Abstract
Dunhuang Art Cave (DAC), one of the most famous cultural heritage sites in the world, is confronted with serious natural efflorescence. How to virtually rebuild the caves and support their investigation and exploitation with computer graphics (CG) and Virtual Reality (VR) technologies is an urgent and important project. In this paper we discuss in detail the essential technical issues in our image-based virtual DAC navigation system. For DAC modeling of the cave architecture we employ 3D surface modeling, texture and 2D image-based modeling, murals, and painted statues. For DAC rendering we use the level of detail (LOD) method for murals and image-based rendering for painted statues. For DAC shadow generation we investigate a simple 3D model-based solution. Finally, this paper will show the general system architecture as well as demos of virtual navigation.
Highlights
Dunhuang Art Cave (DAC) is one of the most famous cultural heritage sites in the world
DAC was ranked as a national key culture relic by the State Council of the P
DAC is confronted with serious natural efflorescence and dangers
Summary
Dunhuang Art Cave (DAC) is one of the most famous cultural heritage sites in the world. DAC was ranked as a national key culture relic by the State Council of the P. R. China in 1961, and as a world history and cultural heritage relic by UESCO in 1987. The problem of investigating and exploiting the cultural relics is a very complicated and urgent task. Our project [1][2] is just to do research and develop a virtual navigation system as an effective tool for DAC research. In this paper we shall discuss in detail the key technical issues, namely image-based modeling, rendering, and shadow generation. In the last section we shall outline the general system architecture and show demos of DAC virtual navigation
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