arXiv Computer Vision

Dorsal Hand Images for Immersive (XR) and Privacy-preserving Age Assurance and Child Safety

arXiv AI
6d ago

AEGIS: Preserving Privacy of 3D Facial Avatars with Adversarial Perturbations

AEGIS is a privacy‑preserving framework that applies adversarial perturbations to the color coefficients of 3D Gaussian avatar primitives, protecting identity across all viewpoints and animations without altering geometry. It achieves near‑zero face retrieval and verification accuracy against black‑box recognizers while maintaining high perceptual realism and preserving attributes like age, gender, and emotion. The authors also introduce a viewpoint‑robust leakage metric to quantify residual identity leakage across rendered views.

By Dawid Wolkiewicz, Anastasiya Pechko, Przemys{\l}aw Spurek, Piotr Syga
arXiv Computer Vision
Oct 8

How Private is Private? A Comparative Study for Face De-Identification

The paper introduces a unified evaluation framework for face de-identification (FDeID), addressing inconsistencies in current protocols. It presents UtilFace, a demographically balanced benchmark assembled from four large-scale datasets, and HiFD, a hierarchical metric that simultaneously measures identity suppression, multi-level utility preservation, and image quality. Using this framework, the authors compare adversarial, GAN-based, and diffusion-based methods, revealing trade-offs and failure modes that were previously hidden, and they release the benchmark and toolkit for reproducible research.

By Hui Wei, Hao Yu, Hui Kuurila-Zhang, Guoying Zhao
arXiv Computer Vision
Oct 8

FaceKit: a Toolkit for Interpretable Facial Phenotyping, Synthetic Image Generation and Privacy Analysis in Rare Diseases

arXiv:2610.09288v1 Announce Type: cross Abstract: Many rare genetic diseases are associated with recognizable craniofacial features. However, traditional approaches for describing facial morphology r...

By Hongzhuo Chen, Zhanliang Wang, Florent Pollet, Mian Umair Ahsan, Joshua Bie, Tzung-Chien Hsieh, Peter Krawitz, Cong Liu, Wendy K Chung, Chunhua Weng, Gamze G\"ursoy, Kai Wang
arXiv AI
Oct 26

Guided Zero-Shot Anomaly Explanation for Anonymized Crowd Video Monitoring: Context, Categorization, and Spatial Localization

The paper introduces XAVAD, a unified approach for explainable anomaly detection in anonymized crowd video monitoring. It combines zero‑shot anonymization, anomaly type categorization, spatial localization, and scene context description using multimodal CLIP embeddings, LLM‑assisted prompting, and a prompt‑guided patching autofocus mechanism. Experiments on public CCTV datasets show XAVAD outperforms state‑of‑the‑art methods and offers insights into privacy‑explainability trade‑offs.

By Mulugeta Weldezgina Asres, Lei Jiao, Christian Walter Omlin
arXiv Machine Learning
Sep 7

Hidden In Plain Gaze: Gaze Representations as Privacy Controls for Utility and Re-identification Risk in XR

The paper investigates how different gaze data representations affect privacy and utility in extended reality (XR) systems. Three representations—raw gaze, spatial attention heatmaps, and engineered eye‑movement features—are compared using the HoloAssist dataset, evaluating action recognition accuracy and closed‑set user re‑identification. Engineered features preserve about 85% of action‑recognition performance while reducing re‑identification risk by roughly an order of magnitude, yet still leave some identity leakage, indicating that abstraction alone does not guarantee privacy.

By Cory Ilo, Brendan-David John, Doug A. Bowman