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The growing use of portrait images in computer vision highlights the need to protect personal identities. At the same time, anonymized images must remain useful for downstream computer vision tasks. In this work, we propose a unified…

Computer Vision and Pattern Recognition · Computer Science 2026-01-21 Ali Salar , Qing Liu , Guoying Zhao

Advanced facial recognition technologies and recommender systems with inadequate privacy technologies and policies for facial interactions increase concerns about bioprivacy violations. With the proliferation of video and live-streaming…

Computer Vision and Pattern Recognition · Computer Science 2024-10-01 Yubo Huang , Wenhao Feng , Xin Lai , Zixi Wang , Jingzehua Xu , Shuai Zhang , Hongjie He , Fan Chen

Vision is the most important sense for people, and it is also one of the main ways of cognition. As a result, people tend to utilize visual content to capture and share their life experiences, which greatly facilitates the transfer of…

Cryptography and Security · Computer Science 2023-03-30 Ruoyu Zhao , Yushu Zhang , Tao Wang , Wenying Wen , Yong Xiang , Xiaochun Cao

Visual re-localization means using a single image as input to estimate the camera's location and orientation relative to a pre-recorded environment. The highest-scoring methods are "structure based," and need the query camera's intrinsics…

Computer Vision and Pattern Recognition · Computer Science 2021-04-13 Mehmet Ozgur Turkoglu , Eric Brachmann , Konrad Schindler , Gabriel Brostow , Aron Monszpart

This paper proposes a person-centric and online approach to the challenging problem of localization and prediction of actions and interactions in videos. Typically, localization or recognition is performed in an offline manner where all the…

Computer Vision and Pattern Recognition · Computer Science 2016-12-06 Khurram Soomro , Haroon Idrees , Mubarak Shah

As machine learning becomes a practice and commodity, numerous cloud-based services and frameworks are provided to help customers develop and deploy machine learning applications. While it is prevalent to outsource model training and…

Cryptography and Security · Computer Science 2018-07-16 Tianwei Zhang , Zecheng He , Ruby B. Lee

The issue of detecting deepfakes has garnered significant attention in the research community, with the goal of identifying facial manipulations for abuse prevention. Although recent studies have focused on developing generalized models…

Computer Vision and Pattern Recognition · Computer Science 2023-05-23 Jiazhi Guan , Tianshu Hu , Hang Zhou , Zhizhi Guo , Lirui Deng , Chengbin Quan , Errui Ding , Youjian Zhao

Visual localization involves estimating a query image's 6-DoF (degrees of freedom) camera pose, which is a fundamental component in various computer vision and robotic tasks. This paper presents LoGS, a vision-based localization pipeline…

Computer Vision and Pattern Recognition · Computer Science 2024-10-16 Yuzhou Cheng , Jianhao Jiao , Yue Wang , Dimitrios Kanoulas

Tracking body and hand motions in the 3D space is essential for social and self-presence in augmented and virtual environments. Unlike the popular 3D pose estimation setting, the problem is often formulated as inside-out tracking based on…

Computer Vision and Pattern Recognition · Computer Science 2020-12-08 Mathias Parger , Chengcheng Tang , Yuanlu Xu , Christopher Twigg , Lingling Tao , Yijing Li , Robert Wang , Markus Steinberger

Location obfuscation functions generated by existing systems for ensuring location privacy are monolithic and do not allow users to customize their obfuscation range. This can lead to the user being mapped in undesirable locations (e.g.,…

Cryptography and Security · Computer Science 2022-10-04 Primal Pappachan , Chenxi Qiu , Anna Squicciarini , Vishnu Sharma Hunsur Manjunath

With the rapid advancement of artificial intelligence and deep learning, medical image analysis has become a critical tool in modern healthcare, significantly improving diagnostic accuracy and efficiency. However, AI-based methods also…

Computer Vision and Pattern Recognition · Computer Science 2024-12-06 Yanming Zhu , Xuefei Yin , Alan Wee-Chung Liew , Hui Tian

Accurate and robust visual localization under a wide range of viewing condition variations including season and illumination changes, as well as weather and day-night variations, is the key component for many computer vision and robotics…

Computer Vision and Pattern Recognition · Computer Science 2019-05-20 Tianxin Shi , Shuhan Shen , Xiang Gao , Lingjie Zhu

Massive captured face images are stored in the database for the identification of individuals. However, these images can be observed unintentionally by data managers, which is not at the will of individuals and may cause privacy violations.…

Computer Vision and Pattern Recognition · Computer Science 2024-08-26 Tao Wang , Yushu Zhang , Zixuan Yang , Xiangli Xiao , Hua Zhang , Zhongyun Hua

The accelerated use of digital cameras prompts an increasing concern about privacy and security, particularly in applications such as action recognition. In this paper, we propose an optimizing framework to provide robust visual privacy…

Computer Vision and Pattern Recognition · Computer Science 2023-05-23 Carlos Hinojosa , Miguel Marquez , Henry Arguello , Ehsan Adeli , Li Fei-Fei , Juan Carlos Niebles

Crowd management relies on inspection of surveillance video either by operators or by object detection models. These models are large, making it difficult to deploy them on resource constrained edge hardware. Instead, the computations are…

Computer Vision and Pattern Recognition · Computer Science 2021-10-29 Sander De Coninck , Sam Leroux , Pieter Simoens

Privacy considerations and bias in datasets are quickly becoming high-priority issues that the computer vision community needs to face. So far, little attention has been given to practical solutions that do not involve collection of new…

Computer Vision and Pattern Recognition · Computer Science 2021-03-12 Peiyang He , Charlie Griffin , Krzysztof Kacprzyk , Artjom Joosen , Michael Collyer , Aleksandar Shtedritski , Yuki M. Asano

Visual localization is a fundamental task that regresses the 6 Degree Of Freedom (6DoF) poses with image features in order to serve the high precision localization requests in many robotics applications. Degenerate conditions like motion…

Computer Vision and Pattern Recognition · Computer Science 2022-10-19 Yuchen Yang , Xudong Zhang , Shuang Gao , Jixiang Wan , Yishan Ping , Yuyue Liu , Jijunnan Li , Yandong Guo

Visual localization has traditionally been formulated as a pair-wise pose regression problem. Existing approaches mainly estimate relative poses between two images and employ a late-fusion strategy to obtain absolute pose estimates.…

Computer Vision and Pattern Recognition · Computer Science 2025-12-29 Tianchen Deng , Wenhua Wu , Kunzhen Wu , Guangming Wang , Siting Zhu , Shenghai Yuan , Xun Chen , Guole Shen , Zhe Liu , Hesheng Wang

Existing methods of privacy-preserving action recognition (PPAR) mainly focus on frame-level (spatial) privacy removal through 2D CNNs. Unfortunately, they have two major drawbacks. First, they may compromise temporal dynamics in input…

Computer Vision and Pattern Recognition · Computer Science 2023-03-14 Ming Li , Xiangyu Xu , Hehe Fan , Pan Zhou , Jun Liu , Jia-Wei Liu , Jiahe Li , Jussi Keppo , Mike Zheng Shou , Shuicheng Yan

Video anomaly detection (VAD) systems often prioritize accuracy while overlooking privacy concerns, limiting their suitability for real-world deployment. We propose the Orthogonal Projection Layer (OPL), a lightweight module that removes…

Computer Vision and Pattern Recognition · Computer Science 2026-05-12 Lei Wang , Wenxiang Diao , Andrew Busch , Jun Zhou , Yongsheng Gao