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Developing a face anti-spoofing model that meets the security requirements of clients worldwide is challenging due to the domain gap between training datasets and diverse end-user test data. Moreover, for security and privacy reasons, it is…

计算机视觉与模式识别 · 计算机科学 2025-04-01 Zhuowei Li , Tianchen Zhao , Xiang Xu , Zheng Zhang , Zhihua Li , Xuanbai Chen , Qin Zhang , Alessandro Bergamo , Anil K. Jain , Yifan Xing

The creation of altered and manipulated faces has become more common due to the improvement of DeepFake generation methods. Simultaneously, we have seen detection models' development for differentiating between a manipulated and original…

计算机视觉与模式识别 · 计算机科学 2021-08-27 Sowmen Das , Selim Seferbekov , Arup Datta , Md. Saiful Islam , Md. Ruhul Amin

The rapid evolution of generative paradigms has enabled the creation of highly realistic imagery, which escalating the risks of identity fraud and the dissemination of disinformation. Most existing approaches frame face forgery detection as…

计算机视觉与模式识别 · 计算机科学 2026-05-14 Qingchao Jiang , Zhenxuan Hou , Zhiying Zhu , Zhenxing Qian , Xinpeng Zhang , Zaiwang Gu

Face representation in the wild is extremely hard due to the large scale face variations. To this end, some deep convolutional neural networks (CNNs) have been developed to learn discriminative feature by designing properly margin-based…

计算机视觉与模式识别 · 计算机科学 2022-03-29 Jianjun Qian , Shumin Zhu , Chaoyu Zhao , Jian Yang , Wai Keung Wong

In the rapidly evolving landscape of digital security, biometric authentication systems, particularly facial recognition, have emerged as integral components of various security protocols. However, the reliability of these systems is…

计算机视觉与模式识别 · 计算机科学 2026-04-13 Oleksandr Kuznetsov , Emanuele Frontoni , Luca Romeo , Riccardo Rosati , Andrea Maranesi , Alessandro Muscatello

Image hiding is often referred to as steganography, which aims to hide a secret image in a cover image of the same resolution. Many steganography models are based on genera-tive adversarial networks (GANs) and variational autoencoders…

计算机视觉与模式识别 · 计算机科学 2025-10-15 Chengde Lin , Xuezhu Gong , Shuxue Ding , Mingzhe Yang , Xijun Lu , Chengjun Mo

Face anti-spoofing (FAS) plays a critical role in securing face recognition systems from different presentation attacks. Previous works leverage auxiliary pixel-level supervision and domain generalization approaches to address unseen spoof…

计算机视觉与模式识别 · 计算机科学 2022-03-29 Chien-Yi Wang , Yu-Ding Lu , Shang-Ta Yang , Shang-Hong Lai

Detecting anomalies in datasets is a longstanding problem in machine learning. In this context, anomalies are defined as a sample that significantly deviates from the remaining data. Meanwhile, optimal transport (OT) is a field of…

机器学习 · 统计学 2025-07-09 Eduardo Fernandes Montesuma , Adel El Habazi , Fred Ngole Mboula

Optimal Transport (OT) distances such as Wasserstein have been used in several areas such as GANs and domain adaptation. OT, however, is very sensitive to outliers (samples with large noise) in the data since in its objective function,…

机器学习 · 计算机科学 2020-10-13 Yogesh Balaji , Rama Chellappa , Soheil Feizi

Diffusion Models (DMs) have achieved remarkable progress in generative modeling. However, the mismatch between the forward terminal distribution and reverse initial distribution introduces prior error, leading to deviations of sampling…

机器学习 · 计算机科学 2026-02-06 Zhanpeng Wang , Shenghao Li , Jiameng Che , Chen Wang , Shangling Jui , Na Lei , Zhongxuan Luo

Optimal Transport (OT) theory has seen an increasing amount of attention from the computer science community due to its potency and relevance in modeling and machine learning. It introduces means that serve as powerful ways to compare…

机器学习 · 计算机科学 2021-06-04 Luis Caicedo Torres , Luiz Manella Pereira , M. Hadi Amini

Optimal transport (OT) is a framework that can be used to guide the optimal allocation of a limited amount of resources. The classical OT paradigm does not consider malicious attacks in its formulation and thus the designed transport plan…

系统与控制 · 电气工程与系统科学 2021-06-15 Jason Hughes , Juntao Chen

We demonstrate the effectiveness of one of the many multi-tracer analyses enabled by Optimal Transport (OT) reconstruction. Leveraging a semi-discrete OT algorithm, we determine the displacements between initial and observed positions of…

宇宙学与河外天体物理 · 物理学 2024-03-19 Farnik Nikakhtar , Ravi K. Sheth , Nikhil Padmanabhan , Bruno Lévy , Roya Mohayaee

We propose Mirror Descent Optimal Transport (MDOT), a novel method for solving discrete optimal transport (OT) problems with high precision, by unifying temperature annealing in entropic-regularized OT (EOT) with mirror descent techniques.…

机器学习 · 计算机科学 2025-06-04 Mete Kemertas , Allan D. Jepson , Amir-massoud Farahmand

This work establishes a framework for solving inverse boundary problems with the geodesic based quadratic Wasserstein distance ($W_{2}$). A general form of the Fr\'echet gradient is systematically derived by optimal transportation (OT)…

数值分析 · 数学 2022-10-31 Gang Bao , Yixuan Zhang

Dark environment becomes a challenge for computer vision algorithms owing to insufficient photons and undesirable noise. To enhance object detection in a dark environment, we propose a novel multitask auto encoding transformation (MAET)…

计算机视觉与模式识别 · 计算机科学 2022-05-09 Ziteng Cui , Guo-Jun Qi , Lin Gu , Shaodi You , Zenghui Zhang , Tatsuya Harada

The objective in statistical Optimal Transport (OT) is to consistently estimate the optimal transport plan/map solely using samples from the given source and target marginal distributions. This work takes the novel approach of posing…

机器学习 · 计算机科学 2020-11-11 J. Saketha Nath , Pratik Jawanpuria

Optimal transport (OT) compares probability distributions by computing a meaningful alignment between their samples. CO-optimal transport (COOT) takes this comparison further by inferring an alignment between features as well. While this…

All-in-one image restoration has emerged as a practical and promising low-level vision task for real-world applications. In this context, the key issue lies in how to deal with different types of degraded images simultaneously. In this…

计算机视觉与模式识别 · 计算机科学 2024-11-05 Xiaole Tang , Xiang Gu , Xiaoyi He , Xin Hu , Jian Sun

Optimal transport (OT) provides powerful tools for comparing probability measures in various types. The Wasserstein distance which arises naturally from the idea of OT is widely used in many machine learning applications. Unfortunately,…

最优化与控制 · 数学 2021-06-03 Shu Liu , Haodong Sun , Hongyuan Zha