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Chameleon Personalized Privacy Protection Mask
Chameleon creates invisible digital masks for personal photographs; once applied, the pictures are resistant to unwanted facial recognition.
(Personalized Privacy Protection Mask Against Unauthorized Facial Recognition)
Face recognition (FR) can be abused for privacy intrusion. Governments, private companies, or even individual attackers can collect facial images by web scraping to build an FR system identifying human faces without their consent.
This paper introduces Chameleon, which learns to generate a user-centric personalized privacy protection mask, coined as P3-Mask, to protect facial images against unauthorized FR with three salient features.
First, we use a cross-image optimization to generate one P3-Mask for each user instead of tailoring facial perturbation for each facial image of a user. It enables efficient and instant protection even for users with limited computing resources.
Second, we incorporate a perceptibility optimization to preserve the visual quality of the protected facial images.
Third, we strengthen the robustness of P3-Mask against unknown FR models by integrating focal diversity-optimized ensemble learning into the mask generation process. Extensive experiments on two benchmark datasets show that Chameleon outperforms three state-of-the-art methods with instant protection and minimal degradation of image quality.
Furthermore, Chameleon enables cost-effective FR authorization using the P3-Mask as a personalized de-obfuscation key, and it demonstrates high resilience against adaptive adversaries.
In his recent 2019 novel Fall; or, Dodge in Hell: A Novel, Neal Stephenson describes a live method for doing the same thing IRL with a VEIL:
...three high school-aged girls, coffee cups in hand, gaily laughing and talking.They all had wearables with large, reflective lenses, and so their eyes could not be seen. From the cheekbones down, their faces were exposed. But points and patches of light, projected by lasers in the lower rims of the glasses, were flashing and sliding all over their faces in a programmed manner that had been designed to foil facial recognition systems.
Zula wasn't wearing a VEIL...
...the Virtual Epiphantic Identity Lustre.
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