Yuanfang Guo (Andy)
郭园方
Ph.D. & Associate Professor
I received my B.S. and Ph.D. degrees from the Hong Kong University of Science and Technology, Hong Kong, in 2009 and 2015, respectively. Then, I served as an Assistant Professor with the State Key Laboratory of Information Security, Institute of Information Engineering, Chinese Academy of Sciences, for three years. I am currently an Associate Professor with the Laboratory of Intelligent Recognition and Image Processing, School of Computer Science and Engineering, Beihang University, Beijing, China. My current research interests include Multimedia Security, AI Security, Graph Neural Networks, AI for Science.
Experiences
Associate Professor @ the Laboratory of Intelligent Recognition and Image Processing, School of Computer Science and Engineering, Beihang University
Assistant Professor @ the Laboratory of Intelligent Recognition and Image Processing, School of Computer Science and Engineering, Beihang University
Assistant Professor @ the State Key Laboratory of Information Security, Institute of Information Engineering, Chinese Academy of Sciences
Doctor of Philosophy in Electronic and Computer Engineering @ the Hong Kong University of Science and Technology
Bacholor of Computer Engineering @ the Hong Kong University of Science and Technology
Publications
Journal Papers
Ruijie Yang, Yuanfang Guo, Ruikui Wang, Jiantao Zhou and Yunhong Wang. "A Perceptual Distortion Reduction Framework: Towards Generating Adversarial Examples with High Perceptual Quality and Attack Success Rate". IEEE Transactions on Dependable and Secure Computing, 2025, Accepted.
Yunyu Tian†, Yiting Xu†, Yilin Liang†, Ziqin Zhou, Katie M. Susong, Yuyang Chen, Kishen Joshi, Amy M. Campbell, Ahyoung Lim, Qiushi Lin, Zixuan Ma, Yuanlong Wei, Yun Yang, Cheng Sun, Juan Feng, Qixin He, Zengmiao Wang, Bernard Cazelles, Yuanfang Guo, Kai Liu, Oliver J. Brady* and Huaiyu Tian*. "Rising dengue risk with increasing El Niño–Southern Oscillation amplitude and teleconnections". Nature Communications. 2025, Accepted.
Fan Gao, Hongqiang Li, Zhilong Chen, Yunai Yi, Shihao Nie, Zihao Cheng, Zeming Liu*, Yuanfang Guo, Shumin Liu, Qizhen Qin, Zhengjian Li, Lisong Zhang, Han Hu, Cunjin Li, Liang Yang, Yunhong Wang and Guangxu Chen*. "A Chemical Autonomous Robotic Platform for the Synthesis of Nanoparticles". Nature Communications. 2025, Accepted.
Heqi Peng†, Mingxuan Chen†, Yunhong Wang and Yuanfang Guo*. "HFA2RE: Enhancing adversarial robustness via Hyperspherical Feature Aggregation". Pattern Recognition, vol. 169, 111857, 2026.
郭园方†*，余梓彤†，刘艾杉†，周文柏†，乔通†，李斌，张卫明，康显桂，周琳娜，俞能海，黄继武. 2025. "多模态大模型安全研究进展". 中国图象图形学报， 30(6):2051-2081.
Ruijie Yang, Yuanfang Guo*, Chao Zhou, Guohao Li and Yunhong Wang. "Vector Quantization Based Query-Efficient Attack via Direct Preference Optimization". IEEE Signal Processing Letters, vol. 32, pp. 1550-1554, 2025.
Zhen Yang, Guodong Wang, Yuanfang Guo, Xiuguo Bao and Di Huang. "Anomaly-aware self-supervised feature learning for weakly supervised video anomaly detection". Computer Vision and Image Understanding, vol. 257, 104379, 2025.
Ruijie Yang, Yuanfang Guo*, Junfu Wang, Jiantao Zhou and Yunhong Wang. "Common knowledge learning for generating transferable adversarial examples". Frontiers of Computer Science, vol. 19, no. 10, 1910359, 2025.
Heqi Peng, Yunhong Wang, Ruijie Yang, Beichen Li, Rui Wang and Yuanfang Guo*. "AED-PADA: Improving generalizability of adversarial example detection via principal adversarial domain adaptation". ACM Transactions on Multimedia Computing, Communications and Applications, vol. 21, no. 2, pp. 70:1-70:24, 2025.
