基于GDAL的ESRI Shapefile格式文件处理

ESRI Shapefile file handling based on GDAL

随着遥感应用技术的不断发展,对ESRI Shapefile格式图像文件的处理需求变得日益紧迫。目前能对它进行处理的软件有很多,但是这些软件运行时占用大量系统资源,而直接将商业软件嵌入到自主开发的软件中也是不可取的。因此,能够在自主开发的遥感图像处理软件中实现对ESRI Shapefile格式文件的操作已经变得非常重要。通过对ESRI Shapefile格式的影像数据结构特征分析,提出基于GDAL实现ESRI Shapefile格式文件到png文件格式的转换和处理方法,包括地理信息获取、坐标系统转换和文件格式转换。通过试验验证了该方法的可行性。

With the incessant development of remote sensing application technology, the demand for analyzing the image files of ESRI Shapefile becomes more and more. There are a lot of software available currently. However, these software take up redundant resources at runtime. It is inadvisable to directly embed the commercial software into the self-developed software. Therefore, it is become important to handle ESRI Shapefile format file with self-developed remote sensing image processing software. Through analysis on the image date and structure features of the ESRI Shapefile format, the conversion method of ESRI Shapefile files to png format based on GDAL is proposed, including acquiring geographic info, coordinate transformation and format conversion. The practice shows the feasibility of the method.