高光谱成像技术在中国画颜料分类和识别上的应用初探——以光谱角填图(SAM)为例
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摘要
为探索光谱角填图法在颜料分类和识别上的操作方法,用高光谱成像系统采集了现代中国画的高光谱图像,利用光谱角填图法对绘画所用颜料进行分类和识别。通过将多次分类识别结果与绘画实际所用颜料进行对比,发现采用光谱角填图时应根据不同的物质设置不同的阈值,方能取得好的填图效果;阈值大小的确定可通过对比已分类区域的平均光谱曲线和标准光谱库曲线来进行。通过对已知颜料进行光谱角填图的实践,探索颜料的光谱角填图规律,为未知中国画文物颜料的填图在阈值的设置上提供数据支撑,使高光谱成像技术更有效地应用于中国画文物颜料的鉴定和识别。
Hyperspectral imaging instrumentation was used to collect the spectral and spatial information on a modern Chinese painting. The spectral angle mapper( SAM) was selected to classify and identify the pigments used in the painting. The classification and identification results with actual pigments used are compared. It is found that in order to achieve more satisfactory results different threshold values must be assigned due to the different characteristics of the pigments. The threshold value could be ascertained by studying the mean spectrum of different classes in comparison with the standard pigments data base. Some technical details of SAM are discussed in order to provide data support for future studies on identification of pigments used in Chinese relic paintings.
Hyperspectral imaging instrumentation was used to collect the spectral and spatial information on a modern Chinese painting. The spectral angle mapper( SAM) was selected to classify and identify the pigments used in the painting. The classification and identification results with actual pigments used are compared. It is found that in order to achieve more satisfactory results different threshold values must be assigned due to the different characteristics of the pigments. The threshold value could be ascertained by studying the mean spectrum of different classes in comparison with the standard pigments data base. Some technical details of SAM are discussed in order to provide data support for future studies on identification of pigments used in Chinese relic paintings.
引文
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[2]Christian F,Ioanna K.Multispectral and hyperspectral imaging technologies in conservation:current research and potential applications[J].Rev Conserv,2006:3-16.
[3]周霄,高峰,张爱武,等.VIS/NIR高光谱成像在中国云冈石窟砂岩风化状况分布研究中的进展[J].光谱学与光谱学分析,2012,(3):790-794.ZHOU Xiao,GAO Feng,ZHANG Ai-wu,et al.Advances in hyperspectral imaging for studies in distribution of weathered sandstones in Yungang Grottoes[J].Spectr Spectr Anal,2012,(3):790-794.
[4]芦鑫.基于高光谱数据的壁画信息提取与分析[D].北京建筑工程学院硕士论文.2012.LU Xin.Information extraction and analysis of wall painting using the hyperspectral imging system[D].Master’s thesis of Beijing University of Civil Engineering and Architecture,2012.
[5]谭克龙,万余庆,杨一德,等.高光谱遥感考古探索研究[J].红外与毫米波学报,2005,24(6):437-440.TAN Ke-long,WAN Yu-qing,YANG Yi-de,et al.A hyperspectral remote sensing study in archeology[J].J Infr Millim Waves,2005,24(6):437-440.
[6]谭克龙,杨林,周日平,等.西安神禾塬地区高光谱遥感考古研究[J],应用基础与工程科学学报,2009,(5):675-682.TAN Ke-long,YANG Lin,ZHOU Ri-ping,et al.Hyperspctral remote sensing study for archeology in Shen He Yuan of Xi’an[J].J Appl Basic Eng Sci,2009,(5):675-682.
[7]田庆久.江苏西溪贝丘遗址的高光谱遥感考古研究[J].遥感信息,2007,(1):22-25.TIAN Qing-jiu.An archaeological study of Shell Mound in Xixi of Jiangsu province by hyperspctral remote sensing[J].Remote Sensing Inf,2007,(1):22-25.
[8]王琳琳.古遗址的高光谱数据信息提取方法研究[D].西北大学硕士论文,2012.6.WANG Lin-lin.Study on information extraction from hperspectral data of ancient sites[D].Master’s thesis of Northwest University,2012.6.
[9]Attas M,Cloutis E,Clooins C,et al.Near-infrared spectroscopic imaging in art conservation:investigation of drawing constituents[J].J Cult Herit,2003,4:127-136.
[10]童庆禧,张兵,郑兰芬.高光谱遥感——原理、技术与应用[M].北京:高等教育出版社,2006:166-167.TONG Qing-xi,ZHANG Bing,ZHENG Lan-fen.The principal,technique and application of Hyperspectral remote sensing[M].Beijing:Higher Education Press,2006:166-167.
[11]邓书斌.ENVI遥感图像处理方法[M].北京:科学出版社,2010:353.DENG Shu-bin.Remote sensing image processing methods of ENVI[M].Beijing:Science Press,2010:353.