METHOD AND APPARATUS FOR RECOGNISING MICROSLEEP IN A DRIVER OF A VEHICLE
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Abstract
A method for recognizing microsleep on the part of a driver of a vehicle. The method includes at least a step of reading in an eye closure information item regarding an eye parameter of the driver, the eye closure information item representing a first eyelid position for a maximum eye opening level, and/or a second eyelid position for a minimum eye opening level, for the driver; a step of classifying a current eyelid position of an eyelid of the driver using the eye closure information item, in order to obtain an eye opening information item that represents an open state of the eyes or a closed state of the eyes; and a step of ascertaining a sleep recognition value that represents an indication of an occurrence of microsleep.
15 Citations
22 Claims
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1-12. -12. (canceled)
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13. A method for recognizing microsleep on the part of a driver of a vehicle, the method comprising:
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reading in an eye closure information item regarding an eye parameter of the driver, the eye closure information item representing at least one of a first eyelid position for a maximum eye opening level, and a second eyelid position for a minimum eye opening level, for the driver; classifying a current eyelid position of an eyelid of the driver using the eye closure information item to obtain an eye opening information item that represents an open state of the eyes or a closed state of the eyes; and ascertaining a risk potential value that represents a risk of an occurrence of microsleep, the risk potential value being ascertained using at least one of the current eyelid position and the eye opening information item, microsleep being recognized if the risk potential value exceeds a threshold value at least during a predetermined time period; wherein before the reading in step, the driver is identified in an identifying step, and the eye closure information item is furnished from a database using an information item regarding the identified driver. - View Dependent Claims (15, 16, 17, 18, 19, 20)
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14. A method for recognizing microsleep on the part of a driver of a vehicle, the method comprising:
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reading in an eye movement information item regarding an eye parameter of the driver, the eye movement information item representing an information item regarding an eye movement of the eyes of the driver; and ascertaining a risk potential value that represents risk of an occurrence of microsleep, the risk potential value being ascertained using at least one of an eye opening speed derived from the eye movement information item, and a gaze direction of the driver derived from the eye movement information item, microsleep being recognized if the risk potential value exceeds a threshold value at least during a predetermined time period.
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21. An apparatus for recognizing microsleep on the part of a driver of a vehicle, the apparatus designed to:
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read in an eye closure information item regarding an eye parameter of the driver, the eye closure information item representing at least one of a first eyelid position for a maximum eye opening level, and a second eyelid position for a minimum eye opening level, for the driver; classify a current eyelid position of an eyelid of the driver using the eye closure information item to obtain an eye opening information item that represents an open state of the eyes or a closed state of the eyes; ascertain a risk potential value that represents a risk of an occurrence of microsleep, the risk potential value being ascertained using at least one of the current eyelid position and the eye opening information item, microsleep being recognized if the risk potential value exceeds a threshold value at least during a predetermined time period; and before the reading in, identify the driver, the eye closure information item being furnished from a database using an information item regarding the identified driver.
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22. A non-transitory machine-readable memory medium on which is stored a computer program for recognizing microsleep on the part of a driver of a vehicle, the computer program, when executed by a computer, causing the computer to perform:
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reading in an eye closure information item regarding an eye parameter of the driver, the eye closure information item representing at least one of a first eyelid position for a maximum eye opening level, and a second eyelid position for a minimum eye opening level, for the driver; classifying a current eyelid position of an eyelid of the driver using the eye closure information item to obtain an eye opening information item that represents an open state of the eyes or a closed state of the eyes; and ascertaining a risk potential value that represents a risk of an occurrence of microsleep, the risk potential value being ascertained using at least one of the current eyelid position and the eye opening information item, microsleep being recognized if the risk potential value exceeds a threshold value at least during a predetermined time period; wherein before the reading in step, the driver is identified in an identifying step, and the eye closure information item is furnished from a database using an information item regarding the identified driver.
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Specification