Chau-Wai Wong

NTK-DFL: Enhancing decentralized federated learning in heterogeneous settings via neural tangent kernel

International Conference on Machine Learning.

PUF-Augmented QR: Harnessing QR Code Background for Surface Authentication Via Physically Unclonable Features (PUFs)

Cornett, E., Raulston, W., Seuster, E., Stiff, H., Datta, P., & Wong, C.-W. (2025, August 6).

PortLLM: Personalizing evolving large language models with training-free and portable model patches

International Conference on Learning Representations.

SCALE: Towards collaborative content analysis in social science with large language model agents and human intervention

Annual Meeting of the Association for Computational Linguistics.

Tailoring generative AI chatbots for multiethnic communities in disaster preparedness communication: extending the CASA paradigm

Zhao, X., Sun, Y., Liu, W., & Wong, C.-W. (2025, January 1). Journal of Computer-Mediated Communication, Vol. 30.

TikTok engagement traces over time and health risky behaviors: Combining data linkage and computational methods

Zhao, X., & Wong, C.-W. (2025, July 5). Telematics and Informatics, Vol. 101.

3D Spectrum Awareness for Radio Dynamic Zones Using Kriging and Matrix Completion

Rahman, M., Maeng, S. J., Güvenç, İ., & Wong, C.-W. (2024, May 13). 2024 IEEE INTERNATIONAL SYMPOSIUM ON DYNAMIC SPECTRUM ACCESS NETWORKS, DYSPAN 2024, pp. 439–446.

A Comparative Study of Principled rPPG-Based Pulse Rate Tracking Algorithms for Fitness Activities

Zhu, Q., Wong, C.-W., Lazri, Z. M. B., Chen, M., Fu, C.-H., & Wu, M. (2024, August 13). IEEE Transactions on Biomedical Engineering, Vol. 72, pp. 152–165.

Analysis of Coding Gain Due to In-Loop Reshaping

Wong, C.-W., Fu, C.-H., Xu, M., & Su, G.-M. (2024, January 1). IEEE Transactions on Image Processing, Vol. 33, pp. 3765–3777.

Enabling Paper-Based Surface Authentication via Digital Twin and Experimental Verification

Datta, P., Wong, C.-W., & Wu, M. (2024, August 7). 2024 IEEE 7TH INTERNATIONAL CONFERENCE ON MULTIMEDIA INFORMATION PROCESSING AND RETRIEVAL, MIPR 2024, pp. 430–438.

High-Speed Receiver Transient Modeling with Generative Adversarial Networks

Muharaf: Manuscripts of handwritten Arabic dataset for cursive text recognition

Advances in Neural Information Processing Systems, 58525–58538.

Analysis of ENF Signal Extraction From Videos Acquired by Rolling Shutters

Choi, J., Wong, C.-W., Su, H., & Wu, M. (2023, January 1). IEEE Transactions on Information Forensics and Security, Vol. 18, pp. 4229–4242.

Automated measures of sentiment via transformer- and lexicon-based sentiment analysis (TLSA)

Zhao, X., & Wong, C.-W. (2023, November 21). Journal of Computational Social Science, Vol. 11.

Gradient obfuscation gives a false sense of security in federated learning

USENIX Security Symposium 2023.

Group Testing With Side Information via Generalized Approximate Message Passing

Cao, S.-J., Goenka, R., Wong, C.-W., Rajwade, A., & Baron, D. (2023, January 1). IEEE Transactions on Signal Processing, Vol. 71, pp. 2366–2375.

Remote Blood Oxygen Estimation From Videos Using Neural Networks

Mathew, J., Tian, X., Wong, C.-W., Ho, S., Milton, D. K., & Wu, M. (2023, January 12). IEEE Journal of Biomedical and Health Informatics, Vol. 27, pp. 3710–3720.

