Yongjae Lee

Yongjae Lee (이용재)
Ph.D. student majoring in ECE
Efficient, Secure and Intelligent Computing (ESIC) Laboratory
Johns Hopkins University
United States of America

Contact
E-mail: ylee236 (at) jh (dot) edu
nfyfamraa (at) gmail (dot) com
Homepage: https://nfyfamr.github.io
Github: https://github.com/nfyfamr
Linkedin: https://www.linkedin.com/in/yongjae-lee-nfyfamraa/

Research Interest

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Vision & Robotics

3D Reconstruction (NeRF), Localization and Mapping, Scene Understanding, Autonomous Robot, (Heterogeneous) Multi-robot Collaboration

Graphics & Interface

Virtual Reality (AR) / Augmented Reality (VR), Extended Reality (XR), Human Computer Interface

Education

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• Johns Hopkins University, August 2023 - Present
  • Doctor of Philosophy in Electrical and Computer Engineering
    • Efficient, Secure and Intelligent Computing (ESIC) Laboratory
• Arizona State University (attended), August 2022 - August 2023
  • Doctor of Philosophy in Electrical Engineering
• Yonsei University, March 2019 - August 2021
  • Master of Science in Mechanical Engineering
    • Thesis: Web-based Remote XR Collaboration Using Real-time Digital Twinning of Workspace (Advisor: Prof. Soo-Hong Lee & Dr. Byounghyun Yoo), 2021 [Yonsei University Library]
• Seoul National University of Science and Technology (SeoulTech), March 2011 – February 2018
  • Bachelor of Science in Computer Science and Engineering
    • Capstone Project: UrEgo (a rogue-like 2D top-down view mobile game) [code]

Publication

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Journal Paper

• (Under review) Eunhee Chang, Yongjae Lee, and Byounghyun Yoo, Efficient VR-AR Communication Method using Virtual Replicas in XR Remote Collaboration

• Eunhee Chang, Yongjae Lee, and Byounghyun Yoo, A User Study on the Comparison of View Interfaces for VR-AR Communication in XR Remote Collaboration, International Journal of Human–Computer Interaction (IJHCI), 2023.
  [bib] [pdf] [doi]

• Yongjae Lee and Byounghyun Yoo, XR Collaboration beyond Virtual Reality: Work in the Real World, Journal of Computational Design and Engineering (JCDE), 8(2), 756–772, 2021.
  [bib] [pdf] [doi]

Conference Paper (peer reviewed)

• Yongjae Lee, Li Yang, and Deliang Fan, MF-NeRF: Memory Efficient NeRF with Mixed-Feature Hash Table, arXiv, 2023
  [arXiv]

• Yongjae Lee, Byounghyun Yoo, and Soo-Hong Lee, Sharing Ambient Objects Using Real-time Point Cloud Streaming in Web-based XR Remote Collaboration, The 26th International Conference on 3D Web Technology (Web3D ’21), November 8–12, 2021, Pisa, Italy.
  [bib] [pdf] [doi] [video]

• Yongjae Lee, Changhyun Moon, Heedong Ko, Soo-Hong Lee, and Byounghyun Yoo, Unified Representation for XR Content and Its Rendering Method, The 25th International Conference on 3D Web Technology (Web3D ’20), November 9–13, 2020, Seoul, Korea.
  [bib] [pdf] [doi] [video]

• Daeil Seo, Yongjae Lee, and Byounghyun Yoo, Webizing Interactive CAD Review System Using Super Multiview Autostereoscopic Displays, HCI International 2017 – Posters’ Extended Abstracts (pp. 62–67). Springer International Publishing, 2017.
  [bib] [pdf] [doi]

Presentation [Pr] & Poster [Po] & Tutorial [Tu]

• [Po] Eunhee Chang, Yongjae Lee, and Byounghyun Yoo, Comparing Context-sharing Interfaces in XR Remote Collaboration, 2023 IEEE Conference on Virtual Reality and 3D User Interfaces Abstracts and Workshops, March 25-29, 2023, Shanghai

