Anti-camera LED Lighting

This work is concerned with the protection of intellectual property rights and privacy against unpermitted uses of digital cameras. A technique of multispectral coded illumination (MSCI) with LED lights is proposed to defeat cameras capturing indoor scenes by inducing annoying color artifacts into the acquired images or video frames. The main idea of MSCI is to temporally modulate LED lights of different colors at certain frequencies so that they interfere with the rolling shutter of the camera, but at the same time the coded illumination appears to human eyes the same as steady white lighting.