Thermal Estimation for 3D-ICs Through Generative Networks

A Multi-Channel Ratio-of-Ratios Method for Noncontact Hand Video Based SpO$_2$ Monitoring Using Smartphone Cameras

Tian, X., Wong, C.-W., Ranadive, S. M., & Wu, M. (2022, February 1). IEEE Journal of Selected Topics in Signal Processing, Vol. 2.

Communication-Efficient Federated Learning via Predictive Coding

Yue, K., Jin, R., Wong, C.-W., & Dai, H. (2022, January 13). IEEE Journal of Selected Topics in Signal Processing, Vol. 4.

Contact-Free Simultaneous Sensing of Human Heart Rate and Canine Breathing Rate for Animal Assisted Interactions

Holder, T., Rahman, M., Summers, E., Roberts, D., Wong, C.-W., & Bozkurt, A. (2022, December 5). NINTH INTERNATIONAL CONFERENCE ON ANIMAL-COMPUTER INTERACTION, ACI 2022.

Federated Learning via Plurality Vote

Yue, K., Jin, R., Wong, C.-W., & Dai, H. (2022, December 7). IEEE Transactions on Neural Networks and Learning Systems, Vol. 12.

Invisible Geolocation Signature Extraction From a Single Image

Choi, J., Wong, C.-W., Hajj-Ahmad, A., Wu, M., & Ren, Y. (2022, January 1). IEEE Transactions on Information Forensics and Security, Vol. 6.

Mismatched Estimation in the Distance Geometry Problem

Abdelkhalek, M., Baron, D., & Wong, C.-W. (2022, October 31). 2022 56TH ASILOMAR CONFERENCE ON SIGNALS, SYSTEMS, AND COMPUTERS, pp. 1031–1035.

Modeling of Adaptive Receiver Performance Using Generative Adversarial Networks

Neural Tangent Kernel Empowered Federated Learning

International Conference on Machine Learning (ICML).

Power Signature for Multimedia Forensics

Hajj-Ahmad, A., Wong, C.-W., Choi, J., & Wu, M. (2022, January 1). (Ed., Ed.). Advances in Computer Vision and Pattern Recognition, pp. 235–280.

RxGAN: Modeling High-Speed Receiver through Generative Adversarial Networks

Kashyap, P., Gajjar, A., Choi, Y., Wong, C.-W., Baron, D., Wu, T., … Franzon, P. (2022, September 6). MLCAD '22: PROCEEDINGS OF THE 2022 ACM/IEEE 4TH WORKSHOP ON MACHINE LEARNING FOR CAD (MLCAD).

Contact Tracing Enhances the Efficiency of Covid-19 Group Testing

Goenka, R., Cao, S.-J., Wong, C.-W., Rajwade, A., & Baron, D. (2021, May 13). 2021 IEEE INTERNATIONAL CONFERENCE ON ACOUSTICS, SPEECH AND SIGNAL PROCESSING (ICASSP 2021).

High Speed Receiver Modeling Using Generative Adversarial Networks

Kashyap, P., Pitts, W. S., Baron, D., Wong, C.-W., Wu, T., & Franzon, P. D. (2021, October 17). IEEE 30TH CONFERENCE ON ELECTRICAL PERFORMANCE OF ELECTRONIC PACKAGING AND SYSTEMS (EPEPS 2021).

Learning Your Heart Actions From Pulse: ECG Waveform Reconstruction From PPG

Zhu, Q., Tian, X., Wong, C.-W., & Wu, M. (2021, August 4). IEEE Internet of Things Journal, Vol. 12.

On Microstructure Estimation Using Flatbed Scanners for Paper Surface-Based Authentication

Liu, R., & Wong, C.-W. (2021, January 1). IEEE Transactions on Information Forensics and Security, Vol. 16, pp. 3039–3053.

Toward Effective Automated Content Analysis via Crowdsourcing

Wu, J., Wong, C.-W., Zhao, X., & Liu, X. (2021, June 9). IEEE International Conference on Multimedia and Expo (ICME).

