# US 2019/0318183 A1 · Method and device for estimating a direction of a view of a vehicle occupant, method and device for determining a head movement gain parameter specific for a vehicle occupant, and method and device for estimating the direction of view of a vehicle occupant

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- Number: US 2019/0318183 A1
- Document ID: US20190318183A1
- Status: Published application
- Kind: A1
- Application number: 16/452,626
- Filed: 2019-06-26
- Published: 2019-10-17
- Earliest claimed: 2015-07-27
- Assignees: Robert Bosch GmbH
- Applicants: Robert Bosch GmbH
- Inventors: Hans-Joachim Bieg
- Web page: https://patentgrep.com/patent/US20190318183A1

## CPC

- G06V 20/597: {Recognising the driver's state or behaviour, e.g. attention or drowsiness}
- B60W 40/08: related to drivers or passengers
- G06F 3/012: {Head tracking input arrangements}
- G06F 3/013: {Eye tracking input arrangements (G06F3/015 takes precedence)}
- G06V 40/18: Eye characteristics, e.g. of the iris
- B60W 2420/403: Image sensing, e.g. optical camera
- G06T 2207/30201: Face
- G06T 2207/30268: Vehicle interior
- G06V: IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
- B60W: CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- G06F: ELECTRIC DIGITAL DATA PROCESSING (computer systems based on specific computational models G06N)
- G06T: IMAGE DATA PROCESSING OR GENERATION, IN GENERAL

## Abstract

A method for estimating a direction of view of an occupant of a vehicle. The method includes a step of ascertaining a head fixation position of the head of the vehicle occupant, terminating a current head movement of the head, using sensor data concerning an angular speed of the current head movement, and a step of combining the head fixation position and a head movement gain parameter in order to estimate the direction of view of the vehicle occupant, the head movement gain parameter being a function of a specific human head movement pattern during a visual fixing of an object.

## Claims

### Claim 1

A method for estimating a direction of view of an occupant of a vehicle, the method including the following steps:
ascertaining a head fixation position of a head of the vehicle occupant, which terminates a current head movement of the head, using sensor data concerning an angular speed of the current head movement; and
combining the head fixation position and a head movement gain parameter to estimate the direction of view of the vehicle occupant, the head movement gain parameter being a function of a head movement pattern individual for a vehicle occupant during a visual fixing of an object.

### Claim 2 (depends on 1)

The method as recited in claim 1, wherein in the ascertaining step, the sensor data represent an angular speed during travel through an angle between a rest position of the head and the head fixation position of the head.

### Claim 3 (depends on 1)

The method as recited in claim 1, further comprising”
selection of the head movement gain parameter from a multiplicity of head movement gain parameters as a function of an angular size of the current head movement.

### Claim 4 (depends on 1)

The method as recited in claim 1, further comprising:
reading in the sensor data concerning an angular speed of a current head movement of the vehicle occupant via an interface from an optical sensor of the vehicle.

### Claim 5

A device configured to estimate a direction of view of an occupant of a vehicle, the device configured to:
ascertain a head fixation position of a head of the vehicle occupant, which terminates a current head movement of the head, using sensor data concerning an angular speed of the current head movement; and
combine the head fixation position and a head movement gain parameter to estimate the direction of view of the vehicle occupant, the head movement gain parameter being a function of a head movement pattern individual for a vehicle occupant during a visual fixing of an object.

### Claim 6

A non-transitory machine-readable storage medium on which a computer program is stored, the computer program for estimating a direction of view of an occupant of a vehicle, the computer program, when executed by a processor, causing the processor to perform:
ascertaining a head fixation position of a head of the vehicle occupant, which terminates a current head movement of the head, using sensor data concerning an angular speed of the current head movement; and
combining the head fixation position and a head movement gain parameter to estimate the direction of view of the vehicle occupant, the head movement gain parameter being a function of a head movement pattern individual for a vehicle occupant during a visual fixing of an object.