Optical coherence tomographic imaging apparatus and method of controlling the same
AssigneeCanon Kabushiki Kaisha
InventorsYasuhiro Nakahara, Manabu Wada, Hiroki Uchida
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Abstract
An optical coherence tomographic imaging apparatus includes a movement amount acquisition unit configured to acquire an amount of rotation of a subject's eye based on a plurality of images of the subject's eye acquired at different times, and a control unit configured to control a scanning unit to correct, based on the acquired amount of rotation, a scanning position between a scan and a next scan performed by the scanning unit.
Claims20
An optical coherence tomographic imaging apparatus comprising:
- an image acquisition unit configured to acquire a plurality of images of a subject's eye at different times;
- a tomographic image acquisition unit configured to acquire a plurality of tomographic images of the subject's eye based on interference light obtained by causing light reflected from the subject's eye irradiated with measurement light through a scanning unit, to interfere with reference light corresponding to the measurement light;
- a movement amount acquisition unit configured to acquire at least an amount of rotation of the subject's eye among amounts of movement of the subject's eye based on the plurality of images;
- and
- a control unit configured to control the scanning unit to correct, based on the acquired amount of rotation, a scanning position between a scan and a next scan performed by the scanning unit.
An optical coherence tomographic imaging apparatus comprising:
- an image acquisition unit configured to acquire a plurality of images of a subject's eye at different times;
- a tomographic image acquisition unit configured to acquire a plurality of tomographic images of the subject's eye based on interference light obtained by causing light reflected from the subject's eye irradiated with measurement light through a scanning unit, to interfere with reference light corresponding to the measurement light;
- a movement amount acquisition unit configured to acquire an amount of movement of the subject's eye based on the plurality of images;
- a control unit configured to control the scanning unit to correct, based on the acquired amount of movement, a scanning position between a scan and a next scan performed by the scanning unit;
- and
- an image processing unit configured to perform image processing on any of the plurality of tomographic images in each of which the acquired amount of movement is equal to or smaller than the threshold.
A method of controlling an optical coherence tomographic imaging apparatus for acquiring a plurality of tomographic images of a subject's eye based on interference light obtained by causing light reflected from the subject's eye irradiated with measurement light through a scanning unit, to interfere with reference light corresponding to the measurement light, the method comprising:
- acquiring at least an amount of rotation of the subject's eye among amounts of movement of the subject's eye based on a plurality of images of the subject's eye acquired at different times;
- and
- controlling the scanning unit to correct, based on the acquired amount of rotation, a scanning position between a scan and a next scan performed by the scanning unit.
A method of controlling an optical coherence tomographic imaging apparatus for acquiring a plurality of tomographic images of a subject's eye based on interference light obtained by causing light reflected from the subject's eye irradiated with measurement light through a scanning unit, to interfere with reference light corresponding to the measurement light, the method comprising:
- acquiring an amount of movement of the subject's eye based on a plurality of images of the subject's eye acquired at different times;
- controlling the scanning unit to correct, based on the acquired amount of movement, a scanning position between a scan and a next scan performed by the scanning unit;
- and
- performing image processing on any of the plurality of tomographic images in each of which the acquired amount of movement is equal to or smaller than the threshold.
Dependencies are inferred from the claim text.