Biography:

Professor and Ph.D. Supervisor; Deputy Director of the Institute of Cyberspace Security, School of Computer Science, Sun Yat-sen University; Deputy Director of the Key Laboratory of Information Technology (Sun Yat-sen University), Ministry of Education; and a recipient of the Guangdong Provincial Young Top Talent Program. He is a member of IEEE and the China Computer Federation (CCF), a senior member of the China Society of Image and Graphics, and a committee member of the Digital Media Forensics and Security Technical Committee.

He has published more than 60 papers, including over 20 papers in the top four conferences in information security, IEEE/ACM Transactions, and CCF Class-A conferences, and holds multiple authorized national invention patents. He has served as principal investigator for four projects funded by the National Natural Science Foundation of China (including international cooperation, general, and young scientist projects), one subproject of a National Key R&D Program, five projects funded by the Guangdong Natural Science Foundation or the Guangdong Department of Science and Technology, as well as a number of other vertical research projects. He has also participated as a key contributor in nearly 10 national- and provincial-level major or key projects.

His former students have gone on to work at public institutions, state-owned enterprises, and leading IT companies, including China Southern Power Grid, Tencent, Alibaba, ByteDance, Huawei, Honor, and NetEase Games.

Postdoctoral researchers, research fellows, international visiting scholars, and PhD students interested in mentorship or research collaboration (including remote/online guidance) are warmly welcome to reach out and join my research group.

Research Areas:

Artificial Intelligence and Large Models

Signal Processing in the Encrypted Domain

Cloud Computing and Federated Learning

Cryptographic Applications and Privacy-Preserving Computing

Education:

2009/09-2014/06, Sun Yat-sen University, Department of Computer Science, Ph.D.

2005/09-2009/06, Sun Yat-sen University, Department of Mathematics, B.S.

Professional Experience:

2014/07-present, Sun Yat-sen University

Research Projects:

1. International Cooperation Research Project of the National Natural Science Foundation of China, Research on Efficient Privacy-Preserving Learning Methods, PI
2. General Program of the National Natural Science Foundation of China, Research on Intelligent Video Processing in the Encrypted Domain, PI
3. General Program of the National Natural Science Foundation of China, Research on Encrypted Video Analysis Techniques in Cloud Computing Environments, PI
4. National Key R&D Program, Privacy Protection Technologies for Multimedia Big Data, Subproject Leader
5. Young Scientists Fund of the National Natural Science Foundation of China, Encrypted-Domain Multimedia Watermarking and Pattern Matching in Cloud Computing, PI
6. Guangdong Natural Science Foundation Youth Enhancement Project, Research on Encrypted-Domain Video Watermarking Techniques, PI
7. Guangdong Natural Science Foundation, Research on Encrypted-Domain Audio Watermarking and Speech Classification Techniques, PI
8. Open Fund of the Henan Key Laboratory of Cyberspace Situation Awareness, Privacy-Preserving Multimedia Intelligent Processing Technologies, PI
9. Guangdong Natural Science Foundation, Research on Privacy-Preserving Encrypted Video Processing Techniques in Cloud Computing, PI
10. Guangdong Natural Science Foundation, Research on Encrypted-Domain Multimedia Processing Techniques and Their Applications in Privacy Protection, PI
11. Sun Yat-sen University Young Faculty Development Program, Research on Efficient Encrypted-Domain Multimedia Processing Techniques in Cloud Computing, PI
12. Open Project of the State Key Laboratory of Information Security, Research on Efficient Encrypted-Domain Face Recognition and Audio Watermarking Techniques, PI
13. International (Regional) Cooperation and Exchange Project of the National Natural Science Foundation of China, Research on the Theory and Key Technologies of Digital Media Content Security Based on Information Hiding, Participant
14. Guangdong Major Project of Basic and Applied Basic Research, Research on Trustworthy, Explainable, and Evolvable Intelligent Computing Theories and Methods, Participant
15. Key Project of the Guangzhou Science and Technology Program, Research on Key Technologies and Systems for Digital Video Forensics for Big Data, Participant (ranked first)

Major Academic Services:

1. Associate Editor, IEEE Signal Processing Letters
2. Senior Member of the China Society of Image and Graphics; committee member of the Digital Media Forensics and Security Technical Committee
3. Reviewer for leading international journals and conferences, including IEEE TPAMI, IEEE TCSVT, IEEE TIFS, IEEE TIP, IEEE TDSC, IEEE TAES, ACM MM, NeurIPS and ICML

Courses Taught:

Probability Theory and Mathematical Statistics, Information Security, Digital Forensics, Digital Image Processing, Multimedia Content Security, Information Hiding, Advanced Mathematics

Representative Publications:

