Image processing apparatus, image processing method, and program

Patent metadata

Field	Value
Publication number	US-9585560-B2
Application number	US-201514742293-A
Country	US
Kind code	B2
Filing date	Jun 17, 2015
Priority date	Jun 18, 2014
Publication date	Mar 7, 2017
Grant date	Mar 7, 2017

Abstract

An image processing apparatus includes an information acquiring unit configured to acquire information indicating a shape of a plurality of regions in at least one layer in a tomographic image including a plurality of layers in an eye fundus of an eye to be examined and a determination unit configured to determine whether an anomaly is present in the plurality of regions based on the information indicating the shape.

First claim

What is claimed is:

1. An image processing apparatus comprising:
an image obtaining unit configured to obtain a tomographic image including a plurality of layers in an eye fundus of an eye to be examined;
an information acquiring unit configured to acquire information indicating a shape of a macula portion and an optic disk portion in at least one layer in the tomographic image; and
a determination unit configured to determine whether an anomaly is present in the macula portion and the optic disk portion based on the information indicating the shape.

2. The image processing apparatus according to claim 1 , wherein
the determination unit is configured to determine whether the anomaly is present in the macula portion and the optic disk portion by comparing the information indicating the shape with a normative database storing shapes of normal eye fundi.

3. The image processing apparatus according to claim 1 , further comprising:
a region detecting unit configured to detect at least one of the optic disk portion and the macula portion based on at least one of the tomographic image and an eye fundus image of the eye to be examined,
wherein the determination unit is configured to determine whether the anomaly is present in the detected optic disk portion and macula portion based on the information indicating the shape and to determine a type of a disease in the eye fundus based on the determination.

4. The image processing apparatus according to claim 1 , further comprising:
a display control unit configured to display a region where the presence of the anomaly is determined on a display unit such that the region is superimposed on an eye fundus image of the eye to be examined.

5. The image processing apparatus according to claim 4 , wherein
the display control unit is configured to display a display form indicating whether the anomaly is present in the macula portion and the optic disk portion on the display unit.

6. The image processing apparatus according to claim 4 , wherein the display control unit is configured to display the information indicating the shape on the display unit.

7. The image processing apparatus according to claim 1 , wherein
the determination unit is configured to determine a type of a disease in the eye fundus, the disease corresponding to a region where the presence of the anomaly is determined.

8. The image processing apparatus according to claim 1 , wherein
the determination unit is configured to determine a state of the anomaly, in a region where the presence of the anomaly is determined, based on the information indicating the shape and to determine a type of a disease in the eye fundus, the disease corresponding to the region where the presence of the anomaly is determined and corresponding to the state of the anomaly.

9. The image processing apparatus according to claim 1 , wherein
the information acquiring unit is configured to acquire at least one of a value of a curvature in the layer in the tomographic image and a value indicating a region from the layer to a reference line, as the information indicating the shape, and
the determination unit is configured to determine whether the anomaly is present in the macula portion and the optic disk portion by comparing the acquired value with a threshold.

10. The image processing apparatus according to claim 1 , further comprising:
a layer detecting unit configured to detect at least one of a Bruch layer and a retinal pigment epithelium (RPE) layer from the tomographic image,
wherein the information acquiring unit is configured to acquire the information indicating the shape based on the detected layer.

11. The image processing apparatus according to claim 1 , wherein
the image processing apparatus is connected to a tomographic imaging apparatus so as to be able to communicate therewith, and
the image obtaining unit is configured to obtain the tomographic image obtained by the tomographic imaging apparatus capturing an image of the eye fundus.

12. The image processing apparatus according to claim 11 , wherein
the tomographic imaging apparatus includes a selection unit configured to select any one of a plurality of imaging modes including a shape analysis imaging mode being an imaging mode at which the shape of the eye fundus is analyzed, and
the image obtaining unit is configured to obtain the tomographic image, the tomographic image being obtained by the tomographic imaging apparatus capturing the image and including the optic disk portion and the macula portion in the eye fundus, when the shape analysis imaging mode is selected.

13. An image processing method comprising:
a step of obtaining a tomographic image including a plurality of layers in an eye fundus of an eye to be examined;
a step of acquiring information indicating a shape of a macula portion and an optic disk portion in at least one layer in the tomographic image; and
a step of determining whether an anomaly is present in the macula portion and the optic disk portion based on the information indicating the shape.

14. The image processing method according to claim 13 , wherein
in the determining step, a type of a disease in the eye fundus, the disease corresponding to a region where the presence of the anomaly is determined.

15. The image processing method according to claim 13 , wherein
in the determining step, a state of the anomaly in a region where the presence of the anomaly is determined is determined based on the information indicating the shape, and a type of a disease in the eye fundus is determined, the disease corresponding to the region where the presence of the anomaly is determined and corresponding to the state of the anomaly.

16. The image processing method according to claim 13 , wherein
in the step of acquiring the information, at least one of a value of a curvature in the layer in the tomographic image and a value indicating a region from the layer to a reference line, as the information indicating the shape, and
in the determining step, it is determined whether the anomaly is present in the macula portion and the optic disk portion by comparing the acquired value with a threshold.

17. A storage medium enabling execution of the image processing method according to claim 13 .

18. An image processing apparatus comprising:
an image obtaining unit configured to obtain a tomographic image including a plurality of layers in an eye fundus of an eye to be examined;
an information acquiring unit configured to acquire information indicating a shape of at least one layer in the tomographic image; and
a determination unit configured to determine at least one type of a plurality of types corresponding to a region where an anomaly is present in the eye fundus.

19. An image processing method comprising:
a step of obtaining a tomographic image including a plurality of layers in an eye fundus of an eye to be examined;
a step of acquiring information indicating a shape of at least one layer in the tomographic image; and
a step of determining at least one type of a plurality of types corresponding to a region where an anomaly is present in the eye fundus.

20. A storage medium enabling execution of the image processing method according to claim 19 .

Assignees

• Canon Kk

Inventors

• Iwase Yoshihiko

Classifications

• G06T7/0012

  Biomedical image inspection · CPC title

• A61B3/1233 Primary

  for measuring blood flow, e.g. at the retina · CPC title

• A61B3/0058

  for multiple images · CPC title

• G06T2207/10101

  Optical tomography; Optical coherence tomography [OCT] · CPC title

• A61B3/0025

  characterised by electronic signal processing, e.g. eye models · CPC title