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Heatmap-based methods have become the mainstream method for pose estimation due to their superior performance. However, heatmap-based approaches suffer from significant quantization errors with downscale heatmaps, which result in limited…

Computer Vision and Pattern Recognition · Computer Science 2023-08-01 Haonan Wang , Jie Liu , Jie Tang , Gangshan Wu

Person re-identification is a critical privacy attack in publicly shared healthcare data as per Health Insurance Portability and Accountability Act (HIPAA) privacy rule. In this paper, we investigate the possibility of a new type of privacy…

Cryptography and Security · Computer Science 2021-06-23 Mohammad Arif Ul Alam

User profiling is a critical component of adaptive risk-based authentication, yet it raises significant privacy concerns, particularly when handling sensitive data. Profiling involves collecting and aggregating various user features,…

Cryptography and Security · Computer Science 2025-08-05 Yaser Baseri , Abdelhakim Senhaji Hafid , Dimitrios Makrakis

Privacy protection from surreptitious video recordings is an important societal challenge. We desire a computer vision system (e.g., a robot) that can recognize human activities and assist our daily life, yet ensure that it is not recording…

Computer Vision and Pattern Recognition · Computer Science 2016-12-28 Michael S. Ryoo , Brandon Rothrock , Charles Fleming , Hyun Jong Yang

Wide-scale use of visual surveillance in public spaces puts individual privacy at stake while increasing resource consumption (energy, bandwidth, and computation). Neuromorphic vision sensors (event-cameras) have been recently considered a…

Computer Vision and Pattern Recognition · Computer Science 2023-08-21 Shafiq Ahmad , Pietro Morerio , Alessio Del Bue

The 2D heatmap-based approaches have dominated Human Pose Estimation (HPE) for years due to high performance. However, the long-standing quantization error problem in the 2D heatmap-based methods leads to several well-known drawbacks: 1)…

Computer Vision and Pattern Recognition · Computer Science 2022-07-06 Yanjie Li , Sen Yang , Peidong Liu , Shoukui Zhang , Yunxiao Wang , Zhicheng Wang , Wankou Yang , Shu-Tao Xia

High-resolution representation is essential for achieving good performance in human pose estimation models. To obtain such features, existing works utilize high-resolution input images or fine-grained image tokens. However, this dense…

Computer Vision and Pattern Recognition · Computer Science 2025-01-07 Xiaoqi An , Lin Zhao , Chen Gong , Nannan Wang , Di Wang , Jian Yang

Growing privacy concerns and regulations like GDPR and CCPA necessitate pseudonymization techniques that protect identity in image datasets. However, retaining utility is also essential. Traditional methods like masking and blurring degrade…

Computer Vision and Pattern Recognition · Computer Science 2024-12-10 Kartik Patwari , David Schneider , Xiaoxiao Sun , Chen-Nee Chuah , Lingjuan Lyu , Vivek Sharma

Previous works on Human Pose and Shape Estimation (HPSE) from RGB images can be broadly categorized into two main groups: parametric and non-parametric approaches. Parametric techniques leverage a low-dimensional statistical body model for…

Computer Vision and Pattern Recognition · Computer Science 2024-07-16 Guénolé Fiche , Simon Leglaive , Xavier Alameda-Pineda , Antonio Agudo , Francesc Moreno-Noguer

Deep learning has become a cornerstone of modern machine learning. It relies heavily on vast datasets and significant computational resources for high performance. This data often contains sensitive information, making privacy a major…

Cryptography and Security · Computer Science 2025-10-07 Nges Brian Njungle , Eric Jahns , Milan Stojkov , Michel A. Kinsy

Human beings rely heavily on estimation of poses in order to access their body movements. Human pose estimation methods take advantage of computer vision advances in order to track human body movements in real life applications. This comes…

Computer Vision and Pattern Recognition · Computer Science 2025-06-05 Arindam Chaudhuri

Existing multi-person pose estimators can be roughly divided into two-stage approaches (top-down and bottom-up approaches) and one-stage approaches. The two-stage methods either suffer high computational redundancy for additional person…

Computer Vision and Pattern Recognition · Computer Science 2020-12-01 Junqi Lin , Huixin Miao , Junjie Cao , Zhixun Su , Risheng Liu

A secure human identification protocol aims at authenticating human users to a remote server when even the users' inputs are not hidden from an adversary. Recently, the authors proposed a human identification protocol in the RSA Conference…

Cryptography and Security · Computer Science 2007-05-23 Hassan Jameel , Heejo Lee , Sungyoung Lee

Hyperparameter optimization, also known as hyperparameter tuning, is a widely recognized technique for improving model performance. Regrettably, when training private ML models, many practitioners often overlook the privacy risks associated…

Machine Learning · Computer Science 2023-11-28 Hua Wang , Sheng Gao , Huanyu Zhang , Weijie J. Su , Milan Shen

This paper investigates the dependence of existing state-of-the-art person re-identification models on the presence and visibility of human faces. We apply a face detection and blurring algorithm to create anonymized versions of several…

Computer Vision and Pattern Recognition · Computer Science 2020-10-14 Julia Dietlmeier , Joseph Antony , Kevin McGuinness , Noel E. O'Connor

Human pose estimation is the task of localizing body keypoints from still images. The state-of-the-art methods suffer from insufficient examples of challenging cases such as symmetric appearance, heavy occlusion and nearby person. To…

Computer Vision and Pattern Recognition · Computer Science 2020-08-04 Yanrui Bin , Xuan Cao , Xinya Chen , Yanhao Ge , Ying Tai , Chengjie Wang , Jilin Li , Feiyue Huang , Changxin Gao , Nong Sang

The tuning of hyperparameters in distributed machine learning can substantially impact model performance. When the hyperparameters are tuned on sensitive data, privacy becomes an important challenge and to this end, differential privacy has…

Machine Learning · Computer Science 2025-10-08 Johannes Liebenow , Thorsten Peinemann , Esfandiar Mohammadi

The preservation of privacy has emerged as a critical topic in the era of artificial intelligence. However, current work focuses on user-oriented privacy, overlooking severe enterprise data leakage risks exacerbated by the…

Cryptography and Security · Computer Science 2025-08-11 Zhihao Yao , Yuxuan Gu , Xiachong Feng , Weitao Ma , Bo Li , Xiaocheng Feng

Privacy protection has become a top priority as the proliferation of AI techniques has led to widespread collection and misuse of personal data. Anonymization and visual identity information hiding are two important facial privacy…

Computer Vision and Pattern Recognition · Computer Science 2023-09-12 Xiao He , Mingrui Zhu , Dongxin Chen , Nannan Wang , Xinbo Gao

In the recent past, different researchers have proposed privacy-enhancing face recognition systems designed to conceal soft-biometric attributes at feature level. These works have reported impressive results, but generally did not consider…

Computer Vision and Pattern Recognition · Computer Science 2022-05-18 Dailé Osorio-Roig , Christian Rathgeb , Pawel Drozdowski , Philipp Terhörst , Vitomir Štruc , Christoph Busch