設計三自由度旋轉觸覺提示以改進第一人稱視角體驗

Abstract

「第一人稱視角（FPV）無人機」是最近發展起來的無人機種類，能夠進行精確地飛行並且捕捉以往難以捕捉的精采視覺體驗，例如穿越狹窄的室內空間和極近的接觸表面上飛行。FPV 視覺體驗雖然令人興奮，但通常會有頻繁的旋轉，可能導致受試者有不適感。因此，我們提出了「TurnAhead」，它使用對應鏡頭旋轉的 3 自由度（3-DoF）旋轉觸覺提示，以提高 FPV 體驗的舒適度、沉浸感和有趣度。它使用頭戴式附載空氣噴射裝置提供旋轉力回饋，是首個支持所有旋轉軸（偏航、俯仰和翻滾）旋轉的設備。我們進行了一系列的感知和形成性研究，探索觸覺提示的時間點和強度的設計，隨後進行了用戶體驗評估，共有 44 名參與者（四個實驗分別為 12, 8, 6, 18 人）。結果顯示，「TurnAhead」顯著改善了整體舒適度、沉浸感和有趣度，並且有89％的受試者偏好使用它。

First-Person View (FPV) drone is a recently developed category of drones designed for precision flying and for capturing exhilarating experiences that could not be captured before, such as navigating through tight indoor spaces and flying extremely close to subjects of interest. FPV viewing experiences, while exhilarating, typically have frequent rotations that can lead to visually induced discomfort. We present TurnAhead, which uses 3-DoF rotational haptic cues that correspond to camera rotations to improve the comfort, immersion, and enjoyment of FPV experiences. It uses headset-mounted air jets to provide ungrounded rotational forces and is the first device to support rotation around all 3 axes: yaw, pitch, and roll. We conducted a series of perception and formative studies to explore the design space of timing and intensity of haptic cues, followed by user experience evaluation, for a combined total of 44 participants (n=12, 8, 6, 18). Results showed that TurnAhead significantly improved overall comfort, immersion, and enjoyment, and was preferred by 89% of participants.