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Recently, there has been an increasing concern about the privacy issue raised by using personally identifiable information in machine learning. However, previous portrait matting methods were all based on identifiable portrait images. To…

Computer Vision and Pattern Recognition · Computer Science 2021-07-30 Jizhizi Li , Sihan Ma , Jing Zhang , Dacheng Tao

In this paper, we propose a privacy-preserving image classification method using encrypted images under the use of the ConvMixer structure. Block-wise scrambled images, which are robust enough against various attacks, have been used for…

Computer Vision and Pattern Recognition · Computer Science 2022-08-05 Zheng Qi , AprilPyone MaungMaung , Hitoshi Kiya

The use of AI in public spaces continually raises concerns about privacy and the protection of sensitive data. An example is the deployment of detection and recognition methods on humans, where images are provided by surveillance cameras.…

Computer Vision and Pattern Recognition · Computer Science 2026-01-08 Christoph Liebender , Ranulfo Bezerra , Kazunori Ohno , Satoshi Tadokoro

The shutter strategy applied to the photo-shooting process has a significant influence on the quality of the captured photograph. An improper shutter may lead to a blurry image, video discontinuity, or rolling shutter artifact. Existing…

Computer Vision and Pattern Recognition · Computer Science 2023-05-24 Xinyu Zhang , Hefei Huang , Xu Jia , Dong Wang , Huchuan Lu

We study the 3D-aware image attribute editing problem in this paper, which has wide applications in practice. Recent methods solved the problem by training a shared encoder to map images into a 3D generator's latent space or by per-image…

Computer Vision and Pattern Recognition · Computer Science 2023-04-21 Jianhui Li , Jianmin Li , Haoji Zhang , Shilong Liu , Zhengyi Wang , Zihao Xiao , Kaiwen Zheng , Jun Zhu

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

Next-generation systems aim to increase both the speed and responsiveness of wireless communications, while supporting compelling applications such as edge and cloud computing, remote-Health, vehicle-to-infrastructure communications, etc.…

Signal Processing · Electrical Eng. & Systems 2021-09-21 Zhongxiang Wei , Christos Masouros , H. Vincent Poor , Athina P. Petropulu , Lajos Hanzo

An important aspect of crowd monitoring is knowing how many people we are dealing with. Sometimes, knowing the size of a crowd in a single location and at a specific moment is enough. Matters become problematic when counting the same people…

Cryptography and Security · Computer Science 2026-04-17 Fatemeh Marzani , Thijs van Ede , Geert Heijenk , Maarten van Steen

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

Personalized text-to-image models allow users to generate images of new concepts from several reference photos, thereby leading to critical concerns regarding civil privacy. Although several anti-personalization techniques have been…

Computer Vision and Pattern Recognition · Computer Science 2025-02-13 Qianrui Teng , Xing Cui , Xuannan Liu , Peipei Li , Zekun Li , Huaibo Huang , Ran He

Local Differential Privacy (LDP) is the gold standard trust model for privacy-preserving machine learning by guaranteeing privacy at the data source. However, its application to image data has long been considered impractical due to the…

Computer Vision and Pattern Recognition · Computer Science 2026-05-27 Yuanming Cao , Chengqi Li , Wenbo He

The rapid advancement of technology has resulted in advanced camera capabilities coming to smaller form factors with improved energy efficiency. These improvements have led to more efficient and capable cameras on mobile devices like mobile…

Computers and Society · Computer Science 2022-05-09 Sreejith Gopinath , Aspen Olmsted

Recently, there has been an increasing concern about the privacy issue raised by identifiable information in machine learning. However, previous portrait matting methods were all based on identifiable images. To fill the gap, we present…

Computer Vision and Pattern Recognition · Computer Science 2023-04-18 Sihan Ma , Jizhizi Li , Jing Zhang , He Zhang , Dacheng Tao

Privacy protection is a growing concern in the digital era, with machine vision techniques widely used throughout public and private settings. Existing methods address this growing problem by, e.g., encrypting camera images or…

Recent Customized Portrait Generation (CPG) methods, taking a facial image and a textual prompt as inputs, have attracted substantial attention. Although these methods generate high-fidelity portraits, they fail to prevent the generated…

Computer Vision and Pattern Recognition · Computer Science 2025-03-12 Junying Wang , Hongyuan Zhang , Yuan Yuan

Image data collected in the wild often contains private information such as faces and license plates, and responsible data release must ensure that this information stays hidden. At the same time, released data should retain its usefulness…

Machine Learning · Computer Science 2025-12-19 Saeed Mahloujifar , Narine Kokhlikyan , Chuan Guo , Kamalika Chaudhuri

The emerging public awareness and government regulations of data privacy motivate new paradigms of collecting and analyzing data that are transparent and acceptable to data owners. We present a new concept of privacy and corresponding data…

Cryptography and Security · Computer Science 2022-06-08 Jie Ding , Bangjun Ding

Multi-modal retrieval-augmented generation (MRAG) systems retrieve visual evidence from large image corpora to ground the responses of large multi-modal models, yet the retrieved images frequently contain human faces whose identities…

Computer Vision and Pattern Recognition · Computer Science 2026-04-28 Zehua Cheng , Wei Dai , Jiahao Sun

A new approach for signature region of interest pre-processing was presented. It used new auto cropping preparation on the basis of the image content, where the intensity value of pixel is the source of cropping. This approach provides both…

Computer Vision and Pattern Recognition · Computer Science 2010-04-22 Bassam Al-Mahadeen , Mokhled S. AlTarawneh , Islam H. AlTarawneh

In intelligent building management, knowing the number of people and their location in a room are important for better control of its illumination, ventilation, and heating with reduced costs and improved comfort. This is typically achieved…

Computer Vision and Pattern Recognition · Computer Science 2022-09-26 Thomas Dubail , Fidel Alejandro Guerrero Peña , Heitor Rapela Medeiros , Masih Aminbeidokhti , Eric Granger , Marco Pedersoli