• [Po] Yeongbeom Hwang, Suyeong Kim, Yongjae Lee, and Byounghyun Yoo, A method for web-based remote XR collaboration with real-time 360 video and point cloud streaming, Winter Conference of Society for Computational Design and Engineering, February 9-12, 2022, Jeju

• [Tu] Byounghyun Yoo, Yongjae Lee, and Changhyun Moon, WXR: Remote Cooperation using WebXR Technology, The 25th International Conference on 3D Web Technology (Web3D ’20), November 9–13, 2020, Seoul, Korea

• [Pr] Seungyeon Huh, Yongjae Lee, Heedong Ko, and Byounghyun Yoo, Decentralized architecture and its application of WebXR for scalability of concurrent collaboration in XR environments, Winter Conference of Society for Computational Design and Engineering, January 23–26, 2019, Pyeongchang, Korea

• [Po] Yongjae Lee, Byounghyun Yoo, and Heedong Ko, A WebXR-based method for asymmetric collaboration between local users and remote subject-matter experts, Summer Conference of Society for Computational Design and Engineering, August 21–24, 2018, Jeju, Korea “Best Poster Award”

• [Po] Jongho Lee, Daeil Seo, Byounghyun Yoo, Heedong Ko, and Yongjae Lee, Augmented reality-based maintenance system using Web technologies, Winter Conference of Society for Computational Design and Engineering, January 23–26, 2018, Hoengseong, Korea

• [Po] Wanho Im, Jongho Lee, Yongjae Lee, Daeil Seo, and Byounghyun Yoo, Personalized sleep environment control system using IoT, Summer Conference of Society for Computational Design and Engineering, August 17–18, 2017, Seoul, Korea

• [Pr] Yongjae Lee, Daeil Seo, Doyeon Kim, and Byounghyun Yoo, Interactive CAD Review System for Super Multiview Autostereoscopic Displays based on Web Technologies, Winter Conference of Society for Computational Design and Engineering, February 8–10, 2017, Pyeongchang, Korea

Patents

• (In progress) Yongjae Lee and Byounghyun Yoo, Method and Apparatus for XR content generation using point cloud filtering through comparison with a 3D model, Republic of Korea

• Yongjae Lee and Byounghyun Yoo, Method and Apparatus for entity tracking based on feature data independent of augmented reality engine, Republic of Korea, 2021, Patent No. 17/565,455

• Yongjae Lee and Byounghyun Yoo, Method and device for providing virtual content on virtual space based on common coordinate, United States, 2021, Patent No. 17/607,402

• Yongjae Lee and Byounghyun Yoo, Integrated rendering method for various extended reality modes and device having thereof, United States, 2020, Patent No. 17/036,119

