Just Noticeable Difference for Machines to Generate Adversarial Images

• URL: http://arxiv.org/abs/2001.11064v1
• Date: Wed, 29 Jan 2020 19:42:35 GMT
• Title: Just Noticeable Difference for Machines to Generate Adversarial Images
• Authors: Adil Kaan Akan, Mehmet Ali Genc, Fatos T. Yarman Vural
• Abstract summary: The proposed method is based on a popular concept of experimental psychology called, Just Noticeable Difference. The adversarial images generated in this study looks more natural compared to the output of state of the art adversarial image generators.
• Score: 0.34376560669160383
• License: http://creativecommons.org/licenses/by-nc-sa/4.0/
• Abstract: One way of designing a robust machine learning algorithm is to generate authentic adversarial images which can trick the algorithms as much as possible. In this study, we propose a new method to generate adversarial images which are very similar to true images, yet, these images are discriminated from the original ones and are assigned into another category by the model. The proposed method is based on a popular concept of experimental psychology, called, Just Noticeable Difference. We define Just Noticeable Difference for a machine learning model and generate a least perceptible difference for adversarial images which can trick a model. The suggested model iteratively distorts a true image by gradient descent method until the machine learning algorithm outputs a false label. Deep Neural Networks are trained for object detection and classification tasks. The cost function includes regularization terms to generate just noticeably different adversarial images which can be detected by the model. The adversarial images generated in this study looks more natural compared to the output of state of the art adversarial image generators.

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