摘要
为了有效利用遥感资源,设计并实现了全球多源、多精度海量遥感影像实时浏览系统。建立全球数据的四叉树层次细节模型和基于数据集的网络分布式存储方案;提出以多边形描述数据集的形状,设计实现形状多边形生成算法,并基于形状多边形的几何信息进行多数据集影像拼接;设计算法并综合利用各种优化技巧,实现实时显示。利用以上技术实现的实时浏览系统显示效果好、显示效率高,在普通微机上漫游速度达每秒65帧以上。
To use remote sensing resource,a browsing system for global massive data with multi-source,multi-resolution and irregular shape is designed.In order to manage massive data,quadtree-based level of detail and dataset-based storage technique is presented.For effectively fusing images with multi-source,multi-resolution and irregular shape,polygon is used to describe dataset＇s shape,and expound two shape-polygon generating method for different data＇s source.Finally,the display algorithm is presented.The system implemented based on above techniques has achieve walkthrough speed exceed 65fps on PC platform with appropriate hardware.
出处
《计算机工程与设计》
CSCD
北大核心
2010年第20期4520-4523,共4页
Computer Engineering and Design
关键词
四叉树
海量遥感影像
数据集
形状多边形
实时浏览
quadtree massive remote sencing image dataset shape polygon real-time browse
