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Research Of Spatial Data Collection System Facing GIS Based On Vehicle-Borne Mobile Mapping System

Posted on:2009-04-23Degree:MasterType:Thesis
Country:ChinaCandidate:C LiangFull Text:PDF
GTID:2120360245976789Subject:Cartography and Geographic Information System
Abstract/Summary:PDF Full Text Request
Along with fast development of society and economy, road and the infrastructure change with each passing day. At the same time, there is a great demand for spatial data of high quality. Only the survey result to be renewed quickly, just it has more practical characteristics such as real time,overall,accurate and so on. Themobile mapping system (MMS) which is supported by the modern high technology is a kind of way that collects the GIS spatial data quickly. The MMS can obtain the spatial data and attribute data of the roads and other geography targets on both sides of the roads quickly. This method of obtaining GIS data using MMS is becoming a good complement to the traditional artificial measure method and photogrammetry method with its advantages such as high-efficiency and low cost. The research to MMS and MMS-basedGIS spatial data collection has important theoretical and practical values, which promotes not only the survey research of our country, but also the level of information-based transportation of modern management.The data processing of MMS system can only survey coordinates or distance on stereo images which are obtained by CCD cameras in MMS system. But our goal is to obtain the structured GIS spatial data. So the research of vehicle-borne spatial data collection system facing GIS is a key content of MMS data processing researches.This research is based on a vehicle-borne MMS named 3DRMS. Main contents are as follow:(1) The spatial data collection and editor processing facing GIS. This paper use the geodatabase data saving model. At the Catalog mode, we customize the target object feature class. At the Map mode, we can collect the data of geographic objects directly and save the structured GIS data in the geodatabase. So we can obtain the GIS data from one station. As for errors of the attribute data and spatial data, we can use the editor tools to correct them. As for the geographic objects which can not been collected for the information blind spot and the geographic objects which can not been collected at one time, we can use the editor tools to correct them.(2) The data organization and management facing GIS in visualization. We designed Map mode and Catalog mode to work with data collection face GIS, and this two work modes can intercommunicate very well. At the Map mode, we organize and manage multi-source data by layers in observation. The multi-source data include trace point and trace line which have been created automatically, target object feature class which is customized and imported to current map, other foundation GIS spatial data imported to current map. In order to support data collection based MMS, we designed dynamical associating stereo images with the trace points; At the Catalog mode we use windows explorer to organize our project. And in this mode we customize and create feature class in geodatabase which is created automatically as a container to save collections of products. In this mode, we can organize and manage trace points, trace line, project map document and other GIS spatial data in observation.According to the above-mentioned research contents, the main research result obtained are as follows: We have integrated measurement based on CCD stereo images and GIS spatial data collection and data editor tools into one system very well and designed the process to collect structured GIS spatial data directly from CCD stereo images. We have realized GIS spatial data collection from one station based on MMS; According to the spatial position relativity of the CCD stereo images, we have put forward the concept of "GIS manager for CCD stereo images" in MMS, based on which we managed a lots of CCD stereo images obtained from MMS in the way of GIS. To support GIS spatial data collection, we designed a dynamic conjunction system which can conjunct the CCD stereo images, the trace points of the MMS. This design promotes the efficiency of GIS data production, as well as shorting the production period of GIS data. It has a great prospect of applicability.
Keywords/Search Tags:Mobile Mapping System, The GIS data collection, The CCD image data organization, ArcGIS Engine, geodatabase
PDF Full Text Request
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