Accelerated and Optimized Search of Imperceptible Color Vibration for Embedding Information into LCD images
Shingo Hattori, Takefumi Hiraki

TL;DR
This paper introduces an accelerated search method for imperceptible color vibrations to embed information into LCD images, enabling communication without affecting visual content, by optimizing and parallelizing the search process.
Contribution
It proposes a parallelized and optimized search algorithm for imperceptible color vibration pairs, improving efficiency over previous serial methods.
Findings
The optimized search significantly reduces processing time.
The method can embed substantial information into images without perceptible distortion.
Applicability demonstrated on nine color images.
Abstract
Large, high-resolution displays are installed throughout the city as public displays. By superimposing invisible information on the images of these displays, large numbers of devices with cameras and sensors can communicate with the displays without prior pairing. Several applications have been proposed, such as operating robots or communicating information to users by displaying 2D codes on images. However, the display of 2D codes has the problem of compromising the appearance of displayed content. Abe et al. proposed a method of communicating with devices by superimposing invisible information using color vibration on images displayed on off-the-shelf liquid-crystal displays (LCD). Using this method, we can embed the information for devices in images without interfering with the displayed content. Abe et al. uses a simple serial loop operation to search for color pairs comprising a…
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