Yihui Li, Yuanfang Guo*, Junfu Wang, Shihao Nie, Liang Yang, Di Huang and Yunhong Wang. "ALD-GCN: Graph convolutional networks with attribute-level defense". IEEE Transactions on Big Data, vol. 11, no. 2, pp. 788-799, 2025.
Ruikui Wang, Yuanfang Guo*, Ruijie Yang and Yunhong Wang. "Exploring transferable and robust adversarial perturbation generation across network hierarchy". Neurocomputing, vol. 610, 128620, 2024.
Junfu Wang, Yuanfang Guo*, Liang Yang and Yunhong Wang. "Heterophily-aware graph attention network". Pattern Recognition, vol. 156, 110738, 2024.
Junfu Wang, Yuanfang Guo*, Liang Yang and Yunhong Wang. "Binary graph convolutional network with capacity exploration". IEEE Transactions on Pattern Analysis and Machine Intelligence, vol. 46, no. 5, pp. 3031-3046, 2024.
Zhen Yang, Yuanfang Guo*, Junfu Wang, Di Huang, Xiuguo Bao and Yunhong Wang. "Towards video anomaly detection in the real world: A binarization embedded weakly-supervised network". IEEE Transactions on Circuits and Systems for Video Technology, vol. 34, no. 5, pp. 4135-4140, 2024.
Junfu Wang, Yuanfang Guo*, Liang Yang and Yunhong Wang. "Enabling homogeneous GNNs to handle heterogeneous graphs via relation embedding". IEEE Transactions on Big Data, vol. 9, no. 6, pp. 1697-1710, 2023.
Liang Yang, Yuanfang Guo*, Junhua Gu, Di Jin, Bo Yang and Xiaochun Cao. "Probabilistic graph convolutional network via topology-constrained latent space model". IEEE Transactions on Cybernetics, vol. 52, no. 4, pp. 2123-2136, 2022.
Rui Wang, Dong Liang, Xiaochun Cao* and Yuanfang Guo. "Semantic correspondence with geometric structure analysis". ACM Transactions on Multimedia Computing Communications and Applications, vol. 17, no. 3, pp. 1-21, 2021.
Liang Yang, Weixun Li, Yuanfang Guo* and Junhua Gu. "Graph-CAT: Graph co-attention networks via local and global attribute augmentations". Future Generation Computer Systems, vol. 18, pp. 170-179, 2021.
Haoran An, Haimiao Hu*, Yuanfang Guo, Qianli Zhou and Bo Li. "Hierarchical reasoning network for pedestrian attribute recognition". IEEE Transactions on Multimedia, vol. 23, pp. 268-280, 2020.
Shuyuan Zhu, Zhiying He, Xiandong Meng, Jiantao Zhou, Yuanfang Guo* and Bing Zeng*. "A new polyphase down-sampling-based multiple description image coding". IEEE Transactions on Image Processing, vol. 29, pp. 5596-5611, 2020.
Shuyuan Zhu, Chang Cui, Ruiqin Xiong, Yuanfang Guo* and Bing Zeng*. "Efficient chroma sub-sampling and luma modification for color image compression". IEEE Transactions on Circuits and Systems for Video Technology, vol. 29, no. 5, pp. 1559-1563, 2019.
Shuyuan Zhu, Zhiying He, Chen Chen, Shuaicheng Liu, Jiantao Zhou, Yuanfang Guo* and Bing Zeng*. "High-quality color image compression by quantization crossing color spaces". IEEE Transactions on Circuits and Systems for Video Technology, vol. 29, no. 5, pp. 1474-1487, 2019.
Yuanfang Guo, Xiaochun Cao*, Wei Zhang and Rui Wang. "Fake colorized image detection". IEEE Transactions on Information Forensics and Security, vol. 13, no. 8, pp. 1932-1944, 2018.
CODE DATABASE (Password: 4ns9)
Yuanfang Guo, Oscar C. Au, Rui Wang*, Lu Fang and Xiaochun Cao. "Halftone image watermarking by content aware double-sided embedding error diffusion". IEEE Transactions on Image Processing, vol. 27, no. 7, pp. 3387-3402, 2018.
