The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences
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Articles | Volume XL-2/W4
Int. Arch. Photogramm. Remote Sens. Spatial Inf. Sci., XL-2/W4, 57–59, 2015
https://doi.org/10.5194/isprsarchives-XL-2-W4-57-2015
Int. Arch. Photogramm. Remote Sens. Spatial Inf. Sci., XL-2/W4, 57–59, 2015
https://doi.org/10.5194/isprsarchives-XL-2-W4-57-2015

  19 Oct 2015

19 Oct 2015

GROUPING METHOD FOR NEIGHBOR OBJECTS OF MOVING OBJECT USING HASH INDEX

B. Lee, J. Kim, and K. Yu B. Lee et al.
  • Dept. of Civil and Environmental Engineering, Seoul National University, 599 Gwanak-ro, Gwanak-gu, Seoul, Korea

Keywords: Grouping method, moving object, hash index

Abstract. A location-based social network (LBSNS) is a social network service (SNS) that is based on a user’s location, unlike SNS, and facilitates additional activities like neighbour-user search and group formation in real time. This research examined the efficiency of a real-time grouping method for extracted neighbour objects on a WMTS (Web Map Tile Service) for which a hash index was used. As a result, the suggested method is not different from buffering a neighbour area according to the average number of returned data per 1 km2, and the required time is shorter than that of buffering.