Project

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	Memory efficient NeRF August 2022 - March 2023 Arizona State University Developed a mixed-feature sharing method among hierarchical grids for synthesizing novel views Tag: NeRF, 3D Reconstruction Computer Vision [code]
	Autonomous driving project August 2021 - September 2021 Team project in the Autonomous Driving Course in Grepp, Inc. Developed an autonomous driving system for a remote control car Main contribution: SLAM (Cartographer) tuning, image recognition, 3D visualization Funded by the Ministry of Employment and Labor (MOEL) Tag: Self-driving, SLAM, Computer Vision [code] [video]
	Digital twinning of a physical environment in XR collaboration December 2020 - July 2021 Yonsei University, Seoul, Republic of Korea An implementation for master’s thesis Developed a collaboration system that shares the information of an AR user’s physical environment using LiDAR in real time Advisor: Prof. Soo-Hong Lee and Dr. Byounghyun Yoo Tag: XR Collaboration, Real-time 3D Scanning & Streaming [code] [video]
	Human Pose Element Estimator April 2020 - June 2020 Yonsei University, Seoul, Republic of Korea The final project of the Estimation Theory class Developed a human pose element estimator using 3D ConvNet and LSTM Tag: Deep Learning, 3D Recognition [class report]
	Agile Maintenance Platform using Asymmetric Collaborative 3D Printing for Weapons System August 2016 - July 2019 Korea Institute of Science and Technology Developed a web-based XR remote maintenance platform Project inspector: Dr. Byounghyun Yoo Funded by the National Research Council of Science and Technology (NST) Tag: XR Collaboration, Web-based XR [project] [video1] [video2]
	Capstone Project: UrEgo March 2017 - December 2017 Seoul National University of Science and Technology Developed a rogue-like 2D top-down view mobile game Tag: Mobile Game, Unity5 [code] [video]
	Bitcoin Price Predictor November 2017 - December 2017 Seoul National University of Science and Technology The final project of the Big data Analysis class Tested various prediction models for bitcoin price Tag: Big data Analysis, Linear Regression, LSTM
	Digital Door Lock Circuit Design September 2017 - December 2017 Seoul National University of Science and Technology The final project of the Computer System Design class Designed a digital door lock circuit Tag: Digital Logic Design, Circuit Design [code] [video]
	Webized 3D Content Streaming System for Autostereoscopic 3D Displays May 2017 - June 2017 Korea Institute of Science and Technology Developed a practical application with a super multiview autostereoscopic display (SMV display) Project inspector: Dr. Byounghyun Yoo Funded by the Ministry of Science, ICT and Future Planning (MSIP) Tag: Webizing, RGBD Streaming, SMV Display [video]
	Rule of Three May 2017 - June 2017 Seoul National University of Science and Technology The final project of the Intelligent System Software Simulate 'the rule of three' theory in crowd psychology, using NetLogo Tag: Agent-based Modeling, NetLogo [code]
	Morse Code Translator Program May 2017 - June 2017 Seoul National University of Science and Technology The final project of the Embedded Software Developed a morse code translator program for X-Hyper270A board and Cholesteric LCD (CLCD) display Tag: Embedded Software Programming, CLCD [code] [video]
	Web-based CAD Review System with Autostereoscopic 3D Display January 2017 - February 2017 Korea Institute of Science and Technology Developed a practical application with a super multiview autostereoscopic display (SMV display) Project inspector: Dr. Byounghyun Yoo Funded by the Ministry of Science, ICT and Future Planning (MSIP) Tag: Webizing, VR Collaboration, Hand Tracking Interface, SMV Display [video]
	Interactive 3D Dodge Game with Autostereoscopic 3D Display December 2016 - January 2017 Korea Institute of Science and Technology Developed a practical application with a super multiview autostereoscopic display (SMV display) Project inspector: Dr. Byounghyun Yoo Funded by the Ministry of Science, ICT and Future Planning (MSIP) Tag: Webizing, Face Tracking Game, SMV Display
	Chattibrary May 2016 - June 2016 Seoul National University of Science and Technology The final project of the Windows Programming class Developed a chatting-interface-based book management system, using Microsoft Foundation Classes (MFC) Tag: Windows Application Programming, MFC [code]
	Fun Funding : Crowd Funding Web Site May 2016 - May 2016 Seoul National University of Science and Technology Team project conducted in the Web Programming class Role: client-side UI development Developed a crowdfunding platform web site Tag: Web Programming, Client-side UI design
	Integrated Development Environment Established ON the web (IDEEON) November 2015 - December 2015 Seoul National University of Science and Technology Team project conducted in the Advanced Web Programming class Role: system design, REST API design, server development, client UI Developed a cloud-based C++/Java development environment Tag: Web-based IDE [code]
	Graphing Calculator October 2011 - November 2011 Seoul National University of Science and Technology Team project conducted in the Introduction to Programming(2) class Role: main developper Developed a calculator that draws a graph of the equation entered by the user, using Microsoft Foundation Classes (MFC) Tag: Windows Application Programming, MFC [code]