US 11,990,041 B2
Moving body tracking system, moving body tracking method, and program
Atsushi Miura, Tokyo (JP); Tomoaki Tanaka, Tokyo (JP); Shinya Yamamoto, Tokyo (JP); Jiro Kawamata, Tokyo (JP); and Masaru Yokoyama, Tokyo (JP)
Assigned to NEC CORPORATION, Tokyo (JP)
Appl. No. 17/273,003
Filed by NEC Corporation, Tokyo (JP)
PCT Filed Sep. 4, 2019, PCT No. PCT/JP2019/034824
§ 371(c)(1), (2) Date Mar. 3, 2021,
PCT Pub. No. WO2020/050328, PCT Pub. Date Mar. 12, 2020.
Claims priority of application No. 2018-165566 (JP), filed on Sep. 5, 2018.
Prior Publication US 2021/0256848 A1, Aug. 19, 2021
Int. Cl. G08G 1/13 (2006.01); G06T 7/292 (2017.01); G08G 1/01 (2006.01); G08G 1/04 (2006.01)
CPC G08G 1/13 (2013.01) [G06T 7/292 (2017.01); G08G 1/0125 (2013.01); G08G 1/04 (2013.01); G06T 2207/30236 (2013.01)] 12 Claims
OG exemplary drawing
 
1. A moving body tracking system, comprising:
a first camera that captures one or more images of a moving body entering a first intersection,
a plurality of second cameras installed in a plurality of locations set as destinations of the moving body entering the first intersection,
a memory configured to store a program, and
a processor configured to execute the program, that when executed performs operations comprising:
determining a moving direction of the moving body entering the first intersection due to a change in direction of the moving body based on data captured by the first camera;
selecting a second camera from the plurality of second cameras based on the moving direction of the moving body;
searching a frame of one or more images captured by the selected second camera for the moving body;
specifying a moving path of the moving body;
estimating an estimated arrival time of the moving body to a point where the selected second camera is installed;
determining whether or not loss of sight of the moving body under tracking has occurred based on whether the moving path of the moving body can be specified at the point where the selected second camera is installed at the estimated arrival time;
end the tracking of the moving body, in a case that loss of sight of the moving body under tracking has occurred;
storing path information indicating a path for respective identified moving body; and
displaying map information depicting the path of the moving body accepted from a predetermined user terminal on a predetermined map.