情報処理学会 インタラクション2026

Wearable projection systems enable hands-free remote instruction without the fatigue associated with head-mounted displays (HMDs). However, ensuring projection stability during worker movement is a critical challenge for practical deployment. In this study, we propose a wearable projection system integrated with a gimbal to physically dampen body vibrations. The system aims to maintain high spatial consistency for projected visual guidance. We conducted a quantitative evaluation to analyze the relationship between worker motion dynamics (linear/angular velocity) and the positional stability of the projected content. During the evaluation, we observed that high-frequency angular motion often triggers synchronization artifacts (ghosting) between the camera and the laser projector, leading to identification mark failures in non-stabilized setups. The proposed mechanical damping was found to be effective in mitigating these artifacts. Experimental results demonstrate that the gimbal-stabilized system significantly reduces positional jitter and improves tracking reliability compared to a non-stabilized baseline. This work provides a feasibility study and hardware analysis for robust HMD-free remote guidance.