Abstract. The augmented book is the system augmenting multimedia elements onto a book to bring additional education effects or amusement. A book includes many pages and many duplicated designs so that tracking a book is quite difficult. For the augmented book, we propose the hybrid visual tracking which merges the merits of two traditional approaches: fiducial marker tracking and markerless tracking. The new method does not cause visual discomfort and can stabilizes camera pose estimation in real-time.

Abstract. The progress of handheld devices has encouraged many researchers to make efforts to use handheld devices as an augmented reality platform. However, one of the important problems is a lack of immersion and reality due to small display. To overcome this problem, we introduce dynamic environment which consists of some movable structures and their controller that enable changes of virtual world to affect the real world. It has an effect on expanding the user's view limited by the small display of the handheld device. We have also developed the game content, 'Ghost Hunter', which is suitable for this platform.

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