海量遥感图象快速显示技术

为了解决随着遥感技术的飞速发展而产生的海量遥感图象，以及在计算机显示时，操作不流畅的问题，结合当前计算机软件和硬件的技术对其原因进行了深入分析。并针对影响显示速度的图象漫游和缩小操作等关键问题提出了基于中间图象技术，栅格分块技术，高速缓存技术以及中间图象序列技术等解决手段。同时在Windows9X/2000操作系统上，利用VC^ 6.0给予了具体程序实现，并在浙江省水土流失遥感调查中得到了充分利用。实践表明本文提出的技术手段能够在现有的计算机条件下，较好地解决图象显示不流畅的问题。

Rapid Display Technique of Massive Remote Sensing Image

Massive data of remote sensing images has been generated as remote sensing technology develops rapidly. The disfluency when displaying massive data was once a problem. We found that these phenomena mainly occurred at the operation of panning or zooming out. In this paper, we analyze the reason of these phenomena at current level of computer software and hardware technology. We also present one method to solve this problem based on the intermediate-image technique, raster-division technique, cache technique and intermediate-image-sequence technique. We had programmed on Windows 9X/2000 platforms by Visual C 6 0 and applied this system at the investigation project of natural environment by remote sensing method in Zhejiang Province. In this project we accomplished the selection of reference points, image inlay and the matching of the TM images of Zhejiang province at 1997 and 2000. Our practices showed this method can avoid the stagnation when displaying in existing device conditions.