Chin Boon Chng

Chin Boon Chng

Research Fellow at the National University of Singapore

Publications

Journal Articles

An enhanced self-attention and A2J approach for 3D hand pose estimation

Published in Multimedia Tools and Applications, 2021

This paper focuses on augmenting convolution with self-attention to capture long-range dependencies in a depth image and extends anchor points to the depth dimension to regress 3D hand joint locations.

Recommended citation: M-Y Ng., C.-B. Chng, W-K Koh, CK Chui, MCH Chua. "An enhanced self-attention and A2J approach for 3D hand pose estimation." Multimedia Tools and Applications, 2021.

VR and AR in human performance research―An NUS experience

Published in Virtual Reality & Intelligent Hardware, 2020

This paper surveys current research trends, findings and limitation of VR and AR in its effect on human performance, specifically in Singapore, and our experience in the National University of Singapore (NUS).

Recommended citation: J.-H. Yin, C.-B. Chng, P.-M. Wong, N. Ho, M. Chua, and C.-K. Chui, "VR and AR in human performance research―An NUS experience," Virtual Reality & Intelligent Hardware, vol. 2, pp. 381-393, 2020.

Robot-assisted flexible needle insertion using universal distributional deep reinforcement learning

Published in International Journal of Computer Assisted Radiology and Surgery, 2019

This paper is about a new algorithm called universal distributional Q-learning (UDQL) to learn a stable steering policy and perform risk management by visualizing the learned Q-value distribution.

Recommended citation: X. Tan, Y. Lee, C.-B. Chng, K.-B. Lim, and C.-K. Chui, "Robot-assisted flexible needle insertion using universal distributional deep reinforcement learning," International Journal of Computer Assisted Radiology and Surgery, vol. 15, pp. 341-349, 2020.

Robot-assisted training in laparoscopy using deep reinforcement learning

Published in IEEE Robotics and Automation Letters, 2019

This paper is about a new robot-assisted surgical training system which is designed to improve the practical skills of surgeons through intrapractice feedback and demonstration from both human experts and reinforcement learning (RL) agents.

Recommended citation: X Tan, CB Chng, Y Su, KB Lim, CK Chui, "Robot-Assisted Training in Laparoscopy Using Deep Reinforcement Learning", IEEE Robotics and Automation Letters 4 (2), 485-492, 2019.

Augmented reality guidance with multimodality imaging data and depth-perceived interaction for robot-assisted surgery

Published in Robotics, 2017

This paper is about the development of a robot-assisted surgical system with interactive surgical guidance using tablet-based AR with a Kinect sensor for three-dimensional (3D) localization of patient anatomical structures and intraoperative 3D surgical tool navigation.

Recommended citation: R Wen, CB Chng, CK Chui, "Augmented Reality Guidance with Multimodality Imaging Data and Depth-Perceived Interaction for Robot-Assisted Surgery", Robotics 6 (2), 13, 2017.

Cognitive engine for robot-assisted radio-frequency ablation system

Published in Acta Polytechnica Hungarica, 2017

This paper is the extended work of X. Tan, C.-B. Chng, B. Duan, Y. Ho, R. Wen, X. Chen, et al., “Design and implementation of a patient-specific cognitive engine for robotic needle insertion,” in Systems, Man, and Cybernetics (SMC), 2016 IEEE International Conference on, 2016, pp. 000560-000565.

Recommended citation: X Tan, CB Chng, B Duan, Y Ho, R Wen, X Chen, KB Lim, CK Chui, "Cognitive engine for robot-assisted radio-frequency ablation system", Acta Polytech Hung 14 (1), 129-145, 2017.

Shared control of a medical robot with haptic guidance

Published in International Journal of Computer Assisted Radiology and Surgery, 2016

This paper is about an innovative shared control method for robotic minimally invasive surgery system, in which vision and haptic feedback are incorporated to provide guidance cues to the clinician during surgery.

Recommended citation: L. Xiong, C. B. Chng, C. K. Chui, P. Yu, and Y. Li, "Shared control of a medical robot with haptic guidance", International journal of computer assisted radiology and surgery, vol. 12, pp. 137-147, 2017.

Hand gesture guided robot-assisted surgery based on a direct augmented reality interface

Published in Computer Methods and Programs in Biomedicine, 2014

This paper proposes a cooperative surgical robot system, guided by hand gestures and supported by an augmented reality (AR)-based surgical field, for robot-assisted percutaneous treatment.

Recommended citation: R. Wen, W.-L. Tay, B. P. Nguyen, C.-B. Chng, and C.-K. Chui, "Hand gesture guided robot-assisted surgery based on a direct augmented reality interface," Computer methods and programs in biomedicine, vol. 116, pp. 68-80, 2014.

