Title:
DROWSINESS ESTIMATION DEVICE AND DROWSINESS ESTIMATION METHOD
Document Type and Number:
WIPO Patent Application WO/2024/047856
Kind Code:
A1
Abstract:
The present invention provides a drowsiness estimation device comprising: a drowsiness score calculation unit (15) that uses a trained machine learning model to calculate a drowsiness score indicating a degree of drowsiness of an occupant of a vehicle on the basis of a captured image of the face of the occupant; an excessive detection factor reliability calculation unit (16) that determines whether an excessive detection factor affecting the calculation of the drowsiness score is present on the basis of the image, and, upon determining that the excessive detection factor exists, calculates, on the basis of a rule, an excessive detection factor indicator indicating the existence of the excessive detection factor and reliability of the excessive detection factor indicator; and a state transition determination unit (17) that determines, on the basis of the calculated drowsiness score, the calculated excessive detection factor indicator, and the calculated reliability of the excessive detection factor indicator, a drowsiness state of the occupant from a plurality of drowsiness states including a first drowsiness state in which the degree of drowsiness is low and a second drowsiness state in which the degree of drowsiness is higher than that in the first drowsiness state.
Inventors:
OKAMOTO YUMIKO (JP)
TAHARA NATSUKI (JP)
NAKAMURA YUDAI (JP)
TAHARA NATSUKI (JP)
NAKAMURA YUDAI (JP)
Application Number:
PCT/JP2022/033046
Publication Date:
March 07, 2024
Filing Date:
September 02, 2022
Export Citation:
Assignee:
MITSUBISHI ELECTRIC CORP (JP)
International Classes:
G08G1/16
Foreign References:
| JP2011152218A | 2011-08-11 | |||
| JP2019068933A | 2019-05-09 | |||
| JP2010029537A | 2010-02-12 | |||
| JP2019087170A | 2019-06-06 | |||
| JP2013156707A | 2013-08-15 |
Attorney, Agent or Firm:
SANNO PATENT ATTORNEYS OFFICE (JP)
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