In this paper, we propose a novel physical stealth attack against the person detectors in real world. The proposed method generates an adversarial patch, and prints it on real clothes to make a three dimensional (3D) invisible cloak. Anyone wearing the cloak can evade the detection of person detectors and achieve stealth. We consider the impacts of those 3D physical constraints (i.e., radian, wrinkle, occlusion, angle, etc.) on person stealth attacks, and propose 3D transformations to generate 3D invisible cloak. We launch the person stealth attacks in 3D physical space instead of 2D plane by printing the adversarial patches on real clothes under challenging and complex 3D physical scenarios. The conventional and 3D transformations are performed on the patch during its optimization process. Further, we study how to generate the optimal 3D invisible cloak. Specifically, we explore how to choose input images with specific shapes and colors to generate the optimal 3D invisible cloak. Besides, after successfully making the object detector misjudge the person as other objects, we explore how to make a person completely disappeared, i.e., the person will not be detected as any objects. Finally, we present a systematic evaluation framework to methodically evaluate the performance of the proposed attack in digital domain and physical world. Experimental results in various indoor and outdoor physical scenarios show that, the proposed person stealth attack method is robust and effective even under those complex and challenging physical conditions, such as the cloak is wrinkled, obscured, curved, and from different angles. The attack success rate in digital domain (Inria data set) is 86.56%, while the static and dynamic stealth attack performance in physical world is 100% and 77%, respectively, which are significantly better than existing works.
翻译:在本文中, 我们提议对真实世界中的人探测器进行新型的物理隐形攻击。 提议的方法产生一个对抗性补丁, 并将它印在真实衣服上, 以制作一个三维( 3D) 隐形斗篷。 穿戴斗篷的任何人都可以逃避探测人探测器, 并实现隐形。 我们考虑3D的物理限制( 即, 亮度、 皱纹、 隐形、 角度等) 对人隐形攻击的影响, 并提议3D变换3D 隐形斗篷。 我们提议的方法是在3D 物理空间中进行隐形攻击, 3D 而不是 2D 平面, 在3D 3D 的物理情景下打印实装补丁。 任何穿戴斗篷的常规和 3D 变形都可以回避 。 具体地说, 我们探索如何选择带有特定形状和颜色的输入图像来生成最佳的 3D 隐形斗篷。 此外, 在成功地使物体探测器误判人成为其他物体之后, 我们探索如何让一个人完全消失, 。 (efreal) rial rial rial action action action action) (e)