【摘要】 数字正射影像(DOM)作为重要的4D产品之一,在测绘生产管理中和其他行业中得到广泛应用。由于影像数据占用存储空间巨大,因此存在调阅效率不高的问题。本文基于分块存储、按需加载的思路,基于Arc GIS设计实现了DOM栅格数据集的快速调阅扩展功能,对以国家基本比例尺分幅存储的DOM进行按需快速调阅。更多还原

【Abstract】 Digital orthophoto map( DOM) is one of the most important 4D products. It has been widely used in surveying production management and other industries. Since the image data costs large size of storage space,there is a problem that the retrieving inefficiency. Based on the idea of block storage and on-demand loading,this paper has designed and implemented an extension for quickly accessing DOM raster datasets based on Arc GIS. The DOM which is subdividing and numbering for the national primary scale topographic maps can be accessed on demand.更多还原