US 11,682,217 B2
Surveillance device, learning device, surveillance method and storage medium
Takashi Konashi, Tokyo (JP); Satoru Yamano, Tokyo (JP); and Shohei Mitani, Tokyo (JP)
Assigned to NEC CORPORATION, Tokyo (JP)
Appl. No. 17/52,957
Filed by NEC Corporation, Tokyo (JP)
PCT Filed May 7, 2019, PCT No. PCT/JP2019/018202
§ 371(c)(1), (2) Date Nov. 4, 2020,
PCT Pub. No. WO2019/216295, PCT Pub. Date Nov. 14, 2019.
Claims priority of application No. PCT/JP2018/017735 (WO), filed on May 8, 2018.
Prior Publication US 2021/0248385 A1, Aug. 12, 2021
Int. Cl. G06V 20/56 (2022.01); G06N 20/00 (2019.01)
CPC G06V 20/56 (2022.01) [G06N 20/00 (2019.01)] 21 Claims
OG exemplary drawing
 
1. A surveillance device comprising:
a memory; and
at least one processor coupled to the memory,
the processor performing operations, the operations comprising:
receiving a plurality of data frames, each containing at least one parameter of a plurality of parameters, the plurality of parameters representing at least one state of an apparatus;
calculating, based on a value of each of the plurality of parameters a change in the state of the apparatus; and
determining whether the change is included in an allowable range determined in accordance with the state of the apparatus before the change and whether the change is included in the allowable range determined in a feature space represented by a combination of the plurality of parameters having values contained in the plurality of data frames.