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The widespread dissemination of Deepfakes demands effective approaches that can detect perceptually convincing forged images. In this paper, we aim to capture the subtle manipulation artifacts at different scales using transformer models.…

Computer Vision and Pattern Recognition · Computer Science 2022-04-20 Junke Wang , Zuxuan Wu , Wenhao Ouyang , Xintong Han , Jingjing Chen , Ser-Nam Lim , Yu-Gang Jiang

Multimodal Magnetic Resonance Imaging (MRI) provides essential complementary information for analyzing brain tumor subregions. While methods using four common MRI modalities for automatic segmentation have shown success, they often face…

Image and Video Processing · Electrical Eng. & Systems 2024-11-14 Runze Cheng , Zhongao Sun , Ye Zhang , Chun Li

Multi-modality magnetic resonance imaging (MRI) is essential for the diagnosis and treatment of brain tumors. However, missing modalities are commonly observed due to limitations in scan time, scan corruption, artifacts, motion, and…

Image and Video Processing · Electrical Eng. & Systems 2025-01-08 Xiaojiao Xiao , Qinmin Vivian Hu , Guanghui Wang

In self-supervised learning, multi-granular features are heavily desired though rarely investigated, as different downstream tasks (e.g., general and fine-grained classification) often require different or multi-granular features,…

Computer Vision and Pattern Recognition · Computer Science 2022-03-29 Pan Zhou , Yichen Zhou , Chenyang Si , Weihao Yu , Teck Khim Ng , Shuicheng Yan

Any entity in the visual world can be hierarchically grouped based on shared characteristics and mapped to fine-grained sub-categories. While Multi-modal Large Language Models (MLLMs) achieve strong performance on coarse-grained visual…

Computer Vision and Pattern Recognition · Computer Science 2026-04-28 Hulingxiao He , Zijun Geng , Yuxin Peng

The availability of handy multi-modal (i.e., RGB-D) sensors has brought about a surge of face anti-spoofing research. However, the current multi-modal face presentation attack detection (PAD) has two defects: (1) The framework based on…

Computer Vision and Pattern Recognition · Computer Science 2023-05-08 Ajian Liu , Zichang Tan , Zitong Yu , Chenxu Zhao , Jun Wan , Yanyan Liang , Zhen Lei , Du Zhang , Stan Z. Li , Guodong Guo

The booming remote sensing (RS) technology is giving rise to a novel multimodality generalization task, which requires the model to overcome data heterogeneity while possessing powerful cross-scene generalization ability. Moreover, most…

Computer Vision and Pattern Recognition · Computer Science 2025-11-17 Junjie Zhang , Feng Zhao , Hanqiang Liu , Jun Yu

Deepfakes are realistic face manipulations that can pose serious threats to security, privacy, and trust. Existing methods mostly treat this task as binary classification, which uses digital labels or mask signals to train the detection…

Computer Vision and Pattern Recognition · Computer Science 2024-02-08 Ke Sun , Shen Chen , Taiping Yao , Haozhe Yang , Xiaoshuai Sun , Shouhong Ding , Rongrong Ji

Federated Learning (FL) enables collaborative model training across decentralized edge devices while preserving data privacy. However, statistical heterogeneity among clients, often manifested as non-IID label distributions, poses…

Machine Learning · Computer Science 2026-01-06 Sameer Rahil , Zain Abdullah Ahmad , Talha Asif

Videos can be manipulated by duplicating a sequence of consecutive frames with the goal of concealing or imitating a specific content in the same video. In this paper, we propose a novel coarse-to-fine framework based on deep Convolutional…

Computer Vision and Pattern Recognition · Computer Science 2019-05-07 Chengjiang Long , Arslan Basharat , Anthony Hoogs

Tasks that rely on multi-modal information typically include a fusion module that combines information from different modalities. In this work, we develop a Refiner Fusion Network (ReFNet) that enables fusion modules to combine strong…

Computer Vision and Pattern Recognition · Computer Science 2021-04-09 Sethuraman Sankaran , David Yang , Ser-Nam Lim

Existing face forgery detection usually follows the paradigm of training models in a single domain, which leads to limited generalization capacity when unseen scenarios and unknown attacks occur. In this paper, we elaborately investigate…

Computer Vision and Pattern Recognition · Computer Science 2024-07-01 Yingxin Lai , Zitong Yu , Jing Yang , Bin Li , Xiangui Kang , Linlin Shen

In multimodal misinformation, deception usually arises not just from pixel-level manipulations in an image, but from the semantic and contextual claim jointly expressed by the image-text pair. Yet most deepfake detectors, engineered to…

Computer Vision and Pattern Recognition · Computer Science 2026-02-03 A S M Sharifuzzaman Sagar , Mohammed Bennamoun , Farid Boussaid , Naeha Sharif , Lian Xu , Shaaban Sahmoud , Ali Kishk

False Data Injection (FDI) attacks are a common form of Cyber-attack targetting smart grids. Detection of stealthy FDI attacks is impossible by the current bad data detection systems. Machine learning is one of the alternative methods…

Cryptography and Security · Computer Science 2019-07-09 Jacob Sakhnini , Hadis Karimipour , Ali Dehghantanha

Traditional fine-grained image classification typically relies on large-scale training samples with annotated ground-truth. However, some sub-categories have few available samples in real-world applications, and current few-shot models…

Computer Vision and Pattern Recognition · Computer Science 2022-10-27 Hegui Zhu , Zhan Gao , Jiayi Wang , Yange Zhou , Chengqing Li

A cell-free massive multiple-input multiple-output (CF-mMIMO) system is considered for enhancing the monitoring performance of wireless surveillance, where a large number of distributed multi-antenna aided legitimate monitoring nodes (MNs)…

Information Theory · Computer Science 2024-07-18 Zahra Mobini , Hien Quoc Ngo , Michail Matthaiou , Lajos Hanzo

Deep hashing has recently received attention in cross-modal retrieval for its impressive advantages. However, existing hashing methods for cross-modal retrieval cannot fully capture the heterogeneous multi-modal correlation and exploit the…

Information Retrieval · Computer Science 2020-04-02 Li Wang , Lei Zhu , En Yu , Jiande Sun , Huaxiang Zhang

Multimodal deep learning, especially vision-language models, have gained significant traction in recent years, greatly improving performance on many downstream tasks, including content moderation and violence detection. However, standard…

Computer Vision and Pattern Recognition · Computer Science 2024-08-05 Zhuokai Zhao , Harish Palani , Tianyi Liu , Lena Evans , Ruth Toner

The rapid development of generative AI is a double-edged sword, which not only facilitates content creation but also makes image manipulation easier and more difficult to detect. Although current image forgery detection and localization…

Computer Vision and Pattern Recognition · Computer Science 2025-04-15 Zhipei Xu , Xuanyu Zhang , Runyi Li , Zecheng Tang , Qing Huang , Jian Zhang

Accurate beam prediction is essential for mitigating signalling overhead and latency in integrated sensing and communication-enabled massive multi-input multi-output systems. With the aid of multimodal learning, the prediction accuracy can…

Signal Processing · Electrical Eng. & Systems 2026-05-15 Zijian Zheng , Wenqiang Yi , Hyundong Shin , Arumugam Nallanathan