Amin Zheng, Yuan Yuan, Jiantao Zhou, Yuanfang Guo, Haitao Yang and Oscar C. Au. "Adaptive block coding order for intra prediction in HEVC". IEEE Transactions on Circuits and Systems for Video Technology, vol. 26, no. 11, pp. 2152-2158, 2016.
Jiahao Pang, Lu Fang, Jin Zeng, Yuanfang Guo and Ketan Tang. "Subpixel-based image scaling for grid-like subpixel arrangements: a generalized continuous-domain analysis model". IEEE Transactions on Image Processing, vol. 25, no. 3, pp. 1017-1032, 2016.
Yuanfang Guo, Oscar C. Au, Jiantao Zhou, Ketan Tang and Xiaopeng Fan. "Halftone image watermarking via optimization". Signal Processing: Image Communication, vol. 41, pp. 85-100, Feb. 2016.
Yuanfang Guo, Oscar C. Au and Ketan Tang. "Watermark embedding for multiscale error diffused halftone images by adopting Visual Cryptography". International Journal of Digital Crime and Forensics (IJDCF), vol. 7, no. 1, pp. 51-68, 2015.
Lingfeng Xu, Ling Hou, Oscar C. Au, Wenxiu Sun, Xingyu Zhang and Yuanfang Guo. "A novel Ray-space based view generation algorithm via Radon transform". 3D Research, vol. 4, no. 2, pp. 1-15, 2013.
Conference Papers
Zihao Cheng†, Hongru Wang†, Zeming Liu*, Yuhang Guo, Yuanfang Guo, Yunhong Wang and Haifeng Wang. "ToolSpectrum: Towards Personalized Tool Utilization for Large Language Models". Findings of the Association for Computational Linguistics (ACL Findings), 2025, Accepted.
Liang Yang, Xin Chen, Jiaming Zhuo, Di Jin*, Chuan Wang, Yuanfang Guo, Xiaochun Cao and Zhen Wang. "Disentangled Graph Spectral Domain Adaptation". International Conference on Machine Learning (ICML), 2025, Accepted.
Liang Yang, Yukun Cai, Hui Ning, Jiaming Zhuo*, Di Jin, Ziyi Ma, Yuanfang Guo, Chuan Wang and Zhen Wang. "Universal Graph Self-Contrastive Learning". International Joint Conference on Artificial Intelligence (IJCAI), 2025, Accepted.
Ming Sun, Rui Wang*, Zixuan Zhu, Lihua Jing and Yuanfang Guo. "EntropyMark: Towards More Harmless Backdoor Watermark via Entropy-based Constraint for Open-source Dataset Copyright Protection". IEEE/CVF Conference on Computer Vision and Pattern Recognition (CVPR), 2025, pp. 30692-30701.
Jiaming Zhuo, Yuwei Liu, Yintong Lu, Ziyi Ma, Kun Fu, Chuan Wang, Yuanfang Guo, Zhen Wang, Xiaochun Cao and Liang Yang*. "DUALFormer: Dual Graph Transformer". International Conference on Learning Representations (ICLR), 2025.
Zhen Yang, Yuanfang Guo*, Ruijie Yang, Di Huang and Jiantao Zhou. "Feature Perturbation Agent based Adversarial Attack Method for Weakly Supervised Video Anomaly Detection". IEEE International Symposium on Circuits and Systems (ISCAS), 2025, pp. 1-5.
Ruijie Yang, Yuanfang Guo* and Jinyu Tian. "Adversarial Examples Can Actually Help to Enhance Adversarial Transferability". International Conference on Machine Learning and Computing, 2025, pp. 238-249. (Oral).
Lin Lu, Yunhong Wang, Liang Zhang and Yuanfang Guo*. "Robust Deepfake Detection via Perturbation Domain Alignment". IEEE International Conference on Acoustics, Speech, and Signal Processing (ICASSP), 2025, pp. 1-5..
