TY  - EJOU
AU  - Huang, Ling 
AU  - Zhang, Hao 
AU  - Mo, Jiwei 
AU  - Liu, Yuehong 
AU  - Lu, Qiu 
AU  - Li, Shuiwang 

TI  - Identity-Hiding Visual Perception: Progress, Challenges, and Future Directions
T2  - Journal of Information Hiding and Privacy Protection

PY  - 2025
VL  - 7
IS  - 1
SN  - 2637-4226

AB  - Rapid advances in computer vision have enabled powerful visual perception systems in areas such as surveillance, autonomous driving, healthcare, and augmented reality. However, these systems often raise serious privacy concerns due to their ability to identify and track individuals without consent. This paper explores the emerging field of identity-hiding visual perception, which aims to protect personal identity within visual data through techniques such as anonymization, obfuscation, and privacy-aware modeling. We provide a system-level overview of current technologies, categorize application scenarios, and analyze major challenges—particularly the trade-off between privacy and utility, technical complexity, and ethical risks. Furthermore, we examine regulatory trends and propose future research directions, including model-level privacy mechanisms such as federated learning and machine unlearning. By synthesizing insights across technical, ethical, and policy dimensions, this work offers a conceptual roadmap for developing responsible, privacy-preserving visual perception systems.
KW  - Identity-hiding; visual perception; privacy protection

DO  - 10.32604/jihpp.2025.066524