用视觉不可见的闪烁实现屏幕到手机的可靠通信
Revelio: A Real-World Screen-Camera Communication System with Visually Imperceptible Data Embedding
- 在OKLAB色彩空间中利用自适应闪烁和像素形状编码
- 可在噪声、异步等干扰下仍稳定解码，手机相机即能接收
- 适合电视互动等需隐形信息传输的场景
我们提出'Revelio'，一种基于OKLAB色彩空间中时间性闪烁融合原理的真实世界屏幕-相机通信系统。通过空间自适应闪烁与像素区域形状编码，实现视觉上不可察觉的数据嵌入，同时对屏幕-相机信道中的噪声、异步及畸变具有鲁棒性，确保标准智能手机相机可可靠解码。解码器采用两阶段神经网络，利用加权差分累加器精确检测帧并识别符号。初步实验表明，Revelio在互动电视场景中有效，提供了一种无感传递元信息的方法。
原文摘要 · Abstract (English)
We present `Revelio', a real-world screen-camera communication system leveraging temporal flicker fusion in the OKLAB color space. Using spatially-adaptive flickering and encoding information in pixel region shapes, Revelio achieves visually imperceptible data embedding while remaining robust against noise, asynchronicity, and distortions in screen-camera channels, ensuring reliable decoding by standard smartphone cameras. The decoder, driven by a two-stage neural network, uses a weighted differential accumulator for precise frame detection and symbol recognition. Initial experiments demonstrate Revelio's effectiveness in interactive television, offering an unobtrusive method for meta-information transmission.
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