Hui Miao, Yuanfang Guo*, Zeming Liu and Yunhong Wang. "Multi-modal Deepfake Detection via Multi-task Audio-Visual Prompt Learning". AAAI Conference on Artificial Intelligence (AAAI), 2025, pp. 612-621. (Oral).
Zuhai Zhang, Luheng Jia, Li Song, Shuyuan Zhu, Yuanfang Guo and Kebin Jia. "Dictionary Learning Based Two-stage Near-lossless Video Compression". Asia Pacific Signal and Information Processing Association Annual Summit and Conference (APSIPA ASC), 2024, pp. 1-6.
Jiaming Zhuo, Yintong Lu, Hui Ning, Kun Fu, Bingxin Niu, Dongxiao He, Chuan Wang, Yuanfang Guo, Zhen Wang, Xiaochun Cao and Liang Yang*. "Unified Graph Augmentations for Generalized Contrastive Learning on Graphs". Advances in Neural Information Processing Systems (NeurIPS), 2024, pp. 37473-37503.
Junfu Wang, Yuanfang Guo*, Liang Yang and Yunhong Wang. "Understanding Heterophily for Graph Neural Networks". International Conference on Machine Learning (ICML), 2024, pp. 50489-50529.
Lin Lu, Yunhong Wang, Wenqi Zhuo, Liang Zhang, Guangshuai Gao and Yuanfang Guo*. "Deepfake Detection Via Separable Self-Consistency Learning". IEEE International Conference on Image Processing (ICIP), 2024, pp. 3264-3270.
Jiaming Zhuo, Feiyang Qin, Can Cui, Kun Fu, Bingxin Niu, Mengzhu Wang, Yuanfang Guo, Chuan Wang*, Zhen Wang, Xiaochun Cao and Liang Yang*. "Improving Graph Contrastive Learning via Adaptive Positive Sampling". IEEE/CVF Conference on Computer Vision and Pattern Recognition (CVPR), 2024, pp. 23179-23187.
Jiaming Zhuo, Can Cui, Kun Fu, Bingxin Niu, Dongxiao He, Chuan Wang*, Yuanfang Guo, Zhen Wang, Xiaochun Cao and Liang Yang*. "Graph Contrastive Learning Reimagined: Exploring Universality". ACM Web Conference (WWW), 2024, pp. 641-651.
Liang Yang, Weixiao Hu, Jizhong Xu, Runjie Shi, Dongxiao He*, Chuan Wang, Xiaochun Cao, Zhen Wang, Bingxin Niu and Yuanfang Guo. "GAUSS: GrAph-customized Universal Self-Supervised Learning". ACM Web Conference (WWW), 2024, pp. 582-593.
Ruikui Wang, Yuanfang Guo* and Yunhong Wang. "AGS: Affordable and Generalizable Substitute Training for Transferable Adversarial Attack". AAAI Conference on Artificial Intelligence (AAAI), 2024, pp. 5553-5562.
Tonghui Li, Yuanfang Guo* and Yunhong Wang. "Deepfake Detection via Fine-Grained Classification and Global-Local Information Fusion". Chinese Conference on Pattern Recognition and Computer Vision (PRCV), 2023, pp. 309-321..
Yucong Suo†, Xiaohan Zhao†, Yuanfang Guo*, Yangxi Li and Yunhong Wang. "A Dual Domain Attention Mechanism for Face Forgery Detection". IEEE International Joint Conference on Biometrics (IJCB), 2023, Accepted. (Oral).
Jiaming Zhuo, Can Cui, Kun Fu, Bingxin Niu, Dongxiao He, Yuanfang Guo, Zhen Wang, Chuan Wang*, Xiaochun Cao, and Liang Yang*. "Propagation is All You Need: A New Framework for Representation Learning and Classifier Training on Graphs". ACM Multimedia (ACMMM), pp. 481-489, 2023.
Liang Yang†, Jiayi Wang†, Tingting Zhang, Dongxiao He*, Chuan Wang, Yuanfang Guo, Xiaochun Cao, Bingxin Niu and Zhen Wang. "Long Short-Term Graph Memory Against Class-imbalanced Over-smoothing". ACM Multimedia (ACMMM), pp. 2955-2963, 2023.
