林均翰Lin, Chun-Han魏識恩Wei, Shih-En2023-12-082028-05-092023-12-082023https://etds.lib.ntnu.edu.tw/thesis/detail/df34e1100cbba202a542de0f5254f4da/http://rportal.lib.ntnu.edu.tw/handle/20.500.12235/121583近年來行動裝置中高效能處理器的進步與相機品質的提升，帶動著擴增實境產業的迅速發展，使用者不需付出高昂的成本即可人手一機享受擴增實境帶來的娛樂。然而，擴增實境應用程式所需的電量消耗在過去的研究顯示，遠高出一般非擴增實境應用程式許多，這歸因於圖形處理器與相機的大量使用。本研究提出一個針對行動裝置擴增實境程式的省電方案，藉由減少虛擬物件渲染幀率及螢幕刷新率與亮度的調整，達成節能的目標。本設計透過監聽低功耗的陀螺儀與加速度計慣性測量元件，分辨使用者目前的行為狀態與計算行動裝置的平移速度，藉此提供合適的節能方案。這些方案可能是降低物件渲染幀率來減少程式的運算量或是螢幕刷新率與亮度的調整，最後本研究在行動裝置Google Pixel 4 XL上實作該設計，評估其狀態辨識準確率及省電率。Recent improvements in high-performance processors and camera quality in mobile devices have led to the rapid development of the augmented reality industry, allowing users to enjoy the entertainment brought by augmented reality without paying high costs. However, previous studies have shown that the power consumption of augmented reality applications is much higher than that of non-augmented reality applications, due to the heavy use of GPUs and cameras. This study proposed a power saving scheme for mobile augmented reality by scaling the virtual object rendering rate and the screen refresh rate to achieve energy saving. By using low-power gyroscope and accelerometer inertial measurement components, the design can distinguish the current behavior of the user and calculate the panning speed of the mobile device to provide a proper energy saving solution. These schemes could be either reducing the object rendering frame rate to decrease GPU computation, or scaling the screen refresh rate to lower the power consumption of display. Finally, we implemented this design on a mobile device, Google Pixel 4 XL, to evaluate the accuracy of state recognition and the power-saving ratio.行動裝置擴增實境節能mobile deviceaugmented realitypower-savingetd