利用DXF格式实现GeoTIFF图像在AutoCAD中的自动配准  

GeoTIFF Image Automatically Orientation in AutoCAD Using DXF Format

作　　者：罗进华[1] 

机构地区：[1]中海油田服务股份有限公司,天津300451

出　　处：《工程地球物理学报》2015年第3期418-422,共5页Chinese Journal of Engineering Geophysics

摘　　要：在AutoCAD中手动插入带有地理坐标的图片效率低,定位精度差。本文以GeoTIFF图像为例,提出了一种利用DXF格式,在脱离AutoCAD环境下,将带坐标信息的图片按实际坐标准确、快速插入到AutoCAD中的方法。实现过程是:先编程提取GeoTIFF图像的关键信息,然后利用DXF格式引用外部图像的存储规则,通过将GeoTIFF图像的路径、角点坐标、像素分辨率等参数写入相应组值,实现图像在AutoCAD中的自动插入与坐标精确配准。实践表明,该方法不仅可实现GeoTIFF格式图像的批量插入,亦可推广到其它附带坐标信息的栅格图像,且具有实现过程简单,运行高效的特点。It is inefficient and inaccurate to insert manually images with geographic coordi- nate into AutoCAD because you need to take much time to zoom images to the actual size and move to the accurate position. Taking the Geographically Registered Tagged Image File Format （GeoTIFF） for example, this paper proposes a new method to insert a raster image with coordinate file into AutoCAD according to the rule of Drawing eXchange File （DXF） format. The algorithm of inserting and locating automatically a GeoTIFF image into Auto- CAD is as follows： firstly, get the key information from GeoTIFF image by programming; then, based on the rules of group codes of the external reference image in DXF, output the image path, corner coordinates, pixel resolution and so on to the corresponding group code of DXF. With this method, one can insert many GeoTIFF files into AutoCAD to their actual coordinate simply and efficiently, and it may be applied to other format of raster images with additional coordinate files.

关 键 词：影像配准 

分 类 号：P237[天文地球—摄影测量与遥感]