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arXiv 1707.09376cs.CVcs.AIcs.LG
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基于生成式深度神经网络的人脸去识别

Face Deidentification with Generative Deep Neural Networks

Faculty of Computer and Information Science, University of Ljubljana(卢布尔雅那大学计算机与信息科学学院);Department of Computer Engineering, Istanbul Technical University(伊斯坦布尔技术大学计算机工程系);Faculty of Electrical Engineering, University of Ljubljana(卢布尔雅那大学电气工程学院)

Blaž Meden, Refik Can Mallı, Sebastjan Fabijan, Hazım Kemal Ekenel, Vitomir Štruc, Peter Peer

摘要:

人脸去识别是隐私和安全研究人员的一个活跃话题。早期的去身份化方法依赖于图像模糊或像素化,近年来被基于正式匿名模型的技术所取代,这些技术提供隐私保护,同时旨在即使在去身份化之后也保留数据的某些特征。后一个方面特别重要,因为它允许在身份信息不相关的应用程序中利用去识别数据。在这项工作中,我们提出了一种新的人脸去识别流水线,它确保匿名合成人工代理面孔使用生成神经网络(GNNs)。所生成的面部用于对图像或视频中的主体进行去识别,同时保留数据的非身份相关方面,从而实现数据利用。由于生成网络是非常自适应的,并且可以利用不同的参数集(与生成的输出在面部表情、性别、种族等方面的外观有关),它们代表了面部去识别化问题的自然选择。为了证明我们的方法的可行性,我们使用自动识别工具和人类注释器进行实验。我们的研究结果表明,去识别图像的识别性能接近机会,这表明基于GNNs的去识别过程是非常有效的。

英文摘要:

Face deidentification is an active topic amongst privacy and security researchers. Early deidentification methods relying on image blurring or pixelization were replaced in recent years with techniques based on formal anonymity models that provide privacy guaranties and at the same time aim at retaining certain characteristics of the data even after deidentification. The latter aspect is particularly important, as it allows to exploit the deidentified data in applications for which identity information is irrelevant. In this work we present a novel face deidentification pipeline, which ensures anonymity by synthesizing artificial surrogate faces using generative neural networks (GNNs). The generated faces are used to deidentify subjects in images or video, while preserving non-identity-related aspects of the data and consequently enabling data utilization. Since generative networks are very adaptive and can utilize a diverse set of parameters (pertaining to the appearance of the generated output in terms of facial expressions, gender, race, etc.), they represent a natural choice for the problem of face deidentification. To demonstrate the feasibility of our approach, we perform experiments using automated recognition tools and human annotators. Our results show that the recognition performance on deidentified images is close to chance, suggesting that the deidentification process based on GNNs is highly effective.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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