Hui Sung Lee

About

Hui Sung Lee is a pioneering researcher in human-robot interaction (HRI), with a specialization in emotional communication systems for social and service robots. His work sits at the compelling intersection of affective computing, robotics, and human psychology, focusing on how machines can authentically express and interpret human emotions. Lee's most influential contribution is his development of the Linear Affect-Expression Space Model, which established a principled, generalizable framework for designing facial expressions in mascot-type robots — work that has accumulated over 50 citations and fundamentally shaped how researchers approach robotic face design. Building on this, his emotion interaction systems for service robots (46 citations) demonstrated how robots could move beyond mere mechanical utility to become emotionally credible home assistants. His research consistently expanded the expressive toolkit available to robots, exploring color, blinking, and multimodal cues to convey emotional intensity, and later incorporating Laban Movement Analysis with RGB-D cameras to capture whole-body emotional motion. This breadth reflects Lee's conviction that genuine HRI requires a holistic approach to emotional expression. With over 200 cumulative citations across a focused body of work, Lee has made enduring contributions to making robots more socially intelligent, empathetic, and genuinely useful companions for human environments.

Research Focus

Key Achievements

Top Papers

1. 1
   A Linear Affect–Expression Space Model and Control Points for Mascot-Type Facial Robots

   52 citations · 2007
2. 2
   Emotion Interaction System for a Service Robot

   46 citations · 2007
3. 3
   Generation of Realistic Robot Facial Expressions for Human Robot Interaction

   25 citations · 2014
4. 4
   Determining color and blinking to support facial expression of a robot for conveying emotional intensity

   23 citations · 2008
5. 5
   LMA based emotional motion representation using RGB-D camera

   18 citations · 2013
6. 6
   A Linear Dynamic Affect-Expression Model: Facial Expressions According to Perceived Emotions in Mascot-Type Facial Robots

   14 citations · 2007
7. 7
   Development of a Facial Expression Imitation System

   14 citations · 2006
8. 8
   An Affect-Expression Space Model of the Face in a Mascot-Type Robot

   13 citations · 2006
9. 9
   Biologically inspired models and hardware for emotive facial expressions

   12 citations · 2006
10. 10
    LMA based emotional motion representation using RGB-D camera

    10 citations · 2013

Key Collaborators

Contact & Links