Title:
空間的目標データインデックスエンジン
Document Type and Number:
Japanese Patent JP2004503838
Kind Code:
A
Abstract:
A method of indexing spatial object data comprises dividing space that contains objects based on the clustering of the objects within the space. A computer readable medium contains computer executable instructions. The instructions cause the computer to divide a space containing spatial objects based on clustering of the objects within the space. A method of searching spatial object data includes utilizing spatial object data that has been gridded based upon clustering of the spatial objects. The grids are then recursively checked to see if they cover a range of interest. If the grids overlap the range of interest objects within the grids are checked to see if they satisfy a search criterion.
Inventors:
Song, ipping
Application Number:
JP2001535819A
Publication Date:
February 05, 2004
Filing Date:
October 27, 2000
Export Citation:
Assignee:
SIEMENS TRANSPORTATION SYSTEMS,INC.
International Classes:
G09B29/00; G01C21/00; G01C21/32; G06F17/30; G09B29/10; (IPC1-7): G06F17/30; G01C21/00; G09B29/00; G09B29/10
Attorney, Agent or Firm:
Koichiro Kato