A Hand-drawn Map Retrieval Method Based on Open Area Spatial Direction Relation

• Main Authors: AN Xiaoya, LIU Pingzhi, JIN Cheng, XU Daozhu, WANG Feng
• Format: Article
• Language: zho
• Published: Surveying and Mapping Press 2017-11-01
• Series: Acta Geodaetica et Cartographica Sinica
• Subjects: geographic information retrieval; hand-drawn map; open area spatial direction relation; similarity calculation
• Online Access: http://html.rhhz.net/CHXB/html/2017-11-1899.htm

To meet the needs of retrieving the geographic information intelligently,a hand-drawn map retrieval method based on open area spatial direction relation is proposed.Firstly,it is designed that a new type of open area spatial direction relation description model and calculation method based on the opening area between the hand-objects,which can be used to hand-drawn map retrieval,both can be adapted to accurately describe by open area,but also through the relaxation strategy to describe the fuzzy relationship.A hand-drawn map retrieval process based on open area spatial direction relation is proposed.The evaluation model,similarity calculation of spatial direction relation and R-tree spatial index are given.The experiment results show that the method can retrieve the top-ranking results effectively in a large scope map scene.