快速处理海量影像数据的技术应用与探讨

Application of Fast Processing Technology of Massive Image Data

随着国民经济建设的高速发展,国家的基础建设对于基础地理信息的高效供应量越来越大,急需要一种能够在无需重新测量地面控制点和人工过多干预的情况下,快速自动化数据处理海量卫星影像的操作技术。而PhotoMatrix技术采用多种先进的计算方法,可以直接引用原始数据、快速自动的完成DEM的提取、几何校正、由DSM自动生成所需要的等高线、最后自动完成DOM的生产。论文以全国第三次国土调查为例,对PhotoMatrix技术进行应用和探讨。

With the rapid development of national economic construction,the requirements of national infrastructure for basic geographic information are increasingly high.There is an urgent need for an operation technology that can quickly and automatically process massive satellite images without remeasuring ground control points and excessive manual intervention.Photomatrix technology uses a variety of advanced calculation methods,which can directly use the original data,quickly and automatically complete DEM extraction,geometric correction,automatically generate the required contour lines from DSM,and finally automatically complete DOM production.Taking the third national land survey as an example,this paper discusses the application of photomatrix technology.