Liang Yang, Qiuliang Zhang, Runjie Shi, Wenmiao Zhou, Bingxin Niu, Chuan Wang*, Xiaochun Cao, Dongxiao He, Zhen Wang and Yuanfang Guo. "Graph Neural Network without Propagation". ACM Web Conference (WWW), pp. 469-477, 2023.
Lingfeng Tan, Yunhong Wang, Junfu Wang, Liang Yang, Xunxun Chen and Yuanfang Guo*. "Deepfake Video Detection via Facial Action Dependencies Estimation". AAAI Conference on Artificial Intelligence (AAAI), pp. 5276-5284, 2023 (Oral).
Ruikui Wang, Yuanfang Guo* and Yunhong Wang. "Global-Local Characteristic Excited Cross-Modal Attacks from Images to Videos". AAAI Conference on Artificial Intelligence (AAAI), pp. 2635-2643, 2023.
Liang Yang†, Lina Kang†, Qiuliang Zhang†, Mengzhe Li, Bingxin Niu, Dongxiao He*, Zhen Wang, Chuan Wang, Xiaochun Cao and Yuanfang Guo. "OPEN: Orthogonal Propagation with Ego-Network Modeling". Advances in Neural Information Processing Systems (NeurIPS), pp. 9249-9261, 2022.
Xiaohan Zhao, Yunhong Wang, Ruijie Yang and Yuanfang Guo*. "JoinTW: A Joint Image-to-Image Translation and Watermarking Method". Chinese Conference on Pattern Recognition and Computer Vision (PRCV), pp. 758-772, 2022 (Best Paper Award).
Liang Yang†, Weihang Peng†, Wenmiao Zhou†, Bingxin Niu, Junhua Gu, Chuan Wang, Yuanfang Guo*, Dongxiao He and Xiaochun Cao. "Difference Residual Graph Neural Networks". ACM Multimedia (ACMMM), pp. 3356-3364, 2022 (Oral).
Ruijie Yang, Yuanfang Guo*, Ruikui Wang, Xiaohan Zhao and Yunhong Wang. "Exploring the Impact of Adding Adversarial Perturbation onto Different Image Regions". IEEE International Symposium on Circuits and Systems (ISCAS), pp. 2363-2367, 2022
Liang Yang†, Cheng Chen†, Weixun Li†, Bingxin Niu, Junhua Gu, Chuan Wang*, Dongxiao He, Yuanfang Guo and Xiaochun Cao. "Self-supervised Graph Neural Networks via Diverse and Interactive Message Passing". AAAI Conference on Artificial Intelligence (AAAI), pp. 4327- 4336, 2022
Liang Yang†, Mengzhe Li†, Liyang Liu†, Bingxin Niu, Junhua Gu, Chuan Wang, Xiaochun Cao and Yuanfang Guo*. "Diverse Message Passing for Attribute with Heterophily". Advances in Neural Information Processing Systems (NeurIPS), pp. 4751-4763, 2021
Zhen Yang, Yuanfang Guo, Jinjie Wei, Xiuguo Bao and Di Huang. "Multi-scale Background Suppression based Anomaly Detection in Surveillance Videos". IEEE International Conference on Image Processing (ICIP), pp. 1114-1118, 2021
Liang Yang, Fan Wu, Zichen Zheng, Bingxin Niu, Junhua Gu, Chuan Wang, Xiaochun Cao and Yuanfang Guo*. "Heterogeneous Graph Information Bottleneck". International Joint Conference on Artificial Intelligence (IJCAI), pp. 1638-1645, 2021
Junfu Wang, Yunhong Wang, Zhen Yang, Liang Yang and Yuanfang Guo*. "Bi-GCN: Binary Graph Convolutional Network". IEEE/CVF Conference on Computer Vision and Pattern Recognition (CVPR), pp. 1561-1570, 2021 (Oral)
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Liang Yang, Junhua Gu, Chuan Wang, Xiaochun Cao, Lu Zhai, Di Jin and Yuanfang Guo. "Toward Unsupervised Graph Neural Network: Interactive Clustering and Embedding via Optimal Transport". IEEE International Conference on Data Mining (ICDM), pp. 1358-1363, 2020
Yong Bai, Yuanfang Guo*, Jinjie Wei, Lin Lu, Rui Wang and Yunhong Wang. "Fake generated painting detection via frequency analysis". IEEE International Conference on Image Processing (ICIP), pp. 1256-1260, 2020 (Oral)
Liang Yang, Yuexue Wang, Junhua Gu*, Chuan Wang, Xiaochun Cao and Yuanfang Guo. "JANE: Jointly adversarial network embedding". International Joint Conference on Artificial Intelligence (IJCAI), pp. 1381-1387, 2020