Development of a microclip for laryngeal microsurgery: initial animal studies

Published in The Laryngoscope, 2012

This paper is a follow up to the previous work on bio-bioabsorbable clips for vocal fold wound closure with in-vivo studies

Recommended citation: D. P. Lau, C. B. Chng, J. Q. Choo, N. Teo, R. M. Bunte, and C. K. Chui, "Development of a microclip for laryngeal microsurgery: initial animal studies," The Laryngoscope, vol. 122, pp. 1809-1814, 2012.

A bioabsorbable microclip for laryngeal microsurgery: Design and evaluation

Published in Acta Biomaterialia, 2012

This paper is about the design and development of bio-bioabsorbable clips made from magnesium for vocal fold wound closure.

Recommended citation: C. Chng, D. Lau, J. Choo, and C. Chui, "A bioabsorbable microclip for laryngeal microsurgery: Design and evaluation," Acta biomaterialia, vol. 8, pp. 2835-2844, 2012.

Design of a mechanical larynx with agarose as a soft tissue substitute for vocal fold applications

Published in Journal of Biomechanical Engineering, 2010

This paper is about the a mechanical model of a larynx, using agarose as a vocal fold tissue subsitute.

Recommended citation: J. Choo, D. Lau, C. Chui, T. Yang, C. Chng, and S. Teoh, "Design of a mechanical larynx with agarose as a soft tissue substitute for vocal fold applications," Journal of biomechanical engineering, vol. 132, p. 065001, 2010.

Conference Papers

Detection and Classification of Pneumonia from Lung Ultrasound Images

Published in 2020 5th International Conference on Communication, Image and Signal Processing (CCISP), 2020

This work investigates VGG, ResNet and EfficientNet networks to accurately classify Lung Ultrasound images of pneumonia according to different clinical stages based on self-made LUS datasets.

Recommended citation: J. Zhang, C. B. Chng, X. Chen, C. Wu, M. Zhang, Y. Xue, et al., "Detection and Classification of Pneumonia from Lung Ultrasound Images," in 2020 5th International Conference on Communication, Image and Signal Processing (CCISP), 2020, pp. 294-298.

Simulation of Robot-Assisted Flexible Needle Insertion Using Deep Q-Network

Published in 2019 IEEE International Conference on Systems, Man and Cybernetics (SMC), 2019

This work focuses on a new path planning approach with DQN to implement automatic needle insertion using a surgical robot.

Recommended citation: Y. Lee, X. Tan, C.-B. Chng, and C.-K. Chui, "Simulation of Robot-Assisted Flexible Needle Insertion Using Deep Q-Network," in 2019 IEEE International Conference on Systems, Man and Cybernetics (SMC), 2019, pp. 342-346.

Learning laparoscopic surgery by imitation using robot trainer

Published in 2011 IEEE International Conference on Robotics and Biomimetics, 2020

This work focuses on robot learning by imitation for surgical training.

Recommended citation: C.-K. Chui, C.-B. Chng, T. Yang, R. Wen, W. Huang, J. Liu, et al., "Learning laparoscopic surgery by imitation using robot trainer," in Robotics and Biomimetics (ROBIO), 2011 IEEE International Conference on, 2011, pp. 2981-2986.

Model-based design analysis for programmable remote center of motion in minimally invasive surgery

Published in 2010 IEEE Conference on Robotics, Automation and Mechatronics, 2020

This work focuses on the kinematic modeling of mechanism design for programmable RCM in MIS.

Recommended citation: L. Yang, C. Chng, C. Chui, and D. Lau, "Model-based design analysis for programmable remote center of motion in minimally invasive surgery," in Robotics Automation and Mechatronics (RAM), 2010 IEEE Conference on, 2010, pp. 84-89.

Blockchain for cyber-physical system in manufacturing

Published in 2019 Tenth International Symposium on Information and Communication Technology, 2019

This work focuses on a blockchain manufacturing framework that involves the utilization of secondary validation and collaborative distribution concepts.

Recommended citation: N. Ho, P.-M. Wong, R.-J. Soon, C.-B. Chng, and C.-K. Chui, "Blockchain for Cyber-Physical System in Manufacturing," in Proceedings of the Tenth International Symposium on Information and Communication Technology, 2019, pp. 385-392.

A cyber-physical system approach to immobilization of patient on radiation treatment

Published in 2019 IEEE 23rd International Conference on Intelligent Engineering Systems (INES), 2019

This work focuses on the development of a novel cyber-physical system approach with a vision-infrared based motorized positioning system (VIMPS) and soft robotic fingers to both monitor and correct the position of a patient’s head.

Recommended citation: C.-B. Chng, D. W.-T. Chia, Y. Cao, K. Yo, M. G. Fujie, and C.-K. Chui, "A Cyber-Physical System Approach to Immobilization of Patient on Radiation Treatment," in 2019 IEEE 23rd International Conference on Intelligent Engineering Systems (INES), 2019, pp. 000153-000158.

