Imperceptible Color Vibration for Embedding Pixel-by-Pixel Data into LCD Images

Abstract

In addition to displaying images, graphic display devices can be configured to transmit information to nearby computing devices, to facilitate human interaction with the image. However, some existing methods require the use of visible markers, which impairs the visual experience, while others require specially modified projectors.. To solve these problems, we propose a novel method that employs imperceptible color vibration to embed pixel-by-pixel data into images on an ordinary LCD display; this is achieved by fixing the luminance and vibrating only the chromaticity of the color of each pixel. We show that five different data values can be embedded and detected with adequate responsiveness for human-computer interaction (HCI). It is expected that our method will be applied to wearable tactile displays, robot controls, and other similar technologies.