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Unprecedented data collection and sharing have exacerbated privacy concerns and led to increasing interest in privacy-preserving tools that remove sensitive attributes from images while maintaining useful information for other tasks.…

Computer Vision and Pattern Recognition · Computer Science 2020-09-22 Kang Liu , Benjamin Tan , Siddharth Garg

Image matting aims to predict alpha values of elaborate uncertainty areas of natural images, like hairs, smoke, and spider web. However, existing methods perform poorly when faced with highly transparent foreground objects due to the large…

Computer Vision and Pattern Recognition · Computer Science 2023-03-14 Huanqia Cai , Fanglei Xue , Lele Xu , Lili Guo

The task of privacy-preserving face recognition (PPFR) currently faces two major unsolved challenges: (1) existing methods are typically effective only on specific face recognition models and struggle to generalize to black-box face…

Computer Vision and Pattern Recognition · Computer Science 2024-12-12 Yuanwei Liu , Chengyu Jia , Ruqi Xiao , Xuemai Jia , Hui Wei , Kui Jiang , Zheng Wang

Photos of faces uploaded online are vulnerable to malicious actors who can scrape facial images from online sources and intrude on personal privacy via unauthorized use of facial recognition models. This paper presents FaceCloak, a novel…

Computer Vision and Pattern Recognition · Computer Science 2026-05-20 Zachary Yahn , Fatih Ilhan , Tiansheng Huang , Selim Tekin , Sihao Hu , Yichang Xu , Margaret Loper , Ling Liu

Face recognition service has been used in many fields and brings much convenience to people. However, once the user's facial data is transmitted to a service provider, the user will lose control of his/her private data. In recent years,…

Cryptography and Security · Computer Science 2023-11-14 Yuwen Pu , Jiahao Chen , Jiayu Pan , Hao li , Diqun Yan , Xuhong Zhang , Shouling Ji

The widespread deployment of surveillance cameras for facial recognition gives rise to many privacy concerns. This study proposes a privacy-friendly alternative to large scale facial recognition. While there are multiple techniques to…

Computer Vision and Pattern Recognition · Computer Science 2021-01-28 Mattijs Baert , Sam Leroux , Pieter Simoens

Despite the recent upsurge of activity in image-based non-photorealistic rendering (NPR), and in particular portrait image stylisation, due to the advent of neural style transfer, the state of performance evaluation in this field is…

Computer Vision and Pattern Recognition · Computer Science 2020-09-03 Paul L. Rosin , Yu-Kun Lai , David Mould , Ran Yi , Itamar Berger , Lars Doyle , Seungyong Lee , Chuan Li , Yong-Jin Liu , Amir Semmo , Ariel Shamir , Minjung Son , Holger Winnemoller

The rapid advancement of diffusion models and personalization techniques has made it possible to recreate individual portraits from just a few publicly available images. While such capabilities empower various creative applications, they…

Computer Vision and Pattern Recognition · Computer Science 2026-05-29 Guanyu Wang , Kailong Wang , Yihao Huang , Mingyi Zhou , Geguang Pu , Li Li

In this paper, we present a comprehensive overview of the NTIRE 2026 3rd Restore Any Image Model (RAIM) challenge, with a specific focus on Track 3: AI Flash Portrait. Despite significant advancements in deep learning for image restoration,…

The use of social media websites and applications has become very popular and people share their photos on these networks. Automatic recognition and tagging of people's photos on these networks has raised privacy preservation issues and…

Computer Vision and Pattern Recognition · Computer Science 2022-01-11 Mohammad Hossein Khojaste , Nastaran Moradzadeh Farid , Ahmad Nickabadi

Reliable facial expression recognition plays a critical role in human-machine interactions. However, most of the facial expression analysis methodologies proposed to date pay little or no attention to the protection of a user's privacy. In…

Computer Vision and Pattern Recognition · Computer Science 2018-09-10 Jiawei Chen , Janusz Konrad , Prakash Ishwar

Generative techniques for image anonymization have great potential to generate datasets that protect the privacy of those depicted in the images, while achieving high data fidelity and utility. Existing methods have focused extensively on…

Computer Vision and Pattern Recognition · Computer Science 2024-03-25 Luca Piano , Pietro Basci , Fabrizio Lamberti , Lia Morra

Image registration is a key task in medical imaging applications, allowing to represent medical images in a common spatial reference frame. Current approaches to image registration are generally based on the assumption that the content of…

Computer Vision and Pattern Recognition · Computer Science 2024-04-17 Riccardo Taiello , Melek Önen , Francesco Capano , Olivier Humbert , Marco Lorenzi

Person re-identification is the problem of recognizing people across different images or videos with non-overlapping views. Although there has been much progress in person re-identification over the last decade, it remains a challenging…

Computer Vision and Pattern Recognition · Computer Science 2024-07-02 Yeong-Jun Cho , Kuk-Jin Yoon

As cameras become ubiquitous in our living environment, invasion of privacy is becoming a growing concern. A common approach to privacy preservation is to remove personally identifiable information from a captured image, but there is a risk…

Image and Video Processing · Electrical Eng. & Systems 2024-07-02 Yoko Sogabe , Shiori Sugimoto , Ayumi Matsumoto , Masaki Kitahara

Machine learning (ML) is increasingly being adopted in a wide variety of application domains. Usually, a well-performing ML model relies on a large volume of training data and high-powered computational resources. Such a need for and the…

Machine Learning · Computer Science 2021-09-23 Runhua Xu , Nathalie Baracaldo , James Joshi

Training computer-vision related algorithms on medical images for disease diagnosis or image segmentation is difficult in large part due to privacy concerns. For this reason, generative image models are highly sought after to facilitate…

Image and Video Processing · Electrical Eng. & Systems 2023-11-02 Robert V. Bergen , Jean-Francois Rajotte , Fereshteh Yousefirizi , Arman Rahmim , Raymond T. Ng

While convenient in daily life, face recognition technologies also raise privacy concerns for regular users on the social media since they could be used to analyze face images and videos, efficiently and surreptitiously without any security…

Computer Vision and Pattern Recognition · Computer Science 2022-05-25 Yaoyao Zhong , Weihong Deng

Privacy-preserving machine learning aims to train models on private data without leaking sensitive information. Differential privacy (DP) is considered the gold standard framework for privacy-preserving training, as it provides formal…

Recent advances in generative image editing have enabled transformative applications, from professional head shot generation to avatar stylization. However, these systems often require uploading high-fidelity facial images to third-party…

Cryptography and Security · Computer Science 2026-03-05 Dipesh Tamboli , Vineet Punyamoorty , Atharv Pawar , Vaneet Aggarwal