Fundus imaging apparatus and method
AssigneeCanon Kabushiki Kaisha
InventorsTomoyuki Makihira, Kazuhide Miyata, Koji Nozato
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Abstract
In order to suppress a load on a subject when a fundus is irradiated with multiple beams, a fundus imaging apparatus for forming an image of a first area in the object, includes: a determination unit for determining a second area other than the first area in the object to be inspected; a detection unit for detecting moving of the object to be inspected on the basis of return light from the second area, which is irradiated with second light; a correction unit for correcting the first area on the basis of the detected moving; and a forming unit for forming an image of the object to be inspected on the basis of the return light from the corrected first area, which is irradiated with the first light.
Claims21
An imaging apparatus for imaging a first fundus image of a first area of an eye to be inspected in accordance with return light from the first area, which is irradiated with first light emitted from a first light source, the imaging apparatus comprising:
- a setting unit that sets the first area of the eye to be inspected;
- a determination unit that determines, in accordance with the first area, a prohibited area of acquisition of a second fundus image, wherein the prohibited area is an area which is not irradiated with second light emitted from a second light source when the first area is irradiated with the first light;
- a detection unit that detects moving of the eye to be inspected in accordance with the second fundus image, which is generated by using return light from a second area, other than the prohibited area which is not irradiated with the second light, the second area being irradiated with the second light;
- a correction unit that corrects the first area in accordance with the detected moving of the eye to be inspected;
- and
- a forming unit that forms a first fundus image of the eye to be inspected in accordance with the return light from the corrected first area, which is irradiated with the first light,
- wherein the second light source is different from the first light source,
- wherein the first light enters the eye to be inspected after the first area is set by the setting unit, and
- wherein the setting unit, the determination unit, the detection unit, the correction unit, and the forming unit are implemented using a processor executing a program.
An imaging method of imaging a first fundus image of a first area of an eye to be inspected in accordance with return light from the first area, which is irradiated with first light emitted from a first light source, the imaging method comprising:
- setting the first area of the eye to be inspected;
- determining, in accordance with the first area, a prohibited area of acquisition of a second fundus image, wherein the prohibited area is an area which is not irradiated with second light emitted from a second light source when the first area is irradiated with the first light, wherein the second light source is different from the first light source;
- detecting moving of the eye to be inspected in accordance with the second fundus image, which is generated by using return light from a second area, other than the prohibited area which is not irradiated with the second light, wherein the second area is irradiated with the second light, and wherein the first light enters the eye to be inspected after the first area is set in the setting step;
- correcting the first area in accordance with the detected moving;
- and
- forming a first fundus image of the eye to be inspected in accordance with the return light from the corrected first area, which is irradiated with the first light.
An imaging apparatus for detecting moving of an eye to be inspected, for correcting a first area of the eye to be inspected which is irradiated with first light in accordance with the detected moving, and for forming a first image of the eye to be inspected in accordance with return light from the corrected first area, the apparatus comprising:
- an imaging unit that acquires an image of the eye to be inspected having a wider angle than the first image;
- a determination unit that determines, in accordance with the first area, a prohibited area of acquisition of a second image, wherein the prohibited area is an area which is not irradiated with second light when the first area is irradiated with the first light;
- and
- a detecting unit that detects the moving of the eye to be inspected in accordance with (1) a second image, generated by using return light from a second area which is irradiated with the second light, that is acquired and (2) the wider-angle image, wherein the second area is an area other than the prohibited area from an entire area of the wider-angle image,
- wherein the determination unit and the detecting unit are implemented using a processor executing a program, and
- wherein the first area is corrected in accordance with the detected moving.
An imaging method of detecting moving of an eye to be inspected, of correcting a first area of the eye to be inspected which is irradiated with first light in accordance with the detected moving, and of forming a first image of the eye to be inspected in accordance with return light from the corrected first area, the method comprising:
- acquiring an image of the eye to be inspected having a wider angle than the first image;
- determining, in accordance with the first area, a prohibited area of acquisition of a second image, wherein the prohibited area is an area which is not irradiated with second light the first area is irradiated with the first light;
- and
- detecting the moving of the eye to be inspected in accordance with (1) a second image, generated by using return light from a second area which is irradiated with the second light, that is acquired and (2) the wider-angle image, wherein the second area is an area other than the prohibited area from the entire area of the wider-angle image,
- wherein the first area is corrected in accordance with the detected moving.
Dependencies are inferred from the claim text.