Imaging apparatus and control method therefor
First Claim
1. An imaging apparatus comprising:
- an imaging unit configured to capture an object via an optical system; and
an image shake correcting unit configured to correct image shake of an image captured by the imaging unit,wherein the image shake correcting unit comprises;
a first image shake correcting unit configured to optically correct the image shake of the image by a motion of an optical member; and
a second image shake correcting unit configured to perform image shake correction by processing the image captured by the imaging unit, andwherein the second image shake correcting unit comprises;
a first detecting unit configured to detect a motion of the image in a translational direction in a plane perpendicular to an optical axis of the optical system as a translational motion amount from the image optically corrected by the first image shake correcting unit;
a second detecting unit configured to detect a motion of the image in a rotational direction about the optical axis of the optical system as a rotational motion amount; and
a geometric deforming unit configured to acquire the translational motion amount and the rotational motion amount, perform correction by rotating the captured image in accordance with the rotational motion amount with respect to the translational motion amount, and calculate a tangential directional component of the motion of the image in the translational direction generated by the correction so as to correct the motion of the image by geometric deformation processing.
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Abstract
An imaging apparatus includes a first image shake correcting unit for correcting image shake and moves a correction lens in a direction perpendicular to the optical axis using detection information obtained by an attitude detection sensor. In a second image shake correcting unit, a translational motion detecting unit acquires information about an image captured by an imaging element from a pre-processing unit so as to detect the motion of the image in the translational direction. An in-plane rotational motion detecting unit detects the motion of the image in the rotational direction about the optical axis. A geometric deforming unit acquires detection information from the translational motion detecting unit and the in-plane rotational motion detecting unit so as to correct the image shake of the corrected image, which occurs when the image is subject to rotational correction based on the detection information obtained from the in-plane rotational motion detecting unit.
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Citations
8 Claims
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1. An imaging apparatus comprising:
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an imaging unit configured to capture an object via an optical system; and an image shake correcting unit configured to correct image shake of an image captured by the imaging unit, wherein the image shake correcting unit comprises; a first image shake correcting unit configured to optically correct the image shake of the image by a motion of an optical member; and a second image shake correcting unit configured to perform image shake correction by processing the image captured by the imaging unit, and wherein the second image shake correcting unit comprises; a first detecting unit configured to detect a motion of the image in a translational direction in a plane perpendicular to an optical axis of the optical system as a translational motion amount from the image optically corrected by the first image shake correcting unit; a second detecting unit configured to detect a motion of the image in a rotational direction about the optical axis of the optical system as a rotational motion amount; and a geometric deforming unit configured to acquire the translational motion amount and the rotational motion amount, perform correction by rotating the captured image in accordance with the rotational motion amount with respect to the translational motion amount, and calculate a tangential directional component of the motion of the image in the translational direction generated by the correction so as to correct the motion of the image by geometric deformation processing. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A control method to be executed by an imaging apparatus that comprises an imaging unit configured to capture an object via an optical system and image shake correcting unit configured to correct image shake of an image captured by the imaging unit and performs first image shake correction for optically correcting the image shake of the image by a motion of an optical member and second image shake correction for correcting image shake by processing the image captured by the imaging unit, wherein the second image shake correction comprises:
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detecting a motion of the image in a translational direction in a plane perpendicular to an optical axis of the optical system as a translational motion amount from the image optically corrected by the first image shake correction; detecting a motion of the image in a rotational direction about the optical axis of the optical system as a rotational motion amount; and acquiring the translational motion amount and the rotational motion amount, performing correction by rotating the captured image in accordance with the rotational motion amount with respect to the translational motion amount, and calculating a tangential directional component of the motion of the image in the translational direction generated by the correction so as to correct the motion of the image by geometric deformation processing.
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Specification