西藏矿产资源潜力评价遥感专题中典型问题初探  

A Preliminary Discussion on Typical Problems in the Remote Sensing Project of Tibetan Mineral Resources Potential Evaluation

作　　者：倪忠云[1,2] 何政伟[1,2,3] 吴华 刘婷婷[1,2] 

机构地区：[1]成都理工大学地质灾害防治与地质环境保护国家重点实验室,成都610059 [2]成都理工大学地球科学学院,成都610059 [3]首都师范大学资源环境与地理信息系统北京市重点实验室,北京100037 [4]西藏自治区地质调查院,拉萨850000

出　　处：《国土资源遥感》2011年第1期97-101,共5页Remote Sensing for Land & Resources

基　　金：中国地质调查局地质调查项目(编号:1212010813025);国家自然科学基金项目(编号:40972225);国家"十一五"科技支撑计划项目(编号:2008BAK49B02)共同资助

摘　　要：西藏矿产资源潜力评价项目遥感专题通过提取各1∶25万标准图幅及全区遥感异常信息和编制遥感推断地质构造图,为项目地质背景编图、成矿规律研究和矿产资源预测提供了基础性图件。因西藏全区面积广阔、涉及的遥感图像时相各异、图像处理软件及方法流程复杂,加之技术人员专业背景和经验等差异,在遥感专题实施中出现了4个典型问题:①对基准面和地图投影认识不准,忽视遥感影像图件投影偏差;②在异常信息提取中对干扰信息去除过多或过少,未能有效保证空间拓扑关系的完整性;③遥感图像拼接及色调均衡策略使用不当;④矿产地质特征解译中成果数据的准确性不够。针对上述4个问题,提出了切实可行的解决方法,保证了专题成果的质量。The main purpose of the mineral resources potential assessment research based on the remote sensing method in Tibetan region is to extract abnormal remotely sensed information, make several kinds of geological maps, and provide basic maps and data for other cooperating research groups. Four typical problems have appeared in the project because of vast area, multi -temporal remote sensing images, too much software, complex processes and technical differences in technicians＇ professional background and experience. The first problem is the incorrect understanding of the datum and map projection and the ignoring of the remote sensing image map projection distortion; the second problem is deleting too much or too little interference information and incomplete spatial topological relations during the anomaly information extraction; the third problem is the inappropriate strategy of remote sensing image mosaicking and color balancing; the fourth problem is low accuracy in the interpretation of geological features of mineral resources. Focused on these four problems, this paper proposed a practical solution which ensures the successful completion of the remote sensing project.

关 键 词：矿产资源潜力评价 坐标系统 异常信息提取 影像拼接 矿产地质特征解译 

分 类 号：TP79[自动化与计算机技术—检测技术与自动化装置]