Fundus Observation Device, An Ophthalmologic Image Processing Unit, An Ophthalmologic Image Processing Program, And An Ophthalmologic Image Processing Method
First Claim
1. A fundus observation device comprising:
- a first image forming part configured to form a two-dimensional image of a surface of a fundus oculi of an eye based on optically obtained data;
a second image forming part configured to form tomographic images of said fundus oculi based on data obtained by optically scanning a region of the surface of said fundus oculi corresponding to at least part of said two-dimensional image;
an accumulated image generating part configured to generate an accumulated image by accumulating the formed tomographic images in a depth-wise direction;
an extracting part configured to extract a first vascular territory corresponding to a fundus oculi vessel from said two-dimensional image formed by said first image forming part, and also extract a second vascular territory corresponding to a fundus oculi vessel from said accumulated image generated by said accumulated image generating part; and
a specification part configured to specify a position of a vascular cross sectional region corresponding to a cross section of a fundus oculi vessel in the tomographic image based on said extracted first vascular territory and said extracted second vascular territory.
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Abstract
First image forming part forms a two-dimensional surface image of a fundus oculi of an eye based on optically obtained data. Second image forming part forms tomographic images of fundus oculi based on data obtained by optically scanning a region of the surface of fundus oculi corresponding to at least part of two-dimensional image. Accumulated image generating part generates an accumulated image by accumulating the formed tomographic images in a depth-wise direction. Extracting part extracts first vascular territory corresponding to a fundus oculi vessel from two-dimensional image formed by first image forming part, and also extracts second vascular territory corresponding to a fundus oculi vessel from accumulated image generated by accumulated image generating part. Specification part specifies a position of a vascular cross sectional region corresponding to a cross section of a fundus oculi vessel in the tomographic image based on extracted first vascular territory and extracted second vascular territory.
127 Citations
13 Claims
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1. A fundus observation device comprising:
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a first image forming part configured to form a two-dimensional image of a surface of a fundus oculi of an eye based on optically obtained data;
a second image forming part configured to form tomographic images of said fundus oculi based on data obtained by optically scanning a region of the surface of said fundus oculi corresponding to at least part of said two-dimensional image;
an accumulated image generating part configured to generate an accumulated image by accumulating the formed tomographic images in a depth-wise direction;
an extracting part configured to extract a first vascular territory corresponding to a fundus oculi vessel from said two-dimensional image formed by said first image forming part, and also extract a second vascular territory corresponding to a fundus oculi vessel from said accumulated image generated by said accumulated image generating part; and
a specification part configured to specify a position of a vascular cross sectional region corresponding to a cross section of a fundus oculi vessel in the tomographic image based on said extracted first vascular territory and said extracted second vascular territory. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. An opthalmologic image processing unit that is connected to a first image forming part configured to form a two-dimensional image of a surface of a fundus oculi of an eye and to a second image forming part configured to form a tomographic image in a region of the surface of said fundus oculi corresponding to at least part of said two-dimensional image, the opthalmologic image processing unit comprising:
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an accumulated image generating part configured to generate an accumulated image by accumulating the tomographic images formed by said second image forming part in a depth-wise direction;
an extracting part configured to extract a first vascular territory corresponding to a fundus oculi vessel from said two-dimensional image formed by said first image forming part, and extract a second vascular territory corresponding to a fundus oculi vessel from said accumulated image generated by said accumulated image generating part; and
a specification part configured to specify a position of a vascular cross sectional region corresponding to a cross section of a fundus oculi vessel in the tomographic image based on said extracted first vascular territory and said extracted second vascular territory.
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12. A computer readable medium having computer readable code embodied therein for causing a computer system to perform a predetermined process, the computer connected to a first image forming part configured to form a two-dimensional image of a surface of a fundus oculi of an eye and to a second image forming part configured to form a tomographic image in a region of a surface of said fundus oculi corresponding to at least part of said two-dimensional image, wherein the predetermined process comprising:
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generating an accumulated image by accumulating the tomographic images formed by said second image forming part in a depth-wise direction;
extracting a first vascular territory corresponding to a fundus oculi vessel from said two-dimensional image formed by said first image forming part, and extracting a second vascular territory corresponding to a fundus oculi vessel from said accumulated image; and
specifying a position of a vascular cross sectional region corresponding to a cross section of the fundus oculi vessel in the tomographic image based on said extracted first vascular territory and said extracted second vascular territory.
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13. An opthalmologic image processing method, comprising the steps of:
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forming a two-dimensional image of a surface of a fundus oculi of an eye;
forming a tomographic image based on data obtained by scanning a region of the surface of the fundus oculi corresponding to at least part of the two-dimensional image;
generating an accumulated image by accumulating the tomographic images in a depth-wise direction;
extracting a first vascular territory corresponding to the fundus oculi vessel from the two-dimensional image;
extracting a second vascular territory corresponding to the fundus oculi vessel from the accumulated image;
specifying a position of a cross sectional region corresponding to a cross section of the fundus oculi vessel in the tomographic image based on the first vascular territory and the second vascular territory.
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Specification