Bit-ViP:利用位平面通过混淆保护图像视觉隐私 / Bit-ViP: Leveraging Bit-planes to Preserve Visual Privacy in Images through Obfuscation
1️⃣ 一句话总结
本文提出了一种名为Bit-ViP的图像混淆方法,通过将图像分解为位平面并加入不可逆噪声,在保护视觉隐私的同时保留图像对识别任务的可用性,能有效防御恶意重建攻击。
The unprecedented growth of computer vision applications, such as surveillance systems and social media, raises security and visual privacy concerns, especially when data is stored on cloud servers. Image obfuscation offers a way to preserve visual privacy while maintaining an adequate level of usability; thus, it has been a topic of great interest in recent years. However, prior obfuscation schemes are either vulnerable to malicious attacks, such as model inversion to reconstruct original images from obfuscated images, or generate non-trainable obfuscated images, making them unusable for achieving reasonable accuracy. This paper proposes a novel bit-plane-based image obfuscation scheme, {\em Bit-ViP}, to preserve visual privacy for image-based recognition tasks. The Bit-ViP scheme produces secure, usable images by incorporating an innovative end-to-end obfuscation function. While doing so, the obfuscated image would contain non-invertible noise (generated by Lorenz's chaotic system and differential privacy), making it hard for an adversary to reconstruct the original image. We conduct extensive experiments on two popular activity recognition datasets, namely UCF101 and HMDB51, to validate the effectiveness of Bit-ViP. In the face of attacks on reconstruction, pixel frequency, information entropy, and pixel inter-correlation, we present a rigorous security analysis demonstrating tangible improvements over existing schemes.
Bit-ViP:利用位平面通过混淆保护图像视觉隐私 / Bit-ViP: Leveraging Bit-planes to Preserve Visual Privacy in Images through Obfuscation
本文提出了一种名为Bit-ViP的图像混淆方法,通过将图像分解为位平面并加入不可逆噪声,在保护视觉隐私的同时保留图像对识别任务的可用性,能有效防御恶意重建攻击。
源自 arXiv: 2606.29417