# US 2019/0318600 A1 · Monitoring assistance system, control method thereof, and program

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- Number: US 2019/0318600 A1
- Document ID: US20190318600A1
- Status: Published application
- Kind: A1
- Application number: 16/462,289
- Filed: 2017-11-28
- Published: 2019-10-17
- Earliest claimed: 2017-03-02
- Assignees: OMRON Corporation
- Applicants: Omron Corporation
- Inventors: Kiyoaki Tanaka; Jumpei Matsunaga; Shinji Takahashi; Tatsuya Murakami
- Web page: https://patentgrep.com/patent/US20190318600A1

## CPC

- G08B 21/02: Alarms for ensuring the safety of persons
- G06T 1/00: General purpose image data processing
- G06T 7/20: Analysis of motion (motion estimation for coding, decoding, compressing or decompressing digital video signals H04N19/43, H04N19/51)
- G06T 7/246: using feature-based methods, e.g. the tracking of corners or segments
- G06T 7/73: using feature-based methods
- G08B 25/006: {Alarm destination chosen according to type of event, e.g. in case of fire phone the fire service, in case of medical emergency phone the ambulance}
- G08B 25/04: using a single signalling line, e.g. in a closed loop
- A61G 7/012: raising or lowering of the whole mattress frame (A61G7/005, A61G7/008 take precedence)
- G06T 2207/10048: Infrared image
- G06T 2207/20021: Dividing image into blocks, subimages or windows
- G06T 2207/30196: Human being; Person
- G06T 2207/30232: Surveillance
- G08B: SIGNALLING SYSTEMS, e.g. PERSONAL CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G06T: IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- A61G: TRANSPORT, PERSONAL CONVEYANCES OR ACCOMMODATION SPECIALLY ADAPTED FOR PATIENTS OR DISABLED PERSONS (appliances for aiding patients or disabled persons to walk A61H3/00); OPERATING TABLES OR CHAIRS; CHAIRS FOR DENTISTRY; FUNERAL DEVICES (embalming corpses A01N1/00)

## Abstract

A watching assistance system that assists watching over a subject on a bed, the watching assistance system includes: a detector configured to detect a position of a predetermined region of the subject from the image captured by an imaging device; a determination unit configured to determine whether the subject raises oneself up based on the position at which the predetermined region of the subject is detected; and an output unit configured to provide notification when the determination unit determines that the subject raises oneself up. Based on a bed region in the image, a lying region is set to an existing range of a predetermined region at a lying time, and a raising-up region is set to an existing range of the predetermined region at a raising-up time. The lying region and the raising-up region are disposed at an interval. The determination unit determines that the subject raises oneself up when a condition that predetermined region of the subject is detected in the raising-up region after the predetermined region of the subject is detected in the lying region is satisfied.

## Claims

### Claim 1

A watching assistance system that assists watching over a subject on a bed, the watching assistance system comprising:
an image acquisition unit configured to acquire an image captured by an imaging device;
a detector configured to detect a position of a predetermined region of the subject from the image acquired by the image acquisition unit;
a determination unit configured to determine whether the subject raises oneself up based on the position at which the predetermined region of the subject is detected; and
an output unit configured to provide notification when the determination unit determines that the subject raises oneself up,
wherein based on a bed region in the image, a lying region is set to an existing range of a predetermined region at a lying time, and a raising-up region is set to an existing range of the predetermined region at a raising-up time,
the lying region and the raising-up region are disposed at an interval, and
the determination unit determines that the subject raises oneself up when a condition that predetermined region of the subject is detected in the raising-up region after the predetermined region of the subject is detected in the lying region is satisfied.

### Claim 2 (depends on 1)

The watching assistance system according to claim 1, further comprising:
a reclining detector configured to detect that a change in a reclining angle of the bed; and
a region setting unit configured to change settings of the lying region and the raising-up region according to the bed region after the change in the reclining angle when the reclining detector detects the change in the reclining angle.

### Claim 3 (depends on 2)

The watching assistance system according to claim 2, wherein the reclining detector determines the change in the reclining angle when movement of the predetermined region of the subject satisfies a predetermined condition.

### Claim 4 (depends on 2)

The watching assistance system according to claim 2, wherein the reclining detector determines the change in the reclining angle when a contour shape of the bed changes.

### Claim 5

A method for controlling a watching assistance system that assists watching over a subject on a bed, the watching assistance system control method comprising:
a step of acquiring an image captured by an imaging device;
a step of detecting a position of a predetermined region of the subject from the image acquired by the image acquisition unit;
a step of determining whether the subject raises oneself up based on the position at which the predetermined region of the subject is detected; and
a step of providing notification when the determination that the subject raises oneself up is made;
wherein based on a bed region in the image, a lying region is set to an existing range of a predetermined region at a lying time, and a raising-up region is set to an existing range of the predetermined region at a raising-up time,
the lying region and the raising-up region are disposed at an interval, and
in the determination step, the determination that the subject raises oneself up is made when a condition that predetermined region of the subject is detected in the raising-up region after the predetermined region of the subject is detected in the lying region is satisfied.

### Claim 6 (depends on 5)

A program causing a computer to perform each step of the watching assistance system control method according to claim 5.