute (ETRI)

Senior Researcher · Robot Foundation Model Research Section
2020 - Present

University of Science and Technology (UST)

Associate Professor (Concurrent)
2026 - Present

Education

Korea University

Ph.D. in Electrical Engineering
2014 - 2020

Korea University

B.S. in Electrical Engineering
2010 - 2014

Contact

ch.yoo@etri.re.kr Google Scholar GitHub