VR環境におけるハンドトラッキングを利用したフリック文字入力インタフェースの改良

抄録

Recently, Virtual Reality (VR) technology is becoming widespread. In particular, techniques of hand tracking has enabled us to reflect movements of fingers in the real space upon the VR environments without wearing any special devices. Along with that, methods for freehand text input, especially flick input which is widely used in mobile devices, has been studied. However, the flick input in VR environments has a problem of poor input accuracy. In this study, we propose a method for improving the flick input interface using hand tracking in input accuracy and operability. Since one of the previous studies suggests that some users occasionally fail to notice the visual feedback, we introduce three types of feedback, namely visual, auditory and tactile feedback, to the system so that the user can easily notice it. Furthermore, we focus on the fact that failure of hand tracking often make input accuracy and operability worse, and propose a novel key layout suitable for flick input in VR environments that prevents the failure of hand tracking. Experimental results show that three types of feedback introduced in this study improve subjective evaluation of the user, and the proposed layout is effective in improving both input accuracy and subjective evaluation of the user.