# US 10,117,569 B2 · Diagnosis supporting device and diagnosis supporting method

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- Number: US 10,117,569 B2
- Document ID: US10117569B2
- Status: Granted
- Kind: B2
- Application number: 14/844,934
- Filed: 2015-09-03
- Published: 2015-12-31
- Granted: 2018-11-06
- Earliest claimed: 2013-03-07
- Assignees: JVC KENWOOD Corporation
- Applicants: Jvc Kenwood Corporation
- Inventors: Katsuyuki Shudo; Masaru Ninomiya; Shuji Hakoshima
- Web page: https://patentgrep.com/patent/US10117569B2

## CPC

- A61B 3/0058: {for multiple images}
- A61B 3/0025: {characterised by electronic signal processing, e.g. eye models}
- A61B 3/113: for determining or recording eye movement
- A61B 5/163: {by tracking eye movement, gaze, or pupil change}
- A61B 5/168: {Evaluating attention deficit, hyperactivity}
- A61B 5/4088: {Diagnosing of monitoring cognitive diseases, e.g. Alzheimer, prion diseases or dementia}
- A61B: DIAGNOSIS; SURGERY; IDENTIFICATION (usefulness limited to only animals A61D)

## Abstract

A diagnosis supporting device includes an imaging unit that images a subject, an eye gaze detector that detects an eye gaze direction of the subject from an image captured by the imaging unit, a gaze point detector that detects a gaze point of the subject in a display area of a display on the basis of the eye gaze direction, and an output controller that causes the display area to display a diagnostic image composed by superposing a pattern image onto a natural image.

## Claims

### Claim 1

A diagnosis supporting device comprising:
an imaging unit that images a subject;
an eye gaze detector that detects an eye gaze direction of the subject from an image imaged by the imaging unit;
a gaze point detector that detects a gaze point of the subject in a display area of a display on the basis of the eye gaze direction; and
an output controller that causes the display area to display a diagnostic image composed by superposing a pattern image including a geometric pattern onto a part of a natural image in which most of the display area is occupied by a person, an animal, or a plant, wherein
at least one of hue, brightness, and chroma in the pattern image is similar to or matches hue, brightness, and chroma in a part adjacent to or slightly away from the part of the natural image.

### Claim 2 (depends on 1)

The diagnosis supporting device according to claim 1,
wherein the output controller causes the display to display a first diagnostic image and then a second diagnostic image in which a position of a pattern image is different from a position of a pattern image in the first diagnostic image, and
the gaze point detector detects a gaze point of the subject when the first diagnostic image and the second diagnostic image are displayed.

### Claim 3 (depends on 2)

The diagnosis supporting device according to claim 2,
wherein an area of the pattern image in the first diagnostic image and an area of the pattern image in the second diagnostic image are symmetrical about a center of the display area.

### Claim 4 (depends on 1)

The diagnosis supporting device according to claim 1,
wherein the pattern image is continuous with an object adjacent to the part of the natural image.

### Claim 5 (depends on 1)

The diagnosis supporting device according to claim 1,
wherein the pattern image changes on the basis of a motion speed of the object included in the natural image.

### Claim 6 (depends on 1)

The diagnosis supporting device according to claim 1, further comprising
an evaluator determining which of the natural image and the pattern image is gazed at.

### Claim 7 (depends on 1)

The diagnosis supporting device according to claim 1, further comprising:
an illuminator which includes a light source radiating light;
a first calculator that calculates a first position indicating a center of a pupil from an image of an eyeball of a subject, the image being captured by the imaging unit while the light being irradiated by the illuminator;
a second calculator that calculates a second position indicating a center of corneal reflection from the image of the eyeball being captured; and
a third calculator that calculates a third position indicating a corneal curvature center on the basis of a straight line connecting the light source and the second position,
wherein the eye gaze detector detects an eye gaze of the subject on the basis of the first position and the third position.

### Claim 8

A diagnosis supporting method comprising:
detecting an eye gaze direction of a subject from an image captured by an imaging unit imaging the subject;
detecting a gaze point of the subject in a display area of a display on the basis of the eye gaze direction; and
causing the display area to display a diagnostic image composed by superposing a pattern image including a geometric pattern onto a part of a natural image in which most of the display area is occupied by a person, an animal, or a plant, wherein
at least one of hue, brightness, and chroma in the pattern image is similar to or matches hue, brightness, and chroma in a part adjacent to or slightly away from the part of the natural image.