Ophthalmologic image processing apparatus

Patent metadata

Field	Value
Publication number	US-9386920-B2
Application number	US-201414499557-A
Country	US
Kind code	B2
Filing date	Sep 29, 2014
Priority date	Sep 30, 2013
Publication date	Jul 12, 2016
Grant date	Jul 12, 2016

Abstract

An ophthalmic image processing apparatus includes: a storage unit configured to store a fundus image and a first partial image, the first partial image being a partial image photographed for a part of the fundus image and having a higher resolution than the fundus image; and a display control unit configured to combine the first partial image with respect to an image region on the fundus image corresponding to the first partial image, and to display a combined image of the fundus image and the first partial image on a display medium.

First claim

What is claimed is:

1. An ophthalmic image processing apparatus comprising:
a storage unit configured to store a fundus image and a first partial image, the first partial image being a partial image photographed for a part of the fundus image and having a higher resolution than the fundus image; and
a display control unit configured to combine the first partial image with respect to an image region on the fundus image corresponding to the first partial image, and to display a combined image of the fundus image and the first partial image on a display medium;
a photographing optical system configured to photograph the fundus by projecting light to the fundus of the examinee's eye and receiving light from the fundus as a result of the light projection using a light receiving device, the photographing optical system being configured to photograph the fundus image and the first partial image by setting a photographing view angle of the photographing optical system using a photographing view angle adjustment mechanism;
wherein:
the display medium is a display; and
the display control unit displays one of the fundus image and the first partial image that corresponds to the optical magnification set by the photographing view angle adjustment mechanism as a live image.

2. The ophthalmic image processing apparatus according to claim 1 , wherein:
the display control unit is configured to display a part or whole of the combined image at a first display magnification ratio and a second display magnification ratio greater than the first display magnification ratio; and
the display control unit, when a first partial image region where the first partial image is combined in the combined image is displayed at the second display magnification ratio, displays the combined image at a higher resolution than when a peripheral region where the first partial image is not combined in the combined image is displayed at the second display magnification ratio.

3. The ophthalmic image processing apparatus according to claim 1 , wherein the display control unit displays the combined image and an enlarged image of the first partial image side by side on the display medium.

4. The ophthalmic image processing apparatus according to claim 1 , wherein the display control unit further matches an image region of the fundus image corresponding to the first partial image with the first partial image by image processing, and corrects displacement between the images.

5. The ophthalmic image processing apparatus according to claim 4 , wherein the display control unit adjusts an enlarging/reducing magnification ratio of the fundus image and the first partial image such that a size of an image region of the fundus image corresponding to the first partial image corresponds to a size of the first partial image, and then generates the combined image by the image processing.

6. The ophthalmic image processing apparatus according to claim 1 , wherein the display control unit combines the other image of the fundus image and the first partial image that is acquired in advance at a photographing view angle different from the photographing view angle set by the photographing view angle adjustment mechanism with the live image of the one image, and displays the combined image.

7. The ophthalmic image processing apparatus according to claim 1 , wherein at least one of the fundus image and the first partial image is a fluorescence image photographed using fluorescence from the fundus.

8. An ophthalmic image processing apparatus comprising:
a photographing optical system configured to photograph a fundus image by projecting light to the fundus of an examinee's eye and receiving light from the fundus as a result of the light projection using a light receiving device; and
a display control unit configured to generate the fundus image and a second image that is a partial image extracted from the fundus image, based on a light receiving signal from the light receiving device, and to display a first live image including a plurality of continuous fundus images and a second live image including a plurality of continuous second partial images side by side on a display medium.

9. The ophthalmic image processing apparatus according to claim 8 , wherein the display control unit displays the second live image enlarged larger than a region corresponding to the partial image of the fundus image in the first live image.

10. The ophthalmic image processing apparatus according to claim 8 , wherein the display control unit displays a range determined by an instruction from an examiner in the fundus image as the second image.

11. The ophthalmic image processing apparatus according to claim 8 , wherein the display control unit performs a discriminating display of a region corresponding to the partial image of the fundus image extracted as the second image and another region on the first live image.

12. The ophthalmic image processing apparatus according to claim 8 , wherein the fundus image is a front fundus image.

13. The ophthalmic image processing apparatus according to claim 12 , wherein the front fundus image is a scanning laser ophthalmoscope image.

14. The ophthalmic image processing apparatus according to claim 8 , wherein a photographing view angle of the fundus image is smaller than a photographing view angle of the second image.

15. An ophthalmic image processing apparatus comprising:
a photographing optical system configured to photograph a fundus image by projecting light to the fundus of an examinee's eye and receiving light from the fundus as a result of the light projection using a light receiving device; and
a display control unit configured to display the fundus image photographed using the photographing optical system and a second image photographed for a range of interest included in the fundus image on a display medium, the second image being a partial image of the fundus image, and to display at least one of the fundus image and the second partial image as a live image.

16. The ophthalmic image processing apparatus according to claim 15 , wherein the fundus image is a front fundus image.

17. The ophthalmic image processing apparatus according to claim 16 , wherein the front fundus image is a scanning laser ophthalmoscope image.

18. The ophthalmic image processing apparatus according to claim 15 , wherein a photographing view angle of the fundus image is smaller than a photographing view angle of the second image.

19. The ophthalmic image processing apparatus according to claim 15 , wherein each of the fundus image and the second image is generated based on a light receiving signal from the light receiving device of the photographing optical system.

Assignees

• Nidek Kk

Inventors

• Akita Junichi

Classifications

• A61B3/14

  Arrangements specially adapted for eye photography · CPC title

• A61B3/12

  for looking at the eye fundus, e.g. ophthalmoscopes (A61B3/13 takes precedence) · CPC title

• A61B3/0058 Primary

  for multiple images · CPC title

• A61B3/0025 Primary

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