Yanyang Yan, Shengdong Zhang, Mingye Ju, Wenqi Ren, Rui Wang and Yuanfang Guo*. "A point light source interference removal method for image dehazing". IEEE International Conference on Computer Vision and Pattern Recognition Workshops (CVPRW), pp. 3817-3825, 2020
Liang Yang, Fan Wu, Junhua Gu, Chuan Wang, Xiaochun Cao, Di Jin* and Yuanfang Guo. "Graph Attention Topic Modeling Network". ACM Web Conference (WWW), pp. 144-154, 2020 (Oral)
Mingda Wu, Di Huang*, Yuanfang Guo and Yunhong Wang. "Distraction-aware feature learning for human attribute recognition via coarse-to-fine attention mechanism". AAAI Conference on Artificial Intelligence (AAAI), pp. 12394-12401, 2020 (Oral)
Yan Wang, Shuyuan Zhu, Xiandong Meng, Bing Zeng, Yuanfang Guo and Ruiqin Xiong. "Color image compression with transform domain down-sampling and deep convolutional reconstruction". IEEE International Conference on Visual Communications and Image Processing (VCIP), pp. 1-4, 2019
Lian Gao, Di Huang*, Yuanfang Guo and Yunhong Wang. "Pedestrian attribute recognition via hierarchical multi-task learning and relationship attention". ACM Multimedia (ACMMM), pp. 1340-1348, 2019
Yidong Zhang, Yunhong Wang and Yuanfang Guo*. "Scene graph generation via convolutional message passing and class-aware memory embeddings". International Conference on Artificial Neural Networks (ICANN), pp. 620-633, 2019
Liang Yang, Fan Wu, Yingkui Wang, Junhua Gu and Yuanfang Guo*. "Masked graph convolutional network". International Joint Conference on Artificial Intelligence (IJCAI), pp.4070-4077, 2019
Liang Yang, Zesheng Kang, Xiaochun Cao, Di Jin, Bo Yang and Yuanfang Guo*. "Topology optimization based graph convolutional network". International Joint Conference on Artificial Intelligence (IJCAI), pp. 4054-4061, 2019
Liang Yang, Zhiyang Chen, Junhua Gu and Yuanfang Guo. "Dual self-paced graph convolutional network: Towards reducing attribute distortions induced by topology". International Joint Conference on Artificial Intelligence (IJCAI), pp. 4062-4069, 2019
Wei Cheng†, Lan Xu†, Lei Han, Yuanfang Guo* and Lu Fang*. "iHuman3D: Intelligent human body 3D reconstruction using a single flying camera". ACM Multimedia (ACMMM), pp. 1733-1741, 2018 (Oral)
Yuanfang Guo, Xiaochun Cao*, Rui Wang and Cheng Jin. "A new data embedding method with a new data embedding domain for JPEG images". IEEE International Conference on Multimedia Big Data (BigMM), pp. 1-5, 2018
Liang Yang†, Yuanfang Guo†, Di Jin*, Huazhu Fu and Xiaochun Cao. "3-in-1 correlated embedding via adaptive exploration of the structure and semantic subspaces". International Joint Conference on Artificial Intelligence (IJCAI), pp. 3613-3619, 2018
Liang Yang, Yuanfang Guo and Xiaochun Cao*. "Multi-facet Network Embedding: Beyond the General Solution of Detection and Representation". AAAI Conference on Artificial Intelligence (AAAI), pp. 499-506, 2018
Wei Zhang, Xiaochun Cao*, Rui Wang, Yuanfang Guo and Zhineng Chen. "Binarized mode seeking for scalable visual pattern discovery". IEEE International Conference on Computer Vision and Pattern Recognition (CVPR), pp. 6827-6835, 2017
Yanyang Yan, Wenqi Ren, Yuanfang Guo, Rui Wang and Xiaochun Cao*. "Image deblurring via extreme channels prior". IEEE International Conference on Computer Vision and Pattern Recognition (CVPR), pp. 6978-6986, 2017
Daojuan Zhang, Yuanfang Guo, Dianjie Guo and Guangming Yu. "Privacy leaks through data hijacking attack on mobile systems". International Conference on Information Technology and Applications (ITA), 2017.
