论文标题

防御多个和不可预见的对抗视频

Defending Against Multiple and Unforeseen Adversarial Videos

论文作者

Lo, Shao-Yuan, Patel, Vishal M.

论文摘要

深度神经网络的对抗性鲁棒性已积极研究。但是,大多数现有的防御方法仅限于特定类型的对抗扰动。具体来说,他们通常无法同时提供对多种攻击类型的抵抗力,即他们缺乏多种扰动的鲁棒性。此外,与图像识别问题相比,视频识别模型的对抗性鲁棒性相对尚未探索。尽管有几项研究提出了如何生成对抗性视频,但文献中仅发表了一些有关防御策略的方法。在本文中,我们提出了针对多种类型的对抗视频的最早防御策略之一,以供视频识别。所提出的方法(称为Multibn)使用具有基于学习的BN选择模块的多个独立批归归归量表(BN)层对多个对抗视频类型进行对抗训练。使用多个BN结构,每个BN BRACH负责学习单个扰动类型的分布,因此提供了更精确的分布估计。这种机制受益于处理多种扰动类型。 BN选择模块检测输入视频的攻击类型,并将其发送到相应的BN分支,使Multibn完全自动化并允许端到端培训。与当前的对抗训练方法相比,提议的多重击中对不同甚至不可预见的对抗视频类型表现出更强的多扰动鲁棒性鲁棒性鲁棒性,包括LP结合的攻击和可实现的攻击。这在不同的数据集和目标模型上是正确的。此外,我们进行了广泛的分析,以研究多BN结构的性质。

Adversarial robustness of deep neural networks has been actively investigated. However, most existing defense approaches are limited to a specific type of adversarial perturbations. Specifically, they often fail to offer resistance to multiple attack types simultaneously, i.e., they lack multi-perturbation robustness. Furthermore, compared to image recognition problems, the adversarial robustness of video recognition models is relatively unexplored. While several studies have proposed how to generate adversarial videos, only a handful of approaches about defense strategies have been published in the literature. In this paper, we propose one of the first defense strategies against multiple types of adversarial videos for video recognition. The proposed method, referred to as MultiBN, performs adversarial training on multiple adversarial video types using multiple independent batch normalization (BN) layers with a learning-based BN selection module. With a multiple BN structure, each BN brach is responsible for learning the distribution of a single perturbation type and thus provides more precise distribution estimations. This mechanism benefits dealing with multiple perturbation types. The BN selection module detects the attack type of an input video and sends it to the corresponding BN branch, making MultiBN fully automatic and allowing end-to-end training. Compared to present adversarial training approaches, the proposed MultiBN exhibits stronger multi-perturbation robustness against different and even unforeseen adversarial video types, ranging from Lp-bounded attacks and physically realizable attacks. This holds true on different datasets and target models. Moreover, we conduct an extensive analysis to study the properties of the multiple BN structure.

扫码加入交流群

加入微信交流群

微信交流群二维码

扫码加入学术交流群,获取更多资源