DRIVER CONDITION DETECTION SYSTEM

• US 20180225532A1
• Filed: 02/08/2018
• Published: 08/09/2018
• Est. Priority Date: 02/08/2017
• Status: Active Grant

• Current Assignee: Toyota Jidosha Kabushiki Kaisha (Toyota Motor Corporation)
• Original Assignee: Toyota Jidosha Kabushiki Kaisha (Toyota Motor Corporation)
• Inventors: Matsumura, Takeshi
• Granted Patent: US 10,769,460 B2
• Time in Patent Office: Days
• CPC Class Codes: B60W 40/08 related to drivers or passengers
• CPC Class Codes: G06V 20/597 Recognising the driver's state or behaviour, e.g. attention or drowsiness
• CPC Class Codes: G06V 40/171 Local features and components; Facial parts eye characteristics G06V40/18; Occluding parts, e.g. glasses; Geometrical relationships
• CPC Class Codes: G06V 40/172 Classification, e.g. identification
• CPC Class Codes: H01J 49/0086 Accelerator mass spectrometers
• CPC Class Codes: H01J 49/403 characterised by the acceleration optics and/or the extraction fields

Abstract

The driver condition detection system includes a driver monitor camera capturing a face of a driver of a vehicle and generating a facial image of the driver, and a driver condition detection part configured to detect a condition of the driver based on the facial image. If a part of face parts of the driver is hidden in the facial image, the driver condition detection part is configured to detect a condition of the driver based on face parts of the driver not hidden in the facial image. The face parts of the driver are a mouth, nose, right eye, and left eye of the driver.

Claims

1. A driver condition detection system comprising:

a driver monitor camera capturing a face of a driver of a vehicle and generating a facial image of the driver, and

a driver condition detection part configured to detect a condition of the driver based on the facial image, wherein

if a part of face parts of the driver is hidden in the facial image, the driver condition detection part is configured to detect a condition of the driver based on face parts of the driver not hidden in the facial image, the face parts of the driver being a mouth, nose, right eye, and left eye of the driver.

2. The driver condition detection system according to claim 1, wherein the condition of the driver is a facial direction of the driver.

3. The driver condition detection system according to claim 2, wherein if a part of the face parts of the driver is hidden in the facial image, the driver condition detection part is configured to detect the facial direction of the driver based on the face parts of the driver not hidden in the facial image and the facial image before a part of the face parts of the driver is hidden.

4. The driver condition detection system according to claim 3, wherein the driver condition detection part is configured to judge that the facial direction of the driver has not changed from before a part of the face parts of the driver was hidden if an amount of change of a condition of the face parts of the driver not hidden in the facial image is a threshold value or less, and not detect the facial direction of the driver if the amount of change is larger than the threshold value.

5. The driver condition detection system according to claim 3, wherein the driver condition detection part is configured to judge that the facial direction of the driver has not changed from before a part of the face parts of the driver was hidden if an amount of change of a position and size of the face parts of the driver not hidden in the facial image is a threshold value or less, and not detect the facial direction of the driver if the amount of change of at least one of the position and size is larger than the threshold value.

6. The driver condition detection system according to claim 2, wherein the driver condition detection part is configured to perform matching of the facial image and facial shape data to detect the facial direction of the driver.

7. The driver condition detection system according to claim 3, wherein the driver condition detection part is configured to perform matching of the facial image and facial shape data to detect the facial direction of the driver.

8. The driver condition detection system according to claim 4, wherein the driver condition detection part is configured to perform matching of the facial image and facial shape data to detect the facial direction of the driver.

9. The driver condition detection system according to claim 5, wherein the driver condition detection part is configured to perform matching of the facial image and facial shape data to detect the facial direction of the driver.

10. The driver condition detection system according to claim 6, wherein the driver condition detection part is configured to perform matching of face parts in the facial image and face parts in the facial shape data to detect the facial direction of the driver.

11. The driver condition detection system according to claim 7, wherein the driver condition detection part is configured to perform matching of face parts in the facial image and face parts in the facial shape data to detect the facial direction of the driver.

12. The driver condition detection system according to claim 8, wherein the driver condition detection part is configured to perform matching of face parts in the facial image and face parts in the facial shape data to detect the facial direction of the driver.

13. The driver condition detection system according to claim 9, wherein the driver condition detection part is configured to perform matching of face parts in the facial image and face parts in the facial shape data to detect the facial direction of the driver.

14. The driver condition detection system according to claim 10, wherein the driver condition detection part is configured not to perform matching of the face parts of the driver hidden in the facial image and face parts in the facial shape data if a part of the face parts of the driver is hidden in the facial image.

15. The driver condition detection system according to claim 11, wherein the driver condition detection part is configured not to perform matching of the face parts of the driver hidden in the facial image and face parts in the facial shape data if a part of the face parts of the driver is hidden in the facial image.

16. The driver condition detection system according to claim 12, wherein the driver condition detection part is configured not to perform matching of the face parts of the driver hidden in the facial image and face parts in the facial shape data if a part of the face parts of the driver is hidden in the facial image.

17. The driver condition detection system according to claim 13, wherein the driver condition detection part is configured not to perform matching of the face parts of the driver hidden in the facial image and face parts in the facial shape data if a part of the face parts of the driver is hidden in the facial image.