“辽金古城”遗址遥感分析策略与提取技术研究  

作　　者：张宇 李远华[1] 刘嘉宸 徐达 蔡德森 

机构地区：[1]吉林大学地球探测科学与技术学院,吉林长春130026

出　　处：《科技风》2023年第30期71-74,共4页

基　　金：教育部国家级大学生创新创业训练计划项目(202210183222);中国地质调查局资金资助项目(编号:GFZX0404130302)。

摘　　要：为了解决“辽金古城”遗址遥感信息提取面临的各项问题,提出“点位修正、局部检索、区域扫面分析”三个层次的分析策略;按遗址保存程度划分为五种类型,设计了从宏观到微观,由外及内收缩式的遥感分层提取技术。研究结果表明:类似“辽金古城”遗址空间信息可划分为“微观粗略定位、局部大致定性、区域模糊描述”三种类型,可采用“点位修正法、局部检索法、区域扫面分析法”开展古城目标检索与分析;可用Geodatabase空间数据库管理古城核心要素数据,更好地体现古城的整体架构与局部信息;利用遥感技术提取古城要素时应与其检索、分析策略对应,采取分层逐步式、类型差异化提取,重点获取遗址框架、组成要素、重要部件等空间信息;提取结果显示,东北辽金古城呈现南稠北稀、东疏西密的分布态势,现存古城大多为残缺型,侵蚀严重,这也从另一方面证明本文技术的有效性与可操作性。In order to solve the problems of remote sensing information extraction from the"Liao-Jin Ancient City",We propose a three-level analysis strategy of"Point Correcting method,Local Searching method,and Regional Sweep Analyzing method".Then,this paper divides the ancient city sites into five types.Finally,we propose a macro to micro,external to internal contracting remote sensing hierarchical extraction technique.The research results show that the spatial information of sites like"Liao-Jin Ancient Cities"can be classified into three types:"microscopic rough localization,local rough characterization,and regional fuzzy description".Therefore,when carrying out the remote sensing information extraction method,three levels of processing are needed.Spatial retrieval and extraction techniques such as“Point Correcting method,Local Searching method,and Regional Sweep Analyzing method”.Moreover,the Geodatabase spatial database can be used to manage the core elements of the ancient city to better reflect the overall structure and local information of the city.The remote sensing extraction of ancient city elements should correspond to the retrieval strategy,adopting a hierarchical step-by-step technique to extract different types of ancient cities in a targeted manner,focusing on obtaining information such as city wall boundaries,city defense facilities,and important components.Based on the data obtained from this paper,it is found that the distribution of ancient cities in Northeast China is dense in the south and west,sparse in the north and east.We also found that most of the existing cities are dilapidated and severely eroded,which proves the effectiveness and operability of this technique.

关 键 词：辽金古城 空间检索 空间数据模型 遥感提取方法 

分 类 号：K87[历史地理—考古学及博物馆学]