Digital Archive of Cultural Heritages
Modeling from Reality : Acquiring and preserving 3D shape of cultural heritagesOur laboratory aims to develop various methods based on computer vision and graphics technologies to construct digital archives of cultural heritages. Such an archive would become crucial since these heritages can be lost with natural disasters; decay or other inestimable causes any time. Once the precise geometrical and photometrical properties are acquired, they can be useful for preservation, restoration, and simulation of degradation and multi-media contents for education. With this broad picture in our mind, we currently focus on how to obtain 3D geometrical shape with less human efforts.
The geometric modeling pipeline consists of three steps: mesh generation, alignment, and merging. For mesh generation, we use varieties of 3D laser scanners that have different measurement ranges and accuracies. For alignment of range images, we developed a robust simultaneous alignment method, which can be executed in a parallel manner for further efficiency. Also our merging method takes special care of sensor noise, by considering the consensus of multiple pre-aligned range images. So far, we have applied our geometric modeling pipeline to several important statues in Japan, including the Nara and the Kamakura Big Buddha.
Three steps of geometrical modeling.Publications
1. D. Miyazaki, T. Oishi, T. Nishikawa, R. Sagawa, K. Nishino, T. Tomomatsu, Y. Takase, K. Ikeuchi, gThe Great Buddha Project: Modelling Cultural Heritage through Observationh,@Proc. of VSMM, pp.138-145, 2000.10
2. K. Nishino and K. Ikeuchi, "Robust Simultaneous Registration of Multiple Range Images", in Proc. of Fifth ACCV '02, pp.454-461, Jan., 2002.
3. etc.. -> please see http://www.cvl.iis.u-tokyo.ac.jp/papers/index-j.html