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US 10,299,675 B2Granted
Image processing apparatus, image processing method, and optical coherence tomography apparatus
AssigneeCanon Kabushiki Kaisha
InventorsHiroki Uchida, Yukio Sakagawa, Krzysztof Piotrowski
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Abstract
An image processing apparatus converts an intensity distribution of at least one of a plurality of regions of a tomographic image of an eye by using an amount of conversion which is greater than an amount of conversion used to convert an intensity distribution of another one of the plurality of regions, the tomographic image being obtained by performing tomographic imaging on the eye by using optical interference.
Claims25
An ophthalmologic apparatus comprising:
- a first detection unit configured to detect interference light obtained by interference between returning light from an eye irradiated with measurement light and reference light corresponding to the measurement light;
- a tomographic image obtaining unit configured to obtain a tomographic image of an anterior eye portion of the eye by using the detected interference light;
- a region division unit configured to divide the tomographic image of the anterior eye portion into at least three regions including an air region, an iridocorneal angle region, and a region other than the air region and the iridocorneal angle region;
- and
- a processing unit configured to convert an intensity distribution of the iridocorneal angle region by using an amount of conversion greater than an amount of conversion used to convert an intensity distribution of the region other than the air region and the iridocorneal angle region.
2 more elements
An ophthalmologic apparatus comprising:
- a first detection unit configured to detect interference light obtained by interference between returning light from an eye irradiated with measurement light and reference light corresponding to the measurement light;
- a tomographic image obtaining unit configured to obtain a tomographic image of an eye fundus of the eye by using the detected interference light;
- a second detection unit configured to detect at least one layer boundary in the tomographic image;
- a region division unit configured to divide the tomographic image of the eye fundus into at least two regions including a retina region and a choroid region by using the detected at least one layer boundary;
- and
- a processing unit configured to convert an intensity distribution of the choroid region by using an amount of conversion greater than an amount of conversion used to convert an intensity distribution of the retina region.
3 more elements
An ophthalmologic apparatus comprising:
- a first detection unit configured to detect interference light obtained by interference between returning light from an eye irradiated with measurement light and reference light corresponding to the measurement light;
- a tomographic image obtaining unit configured to obtain tomographic image data of the eye with resolution higher than display resolution of a display unit by using the detected interference light;
- and
- a processing unit configured to convert an intensity distribution of the tomographic image data and convert tomographic image data obtained by converting the intensity distribution of the tomographic image data into tomographic image data with the display resolution.
1 more element
A control method for controlling an ophthalmologic apparatus, comprising:
- dividing a tomographic image of an anterior eye portion of an eye into at least three regions including an air region, an iridocorneal angle region, and a region other than the air region and the iridocorneal angle region, the tomographic image being obtained by using interference light, the interference light being detected by interference between returning light from the eye irradiated with measurement light and reference light corresponding to the measurement light;
- and
- converting an intensity distribution of the iridocorneal angle region by using an amount of conversion greater than an amount of conversion used to convert an intensity distribution of the region other than the air region and the iridocorneal angle region.
A control method for controlling an ophthalmologic apparatus, comprising:
- detecting at least one layer boundary in a tomographic image of an eye fundus of an eye, the tomographic image being obtained by using interference light, the interference light being detected by interference between returning light from the eye irradiated with measurement light and reference light corresponding to the measurement light;
- dividing the tomographic image of the eye fundus into at least two regions including a retina region and a choroid region by using the detected at least one layer boundary;
- and
- converting an intensity distribution of the choroid region by using an amount of conversion greater than an amount of conversion used to convert an intensity distribution of the retina region.
1 more element
A control method for controlling an ophthalmologic apparatus, comprising:
- obtaining tomographic image data of an eye with resolution higher than display resolution of a display unit by using interference light the interference light being detected by interference between returning light from the eye irradiated with measurement light and reference light corresponding to the measurement light;
- and
- converting an intensity distribution of the tomographic image data and convert tomographic image data obtained by converting the intensity distribution of the tomographic image data into tomographic image data with the display resolution.
Dependencies are inferred from the claim text.