Accelerated and Optimized Search of Imperceptible Color Vibration for Embedding Information into LCD images

Figure 1: (a): Concept of information embedding on images using imperceptible color vibration. Devices can detect areas that appear gray to humans as switching between red and blue and acquire information on the presence of this switching to perform various actions. (b): Overview of a search method of imperceptible color vibration. Color pairs are chosen in a L*a*b* color space with fixed luminance (L*), and the difference in RGB values between color pairs determines the presence of color vibration.