Calibration device, calibration method, drive recorder, vehicle, and storage medium

1. A calibration device for calibrating detection processing of a line of sight of a user, the calibration device comprising:

a determination unit configured to determine whether an eye of the user is detectable;

an instruction unit configured to instruct the user to look at each of a plurality of positions;

an acquisition unit configured to acquire, for each of the plurality of positions, an image of a face of the user looking at each position; and

a calibration unit configured to calibrate line-of-sight detection processing based on the image of the user's face,

wherein the calibration device can perform

first calibration processing in which the instruction unit gives an instruction to look at each of the plurality of positions by moving the face and the calibration unit calibrates the line-of-sight detection processing based on the image of the face of the user looking at an individual position according to the instruction, and

second calibration processing in which the instruction unit gives an instruction to look at each of the plurality of positions without moving the face and the calibration unit calibrates the line-of-sight detection processing based on the image of the face of the user looking at the individual position according to the instruction, and

the calibration device is configured to

execute both the first calibration processing and the second calibration processing when it is determined by the determination unit that an eye of the user can be detected, and

execute the first calibration processing and cease to execute the second calibration processing when it is determined by the determination unit that an eye of the user cannot be detected.

2. The calibration device according to claim 1 , wherein the determination unit is configured to determine that an eye of the user cannot be detected when the user wears sunglasses.

3. The calibration device according to claim 1 , wherein the plurality of positions include a corner of a windshield of a vehicle in which the user rides.

4. The calibration device according to claim 1 , wherein the instruction unit is configured to instruct the user to grasp a steering wheel before instructing the user to look at the plurality of positions.

5. A drive recorder that functions as the calibration device according to claim 1 .

6. A vehicle comprising a control device that functions as the calibration device according to claim 1 .

7. A non-transitory storage medium comprising a program for causing a computer to function as each unit of the calibration device according to claim 1 .

8. A method for calibrating detection processing of a line of sight of a user in a calibration device that can perform

first calibration processing in which an instruction to look at each of the plurality of positions by moving the face is given and the line-of-sight detection processing is calibrated based on an image of the face of the user looking at an individual position according to the instruction, and

second calibration processing in which an instruction to look at each of the plurality of positions without moving the face is given and the line-of-sight detection processing is calibrated based on the image of the face of the user looking at the individual position according to the instruction, the method comprising:

determining whether an eye of the user is detectable;

executing both the first calibration processing and the second calibration processing when it is determined that an eye of the user can be detected, and

executing the first calibration processing and cease to execute the second calibration processing when it is determined that an eye of the user cannot be detected.