| Title |
Development of Method to Rapidly Predict Absorption Rate of Traditional Roof Tiles using Hyperspectral Imaging Techniques |
| Authors |
황용하(Hwang, Yong-Ha) ; 권양희(Kwon, Yang-Hee) |
| DOI |
https://doi.org/10.5659/JAIK.2025.41.1.293 |
| Keywords |
Architectural Heritage; Hyperspectral Image; Handmade Traditional Roof Tile; Absorption Rate; Nondestructive Evaluation |
| Abstract |
To preserve traditional tile manufacturing techniques and maintain cultural heritage authenticity, encouraging the use of traditional roof tiles is
essential. However, the current quality assessment method is inadequate for addressing issues caused by low-quality roof tiles in the field,
such as damage to cultural heritage and a reluctance to use traditional tiles. This underscores the need for a new quality assessment method
incorporating advanced technology. In this study, a non-destructive, rapid inspection method using hyperspectral imaging techniques was
developed. For this purpose, traditional roof tile samples, classified into five quality grades, were prepared. Through these samples, reflection
values sensitive to internal moisture in the roof tiles were identified and represented in an image with seven prespecified colors. When
comparing this new technique with the current quality assessment method based on absorption rate, the colors in the hyperspectral images
showed a clear correlation with absorption rates. Specifically, low-quality tiles with an absorption rate above 13% appeared in purple or blue,
while commercial-grade tiles with an absorption rate below 13% were blue or green. This study is expected to help reduce the defect rate in
traditional roof tiles, particularly if camera products with this technology are distributed to tile manufacturers. |