US 6,983,205 B2
Compressing location data of moving objects
Ying Chen, Beijing (China); Fang Yan Rao, Beijing (China); and Xiu Lan Yu, Beijing (China)
Assigned to International Business Machines Corporation, Armonk, N.Y. (US)
Filed on Dec. 05, 2003, as Appl. No. 10/729,225.
Claims priority of application No. 02154031 A (CN), filed on Dec. 06, 2002.
Prior Publication US 2004/0158398 A1, Aug. 12, 2004
Int. Cl. G01C 21/26 (2006.01); G06F 19/00 (2006.01)
U.S. Cl. 701—209 20 Claims
OG exemplary drawing
 
1. A method for compressing large number of location data of moving objects during a continuous time, comprising the steps of:
a) receiving current location data of a moving object;
b) determining whether the object was in motion of translation previously;
c) if determined in step b) the object was in translational motion, determining whether the object continues to move translationally after taking account of the current location, if yes, not updating the location data;
d) if determined in step c) the translational motion is no longer observed after taking account of the current location, updating the location data and returning to step a); and
e) if determined in step b) the object was not in translational motion, determining whether the object is moving randomly nearby, if yes, not updating the location data, otherwise updating the location data, setting the object in motion of translation and returning to step a).