C.V.

Educational Background

Ph.D., Robotics, Korea Advanced Institute of Science and Technology (KAIST), Daejeon, Republic of Korea (Sep 2006 ~ Feb 2014)

Advisor: Hyun Seung Yang (Computer Science)

Artificial Intelligence and Media Laboratory

Areas of concentration: statistical/machine learning, manifold learning, computer vision, pattern recognition, and artificial intelligence

Dissertation: "Human Activity Recognition Based on Bayesian Learning and Directional Statistics" (in Korean)

M.Sc., Mechanical Engineering, Yonsei University, Seoul, Republic of Korea (Sep 1996 ~ Aug 1998)

Advisor: Yong Je Choi (Mechanical Engineering)

Mechatronics and Robotics Laboratory

Areas of concentration: kinematics (kinematic geometry, screw theory), dynamics, control theory, and mechanism design

Dissertation: "Vibrational Analysis of a Multi-Body System via Screw Theory" (in Korean)

B.Sc., Mechanical Engineering, Yonsei University, Seoul, Republic of Korea (Mar 1992 ~ Feb 1996)

Advisor: Kang-Rae Cho (Mechanical Engineering)

Applied Fluid Mechanics Laboratory

Dissertation: "Fluid Field Analysis around an Isolated Airfoil using PHOENICS" (in Korean)

Academic Appointments

Assistant Professor, Intelligent Robot Engineering, Mokwon University, Daejeon, Republic of Korea (Mar 2014 ~ Aug 2014)

Lectured in Introduction to Robotics, Design and Application of Microrobot, and Engineering Mathematics Basic

Lecturer, Intelligent Robot Engineering, Mokwon University, Daejeon, Republic of Korea (2009 ~ 2014)

Lectured in Introduction to Robotics, Robot Structure Analysis, Walking Robot Control, Design and Application of Microcontroller, and Engineering Mechanics

Research Experience

Research Scientist, Intelligent Robotics Group, NASA Ames Research Center, Moffet Field, California USA (Dec 2014 ~ Jan 2016)
- Safe Autonomous Systems Operations (SASO) Localization (Feb 2015 ~ Jan 2016)
  - Proposed a new integrated sensor model for image sensors like LIDAR, RADAR, sonar, and camera in order to facilitate sensor fusion
  - Designed a Bayesian-filtering-based framework for robust localization and mapping for UAVs based on multi-sensor data fusion in GPS-denied environments
  - Developed a framework for multi-sensor data fusion systems using various sensors such as LIDAR, RADAR, sonar, camera, and IMU
  - Built up a big picture for multi-sensor data fusion through extensive literature survey
- Robust Asteroid Detection Algorithm (RADA) (Dec 2014 ~ Sep 2015)
  - Designed algorithms based on statistical inference using F-statistic and ANOVA and robust estimation to simultaneously detect moving objects and their trajectories
  - Prototyped an intelligent software to detect near-earth asteroids (NEAs) based on temporal snapshots of pixel data of sky
  - Developed a simple framework for performance evaluations of other algorithms
  - Developed test cases for software verification and validation and successfully applied an automatic build system to RADA using a couple of languages and several external libraries and tools
Research Assistant, Korea Advanced Institute of Science and Technology (KAIST), Daejeon, Republic of Korea (Sep 2006 ~ Feb 2014)
- Real-time and Robust Vision-based Gesture Recognition System for Smart Media (May 2011 ~ Apr 2012)
  - Designed and implemented gesture recognition systems based on 2D image sensors for smart media such as smart TVs and smart phones
  - Developed and applied robust gesture recognition algorithms that are less vulnerable to variations in human, location, pose, and illumination
  - Designed a set of gestures to take recognition performance and ease of operation into consideration
  - Designed a flexible software framework that can be extended to various software and hardware platforms
- Oil Spill Protection (OSP) Robots (Sep 2009 ~ May 2010)
  - Devised a two-loop control scheme for local positioning by visual servoing and global position by GPS
  - Designed a robust tracking and docking algorithm based on reinforcement learning and disturbance rejection in highly uncertain environments
  - Implemented autonomous surface vehicles (ASVs) including hardware and software systems
  - Designed embedded and Windows applications for sensor fusion of IMU, GPS, and camera via wireless network and I2C
- Robot Grand Challenge 2009 in Korea (Mar 2009 ~ Sep 2009)
  - Implemented a mobile humanoid robot called AMIGO for the challenge, and then extended to a building tour-guide robot in combination with augmented reality (AR)
  - Designed a software framework for localization, navigation, speech recognition, object detection, and object recognition, etc.
  - Designed an error-tolerant software architecture to independently fulfill various S/W and H/W functions
  - Designed and integrated hardware including mechanical and electric parts: mobile platforms, a 6-DOF arm, various sensors, and controllers including various communication channels such as I2C, SPI, and socket
  - Designed embedded and Windows applications for sensor fusion of IMU, sonar, IR camera, and color camera
  - Extensively studied practical technologies for recognition of face, object, button, and elevator, etc.
- Software Development for Healthcare Robots (Nov 2006 ~ Oct 2008)
  - Designed and implemented a common robot software middleware platform for target healthcare robots (chair-bot, ride-bot, and lifecare-bot)
  - Developed an inference engine for body and emotional states based on several bio-signals using ensemble learning and SVM
  - Built-up a communication framework for interface with a variety of bio-signal sensors like ECG, temperature sensor, and blood pressure sensor
Research Assistant, Yonsei University, Seoul, Republic of Korea (Sep 1996 ~ Aug 1998)
- Development of Machining Tool based on Stewart Platform (Sep 1997 ~ Feb 1998)
  - Designed and implemented a machining tool based on Stewart Platform in order to precisely manufacture components and parts with free surface and exert enough power
  - Also designed and implemented a control system based on nonlinear control algorithm for complex in-parallel robot systems
- Development of 6-DOF Haptic Joystick using In-Parallel Mechanism (Sep 1996 ~ Dec 1997)
  - Developed a haptic master device for 6-DOF Schilling robot operating in nuclear atomic reactors
  - Designed the general-purpose master device as in-parallel mechanism to control all the serial and in-parallel slave robots
  - Adopted a master-slave system and implemented a 3D graphic simulation on workstation for tele-operation

