基于PDA的遥感影像读取与显示

Study on the Read and Display of GeoImage Based on PDA

本文介绍了GDAL开源库,利用其编程实现了在PDA设备上直接从大遥感影像读取波段的颜色数据。采用离屏位图技术加快读取的影像块在设备屏幕上的显示速度,同时还实现了在设备上对遥感影像的浏览、漫游和缩放操作以及矢量图和遥感影像的叠加显示。

The paper introduced the open source Library of GDAL, and used it to program to achieve the reading of Band color data directly from big Remote sensing image on PDA device. With the technology of Off-Screen Bitmap, speeding up the display of image on the device＇s screen, further more, this paper realize the operations of browsing, pan and zoom with the image in the Device, and accomplish the overlay of vector map with the raster image.