Canon Kabushiki Kaisha

Takeshi Kitamura

Koji Nozato

Makoto Sato

Akihiro Katayama

Yoshihiko Iwase

Kenji Muto

Daisuke Furukawa

Akio Saigusa

A compensation optical apparatus for obtaining and image of an object without reduction in image quality irrespective of aberration compensation, includes: a division unit for dividing a return beam from a measured object; an aberration measurement unit for measuring an aberration caused by the measured object, with a divided beam from the division unit; an aberration compensation unit for performing aberration compensation based on the aberration measured by the aberration measurement unit; a projection unit for projecting a beam obtained by the aberration compensation in the aberration compensation unit to the measured object; an acquirement unit for acquiring a value exhibiting a state of the measured object based on the return beam from the measured object, which is obtained by the beam projected from the projection unit; and a control unit for retreating the division unit from an optical path based on the value acquired by the acquirement unit.

Compensation optical apparatus and image sensing apparatus

An optical tomographic imaging apparatus is provided which includes a low-resolution mode for rough imaging and a high-resolution mode for obtaining detailed images. In particular, an optical tomographic imaging apparatus is provided which enables tomographic imaging during a high-resolution mode to be performed at higher speeds. An imaging apparatus according to the present invention captures an optical interference tomographic image based on a combined beam that combines a return beam from an object irradiated by a measuring beam and a reference beam corresponding to the measuring beam. The imaging apparatus according to the present invention further includes a beam diameter changing unit for changing a beam diameter of the measuring beam. Furthermore, the imaging apparatus according to the present invention includes a detection unit configured to detect the combined beam at a resolution according to the beam diameter.

Optical tomographic imaging apparatus

In a tomographic image photographing apparatus, a deformation of a volume image is corrected accurately even if an object to be inspected moves when the volume image is acquired. An image processing apparatus acquires a tomographic image of the object to be inspected from combined light beams of return light beams, which is obtained by irradiating the object to be inspected with a plurality of measuring light beams, and corresponding reference light beams. In the image processing apparatus, a photographing unit obtains a tomographic image of a fundus with the plurality of measuring light beams, and a detection unit detects a retina layer from the tomographic image. Based on the detected retina layer, a fundus shape is estimated. Based on the estimated fundus shape, a positional deviation between tomographic images is corrected.

Image processing apparatus and method for correcting deformation in a tomographic image

In an image processing apparatus, Whether image quality of a tomographic image corresponding to a predetermined position in an imaging target captured by an optical coherence tomography apparatus is within a predetermined range is determined, an instruction whether to permit the image capturing in the predetermined position is issued to the optical coherence tomography apparatus according to a determination that the image quality is out of the predetermined range, and a new tomographic image is generated by combining the tomographic image obtained according to the instruction and the tomographic image whose image quality is determined.

Image processing apparatus, control method, and optical coherence tomography system

There is provided an ophthalmologic apparatus capable of changing a gain to a digitized image signal according to observation and image taking operations by rewriting data in an LUT or selecting a suitable LUT from a plurality of LUTs.

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Port Washington, NY, United States of America

Takeshi Kitamura