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Updated: May 23, 2025

Virtual Reality Experiments with Physiological Measures

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AirtypeLogger:虚拟空间中的短键盘按键如何将您的语义输入暴露在附近的摄像头上

Tongyu Zhang, Yiran Shen, Ning Chen

IEEE transactions on visualization and computer graphics

|March 10, 2025

概括

AirtypeLogger允许基于视频的实用攻击扩展现实 (XR) 用户的空气类型活动. 这种新的方法实现了高精度按键推断,观察到的打字事件最小,增强了隐私泄露的担忧.

科学领域:

计算机科学计算机科学
人与计算机的交互
网络安全网络安全

背景情况:

扩展现实 (XR) 设备可以实现沉浸式的虚拟体验.
空气类型,XR中常见的输入方法,存在隐私风险.
分析空气类型的现有方法缺乏效率和实用性.

研究的目的:

提出AirtypeLogger,一种基于视频的新方法来攻击XR中的空气打字.
从视频流中开发一种检测和定位空气类型事件的方法.
为了提高从最小的空气类型数据推断类型内容的精度.

主要方法:

AirtypeLogger在视频中检测和定位空气类型事件.
一个时空表征编码键盘按键位置和顺序.
一个基于变压器的网络处理这些编码以实现高精度的推断.

主要成果:

AirtypeLogger实现了一个字符错误率 (CER) 低于0.1.
只有7个观察到的空气类型事件,就有可能进行有效的推断.
这超越了以前需要广泛的打字观察的方法.

结论:

AirtypeLogger为基于视频的空气类型攻击提供了一种实用和高效的方法.
这种方法显著提高了对XR空气类型的隐私风险的理解.
对XR的强大隐私保护方法进行进一步的研究是有必要的.

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Depth Perception and Spatial Vision

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Depth perception is the ability to perceive objects three-dimensionally. It relies on two types of cues: binocular and monocular. Binocular cues depend on the combination of images from both eyes and how the eyes work together. Since the eyes are in slightly different positions, each eye captures a slightly different image. This disparity between images, known as binocular disparity, helps the brain interpret depth. When the brain compares these images, it determines the distance to an object.