US 12,136,345 B2
Motion vector imaging alert system
Kei Nakagawa, Tokyo (JP)
Assigned to SONY GROUP CORPORATION, Tokyo (JP)
Appl. No. 17/440,164
Filed by SONY GROUP CORPORATION, Tokyo (JP)
PCT Filed Mar. 11, 2020, PCT No. PCT/JP2020/010506
§ 371(c)(1), (2) Date Sep. 16, 2021,
PCT Pub. No. WO2020/195822, PCT Pub. Date Oct. 1, 2020.
Claims priority of application No. 2019-059698 (JP), filed on Mar. 27, 2019.
Prior Publication US 2022/0148432 A1, May 12, 2022
Int. Cl. G06K 9/00 (2022.01); G06V 10/75 (2022.01); G06V 20/40 (2022.01); G06V 20/58 (2022.01); G08G 1/16 (2006.01); B60Q 9/00 (2006.01)
CPC G08G 1/166 (2013.01) [G06V 10/75 (2022.01); G06V 20/44 (2022.01); G06V 20/58 (2022.01); B60Q 9/008 (2013.01)] 13 Claims
OG exemplary drawing
 
1. An imaging system, comprising:
an event detection sensor configured to:
detect an event corresponding to an object; and
output an event signal based on the detected event;
an object recognition unit configured to:
execute a recognition process for the object based on the event signal; and
output a recognition result based on the execution of the recognition process;
a motion vector estimation unit configured to estimate a motion vector of the object based on the recognition result; and
a control unit configured to:
output warning information based on the motion vector of the object, wherein the warning information indicates an occurrence of a dangerous state;
determine that a ratio of an occupancy, of an angle of view of the event detection sensor, by the object is one of greater than or equal to a certain ratio;
determine that a movement vector of a center of gravity of the object is toward a center of the angle of view of the event detection sensor;
determine that a magnitude of the movement vector is one of greater than or equal to a first threshold value; and
control a characteristic of the event detection sensor based on each of:
the determination that the ratio of the occupancy, of the angle of view, by the object is one of greater than or equal to the certain ratio,
the determination that the movement vector of the center of gravity of the object is toward the center of the angle of view, and
the determination that the magnitude of the movement vector is one of greater than or equal to the first threshold value.