Hand-based interaction, such as using a handheld controller or making hand gestures, has been widely adopted as the primary method for interacting with both virtual reality (VR) and augmented reality (AR) head-mounted displays (HMDs). In contrast, hands-free interaction avoids the need for users' hands and although it can afford additional benefits, there has been limited research in exploring and evaluating hands-free techniques for these HMDs. As VR HMDs become ubiquitous, people will need to do text editing, which requires selecting text segments. Similar to hands-free interaction, text selection is underexplored. This research focuses on both, text selection via hands-free interaction. Our exploration involves a user study with 24 participants to investigate the performance, user experience, and workload of three hands-free selection mechanisms (Dwell, Blink, Voice) to complement head-based pointing. Results indicate that Blink outperforms Dwell and Voice in completion time. Users' subjective feedback also shows that Blink is the preferred technique for text selection. This work is the first to explore hands-free interaction for text selection in VR HMDs. Our results provide a solid platform for further research in this important area.
翻译:使用手持控制器或手势等手动互动已被广泛采用,作为与虚拟现实(VR)互动的主要方法,并扩大了现实(AR)头部显示器(HMD),作为与虚拟现实(VR)互动的主要方法。相比之下,无手式互动避免了用户手的必要性,虽然它能够带来额外的好处,但在探索和评价这些HMD的无手技术方面研究有限。随着VR HMD变得无处不在,人们需要进行文本编辑,这需要选择文本部分。与无手互动相似,文本选择没有得到充分探讨。这一研究侧重于两者,即通过手无手互动选择文本。我们的探索涉及与24个参与者进行用户研究,以调查三个无手选择机制(Dwell、Blink、Voice)的性能、用户经验和工作量,以补充头部的指针。结果显示,Blink在完成时,需要将Dwell和VWMD进行文字编辑。用户的主观反馈还表明,Blink是选择文本的首选技术。我们首先在SUR HMD的这一重要研究领域探索无手互动。