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Face anti-spoofing is a critical technology for ensuring the security of face recognition systems. However, its ability to generalize across diverse scenarios remains a significant challenge. In this paper, we attribute the limited…

Computer Vision and Pattern Recognition · Computer Science 2025-05-07 Fangling Jiang , Qi Li , Weining Wang , Wei Shen , Bing Liu , Zhenan Sun

We present Fast Language-Image Pre-training (FLIP), a simple and more efficient method for training CLIP. Our method randomly masks out and removes a large portion of image patches during training. Masking allows us to learn from more…

Computer Vision and Pattern Recognition · Computer Science 2023-03-31 Yanghao Li , Haoqi Fan , Ronghang Hu , Christoph Feichtenhofer , Kaiming He

Face Anti-Spoofing (FAS) is crucial for securing face recognition systems against presentation attacks. With advancements in sensor manufacture and multi-modal learning techniques, many multi-modal FAS approaches have emerged. However, they…

Computer Vision and Pattern Recognition · Computer Science 2024-03-06 Xun Lin , Shuai Wang , Rizhao Cai , Yizhong Liu , Ying Fu , Zitong Yu , Wenzhong Tang , Alex Kot

Foundation models have recently gained tremendous popularity in medical image analysis. State-of-the-art methods leverage either paired image-text data via vision-language pre-training or unpaired image data via self-supervised pre-training…

Computer Vision and Pattern Recognition · Computer Science 2025-07-24 Lei Zhu , Jun Zhou , Rick Siow Mong Goh , Yong Liu

With the availability of diverse sensor modalities (i.e., RGB, Depth, Infrared) and the success of multi-modal learning, multi-modal face anti-spoofing (FAS) has emerged as a prominent research focus. The intuition behind it is that…

Computer Vision and Pattern Recognition · Computer Science 2025-05-28 Jingyi Yang , Xun Lin , Zitong Yu , Liepiao Zhang , Xin Liu , Hui Li , Xiaochen Yuan , Xiaochun Cao

Despite the remarkable performance of vision language models (VLMs) such as Contrastive Language Image Pre-training (CLIP), the large size of these models is a considerable obstacle to their use in federated learning (FL) systems where the…

Machine Learning · Computer Science 2025-03-11 Yihang Wu , Ahmad Chaddad , Christian Desrosiers , Tareef Daqqaq , Reem Kateb

The challenge of Domain Generalization (DG) in Face Anti-Spoofing (FAS) is the significant interference of domain-specific signals on subtle spoofing clues. Recently, some CLIP-based algorithms have been developed to alleviate this…

Computer Vision and Pattern Recognition · Computer Science 2025-04-08 Jiabao Guo , Ajian Liu , Yunfeng Diao , Jin Zhang , Hui Ma , Bo Zhao , Richang Hong , Meng Wang

The Visual Language Model, known for its robust cross-modal capabilities, has been extensively applied in various computer vision tasks. In this paper, we explore the use of CLIP (Contrastive Language-Image Pretraining), a vision-language…

Computer Vision and Pattern Recognition · Computer Science 2025-02-12 Huazhong Zhao , Lei Qi , Xin Geng

Real-world face recognition systems are vulnerable to both physical presentation attacks (PAs) and digital forgery attacks (DFs). We aim to achieve comprehensive protection of biometric data by implementing a unified physical-digital…

Computer Vision and Pattern Recognition · Computer Science 2025-12-09 Jiabao Guo , Yadian Wang , Hui Ma , Yuhao Fu , Ju Jia , Hui Liu , Shengeng Tang , Lechao Cheng , Yunfeng Diao , Ajian Liu

Face anti-spoofing (FAS) aims at distinguishing face spoof attacks from the authentic ones, which is typically approached by learning proper models for performing the associated classification task. In practice, one would expect such models…

Computer Vision and Pattern Recognition · Computer Science 2022-08-17 Zih-Ching Chen , Lin-Hsi Tsao , Chin-Lun Fu , Shang-Fu Chen , Yu-Chiang Frank Wang

Face Anti-Spoofing (FAS) is essential for the security of facial recognition systems in diverse scenarios such as payment processing and surveillance. Current multimodal FAS methods often struggle with effective generalization, mainly due…

Computer Vision and Pattern Recognition · Computer Science 2025-05-15 Yingjie Ma , Xun Lin , Zitong Yu , Xin Liu , Xiaochen Yuan , Weicheng Xie , Linlin Shen

The face anti-spoofing (FAS) method performs well under intra-domain setups. However, its cross-domain performance is unsatisfactory. As a result, the domain generalization (DG) method has gained more attention in FAS. Existing methods…

Computer Vision and Pattern Recognition · Computer Science 2023-06-06 Tianyi Zheng

Large-scale foundation models, such as CLIP, have demonstrated impressive zero-shot generalization performance on downstream tasks, leveraging well-designed language prompts. However, these prompt learning techniques often struggle with…

Computer Vision and Pattern Recognition · Computer Science 2023-11-30 Shirsha Bose , Ankit Jha , Enrico Fini , Mainak Singha , Elisa Ricci , Biplab Banerjee

Within the domain of medical analysis, extensive research has explored the potential of mutual learning between Masked Autoencoders(MAEs) and multimodal data. However, the impact of MAEs on intermodality remains a key challenge. We…

Image and Video Processing · Electrical Eng. & Systems 2024-06-03 Lei Li , Tianfang Zhang , Xinglin Zhang , Jiaqi Liu , Bingqi Ma , Yan Luo , Tao Chen

Owing to the advances in image processing technology and large-scale datasets, companies have implemented facial authentication processes, thereby stimulating increased focus on face anti-spoofing (FAS) against realistic presentation…

Computer Vision and Pattern Recognition · Computer Science 2023-07-25 Yunseung Lee , Youngjun Kwak , Jinho Shin

In this work, we study multi-domain learning for face anti-spoofing(MD-FAS), where a pre-trained FAS model needs to be updated to perform equally well on both source and target domains while only using target domain data for updating. We…

Computer Vision and Pattern Recognition · Computer Science 2023-04-18 Xiao Guo , Yaojie Liu , Anil Jain , Xiaoming Liu

As face recognition is widely used in diverse security-critical applications, the study of face anti-spoofing (FAS) has attracted more and more attention. Several FAS methods have achieved promising performances if the attack types in the…

Computer Vision and Pattern Recognition · Computer Science 2021-10-19 Yu-Chun Wang , Chien-Yi Wang , Shang-Hong Lai

Open-Vocabulary Video Instance Segmentation (VIS) is attracting increasing attention due to its ability to segment and track arbitrary objects. However, the recent Open-Vocabulary VIS attempts obtained unsatisfactory results, especially in…

Computer Vision and Pattern Recognition · Computer Science 2024-07-15 Hao Fang , Peng Wu , Yawei Li , Xinxin Zhang , Xiankai Lu

Large vision-language models (VLMs) like CLIP have demonstrated good zero-shot learning performance in the unsupervised domain adaptation task. Yet, most transfer approaches for VLMs focus on either the language or visual branches,…

Computer Vision and Pattern Recognition · Computer Science 2024-03-12 Xinyao Li , Yuke Li , Zhekai Du , Fengling Li , Ke Lu , Jingjing Li

The rapid development of photo-realistic face generation methods has raised significant concerns in society and academia, highlighting the urgent need for robust and generalizable face forgery detection (FFD) techniques. Although existing…

Computer Vision and Pattern Recognition · Computer Science 2025-06-03 Yaning Zhang , Tianyi Wang , Zitong Yu , Zan Gao , Linlin Shen , Shengyong Chen