Quality Inspection System For Digital Topographic Maps

Topographic map contains a wealth of information, geographical information system, cadastral database development, land trades, urban planning, mapping and many other areas related businesses play an important role. The generation of digital topographic map and its low quality directly affects its application in many fields. In order to obtain higher-quality terrain data, digital topographic maps in addition to strengthening the supervision and management of the production process is more important is to strengthen the quality of the digital topographic map inspection. Digital topographic map of the quality inspection of a lot of work has been done, but did not take full advantage of today's increasingly powerful artificial intelligence, computer science and technology and advanced science and technology industry. Either the fair and equitable of field examination or the accuracy of inspection of indoor work examination is not very satisfactory. Therefore, the study more efficient intelligent digital map quality inspection method, has a strong practical significance.In this thesis, fair and impartial examination of foreign trade issues, using a computer program automatically through the sampling plan given sample point method, this method is more scientific and rational point on the topographic map of the split step to evaluate the mathematical precision; for the industry check the accuracy and efficiency in the problem of the digital topographic map of the various errors that may exist, and study how they are made automatically by a computer check of the various intelligent algorithms, such as property elevation contours abnormal, note elevation contour points and the contradictions between the dotted lines, contour lines intersect, polygon overlap, the correctness of physical layer, physical property specification sand suspension points and pseudo-node checks algorithm.In the above analysis, based on the AutoCAD platform, in this paper, the use of ObjectARX way, using VC++ implements a digital topographic map quality inspection system. The county industrial park and to a total of 3.2 square kilometers of the topographic map as an example, make an experiment.The results show that: For the digital topographic map, using this system makes that it can strengthen the fairness and justice of field examination, and improve the inspection accuracy and efficiency of indoor work examination.