1. Peijia Zheng, Yuru Song, Xianhao Tian, Wei Lu, Xiaochun Cao, and Jiwu Huang. "Secure Moving Object Detection in Compressed Video Using Attentions." IEEE Transactions on Dependable and Secure Computing, 2026, 23(1): 1260-1274. (CCF Class-A Journal, CAS Q1, JCR Q1)
2. Peijia Zheng, Donger Mo, Yufei Zhou, Xiangyu Gao, Xiaochun Cao, and Jiwu Huang. "Privacy-Preserving CNN Inference for Image Super-Resolution Cross Multiple Ciphertexts." IEEE Transactions on Image Processing, 2025, 34: 8568-8582. (CCF Class-A Journal, CAS Q1, JCR Q1)
3. Yifan Zeng, Fangzhou Dong, Jian Zhao, Peijia Zheng*, Jian Li, and Huiyu Zhou. "Towards Culturally Fair Multimodal Generation: Quantifying and Mitigating Orientalist Biases in Text-to-Visual Models." In Proceedings of the 33rd ACM International Conference on Multimedia, 2025, pp. 11434-11442. (CCF Class-A Conference)
4. Peijia Zheng, Xiongjie Fang, Zhipeng Zhou, Rui Yang, Wei Lu, Xiaochun Cao, and Jiwu Huang*. "Accurate and Efficient Privacy-Preserving Feature Extraction on Encrypted Images." IEEE Transactions on Dependable and Secure Computing, 2025, 22(4): 3192-3207. (CCF Class-A Journal, CAS Q1, JCR Q1)
5. Yufei Zhou, Peijia Zheng*, Xiaochun Cao, and Jiwu Huang. "Two-Tier Data Packing in RLWE-based Homomorphic Encryption for Secure Federated Learning." In Proceedings of the 31st ACM SIGSAC Conference on Computer and Communications Security (CCS), 2024, pp. 2844-2858. (Top Four Conference in Information Security; CCF Class-A Conference)
6. Xianhao Tian, Peijia Zheng*, and Jiwu Huang*. "Secure Deep Learning Framework for Moving Object Detection in Compressed Video." IEEE Transactions on Dependable and Secure Computing, 2024, 21(4): 2836-2851. (CCF Class-A Journal, CAS Q1, JCR Q1)
7. Peijia Zheng, Ziyan Cheng, Xianhao Tian, Hongmei Liu, Weiqi Luo, and Jiwu Huang*. "Non-Interactive Privacy-Preserving Frequent Itemset Mining Over Encrypted Cloud Data." IEEE Transactions on Cloud Computing, 2023, 11(4): 3452-3468. (Top Journal in Cloud Computing, JCR Q1)
8. Peijia Zheng, Zhiwei Cai, Huicong Zeng, and Jiwu Huang*. "Keyword Spotting in the Homomorphic Encrypted Domain Using Deep Complex-Valued CNN." In Proceedings of the 30th ACM International Conference on Multimedia, Lisbon, Portugal, 2022, pp. 1474-1483. (CCF Class-A Conference)
9. Xianhao Tian, Peijia Zheng*, and Jiwu Huang*. "Robust Privacy-Preserving Motion Detection and Object Tracking in Encrypted Streaming Video." IEEE Transactions on Information Forensics and Security, 2021, 16: 5381-5396. (CCF Class-A Journal, CAS Q1, JCR Q1)
10. Jianting Guo, Peijia Zheng*, and Jiwu Huang. "Efficient Privacy-Preserving Anomaly Detection and Localization in Bitstream Video." IEEE Transactions on Circuits and Systems for Video Technology, 2020, 30(9): 3268-3281. (CCF Class-B Journal, CAS Q1, JCR Q1)
11. Peijia Zheng and Jiwu Huang. "Efficient Encrypted Images Filtering and Transform Coding With Walsh-Hadamard Transform and Parallelization." IEEE Transactions on Image Processing, 2018, 27(5): 2541-2556. (CCF Class-A Journal, CAS Q1, JCR Q1)
12. Jianting Guo, Peijia Zheng*, and Jiwu Huang. "An Efficient Motion Detection and Tracking Scheme for Encrypted Surveillance Videos." ACM Transactions on Multimedia Computing, Communications, and Applications, 2017, 13(4): 61:1-61:23. (CCF Class-B Journal, JCR Q1)
13. Peijia Zheng and Jiwu Huang*. "Discrete Wavelet Transform and Data Expansion Reduction in Homomorphic Encrypted Domain." IEEE Transactions on Image Processing, 2013, 22(6): 2455-2468. (CCF Class-A Journal, CAS Q1, JCR Q1)
14. Peijia Zheng and Jiwu Huang*. "An Efficient Image Homomorphic Encryption Scheme with Small Ciphertext Expansion." In Proceedings of the 21st ACM International Conference on Multimedia (MM '13), Barcelona, Spain, 2013, pp. 803-812. (CCF Class-A Conference)
15. Peijia Zheng and Jiwu Huang*. "Walsh-Hadamard Transform in the Homomorphic Encrypted Domain and Its Application in Image Watermarking." In Proceedings of the 14th International Conference on Information Hiding (IH 2012), Berkeley, CA, USA, 2012, pp. 240-254. (Representative venue in information hiding)
16. Peijia Zheng and Jiwu Huang*. "Implementation of the Discrete Wavelet Transform and Multiresolution Analysis in the Encrypted Domain." In Proceedings of the 19th ACM International Conference on Multimedia (MM '11), Scottsdale, AZ, USA, 2011, pp. 413-422. (CCF Class-A Conference)