摘要
对陶瓷碎片进行在线、快速分类检测在考古学中有着重要的意义。激光诱导击穿光谱技术(LIBS)具有非接触、快速、无需样品制备等特点,非常适用于陶瓷碎片的在线分类检测。实验利用自主研制的微型纳秒激光器搭建了微型LIBS系统,对陶瓷碎片进行快速检测,并使用主成分分析(PCA)提取出陶瓷光谱数据的主成分与载荷从而对古代陶瓷碎片样品进行分析。分析结果表明利用PCA可以对陶瓷碎片进行识别,但相近的元素组成不能被准确区分。进一步使用线性判别分析(LDA)进行分类后发现,古代陶瓷碎片样品的光谱均被正确分类。最后应用LDA分类算法对全部18块陶瓷碎片样品进行分类鉴别,总分类正确率达到98.15%。研究结果表明,利用微型LIBS装备可快速、准确识别文物碎片,可为文物碎片的保护与修复提供有效帮助。
It is significant for archaeology to detect fragments of ceramics on-line and rapidly.Laserinduced breakdown spectroscopy(LIBS)technique is well suited for the classification detection of ceramic fragments online for its characteristics such as non-contact,fast,and no sample preparation.A LIBS system equipped with a self-developed micro nanosecond laser was used to analyze the fragments of ceramic,and the principal components and loadings of ceramic spectral data were extracted using principal component analysis(PCA)to analyze the ancient ceramic fragment samples.The analysis results show that the ceramic fragments can be identified by using PCA,but similar element compositions cannot be accurately distinguished.Further classification using linear discriminant analysis(LDA)show that the spectra of the ancient ceramic fragment samples can be correctly classified.Finally,LDA classification algorithm was used to classify and identify all 18 ceramic debris samples,and the total classification accuracy is 98.15%.The results show that the use of micro-LIBS equipment can quickly and accurately identify cultural relics fragments,which can provide effective help for the protection and restoration of cultural relics fragments.
作者
王韶仪
冯中琦
许文忠
侯佳佳
路智勇
张勇剑
张大成
WANG Shaoyi;FENG Zhongqi;XU Wenzhong;HOU Jiajia;LU Zhiyong;ZHANG Yongjian;ZHANG Dacheng(School of Optoelectronic Engineering,Xidian University,Xi'an 710071,China;Shaanxi History Museum,Xi'an 710061,China;Key Scientific Research Base of Mural Painting Conservation&Material Research,State Administration for Cultural Heritage,Shaanxi History Museum,Xi'an 710061,China;Shaanxi Academy of Archaeology,Xi'an 710054,China)
出处
《量子电子学报》
CAS
CSCD
北大核心
2024年第3期543-552,共10页
Chinese Journal of Quantum Electronics
基金
国家自然科学基金(U2241288,62205257)
量子光学与光量子器件国家重点实验室开放课题(KF202104)。
关键词
光谱学
激光诱导击穿光谱
陶瓷碎片
主成分分析
线性判别分析
spectroscopy
laser-induced breakdown spectroscopy
ceramic fragments
principal component analysis
linear discriminant analysis
