基于光谱成像的彩绘文物新应用与新方法

目前基于光谱成像的彩绘文物分析主要集中在颜料分析、信息增强、隐含信息挖掘等方面,分析方法主要采用遥感图像处理软件。针对文物数据专门分析方法研究尚显不足的问题,提出基于光谱成像的彩绘文物新应用与新方法。主要包括基于最小噪声分离(MNF)变换感知修复区域的新应用,利用感兴趣区域分析与融合挖掘彩绘文物隐含信息以及基于稀疏非负矩阵欠近似彩绘文物线稿提取的新方法。通过在唐墓壁画、彩绘泥塑以及手绘绢画上的实验,发现光谱成像可以有效感知修复区域,提出的新方法可以有效挖掘隐含信息以及提取线稿,对基于光谱成像的彩绘文物分析研究具有重要意义。     

敦煌壁画色卡数字成像色彩管理应用研究

敦煌壁画高保真数字化采集是其数字保护工作的重要基础。依据前期研究及自主研制的敦煌壁画色卡,对敦煌壁画高保真复制品数字采集工作中图像的色彩管理性能进行了研究,并与标准色卡Macbeth ColorChecker的色彩管理效果进行了主观对比评价。研究结果表明,相同拍摄条件下,自主研制的敦煌壁画色卡的色彩管理主观视觉评价结果优于标准色卡,且对于不同类型照明光源和不同偏色设定条件,自主研制的敦煌壁画色卡可以对偏色图像颜色进行有效校正。     

Lead Isotope Analyses Revealed the Key Role of Chang'an in the Mirror Production and Distribution Network During the Han Dynasty

Chang'an (now Xi'an) was the capital of the Western Han Dynasty and the starting point of the Silk Road. In the light of the importance of Chang'an as the centre of politics, economy and cultural interaction, the overarching question proposed in this paper is focused on its role in the mirror production and distribution network during Han period. On the basis of chemical and lead isotopic analyses of 34 Han mirrors, this paper discusses the potential existence of a mirror production centre in Chang'an. Meanwhile, a comparative study with mirrors uncovered from the south‐western frontier and from Central Asian and North‐East Asian countries offers new insight into these related issues.     

Microstructural and Componential Characterization of the Plating Technology on Chinese Han Dynasty Bronze Fragments

The bronze wares of the Han Dynasty excavated in Chongqing are decorated with plating patterns, maintaining an exquisite lustre right up to modern times after the covering patina is cleared away. In this paper, a plated fragment of the Han Dynasty from the Wushan County Museum was characterized by combining optical microscopy (OM), scanning electron microscopy with X‐ray energy‐dispersive spectrometry (SEM–EDS), X‐ray fluorescence analysis (XRF), X‐ray diffraction (XRD) and X‐ray photoelectron spectroscopy (XPS). The results showed that the bronze fragment was gilded with a ~ 3 μm thick gilded layer and a ~ 20 μm thick silvered layer. The high concentration of Hg and Hg‐rich intermetallic compounds confirmed the existence of mercury gilding/silvering technology, for example, Au₉Hg in the gilded layer and Ag₁₃Hg₇ in the silvered layer. An ordered stripe structure was observed in the gilded surface, corresponding to the formation of rod‐like, intermetallic Au–Hg compounds. Specifically, a high concentration of Au was detected in the silvered layer. The exploration of gilded/silvered bronze casts light on this ancient technology and the benefit of identifying, protecting and reproducing it.     

Multi‐Scalar Practices of the Korean State in Global Climate Politics: The Case of the Global Green Growth Institute

The paper examines the significance of state territoriality and the related multi‐scalar practices of the state in the light of the symptoms of post‐politics exemplified in global environmental governance. The focus rests on the South Korean government's Green Growth (GG) strategy and the efforts to export this strategy as a role model to emerging economies worldwide through the establishment of the Global Green Growth Institute. We begin with the question why the Korean government is going global with a political program that is heavily disputed at home. We then study the practices by which the state manages to maintain its territoriality under the conditions of global climate change. Lastly, we discuss how multi‐scalar practices of environmental governance in the GG strategy are applied by state and non‐state actors both in Korea and abroad.     

基于可见光谱特征提取的敦煌壁画颜料识别方法研究

为了对壁画颜料种类进行无损识别,根据不同的物质对光的吸收特性不同,决定着光谱反射率不同这一特性,提出一种基于可见光谱的颜料识别方法,并对敦煌壁画所用颜料进行了分析。提取可见光谱曲线二阶导数负数部分表征曲线峰值区域的几何轮廓,利用中值金字塔对提取结果进行三层分辨率表征以突出曲线峰值位置信息,归一化三种表征尺度并组合构建特征空间F,以欧氏距离为准则对壁画采样点与颜料库样本进行相似度判别,从而识别出壁画用颜料信息。结果表明,本研究构建的识别方法能够对壁画颜料种类进行无损识别,在壁画数字存档及修复领域具有一定的应用前景。     

世界文化遗产数字化保护与建设初探——以西藏罗布林卡古建筑为例

随着计算机及相关技术的迅猛发展,以数字近景摄影测量、三维激光扫描测量、虚拟现实等技术为基础的数字化保护与复原开始在古建筑保护中扮演重要的角色。但由于经费短缺,人员匮乏,制约了文化遗产数字化保护与利用的发展。为了更好地保护和利用好罗布林卡,应提高认识数字化保护建设,增强危机感。建立完整的罗布林卡古建筑数字化保护与展示技术,形成一套集建筑表征、内部结构、周围环境影响因素于一体的档案系统,利用数字平台打造综合性的罗布林卡文化遗产展示与推广平台。     

西方列强对外扩张和竞争中的埃及和埃及学

埃及学是由拿破仑军事远征和西方列强对外扩张催生的产物。它的建立和发展见证了埃及沦为殖民地的全过程。在英法等国收集文物、争夺考古发掘特权的过程中,诞生于殖民时期的埃及学经历了在欧洲列强文化中成长以及在夹缝中生存的不寻常历程,而西方学者语境下的埃及学所构建的古埃及历史与文化,使得现代埃及人处于两难的境地。     

书法正楷 市招圣手——唐驼其人其艺

唐驼是上个世纪30年代上海有名的写市招的高手。和他同时的还有天台山农刘介玉（1878—1932年）、马公愚（1890-1969年）。刘介玉学清道人李瑞清的魏碑,骨架峥嵘,结构比清道人还要夸张。马公愚的字则敦实厚道。三位写市招的高手,以唐驼最受欢迎。如今,上海那家以经营绸缎棉布闻名的老店“老介福”,店门口挂的金字招牌,还是唐驼当年写的那几个字,这是唐驼卖字生涯的处女作。