GIS中数字图像与地理位置的整合方法与应用

Integration methods and applications of digital image and location in GIS

随着GIS数据采集的多样化,数字图像成为GIS主要属性信息,而且数字图像比单纯的文字信息更加客观形象、生动直观。为使数字图像与地理位置有机地结合在一起,提出在图像EXIF信息的GPS数据段中通过写入读取GPS信息使数字图像与地理位置信息整合的方法。详细描述了图像EXIF信息中数据格式并用GDI+获取EXIF信息中图像的元数据,同时探讨了利用这些元数据可进行的相关地理信息服务。

With the diversity of GIS data collected, digital images become the main GIS attribute information. And digital images are more objective,visual,vivid and intuitionistic than the simple text data.To make digital image integrate with location,the method of integrating digital image and location by written and read the GPS information in the GPS data segment of EXIF information is pretented.The data format of image EXIF information is depicted,and to obtain the metadata of image in EXIF information the GDI ＋ is used.The geographic information services what related to metadata is discussed.