Daojuan Zhang, Yuanfang Guo*, Dianjie Guo, Rui Wang and Guangming Yu. "Contextual approach for identifying malicious inter-component privacy leaks in Android Apps". IEEE Workshop on Distributed Mobile Systems & IoT Services (DMSS), in IEEE Symposium on Computers and Communications (ISCC), pp. 228-235, 2017.
Qing Wang, Jiansu Pu, Yuanfang Guo, Zheng Hu and Hui Tian. "EgoPortray: visual exploration of mobile communication signature from egocentric network perspective". International Conference on Multimedia Modelling (MMM), pp. 649-661, 2017.
Jiaxin Yin, Rui Wang, Yuanfang Guo* and Feng Liu. "An adaptive reversible data hiding scheme for JPEG images". International Workshop on Digital-Forensics and Watermarking (IWDW), pp. 456-469, 2016.
Sunil Prasad Jaiswal, Oscar Au, Vinit Jakhetiya, Andy Yuanfang Guo and Anil K. Tiwari. "Adaptive predictor structure based interpolation for reversible data hiding". International Workshop on Digital-Forensics and Watermarking (IWDW), pp. 276-288, 2014.
Jiahao Pang, Oscar C. Au, Yukihiko Yamashita, Yonggen Ling, Yuanfang Guo and Jin Zeng. "Self-similarity-based image colorization". IEEE International Conference on Image Processing (ICIP), pp. 4687-4691, 2014.
Ketan Tang, Oscar C. Au, Lu Fang, Jiahao Pang, Yuanfang Guo and Jiali Li. "Fast algorithm of arbitrary factor subpixel downsampling based on frequency analysis". IEEE International Conference on Multimedia and Expo (ICME), pp. 1-6, 2014.
Jin Zeng, Oscar C. Au, Yuanfang Guo, Jiahao Pang, Ketan Tang and Yonggen Ling. "Analysis of sampling pattern and luma-chroma filter design for subpixel-based image downsampling". IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP), pp. 5834-5838, 2014.
Yuanfang Guo, Oscar C. Au, Ketan Tang and Jiahao Pang. "Hiding a secret pattern into color halftone images". International Workshop on Digital-Forensics and Watermarking (IWDW), pp. 465-474, 2013.
Ketan Tang, Oscar C. Au, Lu Fang, Yuanfang Guo and Jiahao Pang. "Chroma replacing and adaptive chroma blending for subpixel-based downsampling". IEEE International Workshop on Multimedia Signal Processing (MMSP), pp. 212-217, 2013.
Sunil Prasad Jaiswal, Oscar C. Au, Vinit Jakhetiya, Yuanfang Guo, Anil K. Tiwari and Yue Kong. "Efficient adaptive prediction based reversible image watermarking". IEEE International Conference on Image Processing (ICIP), pp. 4540-4544, 2013.
Ketan Tang, Oscar C. Au, Yuanfang Guo, Jiahao Pang, Jiali Li and Lu Fang. "Arbitrary factor image interpolation by convolution kernel constrained 2-D autoregressive modeling". IEEE International Conference on Image Processing (ICIP), pp. 996-1000, 2013.
Xingyu Zhang, Oscar C. Au, Chao Pang, Wei Dai, Yuanfang Guo and Lu Fang. "Additional sign bit hiding of transform coefficients in HEVC". IEEE International Conference on Multimedia and Expo Workshops (ICMEW), pp. 1-4, 2013.
Jiahao Pang, Oscar C. Au, Ketan Tang and Yuanfang Guo. "Image colorization using sparse representation". IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP), pp. 1578-1582, 2013.
