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Behavioral science researchers have shown strong interest in disaggregating within-person relations from between-person differences (stable traits) using longitudinal data. In this paper, we propose a method of within-person variability…

Methodology · Statistics 2025-01-08 Satoshi Usami

Bias analysis for synthetic face detection is bound to become a critical topic in the coming years. Although many detection models have been developed and several datasets have been released to reliably identify synthetic content, one…

Computer Vision and Pattern Recognition · Computer Science 2025-07-30 Asmae Lamsaf , Lucia Cascone , Hugo Proença , João Neves

Daily monitoring of intra-personal facial changes associated with health and emotional conditions has great potential to be useful for medical, healthcare, and emotion recognition fields. However, the approach for capturing intra-personal…

Computer Vision and Pattern Recognition · Computer Science 2025-04-29 Yusuke Akamatsu , Terumi Umematsu , Hitoshi Imaoka , Shizuko Gomi , Hideo Tsurushima

Designing real-world person re-identification (re-id) systems requires attention to operational aspects not typically considered in academic research. Typically, the probe image or image sequence is matched to a gallery set with a fixed…

Computer Vision and Pattern Recognition · Computer Science 2018-08-17 Meng Zheng , Srikrishna Karanam , Richard J. Radke

While supervised techniques in re-identification are extremely effective, the need for large amounts of annotations makes them impractical for large camera networks. One-shot re-identification, which uses a singular labeled tracklet for…

Computer Vision and Pattern Recognition · Computer Science 2020-07-23 Dripta S. Raychaudhuri , Amit K. Roy-Chowdhury

Several refactorings performed while evolving software features aim to improve internal quality attributes like cohesion and complexity. Indeed, internal attributes can become critical if their measurements assume anomalous values. Yet,…

Software Engineering · Computer Science 2023-05-09 Eduardo Fernandes , Marcos Kalinowski

In the context of biometrics, matching confidence refers to the confidence that a given matching decision is correct. Since many biometric systems operate in critical decision-making processes, such as in forensics investigations,…

Computer Vision and Pattern Recognition · Computer Science 2023-04-24 Pedro C. Neto , Ana F. Sequeira , Jaime S. Cardoso , Philipp Terhörst

Token-based transformer world models have shown strong performance in visual reinforcement learning, but often suffer from temporal inconsistency in long-horizon rollouts, including object duplication, disappearance, and transmutation. A…

Machine Learning · Computer Science 2026-05-27 Youngin Kim , Ray Sun , Inho Kim , Bumsoo Park , Hyun Oh Song

Synthetic data has emerged as a promising alternative for training face recognition (FR) models, offering advantages in scalability, privacy compliance, and potential for bias mitigation. However, critical questions remain on whether both…

Computer Vision and Pattern Recognition · Computer Science 2025-07-29 Pavel Korshunov , Ketan Kotwal , Christophe Ecabert , Vidit Vidit , Amir Mohammadi , Sebastien Marcel

The instance discrimination paradigm has become dominant in unsupervised learning. It always adopts a teacher-student framework, in which the teacher provides embedded knowledge as a supervision signal for the student. The student learns…

Computer Vision and Pattern Recognition · Computer Science 2021-08-25 Weixin Feng , Yuanjiang Wang , Lihua Ma , Ye Yuan , Chi Zhang

In this paper, we focus on improving the online face liveness detection system to enhance the security of the downstream face recognition system. Most of the existing frame-based methods are suffering from the prediction inconsistency…

Computer Vision and Pattern Recognition · Computer Science 2020-06-15 Xiang Xu , Yuanjun Xiong , Wei Xia

Temporal Color Constancy (CC) is a recently proposed approach that challenges the conventional single-frame color constancy. The conventional approach is to use a single frame - shot frame - to estimate the scene illumination color. In…

Computer Vision and Pattern Recognition · Computer Science 2020-03-10 Yanlin Qian , Jani Käpylä , Joni-Kristian Kämäräinen , Samu Koskinen , Jiri Matas

This research introduces an innovative approach to explore the cognitive and biologically inspired underpinnings of feature vector splitting for analyzing the significance of different attributes in e-security biometric signature…

Computer Vision and Pattern Recognition · Computer Science 2024-05-22 Marcos Faundez , Moises Diaz , Miguel Angel Ferrer

In many conventional scientific investigations with high or ultra-high dimensional feature spaces, the relevant features, though sparse, are large in number compared with classical statistical problems, and the magnitude of their effects…

Statistics Theory · Mathematics 2011-07-14 Shan Luo , Zehua Chen

\begin{abstract} In recent years, the Finger Texture (FT) has attracted considerable attention as a biometric characteristic. It can provide efficient human recognition performance, because it has different human-specific features of…

Computer Vision and Pattern Recognition · Computer Science 2020-06-09 Raid R. O. Al-Nima , Tingting Han , Taolue Chen , Satnam Dlay , Jonathon Chambers

Deep learning methods achieve remarkable predictive performance in modeling complex, large-scale data. However, assessing the quality of derived models has become increasingly challenging, as more classical statistical assumptions may no…

Machine Learning · Statistics 2026-03-02 Daniele Zambon , Cesare Alippi

With the recent success of deep neural networks, remarkable progress has been achieved on face recognition. However, collecting large-scale real-world training data for face recognition has turned out to be challenging, especially due to…

Computer Vision and Pattern Recognition · Computer Science 2021-12-06 Haibo Qiu , Baosheng Yu , Dihong Gong , Zhifeng Li , Wei Liu , Dacheng Tao

Quantifying biometric characteristics within hand gestures involve derivation of fitness scores from a gesture and identity aware feature space. However, evaluating the quality of these scores remains an open question. Existing biometric…

Computer Vision and Pattern Recognition · Computer Science 2026-02-18 Aman Verma , Seshan Srirangarajan , Sumantra Dutta Roy

In order to model the evolution of user preference, we should learn user/item embeddings based on time-ordered item purchasing sequences, which is defined as Sequential Recommendation (SR) problem. Existing methods leverage sequential…

Information Retrieval · Computer Science 2021-08-24 Ziwei Fan , Zhiwei Liu , Jiawei Zhang , Yun Xiong , Lei Zheng , Philip S. Yu

The most frequently employed measure for performance characterisation of local feature detectors is repeatability, but it has been observed that this does not necessarily mirror actual performance. Presented are improved repeatability…

Computer Vision and Pattern Recognition · Computer Science 2015-04-30 Shoaib Ehsan , Nadia Kanwal , Adrian F. Clark , Klaus D. McDonald-Maier