项目名称: 基于DEM地性线的遥感图像自动配准到地理底图上的方法
项目编号: No.41261085
项目类型: 地区科学基金项目
立项/批准年度: 2013
项目学科: 天文学、地球科学
项目作者: 丁琨
作者单位: 西南林业大学
项目金额: 48万元
中文摘要: 研究地形微分单元综合为混合地形像元的方法,构建高精度DEM推演粗尺度地形像元的计算机模拟理论与算法;探索像元尺度改变对DEM提取地性线的影响,构建自动提取多尺度地性线的方法;揭示多尺度DEM地性线的数量变化、空间位置变化特点及关系。研究单测站遥感图像所表达的地形信息的模式结构特征,构建自动提取地形特征点线的方法;研究并揭示遥感成像条件、分辨率对地形特征点线提取的影响。研究DEM地性线集合与卫星遥感图像地形特征点线集合之间的对偶关系,探索其对偶元素的几何特征和度量指标、以及产生对应的条件,构建基于窗口邻域的广义同名地物点的快速查找和匹配的方法;将卫星遥感图像自动配准到基础地理底图上的问题,转化为两个数据库中的广义同名地物点在邻域窗口内的匹配问题。进行计算机处理实验、地面调查和检验,最终完成卫星遥感图像精确自动配准到DEM上的方法研究。
中文关键词: 中低分辨率卫星图像;几何精纠正;数字地形模型;地性线;自动匹配
英文摘要: Research methods of the terrain differential units integrated as the mixed satellite image pixels that presented terrian features, and construct computer simulation theory and algorithm for extracting rough scale terrian features from for a highly precision DEM; Experiment and evaluation effection for DEM cell changing to the terrain features extraction, and construct the methods of automatic extraction of multi-scale terrian features; The study of pattern structures of topographic information presentation in none-stereoscopic remotely sensed image, and construct the methods of automatic extraction points and lines that presents topographic characteristics; Research and Reveal effection of remote sensing conditions and spatial resolution to the points and lines extraction. Research corresponding relationships between the sets of terrain features from DEM and the sets of points and lines from satellite image, and explore its dual elements and the geometrical characteristic, the measure index and the corresponding conditions, and construct methods of quickly find and matching the homonym points based on the window of the same neighborhood. Change the problem of the remote sensing image to be automatic registration to the base maps into the problem of the homonym points matching from two databases in the window nei
英文关键词: satellite images in medium or low resolution;geometric precision correction;digital elevatin model;terrain feature lines;automatic matching