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Abstract. In this study, two types of marker-based tracking systems for Augmented Reality were developed: a tracking system using line markers and a tracking system using circular markers. Both markers were designed for use inside buildings such as nuclear power plants, which are very complicated and in which it is difficult to paste many large markers. To enlarge the area in which tracking is available using only a limited number of markers, a hybrid tracking method and a two-layer tracking method were also developed. The experimental evaluation shows that both methods can increase the available area compared to legacy methods such as single-camera tracking and simple square markers.

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