Expanding 9-intersection model with metric relations

In this work, eight types of segmentation measure and four types of interregional distance measure were proposed. Based on these measures 9-intersection model was extended. The measure value was used to replace the corresponding element in the 9-intersection matrix to show the measure property; the measure and the topology were combined together. The extended 9-intersection model can express both topology and measure information simultaneously, while enhances the expressive ability of the interregional relationship, furthermore, improves the expressive ability of topology. It also improves the accuracy and efficiency of spatial data querying, meanwhile, it more fits human recognition.