Indoor monitoring device

Patent metadata

Field	Value
Publication number	US-11127152-B2
Application number	US-201916578574-A
Country	US
Kind code	B2
Filing date	Sep 23, 2019
Priority date	Sep 26, 2018
Publication date	Sep 21, 2021
Grant date	Sep 21, 2021

Abstract

An indoor monitoring device includes: an image obtainment unit obtaining a captured image obtained by imaging an inside of a cabin of a vehicle by an imaging unit; and a position detection unit determining whether or not an occupant's head is present in the captured image, detecting a size of the head, a head position of the head, and a key point position of a key point other than the head of the occupant in the captured image in a case where the head is present in the captured image, and detecting a seating position of the occupant in the cabin based on the size of the head, the head position, and the key point position.

First claim

What is claimed is:

1. An indoor monitoring device comprising:
an image obtainment unit obtaining a captured image obtained by imaging an inside of a cabin of a vehicle by an imaging unit; and
a position detection unit determining whether or not an occupant's head is present in the captured image, detecting a size of the head, a head position of the head, and a key point position of a key point other than the head of the occupant in the captured image in a case where the head is present in the captured image, and detecting a seating position of the occupant in the cabin based on the size of the head, the head position, and the key point position, wherein
the position detection unit sets, with respect to the captured image, a determination region corresponding to candidates for the seating position, determines whether or not the head is present in the determination region, and in a case where the head is present in the determination region, selects a candidate for the seating position of the occupant having the head from the candidates for the seating position corresponding to the determination region based on the size of the head, the head position, and the key point position and detects the selected candidate for the seating position as the seating position.

2. The indoor monitoring device according to claim 1 , wherein
the position detection unit detects the seating position of the occupant in the cabin in a front-rear direction based on the size of the head and the presence or absence of the key point.

3. The indoor monitoring device according to claim 1 , further comprising
a determination unit determining, in a case where a seat belt worn by the occupant whose seating position has been detected is detected from the captured image, the detected seating position as the occupant's seating position until the occupant alights.

4. The indoor monitoring device according to claim 1 , wherein
the position detection unit detects the seating position of the occupant in the cabin in a left-right direction based on the head position and the key point position.

5. The indoor monitoring device according to claim 4 , wherein
the position detection unit detects the seating position of the occupant in the cabin in a front-rear direction based on the size of the head and the presence or absence of the key point.

6. The indoor monitoring device according to claim 4 , further comprising
a determination unit determining, in a case where a seat belt worn by the occupant whose seating position has been detected is detected from the captured image, the detected seating position as the occupant's seating position until the occupant alights.

7. The indoor monitoring device according to claim 4 , wherein
the position detection unit further detects a front-rear-direction seat position of a seat on which the occupant is seated based on the size of the head of the occupant whose seating position has been detected.

8. The indoor monitoring device according to claim 4 , wherein
the position detection unit further detects an occupant's posture based on the size of the head of the occupant whose seating position has been detected.

9. The indoor monitoring device comprising:
an image obtainment unit obtaining a captured image obtained by imaging an inside of a cabin of a vehicle by an imaging unit; and
a position detection unit determining whether or not an occupant's head is present in the captured image, detecting a size of the head, a head position of the head, and a key point position of a key point other than the head of the occupant in the captured image in a case where the head is present in the captured image, and detecting a seating position of the occupant in the cabin based on the size of the head, the head position, and the key point position, wherein
the position detection unit further detects a front-rear-direction seat position of a seat on which the occupant is seated based on the size of the head of the occupant whose seating position has been detected.

10. An indoor monitoring device comprising:
an image obtainment unit obtaining a captured image obtained by imaging an inside of a cabin of a vehicle by an imaging unit; and
a position detection unit determining whether or not an occupant's head is present in the captured image, detecting a size of the head, a head position of the head, and a key point position of a key point other than the head of the occupant in the captured image in a case where the head is present in the captured image, and detecting a seating position of the occupant in the cabin based on the size of the head, the head position, and the key point position, wherein
the position detection unit further detects an occupant's posture based on the size of the head of the occupant whose seating position has been detected.

Assignees

• Aisin Seiki

Inventors

• Fujii Hiroyuki
• Tanaka Godai
• Tomatsu Yoshiaki

Classifications

• G06V40/164 Primary

  using holistic features · CPC title

• G06V20/593

  Recognising seat occupancy · CPC title

• G06T2207/30196

  Human being; Person · CPC title

• G06T2207/30268

  Vehicle interior · CPC title

• G06T7/60

  Analysis of geometric attributes · CPC title