Modeling and simulation of a Remote Center of Motion mechanism

Published in 2016 IEEE Region 10 Conference (TENCON), 2016

This work focuses on the modelling of a Remote Center of Motion (RCM) spherical mechanism consisting of two semi-circular arches

Recommended citation: C.-B. Chng, B. Duan, and C.-K. Chui, "Modeling and simulation of a Remote Center of Motion mechanism," in Region 10 Conference (TENCON), 2016 IEEE, 2016, pp. 1755-1758.

Design and implementation of a patient-specific cognitive engine for robotic needle insertion

Published in 2016 IEEE International Conference on Systems, Man, and Cybernetics (SMC), 2016

This work focuses on a new framework of a cognitive engine to supervise and regulate the surgical processes.

Recommended citation: X. Tan, C.-B. Chng, B. Duan, Y. Ho, R. Wen, X. Chen, et al., "Design and implementation of a patient-specific cognitive engine for robotic needle insertion," in Systems, Man, and Cybernetics (SMC), 2016 IEEE International Conference on, 2016, pp. 000560-000565.

Image-guided robotic system for radiofrequency ablation of large liver tumor with single incision

Published in 2015 12th International Conference on Ubiquitous Robots and Ambient Intelligence (URAI), 2015

This work focuses on the development of a surgical robot system incorporating medical image information and surgeon’s planning knowledge to realize a minimally invasive procedure for large liver tumor treatment through a single incision.

Recommended citation: B. Duan, R. Wen, C.-B. Chng, W. Wang, P. Liu, J. Qin, et al., "Image-guided robotic system for radiofrequency ablation of large liver tumor with single incision," in Ubiquitous Robots and Ambient Intelligence (URAI), 2015 12th International Conference on, 2015, pp. 284-289.

Automation of retinal surgery: A shared control robotic system for laser ablation

Published in 2015 IEEE International Conference on Information and Automation, 2015

This work focuses on the design and development of a robotic retinal surgery system, capable of varying levels of automation, from a fully autonomous plan execution to shared or manual control.

Recommended citation: C.-B. Chng, Y. Ho, and C.-K. Chui, "Automation of retinal surgery: A shared control robotic system for laser ablation," in Information and Automation, 2015 IEEE International Conference on, 2015, pp. 1957-1962.

Experiments of carbon nanocomposite implants for patient specific ENT care

Published in The 7th IEEE International Conference on Nano/Molecular Medicine and Engineering, 2013

This work focuses on the development of a patient specific carbon nanotube composite artificial tracheal implant and its testing on a porcine model in vivo.

Recommended citation: M. Chua, C.-K. Chui, C.-B. Chng, and D. Lau, "Experiments of carbon nanocomposite implants for patient specific ENT care," in Nano/Molecular Medicine and Engineering (NANOMED), 2013 IEEE 7th International Conference on, 2013, pp. 72-76.

Real-time Simulation of Bleeding and Smoke Effects in Virtual Reality Environment

Published in The 10th IASTED International Conference on Biomedical Engineering, 2013

This work presents a method for the generation of realistic bleeding effects in a real-time virtual simulation environment

Recommended citation: Y. F. Eng, Y. Su, C. W. Lim, G. M. Ng, S. Kumar, W. Huang, et al., "Real-time Simulation of Bleeding and Smoke Effects in Virtual Reality Environment," in The 10th IASTED International Conference on Biomedical Engineering, Innsbruck, Austria, 2013.

Robot-assisted RF ablation with interactive planning and mixed reality guidance

Published in 2012 IEEE/SICE International Symposium on System Integration (SII), 2012

This work focuses on a interactive planning system with mixed reality for robot-assisted RF ablation.

Recommended citation: R. Wen, C.-B. Chng, C.-K. Chui, K.-B. Lim, S.-H. Ong, and S.-Y. Chang, "Robot-assisted RF ablation with interactive planning and mixed reality guidance," in System Integration (SII), 2012 IEEE/SICE International Symposium on, 2012, pp. 31-36.

Parallel processing for object oriented robotic simulation of tracheal-oesophageal puncture

Published in 2011 IEEE/SICE International Symposium on System Integration (SII), 2011

This work focuses on the simulation of a TEP procedure using parallel processing.

Recommended citation: C.-K. Chui, C.-B. Chng, and D. P. Lau, "Parallel processing for object oriented robotic simulation of tracheal-oesophageal puncture," in System Integration (SII), 2011 IEEE/SICE International Symposium on, 2011, pp. 144-149.

A novel handheld device for tracheo-esophageal puncture and prosthesis insertion

Published in 2011 IEEE/SICE International Symposium on System Integration (SII), 2011

This work focuses on an automated handheld device for TEP.

Recommended citation: C.-B. Chng, C.-K. Chui, and D. P. Lau, "A novel handheld device for tracheo-esophageal puncture and prosthesis insertion," in System Integration (SII), 2011 IEEE/SICE International Symposium on, 2011, pp. 150-155.