用事件相机实现抗运动干扰的高速光通信
Motion-Aware Optical Camera Communication with Event Cameras
- 采用事件相机与动态视觉标记，实现快速定位与数据传输
- 静态下最高达114 Kbps，运动中定位精度1厘米、误码率1%
- 适合移动设备在晃动中稳定接收光信号
随着智能移动设备普及，基于可见光的光学摄像通信系统因其高效与隐私保护特性受到关注。该系统利用光学摄像头通过屏幕发光接收数据。然而，屏幕刷新和快速相机运动等动态因素限制了性能。传统CMOS相机受限于低帧率和运动模糊，影响整体表现。本文提出一种新型系统，采用事件相机，设计动态视觉标记与事件驱动跟踪算法，有效缓解屏幕刷新与相机运动带来的问题。实验表明，在静态条件下可实现高达114 Kbps的传输速率；在不同相机运动场景下，定位精度达1厘米，比特误码率仅为1%。
原文摘要 · Abstract (English)
As the ubiquity of smart mobile devices continues to rise, Optical Camera Communication systems have gained more attention as a solution for efficient and private data streaming. This system utilizes optical cameras to receive data from digital screens via visible light. Despite their promise, most of them are hindered by dynamic factors such as screen refreshing and rapid camera motion. CMOS cameras, often serving as the receivers, suffer from limited frame rates and motion-induced image blur, which degrade overall performance. To address these challenges, this paper unveils a novel system that utilizes event cameras. We introduce a dynamic visual marker and design event-based tracking algorithms to achieve fast localization and data streaming. Remarkably, the event camera's unique capabilities mitigate issues related to screen refresh rates and camera motion, enabling a high throughput of up to 114 Kbps in static conditions, and a 1 cm localization accuracy with 1% bit error rate under various camera motions.
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