Adaptive Multi-Trace Carving for Robust Frequency Tracking in Forensic Applications

Zhu, Q., Chen, M., Wong, C.-W., & Wu, M. (2020, October 12). IEEE Transactions on Information Forensics and Security.

Method, apparatus, and system for object tracking sensing using broadcasting

Lai, H.-quoc D., Claffey, D. N., Chen, C., Zhang, F., Wu, C., Chau-Wai, W. O. N. G., … Liu, K. J. R. (2020, August).

On Microstructure Estimation Using Flatbed Scanners for Paper Surface Based Authentication

ArXiv Preprint ArXiv:2008.13000.

Apparatus, systems and methods for event recognition based on a wireless signal

Xu, Q., Zhang, F., Chen, C., Wang, B., Wu, C., Zhang, H., … others. (2019, August). Google Patents.

Apparatus, systems and methods for fall-down detection based on a wireless signal

Zhang, F., Chen, C., Xu, Q., Wang, B., Wu, C., Zhang, H., … others. (2019, August). Google Patents.

ECG Reconstruction via PPG: A Pilot Study

Zhu, Q., Tian, X., Wong, C.-W., & Wu, M. (2019, May 1). IEEE/EMBS International Conference on Biomedical & Health Informatics (BHI). Presented at the IEEE.

ENF Signal Extraction for Rolling-shutter Videos Using Periodic Zero-Padding

IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP), 2667–2671.

Efficient Video Data Structure and Compression Scheme for Fabric Wicking Phenomenon Studies

Wong, C.-W. (2019, March 1). 2019 IEEE Conference on Multimedia Information Processing and Retrieval (MIPR), pp. 415–418.

Learning Your Heart Actions From Pulse: ECG Waveform Reconstruction From PPG

Zhu, Q., Tian, X., Wong, C.-W., & Wu, M. (2019, October 22). BioRxiv, Vol. 10, p. 815258.

Method, apparatus, and system for object tracking and navigation

Zhang, F., Lai, H.-Q. D., Chen, C.-I., Chau-Wai, W. O. N. G., Wang, B., Chen, C., … Liu, K. J. R. (2019, April). Google Patents.

Method, apparatus, server and system for real-time vital sign detection and monitoring

Zhang, F., Chen, C., Xu, Q., Wang, B., Wu, C., Zhang, H., … others. (2019, December). Google Patents.

Method, apparatus, server and system for vital sign detection and monitoring

Chen, C., Zhang, F., Xu, Q., Wang, B., Wu, C., Zhang, H., … others. (2019, May).

Video-Based Wetting Detection For Blended Fabrics

Liu, X., & Wong, C.-W. (2019, November 1). 53rd Asilomar Conference on Signals, Systems, and Computers.

Adaptive Multi-Trace Carving Based on Dynamic Programming

Zhu, Q., Chen, M., Wong, C.-W., & Wu, M. (2018, October 1). 2018 52nd Asilomar Conference on Signals, Systems, and Computers, pp. 1716–1720.

Analyzing Trend for U.S. Immigrants’ e-Health Engagement from 2008 to 2013

Zhao, X., Yang, B., & Wong, C.-W. (2018, May 16). Health Communication, Vol. 34, pp. 1259–1269.

Analyzing trend for US immigrants’ e-Health engagement from 2008 to 2013

Health Communication.

Counterfeit detection scheme using paper surfaces and mobile cameras

Wu, M., & Wong, C.-W. (2018, November).

Encoding and decoding perceptually-quantized video content

Froehlich, J., Atkins, R., Wong, C.-W., Su, G.-M., & Yin, P. (2018, April).

Enhanced Geometric Reflection Models for Paper Surface Based Authentication

Liu, R., Wong, C.-W., & Wu, M. (2018, December 1). IEEE International Workshop on Information Forensics and Security (WIFS), pp. 1–7.

Factors Affecting ENF Capture in Audio

Hajj-Ahmad, A., Wong, C.-W., Gambino, S., Zhu, Q., Yu, M., & Wu, M. (2018, May 17). IEEE Transactions on Information Forensics and Security, Vol. 14, pp. 277–288.

