JPEG-resistant Adversarial Images

Several papers have explored the use of JPEG compression as a defense against adversarial images. In this work, we show that we can generate adversarial images which survive JPEG compression, by including a differentiable approximation to JPEG in the target model. By ensembling multiple target models employing varying levels of compression, we generate adversarial images with up to 691× greater success rate than the baseline method on a model using JPEG as defense.

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