US 12,333,852 B2
Face detection device
Kazuki Kunihiro, Tokyo (JP); and Taro Kumagai, Tokyo (JP)
Assigned to MITSUBISHI ELECTRIC CORPORATION, Tokyo (JP)
Appl. No. 17/793,744
Filed by Mitsubishi Electric Corporation, Tokyo (JP)
PCT Filed Mar. 24, 2020, PCT No. PCT/JP2020/012916
§ 371(c)(1), (2) Date Jul. 19, 2022,
PCT Pub. No. WO2021/192007, PCT Pub. Date Sep. 30, 2021.
Prior Publication US 2023/0060049 A1, Feb. 23, 2023
Int. Cl. G06V 40/16 (2022.01); G06V 20/59 (2022.01)
CPC G06V 40/161 (2022.01) [G06V 20/59 (2022.01); G06V 40/168 (2022.01)] 11 Claims
OG exemplary drawing
 
1. A face detection device, comprising:
processing circuitry configured to
acquire, from an imaging device mounted on a vehicle and imaging an at least one occupant inside the vehicle, a captured image in which the at least one occupant is imaged;
set a search area in which a face of the at least one occupant is searched in the acquired captured image;
search the search area and detect the face of the at least one occupant; and
determine whether or not the detection of the face of the at least one occupant has succeeded, wherein
the processing circuitry expands the search area when determining that the detection of the face of the at least one occupant has failed,
the processing circuitry determines whether or not a first number of detection failures in which the detection of the face of the at least one occupant is determined to be failure is equal to or less than a first threshold, and
the processing circuitry
expands the search area when determining that the first number of detection failures is equal to or less than the first threshold, and
maintains or changes the search area when determining that the first number of detection failures exceeds the first threshold.