Industrial Experience

Anditek, Co., Ltd. (Jan 2006 ~ Aug 2006)
- Development of Control Algorithms to Improve Accuracy and Stability of Linear Motor Systems
  - Developed control algorithms for high-precision positioning based on space vector modulation
AnyCasting, Co., Ltd. (Sep 2004 ~ Oct 2005)
- Development of a Defect Inspection System for Non-Destructive Testing (NDT) based on X-ray Images
  - Designed image processing algorithms to detect and localize defects of aircrafts
  - Developed a framework to deal with large-size, high-resolution X-ray images
- Development of a Volume Data Reconstruction and Visualization Software Framework for Medical Applications
  - Developed a 3D volume rendering system based on VTK library
Cubictek, Co., Ltd. (Sep 1999 ~ Oct 2003)
- Development of Robot Off-Line Programming (OLP) Systems, V-Robot
  - Designed and implemented a flexible analysis framework for kinematics and dynamics
  - Developed algorithms for motion planning and trajectory blending from scratch
  - Supported various robot programming languages based on a general-purpose intermediate language
  - Integrated realistic 3D simulation and collision detection
- Successful Application to Industrial Robots
  - Developed OLP systems for Cartesian, SCARA, and articulated robots of Hyundai Heavy Industries (HR series), Samsung Electronics (FARA series), Robostar, and Daewoo Heavy Industries
- Development of an Integrated Simulation Software System, V-World
  - Designed and developed a general-purpose simulation engine based on discrete event system specification (DEVS) formalism
  - Integrated all simulation products (V-Robot, V-HPS, V-PLC, V-ELEQ, V-Meca) into a single framework for virtual manufacturing
- Development of a Virtual Surgery System
  - Developed a software framework to reconstruct human organs from CT images and to visualize them
  - Designed a surface reconstruction algorithm based on marching cubes algorithm
Daewoo Heavy Industries, Co., Ltd. (Sep 1998 ~ Sep 1999)
- Development of a Machining Line for Automotive Engine Blocks of Daewoo Motors
S/W Consulting
- Korea Hydro and Nuclear Power (KHNP) Central Research Institute (2012)
  - Conducted optimization of safety analysis software system
- Korea Electric Power Corporation (KEPCO) Research Institute (2009 ~ 2010)
  - Conducted software restructuring and refactoring of safety analysis software system for nuclear power plant

S/W Engineering

S/W Analysis and Design

S/W Re-structuring and Refactoring

S/W Acceleration and Optimization

Patents

Plant Area Extraction System and Method Based on Deep Learning and Connectivity Graphs

Junsik Kim and Sang-Wook Lee

Korea Patent No. 102131243 (Jul 2020)

System and Method for Plant Leaf Identification

Sang-Wook Lee and Junsik Kim

US Patent No. US10679096B2 (Jun 2020), Korea Patent No. 101956158 (Mar 2019)

Engine Assembly Inspection System using Acceleration Signals and a Device Measuring the Signals

Tae-Hwi Lee and Sang-Wook Lee

Korea Patent No. 100997897 (Nov 2010)

Certificates

Certified Information System Auditor (CISA) (Oct 2010 ~ Jan 2025)

Information Systems Audit and Control Association (ISACA)

Project Management Professional (PMP) (Jul 2005 ~ Jul 2018)

Project Management Institute (PMI)

Awards and Scholarships

KAIST Scholarship, Korea Advanced Institute of Science and Technology (KAIST)
Entrance Scholarship, Yonsei University