Digital Topographic Map Quality Inspection System

In recent years,the new technologies have obtained the popularization application in the surveying profession,which has brought the opportunity for the surveying technique, promoted the surveying technique fast developing.Along with the computer technology and the geographic information system's continually consummate and the development,the manual charting was already substituted for by the computer digitization charting.The data's quality teaches the digital topographic diagram product in each domain application directly,therefore each link and data inspection proofreading in topographic diagram digitization work process's to the high grade digital terrain information acquisition is indispensably.The digital topographic diagram's quality testing has become essential,but the traditional inspection method already did not adapt the digital topographic diagram production's develop request,so it has the necessity to establish a set of new quality testing system.At present,there are a large number of researches for the digital topographic diagram quality testing system's fundamental and the practical application.But as a result of the digital topographic diagram quality testing complexity,the system that can carry on the automatic inspection completely is not realized.Along with the computer technology and the artificial intellectualization's development,realizing the survey quality control to program,realizing it automatism and intellectualization is an important direction of surveying technological development research.This article has analyzed the actuality of the digital topographic diagram quality tests by the numbers,has introduced the digital topographic diagram data quality's importance as well as the research quality testing system's necessity briefly,has described the quality testing method which in detail the digital topographic diagram quality tests content and uses at present,has discussed the digital topographic diagram quality testing evaluating indicator determination earnestly and had pointed out the existing inspection method's shortcoming,then has designed the digital topographic diagram man-machine interactive quality testing system,has expatiated the system's principle of design and the method of realization. The article has studied the digital topographic diagram quality testing system's feasibility.This system has established the data quality testing level which carries on the man-machine interactive inspect,would be label wrong symbols on the quality testing level directly,in would not change the original map in the situation,caused the check result to be clear.The inspect result of the digital topographic diagram would input evaluation system the qualitative appraisal from now on.The system's advantage are:causes the merit rating becomes convenient,direct-viewing,prompt,between the upper and lower layer evaluation result is clear,and saves the instrument and paper's use.