摘要
针对传统方法中检测变形油画的表面形貌时需要将油画布拆卸下来的情况,提出了一种油画表面三维形貌无损检测的方法。应用结构光三维检测技术获取油画表面的绝对相位分布,使用最小二乘法拟合二次曲面作为参考面,再将绝对相位与参考面的差值作为实际相位,从而得到油画表面的高度分布。实验结果表明,该方法能够在不拆卸油画画布的情况下实现无损检测,对于不同变形程度的油画均具有较理想的检测效果。
Aiming at the situation that the oil canvas needs to be disassembled when detecting the surface topography of the deformed oil painting in the traditional method,a method for nondestructive detection of the three-dimensional topography of the oil painting surface is proposed.The absolute phase distribution of the oil painting surface is obtained by the threedimensional detection technology of structured light,the least squares method is used to fit the quadratic surface as the reference surface,and the difference between the absolute phase and the reference surface is used as the actual phase to obtain the height distribution of the oil painting surface.The test results show that the method can realize non-destructive testing without dismantling the oil painting canvas.It has an ideal detection effect for oil paintings with different degrees of deformation.
作者
杨明
李宏宁
杨鑫
陈豪
赵海
YANG Ming;LI Hong-ning;YANG Xin;CHEN Hao;ZHAO Hai(College of Physics and Electronic Information,Yunan Normal University,Kunming 650500,China)
出处
《光学与光电技术》
2022年第6期97-102,共6页
Optics & Optoelectronic Technology
基金
云南师范大学科创基金(ysdyjs2020146)
云南师范大学科创基金(YJSJJ21-B61)资助项目
关键词
结构光三维检测
相移轮廓术
最小二乘法
油画表面
无损检测
structured light 3D detection
phase shifting profilometry
least squares method
oil painting surface
nondestructive testing
