CAJ | 학술논문

分析了版本式更新和增量式更新的优缺点，归纳了地物变化的种类，分析了地物变化信息如何识别，并设计了增量式更新模型，最后基于CAD数据，通过新设删除图层和新增图层完整记录地物变更信息，借助图形比对自动提取GIS地形图数据库变更图斑并完成现状地物的替换，实现地形图图形数据的增量更新建库，并对模型进行了数据验证，最后给出配套软件的设计思路。
분석료판본식경신화증량식경신적우결점，귀납료지물변화적충류，분석료지물변화신식여하식별，병설계료증량식경신모형，최후기우CAD수거，통과신설산제도층화신증도층완정기록지물변경신식，차조도형비대자동제취GIS지형도수거고변경도반병완성현상지물적체환，실현지형도도형수거적증량경신건고，병대모형진행료수거험증，최후급출배투연건적설계사로。
Advantages and disadvantages of the version update and incremental update is analyzed ,types of features change is summarized ,how to recognize features change information is analyzed ,and incremental update model of topogra-phy data is designed at last .Based on CAD data , through adding the new delete layer and add layer to record object change information ,With the help of graph matching technology to extract changing object from map database and replace the current object,to achieve incremental update of topographic map dataset ,finally,carry out a test of this new model by using topographic map ,finally ,give a idea to guide software design .