南京大学学报(自然科学版) ›› 2018, Vol. 54 ›› Issue (4): 680–.

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基于多源遥感影像的考古遗址识别与分析——以良渚古城为例

张依欣1,董少春1*,王晓琪2,尹宏伟1,徐士进1,胡 欢1   

  • 出版日期:2018-04-30
  • 作者简介:1.南京大学地球科学与工程学院,南京,210023;2.南京大学历史学院,南京,210023
  • 基金资助:
    基金项目:国家自然科学基金(41372353,40802080) 收稿日期:2018-03-29 *通讯联系人,E-mail:dsc@nju.edu.cn

Archaeological site identification and analysis using multisource remote sensing images — Take the ancient city of Liangzhu as an example

Zhang Yixin1,Dong Shaochun1*,Wang Xiaoqi2,Yin Hongwei1,Xu Shijin1,Hu Huan1   

  • Online:2018-04-30
  • About author:1.School of Earth Sciences and Engineering,Nanjing University,Nanjing,210023,China; 2.School of History,Nanjing University,Nanjing,210023,China

摘要: 随着空间技术的不断发展,卫星遥感影像以其高空间覆盖、高分辨率和无损探测等优势在考古遗址的发现中发挥着越来越重要的作用. 对卫星遥感影像的处理主要包括基于像素和面向对象的方法. 基于像素的影像处理方法能够在宏观上识别考古遗址的整体外貌,而面向对象的影像处理方法能够从地物的几何形态、纹理特征、空间分布及其相互关系等方面把握不同遗址类型的特征,从而实现有针对性的分类识别. 阐述了基于像素和面向对象相结合的遥感影像处理方法在考古遗址识别上的应用,并以良渚大型遗址群为例,利用高分辨率WorldView-2卫星的多光谱影像和全色波段影像、TerraSAR-X雷达影像和高精度的数字表面模型(DSM)识别并提取了作为良渚遗址群重要组成部分的城墙和城内的台地,从整体和细节两个方面对考古遗址进行甄别,并将识别结果与良渚古城已有的考古资料进行了对比,遗址识别吻合度达到83.84%. 这一识别结果证明了该研究思路的可靠性,具有很强的实践性,对提高考古遗址的识别精度和准确性、全面把握遗址的分布和类型具有重要意义.

Abstract: With the continuous development of space technology,satellite remote sensing images have played an increasingly important role in the discovery of archaeological sites due to their high spatial coverage,high resolution and non-destructive detection. The processing of satellite remote sensing images mainly includes pixel-based and object-oriented methods. The pixel-based image processing method can identify the overall appearance of the archaeological site macroscopically,while the object-based image processing method can grasp the characteristics of different types of sites in terms of the geometry,texture features,spatial distribution and their interrelationships,which is beneficial to achieve targeted positioning and identification. In this paper,the application of the method which combines pixel-based and object-oriented remote sensing image processing in the identification of archaeological sites is described. Taking the Liangzhu large-scale sites group as an example,one multispectral image and one panchromatic image of WorldView-2 satellite,one TerraSAR-X radar image and high-precision digital surface model(DSM)are applied to identify and extract the walls and platforms which are important parts of Liangzhu sites group. The result of the identification is highly coincident with the existing archaeological data of the ancient city of Liangzhu and it confirms the reliability of the research idea in this paper,which is of great value to improve the recognition accuracy of archaeological sites and to grasp the distribution of the sites comprehensively.

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