Ketan Tang, Oscar C. Au, Yuanfang Guo, Jiahao Pang and Jiali Li. "Arbitrary factor image interpolation using geodesic distance weighted 2D autoregressive modeling". IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP), pp. 2217-2221, 2013.
Yuanfang Guo, Oscar C. Au, Ketan Tang, Jiahao Pang, Wenxiu Sun, Lingfeng Xu, Jiali Li and Xingyu Zhang. "Data hiding in error diffused color halftone images". IEEE International Symposium on Circuits and Systems (ISCAS), pp. 2996-2999, 2013.
Hong Zhang, Oscar C. Au, Yongfang Shi, Xingyu Zhang, Ketan Tang and Yuanfang Guo. "HEVC-based adaptive quantization for screen content by detecting low contrast edge regions". IEEE International Symposium on Circuits and Systems (ISCAS), pp. 49-52, 2013.
Lingfeng Xu, Oscar C. Au, Wenxiu Sun, Lu Fang, Ketan Tang, Jiali Li and Yuanfang Guo. "Stereo matching by adaptive weighting selection based cost aggregation". IEEE International Symposium on Circuits and Systems (ISCAS), pp. 1420-1423, 2013.
Lin Sun, Oscar C. Au, Wei Dai, Yuanfang Guo and Ruobing Zou. "An adaptive frame complexity based rate quantization model for intra-frame rate control of High Efficiency Video Coding (HEVC)". Asia Pacific Signal and Information Processing Association Annual Summit and Conference (APSIPA ASC), pp. 1-6, 2012.
Ketan Tang, Oscar C. Au, Lu Fang, Yuanfang Guo, Pengfei Wang and Lingfeng Xu. "Super resolution for subpixel-based downsampled images". Asia Pacific Signal and Information Processing Association Annual Summit and Conference (APSIPA ASC), pp. 1-4, 2012.
Pengfei Wang, Oscar C. Au, Ketan Tang and Yuanfang Guo. "Image de-quantization via spatially varying sparsity prior". IEEE International Conference on Image Processing (ICIP), pp. 953-956, 2012.
Pengfei Wang, Oscar C. Au, Ketan Tang, Yuanfang Guo and Lu Fang. "From 2D Extrapolation to 1D Interpolation: Content Adaptive Image Bit-Depth Expansion". IEEE International Conference on Multimedia and Expo (ICME), pp. 170-175, 2012.
Yuanfang Guo, Oscar C. Au, Lu Fang and Ketan Tang. "Data hiding in halftone images by dual conjugate error diffusion". Asia Pacific Signal and Information Processing Association Annual Summit and Conference (APSIPA ASC), 2011.
Ketan Tang, Oscar C. Au, Lu Fang, Zhiding Yu and Yuanfang Guo. "Multi-scale analysis of color and texture for salient object detection". IEEE International Conference on Image Processing (ICIP), pp. 2401-2404, 2011.
Ketan Tang, Oscar C. Au, Lu Fang, Zhiding Yu and Yuanfang Guo. "Image Interpolation Using Autoregressive Model and Gauss-Seidel Optimization". International Conference on Image and Graphics (ICIG), pp. 66-69, 2011.
Yuanfang Guo, Oscar C. Au, Ketan Tang, Lu Fang and Zhiding Yu. "Data hiding in dot diffused halftone images". IEEE International Conference on Multimedia and Expo (ICME), pp. 1-6, 2011.
Zhiding Yu, Oscar C. Au, Ketan Tang, Lingfeng Xu, Wenxiu Sun and Yuanfang Guo. "Towards robust and efficient segmentation: An approach based on inter-region contour and intra-region content analysis". IEEE International Conference on Multimedia and Expo (ICME), pp. 1-6, 2011.
Ketan Tang, Oscar C. Au, Lu Fang, Zhiding Yu and Yuanfang Guo. "How anti-aliasing filter affects image contrast: An analysis from majorization theory perspective". IEEE International Conference on Multimedia and Expo (ICME), pp. 1-6, 2011.
John S. Ho, Oscar C. Au, Jiantao Zhou and Yuanfang Guo. "Inter-channel demosaicking traces for digital image forensics". IEEE International Conference on Multimedia and Expo (ICME), pp. 1475-1480, 2010.