A novel method for the virtual  restoration of cultural relics based on a 3D fne model

Authors

Miaole Hou Beijing University of Civil Engineering and Architecture, Zhanlanguan Road 1#, Beijing, 100044, Beijing, China Author
Su Yang Beijing University of Civil Engineering and Architecture, Zhanlanguan Road 1#, Beijing, 100044, Beijing, China Author
Yungang Hu Beijing University of Civil Engineering and Architecture, Zhanlanguan Road 1#, Beijing, 100044, Beijing, China Author
Yuhua Wu Historic Cultural Research Institute, Gaoyuan Street 2#, Beijing, 100029, Beijing, China Author
Zhiquan Shu University of Washington, WA 98115, Washington, U.S.A Author
Xuedong Zhang Beijing University of Civil Engineering and Architecture, Zhanlanguan Road 1#, Beijing, 100044, Beijing, China Author

Virtual restoration, Restoration evidence, Geometrical characteristic, Regression model

Virtual restoration technology is widely used in the protec-

tion of cultural relics. Due to the lack of restoration evidence

needed for virtual restoration of cultural relics, a 3D virtual-

restoration method is proposed in this paper which uses a re-

gression model to estimate the restoration evidence of a group

of cultural relics.Apredictive regression model was established

by analyzing the geometric characteristics of the intact parts of

agrouptoreflectthescalingrelationsamongthegeometriccha-

racteristics, then the geometric characteristics of the incomple-

te/missing parts were predicted using the proposed regression

model. The precision of the virtual restoration of cultural re-

lics can be improved significantly with this method. Lastly, the

restoration of incomplete/missing fingers of the DaZu Thou-

sand-Hand Bodhisattva statue is used as an example. To test

the method, the length of an existing defective middle finger

(which was 216 mm) was chosen, and the possible actual length

of the middle finger was successfully estimated with the regres-

sion model (which was 235 mm with a prediction error of ±7

mm). The test results showed the proposed method is feasible

for virtual restoration in a group of relics.