| Summary: | 博士 === 國立臺灣大學 === 資訊網路與多媒體研究所 === 107 === With the advances of head-mounted displays (HMD) for immersive virtual reality (VR), VR designers are able to produce VR application for many purposes such as education, virtual touring, games, etc. Although the users can perceive visual and auditory feedback with modern VR-HMD, the other human senses are missing when the user immersed in the virtual world. This leads the users to recognize that there is still a difference between the real world and the virtual world. To provide a better user experience, adding tactile sensation is a useful approach that can directly enhance the immersive experience, which is one of the human sense that influenced human perception. Additionally, with higher immersion, the VR application could have better performance. However, designing the haptics experience is not as easy as we think. Different tactile sensation needs several ways to reproduce. To recreate all of the tactile sensations in the virtual world is expensive and power consuming. Besides, we may not need all of it in an application. It is not only about the technical issue but also required to understand human perception, so we can minimize the cost and focus on the application needs. In this dissertation, we aim to enhance the immersive experience via haptic techniques. Those haptic techniques are potential and have different utilities for VR applications. By understanding the tactile sensations and human perception, we can develop a hybrid-haptics system for VR applications. We propose four kinds of potential techniques for enhancing the immersive experience, which contributes the design consideration, guidelines and prototype systems for the addressed hybrid-haptics system. With our haptic techniques, the users can perceive partial body and upper body experience simultaneously, and seamless interaction with a physical chair. Our research results and outcome not only benefit the hybrid-haptics system but also assist future designers and hapticans to design better immersive experience via haptic techniques.
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