Skilled jugglers can freely vary the rotation of their rings — spinning them fast or slow at will. This control over rotation has the potential to enrich performance expression, but because the spinning is difficult for audiences to perceive, it has rarely been exploited as a visual element. In this research, we propose a method that uses infrared LEDs and a high-speed camera to estimate the rotation direction and speed of juggling rings in real time, and visualizes this information through video effects. The infrared LEDs attached to each ring are wirelessly controlled to light up sequentially, ring by ring. By capturing this with a high-speed camera, the system can track multiple rings simultaneously while distinguishing each one individually.

We investigated how different presentation methods and timings affect players’ gaze behavior in game tutorials. Results suggest that presentation “timing” has a greater impact on attention allocation than presentation “intensity”.

We propose a method to enhance the realism of aerial images by applying shading that reflects the real optical environment to an aerial stereoscopic display that presents 3D CG in mid-air using AIRR and a stereoscopic display.

Developed an assistive technique that imperceptibly supports player operations and experimentally evaluated its effectiveness and imperceptibility.

We propose a novel attack method that exploits high refresh rate displays to deliver disguised QR codes. By rapidly alternating between two QR codes at 120Hz or higher, the display appears as a single code to the human eye, while a camera scanning it will probabilistically read one of the two versions.

Research investigating delay measurement in computer input/output environments and the impact of delays that should be considered when designing experimental systems, aiming to improve the accuracy of HCI research and cognitive science experiments.

We developed a method to display aerial images with a pseudo sense of depth for stage performances using AIRR and DFD technologies. This creates the illusion that images are moving from the back of the stage toward the front.

We proposed and evaluated a system that aims to reduce VR sickness by using rhythmic head movements as walking input in a VR environment with a head-mounted display.

A system that displays parallel timelines for each region in digital illustration timelapse videos, supporting efficient understanding of the drawing process.