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Nak-Jun Sung, Ph.D.

Name
Nak-Jun Sung, Ph.D.
Faculty Appointment:
(title, department)
Assistant Professor, Department of Public Health & AI, NCC-GCSP, NCC
Area of Expertise
Artificial Intelligence, Image Processing, Large-Scale Models, Computer Graphics, AR/VR/XR
Contact no
031-920-2473
E-mail
njsung@ncc.re.kr
Work Experience
Nov 2024 - : Researcher, Research Institute, National Cancer Center
Mar 2022 - Nov 2023 : Senior Research Scientist, Research Institute, Teneleven
May 2020 - Feb 2022 : Senior Research Scientist, R&D Center, Hutom
Jul 2018 - Mar 2019 : CEO, All4One
Educational Background
Mar 2018 - Aug 2024 : Ph.D., Software Convergence, Soonchunhyang University
Sep 2016 - Feb 2018 : M.S., Computer Science, Soonchunhyang University
Mar 2012 - Aug 2016 : B.S., Computer Software Engineering, Soonchunhyang University
Research Interests
Large-scale Vision-Language Model (VLM) for medical report generation.
Computer-aided diagnosis (classification, segmentation).
Self-Supervised Learning (SSL).
Organ 3D reconstruction and visualization.
Achievements
Journal Papers

Sung, N. J., Ma, J., Hor, K., Kim, T., Va, H., Choi, Y. J., & Hong, M. (2025). Real-Time Physics Simulation Method for XR Application. Computers, 14(1), 17.

Hor, K., Sung, N. J., Ma, J., Choi, M. H., & Hong, M. (2025). A Fast Parallel Processing Algorithm for Triangle Collision Detection based on AABB and Octree Space Slicing in Unity3D. IEEE Access.

Ma, J., Sung, N. J., Choi, M. H., & Hong, M. (2024). Performance Comparison of Vertex Block Descent and Position Based Dynamics Algorithms Using Cloth Simulation in Unity. Applied Sciences, 14(23), 11072.

Yoon, J., Hong, S., Hong, S., Lee, J., Shin, S., Park, B., Sung, N., ... & Choi, M. K. (2022, September). Surgical scene segmentation using semantic image synthesis with a virtual surgery environment. In International Conference on Medical Image Computing and Computer-Assisted Intervention (pp. 551-561). Cham: Springer Nature Switzerland.

Kim, J., Rim, B., Sung, N. J., & Hong, M. (2020). Left or Right Hand Classification from Fingerprint Images Using a Deep Neural Network. Computers, Materials & Continua, 63(1).

Wang, C., Kim, Y., Lee, S. H., Sung, N. J., Min, S. D., & Choi, M. H. (2020). Activity and safety recognition using smart work shoes for construction worksite. KSII Transactions on Internet and Information Systems (TIIS), 14(2), 654-670.

Rim, B., Sung, N. J., Min, S., & Hong, M. (2020). Deep learning in physiological signal data: A survey. Sensors, 20(4), 969.

Sung, N. J., Ma, J., Choi, Y. J., & Hong, M. (2019). Real-time augmented reality physics simulator for education. Applied Sciences, 9(19), 4019.

Kim, Y., Moon, J., Sung, N. J., & Hong, M. (2019). Correlation between selected gait variables and emotion using virtual reality. Journal of Ambient Intelligence and Humanized Computing, 1-8.

Sung, N. J., Transue, S., Kim, M., Choi, Y. J., Choi, M. H., & Hong, M. (2018). Optimization of material properties for coherent behavior across multi-resolution cloth models. KSII Transactions on Internet and Information Systems (TIIS), 12(8), 4072-4089.

Kim, M., Sung, N. J., Kim, S. J., Choi, Y. J., & Hong, M. (2019). Parallel cloth simulation with effective collision detection for interactive AR application. Multimedia Tools and Applications, 78, 4851-4868.

Hong, M., Choi, Y. H., Sung, N. J., & Choi, Y. J. (2017). Design and implementation of cloth simulation using GLSL 4.3. Advanced Science Letters, 23(10), 10384-10389.

Sung, N. J., Hong, M., Lee, S. H., & Choi, Y. J. (2017). Simulation of deformable objects using GLSL 4.3. KSII Transactions on Internet and Information Systems (TIIS), 11(8), 4120-4132.


Patents

Apparatus and method for matching an actual surgical image with a 3d-based virtual simulated surgical image, US, application, 2024.09, Principal Inventor

Device and method for generating virtual pneumoperitoneum model of patient, US, application, 2024. 07, Principal Inventor

Apparatus and method for determining insertion position of trocar on three-dimensional virtual pneumoperitoneum model of patient, US, application, 2024.05, Principal Inventor

Apparatus and method for matching the real surgical image with the 3D-based virtual simulated surgical image based on POI definition and phase recognition, registration, 2024.05, Principal Inventor

도로 자동 생성장치, KO, registration, 2024.07, Principal Inventor

환자의 3차원 가상 기복 모델 상에 트로카의 삽입 위치를 결정하는 장치 및 방법, KO, registration, 2024.05, Principal Inventor

수술 도구 및 장기 인식 학습 훈련을 위한 학습 데이터 수집 장치 및 방법, KO, registration, 2024.04, Co-inventor

POI 정의 및 Phase 인식 기반의 실제 수술 영상과 3D 기반의 가상 모의 수술 영상을 정합하는 장치 및 방법, KO, registration, 2024.01, Co-inventor

보행 데이터 기반 운동 추천 시스템 및 방법, KO, registration, 2019.12, Principal Inventor

증강현실 영상을 이용한 응급처치 평가 시스템 및 방법, KO, registration, 2019.09, Co-inventor