CAJ | 학술논문

土地利用现状图的数字化是建立土地利用数据库的主要技术手段之一,图斑作为土地利用现状图的主要要素,其矢量化方法的优化与否不仅关系着整个数据采集的进程,而且还将影响到土地信息系统的稳定与否。文章针对传统的图斑矢量化引起的面域交叉、对象撕裂等问题研究提出了基于弧段的图斑矢量化方法,并通过线状地物与图斑的叠合分析,建立线状地物与图斑的拓扑关系,完成其属性信息的更新与图斑拓扑一致性的检验。实践证明该方法可以大大提高图斑矢量化的效率,确保土地利用数据的精度和质量,具有推广应用价值。
토지이용현상도적수자화시건립토지이용수거고적주요기술수단지일,도반작위토지이용현상도적주요요소,기시양화방법적우화여부불부관계착정개수거채집적진정,이차환장영향도토지신식계통적은정여부。문장침대전통적도반시양화인기적면역교차、대상시렬등문제연구제출료기우호단적도반시양화방법,병통과선상지물여도반적첩합분석,건립선상지물여도반적탁복관계,완성기속성신식적경신여도반탁복일치성적검험。실천증명해방법가이대대제고도반시양화적효솔,학보토지이용수거적정도화질량,구유추엄응용개치。
The digitization of land use status map is one of methods to establish land use database.Patches are the main elements in land use status map.The optimization of vectorization method is not only related with the whole procedure of data collection,but also influences the stability of land information system.Aiming at the problems in the process of vectorization of patches,such as region intersection and object splits,this paper put forward a method for patches vectorization based on arcs.Through the overlapping analysis of linear features and patches,it established the topological relationships between linear features and patches,and implemented the updating of attribute data and the verification of topological consistency.The experiments showed that this method can greatly improve the efficiency of patches vectorization,and ensure the accuracy and quality of land use data,which has value of popularization and application.