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Morphing attack detection has become an essential component of face recognition systems for ensuring a reliable verification scenario. In this paper, we present a multimodal learning approach that can provide a textual description of…

Computer Vision and Pattern Recognition · Computer Science 2025-08-15 Sushrut Patwardhan , Raghavendra Ramachandra , Sushma Venkatesh

Self-supervised frameworks for representation learning have recently stirred up interest among the remote sensing community, given their potential to mitigate the high labeling costs associated with curating large satellite image datasets.…

Computer Vision and Pattern Recognition · Computer Science 2025-03-25 Hugo Chan-To-Hing , Bharadwaj Veeravalli

Sparse mixture of expert architectures (MoEs) scale model capacity without significant increases in training or inference costs. Despite their success, MoEs suffer from a number of issues: training instability, token dropping, inability to…

Machine Learning · Computer Science 2024-05-28 Joan Puigcerver , Carlos Riquelme , Basil Mustafa , Neil Houlsby

Amodal segmentation targets to predict complete object masks, covering both visible and occluded regions. This task poses significant challenges due to complex occlusions and extreme shape variation, from rigid furniture to highly…

Computer Vision and Pattern Recognition · Computer Science 2025-08-05 Zhixuan Li , Yujia Liu , Chen Hui , Jeonghaeng Lee , Sanghoon Lee , Weisi Lin

Face Morphing Attack Detection (MAD) is a critical challenge in face recognition security, where attackers can fool systems by interpolating the identity information of two or more individuals into a single face image, resulting in samples…

Computer Vision and Pattern Recognition · Computer Science 2025-08-13 Eduarda Caldeira , Fadi Boutros , Naser Damer

This project addresses the challenge of human motion prediction, a critical area for applications such as au- tonomous vehicle movement detection. Previous works have emphasized the need for low inference times to provide real time…

Computer Vision and Pattern Recognition · Computer Science 2024-05-13 Edmund Shieh , Joshua Lee Franco , Kang Min Bae , Tej Lalvani

Face morphing, a sophisticated presentation attack technique, poses significant security risks to face recognition systems. Traditional methods struggle to detect morphing attacks, which involve blending multiple face images to create a…

Computer Vision and Pattern Recognition · Computer Science 2023-09-06 Iurii Medvedev , Joana Pimenta , Nuno Gonçalves

Foundation models for medical image segmentation have achieved remarkable performance. Adaptive fine-tuning of natural image segmentation foundation models is crucial for medical image segmentation tasks. However, some limitations exist in…

Computer Vision and Pattern Recognition · Computer Science 2025-10-21 Xinwei Zhang , Hu Chen , Zhe Yuan , Sukun Tian , Peng Feng

Mixture-of-Experts (MoE) models scale large language models efficiently by sparsely activating experts, but once an expert is selected, it is executed fully. Hence, the trade-off between accuracy and computation in an MoE model typically…

Machine Learning · Computer Science 2026-02-09 Nurbek Tastan , Stefanos Laskaridis , Karthik Nandakumar , Samuel Horvath

The vulnerability of face recognition systems to morphing attacks has posed a serious security threat due to the wide adoption of face biometrics in the real world. Most existing morphing attack detection (MAD) methods require a large…

Computer Vision and Pattern Recognition · Computer Science 2022-10-28 Na Zhang , Shan Jia , Siwei Lyu , Xin Li

The Mixture of Experts (MoE) paradigm provides a powerful way to decompose dense layers into smaller, modular computations often more amenable to human interpretation, debugging, and editability. However, a major challenge lies in the…

Computer Vision and Pattern Recognition · Computer Science 2024-10-18 James Oldfield , Markos Georgopoulos , Grigorios G. Chrysos , Christos Tzelepis , Yannis Panagakis , Mihalis A. Nicolaou , Jiankang Deng , Ioannis Patras

The paper studies face spoofing, a.k.a. presentation attack detection (PAD) in the demanding scenarios of unknown types of attack. While earlier studies have revealed the benefits of ensemble methods, and in particular, a multiple kernel…

Computer Vision and Pattern Recognition · Computer Science 2022-04-25 Shervin Rahimzadeh Arashloo

Face Recognition (FR) systems can suffer from physical (i.e., print photo) and digital (i.e., DeepFake) attacks. However, previous related work rarely considers both situations at the same time. This implies the deployment of multiple…

Computer Vision and Pattern Recognition · Computer Science 2024-02-01 Hao Fang , Ajian Liu , Haocheng Yuan , Junze Zheng , Dingheng Zeng , Yanhong Liu , Jiankang Deng , Sergio Escalera , Xiaoming Liu , Jun Wan , Zhen Lei

Real-world model deployment across multiple domains requires multimodal models to operate under two complementary regimes: (1) multi-task pretraining, tasks are co-available at design time where related tasks could borrow representational…

Machine Learning · Computer Science 2026-05-12 Xing Han , Shravan Chaudhari , Tanvi Ranade , Rama Chellappa , Suchi Saria

Recent advances in large language models highlighted the excessive quadratic cost of self-attention. Despite the significant research efforts, subquadratic attention methods still suffer from inferior performance in practice. We hypothesize…

Machine Learning · Computer Science 2025-05-02 Piotr Piękos , Róbert Csordás , Jürgen Schmidhuber

In the domain of facial recognition security, multimodal Face Anti-Spoofing (FAS) is essential for countering presentation attacks. However, existing technologies encounter challenges due to modality biases and imbalances, as well as domain…

Computer Vision and Pattern Recognition · Computer Science 2024-12-25 Yingjie Ma , Zitong Yu , Xun Lin , Weicheng Xie , Linlin Shen

State-of-the-art defense mechanisms against face attacks achieve near perfect accuracies within one of three attack categories, namely adversarial, digital manipulation, or physical spoofs, however, they fail to generalize well when tested…

Computer Vision and Pattern Recognition · Computer Science 2021-04-07 Debayan Deb , Xiaoming Liu , Anil K. Jain

The sparsely activated mixture of experts (MoE) model presents a promising alternative to traditional densely activated (dense) models, enhancing both quality and computational efficiency. However, training MoE models from scratch demands…

Computer Vision and Pattern Recognition · Computer Science 2024-06-10 Xingkui Zhu , Yiran Guan , Dingkang Liang , Yuchao Chen , Yuliang Liu , Xiang Bai

Existing resource-adaptive LoRA federated fine-tuning methods enable clients to fine-tune models using compressed versions of global LoRA matrices, in order to accommodate various compute resources across clients. This compression…

Machine Learning · Computer Science 2025-07-16 Khiem Le , Tuan Tran , Ting Hua , Nitesh V. Chawla

Mixture-of-Experts (MoE) models provide a structured approach to combining specialized neural networks and offer greater interpretability than conventional ensembles. While MoEs have been successfully applied to image classification and…

Computer Vision and Pattern Recognition · Computer Science 2026-04-21 Svetlana Pavlitska , Malte Stüven , Beyza Keskin , J. Marius Zöllner