Phra Atchana and Wat Si Chum
Phra Atchana and Wat Si Chum
Wat Si Chum located in Sukhothai Province, Thailand, is the part of the Sukhothai Historical Park, which was recognized as the World Heritage in December 1991. It was built at the late half of the 14th century(Sukhothai Period). The main sanctuary received the influence from Mon and has the squared Mondop structure. It houses the massive seated stone Buddha, Phra Atchana(approximately 15m high and 11.5m wide). There is the passage through the roof inside the wall of the main sanctuary. Engraved Jakata tale are now located on the ceiling of the passage.
Scanning
With the co-operation of Thai Department of Fine Art , the main sanctuary of Wat Si Chum and Phra Atchana was measured by laser scanner for their 3D models in March 2002. The roofless main sanctuary offers a little protection against the corrosion and algae from the tropical weather. The acquired 3D models can be referred to in the future reparation for their true size. In addition, the roof of the sanctuary can be visualized without physical construction.
Result
114 sets of scanning data from Cyrax 2500 were used to create the model of the main sanctuary. While 68 sets of scanning data(67 from Cyrax 2500 and 1 from Lara 53500) were used for Phra Atchana. After a manual refinement, the final 3D model of the main sanctuary and Phra Atchana consist of 913,589 voxels(1,780,835 polygons) and 1,230,642 voxels(2,409,889 polygons), respectively. Samples of the final result are shown here.Resulting Geometrical Model
Structure Size(VRML format) Number of Polygon
Main sanctuary 175,726 KB 1,780,835
Phra Atchana 241,033 KB 2,409,889
