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Extracting robust feature representation is critical for object re-identification to accurately identify objects across non-overlapping cameras. Although having a strong representation ability, the Vision Transformer (ViT) tends to overfit…

Computer Vision and Pattern Recognition · Computer Science 2024-08-30 Lei Tan , Pingyang Dai , Jie Chen , Liujuan Cao , Yongjian Wu , Rongrong Ji

Recent advances on Vision Transformer (ViT) and its improved variants have shown that self-attention-based networks surpass traditional Convolutional Neural Networks (CNNs) in most vision tasks. However, existing ViTs focus on the standard…

Computer Vision and Pattern Recognition · Computer Science 2022-05-24 Xiaofeng Mao , Gege Qi , Yuefeng Chen , Xiaodan Li , Ranjie Duan , Shaokai Ye , Yuan He , Hui Xue

Biometrics emerged as a robust solution for security systems. However, given the dissemination of biometric applications, criminals are developing techniques to circumvent them by simulating physical or behavioral traits of legal users…

Computer Vision and Pattern Recognition · Computer Science 2018-10-12 Gustavo Botelho de Souza , João Paulo Papa , Aparecido Nilceu Marana

Face verification is a significant component of identity authentication in various applications including online banking and secure access to personal devices. The majority of the existing face image datasets often suffer from notable…

Computer Vision and Pattern Recognition · Computer Science 2025-11-24 Georgia Baltsou , Ioannis Sarridis , Christos Koutlis , Symeon Papadopoulos

In the field of deep learning applied to face recognition, securing large-scale, high-quality datasets is vital for attaining precise and reliable results. However, amassing significant volumes of high-quality real data faces hurdles such…

Computer Vision and Pattern Recognition · Computer Science 2023-05-18 Omer Granoviter , Alexey Gruzdev , Vladimir Loginov , Max Kogan , Orly Zvitia

Multi-modal face anti-spoofing (FAS) aims to detect genuine human presence by extracting discriminative liveness cues from multiple modalities, such as RGB, infrared (IR), and depth images, to enhance the robustness of biometric…

Computer Vision and Pattern Recognition · Computer Science 2025-07-09 Jun-Xiong Chong , Fang-Yu Hsu , Ming-Tsung Hsu , Yi-Ting Lin , Kai-Heng Chien , Chiou-Ting Hsu , Pei-Kai Huang

This paper presents a novel multi-identity face reenactment framework, named FReeNet, to transfer facial expressions from an arbitrary source face to a target face with a shared model. The proposed FReeNet consists of two parts: Unified…

Computer Vision and Pattern Recognition · Computer Science 2020-05-19 Jiangning Zhang , Xianfang Zeng , Mengmeng Wang , Yusu Pan , Liang Liu , Yong Liu , Yu Ding , Changjie Fan

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…

Computer Vision and Pattern Recognition · Computer Science 2022-03-29 Chien-Yi Wang , Yu-Ding Lu , Shang-Ta Yang , Shang-Hong Lai

Biometric authentication systems are crucial for security, but developing them involves various complexities, including privacy, security, and achieving high accuracy without directly storing pure biometric data in storage. We introduce an…

Computer Vision and Pattern Recognition · Computer Science 2026-04-13 Dmytro Zakharov , Oleksandr Kuznetsov , Emanuele Frontoni , Natalia Kryvinska

Recent advances in face super-resolution research have utilized the Transformer architecture. This method processes the input image into a series of small patches. However, because of the strong correlation between different facial…

Computer Vision and Pattern Recognition · Computer Science 2025-02-19 Chao Yang , Yong Fan , Cheng Lu , Minghao Yuan , Zhijing Yang

Vision transformers (ViT) have demonstrated impressive performance across various machine vision problems. These models are based on multi-head self-attention mechanisms that can flexibly attend to a sequence of image patches to encode…

Computer Vision and Pattern Recognition · Computer Science 2021-11-29 Muzammal Naseer , Kanchana Ranasinghe , Salman Khan , Munawar Hayat , Fahad Shahbaz Khan , Ming-Hsuan Yang

We present an automatic face verification system inspired by known properties of biological systems. In the proposed algorithm the whole image is converted from the spatial to polar frequency domain by a Fourier-Bessel Transform (FBT).…

Computer Vision and Pattern Recognition · Computer Science 2009-09-29 Yossi Zana , Roberto M. Cesar-Jr , Regis de A. Barbosa

Person re-identification (ReID) is an extremely important area in both surveillance and mobile applications, requiring strong accuracy with minimal computational cost. State-of-the-art methods give good accuracy but with high computational…

Computer Vision and Pattern Recognition · Computer Science 2026-01-05 Anns Ijaz , Muhammad Azeem Javed

The security of biometric authentication is increasingly critical as digital identity systems expand. Iris recognition offers high reliability due to its distinctive and stable texture patterns. Recent progress in deep learning, especially…

Computer Vision and Pattern Recognition · Computer Science 2025-12-01 Moh Imam Faiz , Aviv Yuniar Rahman , Rangga Pahlevi Putra

The Vision Transformer (ViT) architecture has become widely recognized in computer vision, leveraging its self-attention mechanism to achieve remarkable success across various tasks. Despite its strengths, ViT's optimization remains…

Computer Vision and Pattern Recognition · Computer Science 2025-08-26 Haoyu Yun , Hamid Krim

Vision Transformer (ViT) has recently gained significant attention in solving computer vision (CV) problems due to its capability of extracting informative features and modeling long-range dependencies through the attention mechanism.…

Computer Vision and Pattern Recognition · Computer Science 2024-07-12 Yao Qiang , Chengyin Li , Prashant Khanduri , Dongxiao Zhu

Online information systems currently heavily rely on the username and password traditional method for protecting information and controlling access. With the advancement in biometric technology and popularity of fields like AI and Machine…

Computer Vision and Pattern Recognition · Computer Science 2021-03-30 Ben Wycliff Mugalu , Rodrick Calvin Wamala , Jonathan Serugunda , Andrew Katumba

Generative Adversarial Networks (GANs) can generate realistic fake face images that can easily fool human beings.On the contrary, a common Convolutional Neural Network(CNN) discriminator can achieve more than 99.9% accuracyin discerning…

Computer Vision and Pattern Recognition · Computer Science 2020-03-20 Zhengzhe Liu , Xiaojuan Qi , Philip Torr

Face anti-spoofing (FAS) or presentation attack detection is an essential component of face recognition systems deployed in security-critical applications. Existing FAS methods have poor generalizability to unseen spoof types, camera…

Computer Vision and Pattern Recognition · Computer Science 2023-09-29 Koushik Srivatsan , Muzammal Naseer , Karthik Nandakumar

Fine-grained classification remains a challenging task because distinguishing categories needs learning complex and local differences. Diversity in the pose, scale, and position of objects in an image makes the problem even more difficult.…

Computer Vision and Pattern Recognition · Computer Science 2021-09-03 Mahdi Darvish , Mahsa Pouramini , Hamid Bahador