Scholarlink

<p>This study presents a monocular 3D active thermography approach based on laser line scanning for high-precision inspection of lacquered wooden cultural artifacts. By integrating continuous line-laser excitation with an infrared camera, a unified mapping framework was established using spatial transformation and temporal calibration matrices. This configuration correlates transient thermal-response sequences with three-dimensional geometric coordinates, enabling the synchronized reconstruction of surface topography and internal defect signatures without external 3D scanning hardware. Experimental validation on an antique-style lacquer plate with nine prefabricated flat-bottom holes (diameter-to-depth ratios from 2.5 to 15) demonstrated that the method effectively identifies subsurface anomalies while maintaining a low temperature rise of ~1.61 °C, ensuring the thermal safety of organic heritage materials. The results indicate that this lightweight, non-contact method intuitively visualizes the spatial coupling between surface decoration and internal degradation, offering a robust technical solution for digital preventive conservation and restoration of complex lacquerware.</p>

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

3D thermography for the surface and internal defects detection of lacquerware artifacts

  • 期刊论文

  • 出版模式：

    开放获取

  • 发表日期：

    2026年7月11日

查看全文
  • Baoyuan Deng,
  • Yuchen Wu,
  • Yunze He,
  • Haoxuan Wu,
  • Haoquan Li,
  • Yifei Wang,
  • Yaonan Wang

摘要

This study presents a monocular 3D active thermography approach based on laser line scanning for high-precision inspection of lacquered wooden cultural artifacts. By integrating continuous line-laser excitation with an infrared camera, a unified mapping framework was established using spatial transformation and temporal calibration matrices. This configuration correlates transient thermal-response sequences with three-dimensional geometric coordinates, enabling the synchronized reconstruction of surface topography and internal defect signatures without external 3D scanning hardware. Experimental validation on an antique-style lacquer plate with nine prefabricated flat-bottom holes (diameter-to-depth ratios from 2.5 to 15) demonstrated that the method effectively identifies subsurface anomalies while maintaining a low temperature rise of ~1.61 °C, ensuring the thermal safety of organic heritage materials. The results indicate that this lightweight, non-contact method intuitively visualizes the spatial coupling between surface decoration and internal degradation, offering a robust technical solution for digital preventive conservation and restoration of complex lacquerware.