Figure 9. Face extension between two layers of slice images 
4. RESTORATION SYSTEM USING VR 
After generating a model at the relics, we work in the 
restoration. A restoration system configuration is shown in the 
Figure 10. We see virtual space at the stereo using HMD (Head 
Mounted Display). We hold object with the 2-D mouse and we 
work in the restoration with 3-D magnetic sensor. 
Figure 12. Surface model of KOIMARI bowl 
Figure 13. The generation comparison in the aspect of 
the luster 
Figure 10. Restoration system using VR 
5. RESTORATION RESULT 
5.1 Relic model generation 
The used relics are the KOIMARI bowl as shown in Figure 11. 
Surface models generated from the given relic fragments using 
this algorithm are shown in Figure 12. Because the surface of 
the KOIMARI bowl is a luster surface, it is difficult to get with 
a laser measurement. But we can confirm that detail of the 
model is reproduced with an X-ray CT (see Figure 13). 
Figure 11. Original fragment of KOIMARI bowl 
5.2 Restoration of relics 
The original shape of a relic is restored using fragments 
restored with this algorithm. In the restoration task, the original 
restoration system (see 4. restoration system using VR) is used. 
Figure 14 shows a result of restoration. 
Owing to the lack of some fragments, the restored relics include 
broken part. By using the tool of the restoration system, the 
fragment can be duplicated. The lack part is buried using the 
duplicated fragment (see Figure 15). 
Figure 14. A relic restored with proposed method 
Figure 15. Virtual restoration 
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