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Diffusion models are becoming defector generative models, which generate exceptionally high-resolution image data. Training effective diffusion models require massive real data, which is privately owned by distributed parties. Each data…

Artificial Intelligence · Computer Science 2024-06-03 Jiyue Huang , Chi Hong , Lydia Y. Chen , Stefanie Roos

Domain-generalizable re-identification (DG Re-ID) aims to train a model on one or more source domains and evaluate its performance on unseen target domains, a task that has attracted growing attention due to its practical relevance. While…

Computer Vision and Pattern Recognition · Computer Science 2025-10-20 Jiachen Li , Xiaojin Gong

As an emerging biological identification technology, vision-based gait identification is an important research content in biometrics. Most existing gait identification methods extract features from gait videos and identify a probe sample by…

Computer Vision and Pattern Recognition · Computer Science 2021-11-25 Xingkai Zheng , Xirui Li , Ke Xu , Xinghao Jiang , Tanfeng Sun

Gait as a biometric trait has attracted much attention in many security and privacy applications such as identity recognition and authentication, during the last few decades. Because of its nature as a long-distance biometric trait, gait…

Computer Vision and Pattern Recognition · Computer Science 2020-09-18 BingZhang Hu , Yu Guan , Yan Gao , Yang Long , Nicholas Lane , Thomas Ploetz

Current diffusion-based acceleration methods for long-portrait animation struggle to ensure identity (ID) consistency. This paper presents FlashPortrait, an end-to-end video diffusion transformer capable of synthesizing ID-preserving,…

Computer Vision and Pattern Recognition · Computer Science 2025-12-19 Shuyuan Tu , Yueming Pan , Yinming Huang , Xintong Han , Zhen Xing , Qi Dai , Kai Qiu , Chong Luo , Zuxuan Wu

Current gait analysis faces challenges in various aspects, including limited and poorly labeled data within existing wearable electronics databases, difficulties in collecting patient data due to privacy concerns, and the inadequacy of the…

Signal Processing · Electrical Eng. & Systems 2026-01-05 Wenwen Zhang , Hao Zhang , Zenan Jiang , Amir Servati , Peyman Servati

Generative models have demonstrated strong performance in conditional settings and can be viewed as a form of data compression, where the condition serves as a compact representation. However, their limited controllability and…

Machine Learning · Computer Science 2025-07-04 Xiao Li , Liangji Zhu , Anand Rangarajan , Sanjay Ranka

Diffusion models (DMs) have revolutionized data generation, particularly in text-to-image (T2I) synthesis. However, the widespread use of personalized generative models raises significant concerns regarding privacy violations and copyright…

Computer Vision and Pattern Recognition · Computer Science 2025-02-25 Xinwei Liu , Xiaojun Jia , Yuan Xun , Hua Zhang , Xiaochun Cao

Gait data captured by inertial sensors have demonstrated promising results on user authentication. However, most existing approaches stored the enrolled gait pattern insecurely for matching with the validating pattern, thus, posed critical…

Computer Vision and Pattern Recognition · Computer Science 2021-08-06 Lam Tran , Thuc Nguyen , Hyunil Kim , Deokjai Choi

Probabilistic human motion prediction aims to forecast multiple possible future movements from past observations. While current approaches report high diversity and realism, they often generate motions with undetected limb stretching and…

Computer Vision and Pattern Recognition · Computer Science 2025-07-09 Cecilia Curreli , Dominik Muhle , Abhishek Saroha , Zhenzhang Ye , Riccardo Marin , Daniel Cremers

Text-to-image diffusion models have demonstrated remarkable effectiveness in rapid and high-fidelity personalization, even when provided with only a few user images. However, the effectiveness of personalization techniques has lead to…

Computer Vision and Pattern Recognition · Computer Science 2025-10-06 Naresh Kumar Devulapally , Shruti Agarwal , Tejas Gokhale , Vishnu Suresh Lokhande

Current gait recognition methodologies generally necessitate retraining when encountering new datasets. Nevertheless, retrained models frequently encounter difficulties in preserving knowledge from previous datasets, leading to a…

Computer Vision and Pattern Recognition · Computer Science 2025-08-06 Jingjie Wang , Shunli Zhang , Xiang Wei , Senmao Tian

Diffusion models have revolutionized video generation, becoming essential tools in creative content generation and physical simulation. Transformer-based architectures (DiTs) and classifier-free guidance (CFG) are two cornerstones of this…

Computer Vision and Pattern Recognition · Computer Science 2025-12-04 Zhiye Song , Steve Dai , Ben Keller , Brucek Khailany

Advancing face morphing attack techniques is crucial to anticipate evolving threats and develop robust defensive mechanisms for identity verification systems. This work introduces DCMorph, a dual-stream diffusion-based morphing framework…

Computer Vision and Pattern Recognition · Computer Science 2026-04-24 Tahar Chettaoui , Eduarda Caldeira , Guray Ozgur , Raghavendra Ramachandra , Fadi Boutros , Naser Damer

Latent diffusion models can be used as a powerful augmentation method to artificially extend datasets for enhanced training. To the human eye, these augmented images look very different to the originals. Previous work has suggested to use…

Computer Vision and Pattern Recognition · Computer Science 2025-04-09 Julian Lorenz , Katja Ludwig , Valentin Haug , Rainer Lienhart

Gait recognition stands as one of the most pivotal remote identification technologies and progressively expands across research and industry communities. However, existing gait recognition methods heavily rely on task-specific upstream…

Computer Vision and Pattern Recognition · Computer Science 2024-03-25 Dingqiang Ye , Chao Fan , Jingzhe Ma , Xiaoming Liu , Shiqi Yu

As a unique biometric that can be perceived at a distance, gait has broad applications in person authentication, social security, and so on. Existing gait recognition methods suffer from changes in viewpoint and clothing and barely consider…

Computer Vision and Pattern Recognition · Computer Science 2023-10-03 Jingqi Li , Jiaqi Gao , Yuzhen Zhang , Hongming Shan , Junping Zhang

Face recognition poses serious privacy risks due to its reliance on sensitive and immutable biometric data. While modern systems mitigate privacy risks by mapping facial images to embeddings (commonly regarded as privacy-preserving), model…

Cryptography and Security · Computer Science 2026-05-04 Hanrui Wang , Shuo Wang , Chun-Shien Lu , Isao Echizen

Face inpainting techniques recover missing or occluded facial regions in a visually realistic manner, but preserving the identity in the final output remains a fundamental challenge. Identity consistency is crucial for downstream…

Computer Vision and Pattern Recognition · Computer Science 2026-05-19 João Santos , Carlos Santiago , Manuel Marques

In latest years plethora of identity-preserving adapters for a personalized generation with diffusion models have been released. Their main disadvantage is that they are dominantly trained jointly with base diffusion models, which suffer…

Computer Vision and Pattern Recognition · Computer Science 2025-05-30 Sergey Karpukhin , Vadim Titov , Andrey Kuznetsov , Aibek Alanov
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