Invisible geo-location signature in a single image

IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP), 1987–1991.

Signal reshaping approximation

Su, G.-M., Wong, C.-W., Chou, H.-T., & Kottayil, N. K. A. M. B. A. L. L. U. R. (2018, September).

Counterfeit Detection Based on Unclonable Feature of Paper Using Mobile Camera

Wong, C.-W., & Wu, M. (2017, April 17). IEEE Transactions on Information Forensics and Security, Vol. 12, pp. 1885–1899.

Evolving publics, evolving messages: Analyzing publics’ information sharing network in a social-mediated crisis

67th Annual Conference of International Communication Association (ICA’17).

Fitness heart rate measurement using face videos

Zhu, Q., Wong, C.-W., Fu, C.-H., & Wu, M. (2017, September 1). IEEE International Conference on Image Processing (ICIP). Presented at the IEEE.

Micro Signal Extraction and Analytics

Segmenting and Understanding Publics in a Social Media Information Sharing Network: An Interactional and Dynamic Approach

Zhao, X., Zhan, M., & Wong, C.-W. (2017, November 21). International Journal of Strategic Communication, Vol. 12, pp. 25–45.

Toward a multilevel e-health engagement model: Analyzing trend for immigrants’ e-health engagement from 2008 to 2013

67th Annual Conference of International Communication Association (ICA’17).

We like the future more: Examining the influence of crisis response strategies on public sentiment from a big data perspective

103rd Annual Convention of National Communication Association (NCA’17).

Impact Analysis of Baseband Quantizer on Coding Efficiency for HDR Video

Wong, C.-W., Su, G.-M., & Wu, M. (2016, August 2). IEEE Signal Processing Letters, Vol. 23, pp. 1354–1358.

Information on the MAST ENF Power Signature Dataset

A Study on PUF characteristics for counterfeit detection

Wong, C.-W., & Wu, M. (2015, September 1). 2015 IEEE International Conference on Image Processing (ICIP), pp. 1643–1647.

Counterfeit detection using paper PUF and mobile cameras

Wong, C.-W., & Wu, M. (2015, November 1). 2015 IEEE International Workshop on Information Forensics and Security (WIFS). Presented at the IEEE.

ENF Signal Induced by Power Grid

Su, H., Hajj-Ahmad, A., Wong, C.-W., Garg, R., & Wu, M. (2014, November 3). Proceedings of the 2nd ACM International Workshop on Immersive Media Experiences - ImmersiveMe '14.

ENF signal induced by power grid: A new modality for video synchronization

ACM International Workshop on Immersive Media Experiences, 13–18.

Analysis of Dyadic Approximation Error for Hybrid Video Codecs With Integer Transforms

Wong, C.-W., & Siu, W.-C. (2011, April 6). IEEE Transactions on Image Processing, Vol. 20, pp. 2780–2787.

Comments on "2-D Order-16 Integer Transforms for HD Video Coding

Wong, C.-W., & Siu, W.-C. (2011, March 17). IEEE Transactions on Circuits and Systems for Video Technology.

Comments on "2-D Order-16 Integer Transforms for HD Video Coding"

IEEE Transactions on Circuits and Systems for Video Technology, 21(11), 1765–1767.

Transform Kernel Selection Strategy for the H.264/AVC and Future Video Coding Standards

Wong, N. C.-W., & Siu, N. W.-C. (2011, March 29). IEEE Transactions on Circuits and Systems for Video Technology, Vol. 21, pp. 1631–1645.

Adaptive integer kernels and dyadic approximation error analysis for state-of-the-art video codecs

The Hong Kong Polytechnic University.

Transform kernel selection strategy for the H.264

Annual Summit and Conference, APSIPA, 64–70.

Information on the MAST ENF Power Signature Datasets Updated: May 2016

Hajj-Ahmad, A., Wong, C.-W., & Wu, M.