A Method of Generating Indoor Map Spatial Data Automatically from Architectural Plans

doi:10.11947/j.AGCS.2016.20150658

Abstract

Abstract: Taking architectural plans as data source, we proposed a method which can automatically generate indoor map spatial data. Firstly, referring to the spatial data demands of indoor map, we analyzed the basic characteristics of architectural plans, and introduced concepts of wall segment, adjoining node and adjoining wall segment, based on which basic flow of indoor map spatial data automatic generation was further established. Then, according to the adjoining relation between wall lines at the intersection with column, we constructed a repair method for wall connectivity in relation to the column. Utilizing the method of gradual expansibility and graphic reasoning to judge wall symbol local feature type at both sides of door or window, through update the enclosing rectangle of door or window, we developed a repair method for wall connectivity in relation to the door or window and a method for transform door or window into indoor map point feature. Finally, on the basis of geometric relation between adjoining wall segment median lines, a wall center-line extraction algorithm was presented. Taking one exhibition hall's architectural plan as example, we performed experiment and results show that the proposed methods have preferable applicability to deal with various complex situations, and realized indoor map spatial data automatic extraction effectively.

Key words: indoor map, architectural plans, spatial data, wall connectivity repair, wall center-line extraction, gradual expansibility and graphic reasoning

CLC Number:

P208

SUN Weixin, WANG Guangxia, ZHANG Jinming, YOU Tian. A Method of Generating Indoor Map Spatial Data Automatically from Architectural Plans[J]. Acta Geodaetica et Cartographica Sinica, 2016, 45(6): 731-739.

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