If you can't find a local site operations group that can provide a CAD image of the building, try taking a digital image of the building map diagrams posted near the entrances of your building.
如果找不到当地测绘工作组提供的建筑物CAD图像，那么可以拍摄一张建筑物入口附近贴出的建筑物平面示意图的数码图像。
This paper is a part of the research result of mathematical morphology, digital image analysis and recognition of the map.
本文是作者关于“数学形态学与数字地图图像的分析和识别”研究成果的一部分。
The experiment was made on base of workflow of aerial photogrammetry, the experiment result shows that the digital image can produce large scale map, and several conclusion is induced at last.
基于航空摄影测量作业流程进行了航拍试验，分析得出数码航空摄影测量完全能满足大比例尺测图的要求，最后总结了数码相机进行航拍成图的几点结论。
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