基于国产影像的无图区居民地采集指标研究

Research on Collection Indexes of Residential Areas in Non-mapped Areas Based on Domestic Images

基于国产高分辨率遥感卫星影像,在四川省无图区选取了1幅1∶10000图幅作为研究区,分别以不综合、7 m综合、15 m综合3种尺度进行了居民地采集指标的研究,分析了居民地按房屋真形、以不综合方式进行采集制图的可行性。结果表明:居民地不综合和7 m综合2种尺度均可应用于1∶10000基础地理信息数据新测项目,符合其生产需求,但不综合方式生产时间较传统按15 m综合方式增加了4—8倍,制图图面负载量较大,符号边线压盖明显,不利于判读,因此,建议在城市地区尤其是房屋密集区域选用7 m综合尺度进行居民地采集,在广大农村房屋较稀疏地区按房屋真形不综合方式采集。

Based on domestic high-resolution remote sensing satellite images,a 1∶10000 map was selected as the study area in the non-mapped area of Sichuan Province,and the residential area collection indicators were carried out at three scales:non-integrated,7 m integrated,and 15 m integrated.The study analyzed the feasibility of collecting and mapping residential areas in a non-comprehensive manner according to the actual housing shape.The results show that both scales of residential area non-integrated and 7 m integrated can be applied to the new survey project of 1∶10000 basic geographic information data,which meets its production needs,but the production time of the non-integrated method is longer than the traditional 15 m integrated method about 4-8 times,the drawing surface load is large,and the symbol edge line is obviously covered,which is not conducive to interpretation.Therefore,it is recommended to use a 7 m comprehensive scale for residential collection in urban areas,especially in densely housed areas,to collect the houses in a non-comprehensive way in the vast rural areas where houses are sparse.