Driver condition estimating device, driver condition estimating method and computer program therefor
AssigneeMazda Motor Corporation
InventorsTaro IWAMOTO, Yohei IWASHITA, Makoto YOSHIDA
Life of this patent
Estimating the term…
Abstract
A driver condition estimating device includes circuitry configured to measure movement of the head of a driver from output of a driver camera and detect a sign of abnormality of the driver from the movement of the head. The circuitry is configured to calculate a periodic feature amount from time series data showing the movement of the head of the driver, calculate a time series variation pattern from the obtained periodic feature amount, and compare the obtained time series variation pattern with a predetermined threshold to determine existence of the sign of abnormality of the driver.
Claims18
A driver condition estimating device configured to estimate condition of a driver who is driving a vehicle, the driver condition estimating device comprising:
- circuitry configured to:
- measure movement of a head of the driver from an output of a camera that photographs the driver;
- detect a sign of abnormality of the driver from the movement of the head;
- calculate a periodic feature amount from time series data showing the movement of the head of the driver;
- calculate a time series variation pattern from the calculated periodic feature amount;
- and
- compare the calculated time series variation pattern with a predetermined threshold to determine existence of the sign of abnormality of the driver.
A driver condition estimating method for estimating condition of a driver who is driving a vehicle, the driver condition estimating method comprising:
- calculating a periodic feature amount from time series data showing movement of a head of the driver;
- calculating a time series variation pattern from the calculated periodic feature amount;
- and
- comparing the calculated time series variation pattern with a predetermined threshold to determine existence of a sign of abnormality of the driver.
A non-transitory computer readable storage including computer readable instructions that when executed by a controller cause the controller to execute a driver state determination method for a driver in a vehicle, the method comprising:
- calculating a periodic feature amount from time series data showing movement of a head of the driver;
- calculating a time series variation pattern from the calculated periodic feature amount;
- and
- comparing the calculated time series variation pattern with a predetermined threshold to determine existence of a sign of abnormality of the driver.
Dependencies are inferred from the claim text.