Image stabilization apparatus and method, and image capturing system
AssigneeCanon Kabushiki Kaisha
InventorTomomi Mogami
Life of this patent
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Abstract
An image stabilization apparatus comprising: a control unit that controls image stabilization for reducing image blur, by shooting a plurality of images with an image sensor, and aligning and compositing the plurality of images; an acquisition unit that acquires information relating to an exposure period and a resolving power of an image capturing system including the image sensor; and a determination unit that determines whether to perform the image stabilization, based on the information.
Claims16
An image stabilization apparatus comprising one or more processors and/or circuitry which function as:
- a control unit that controls image stabilization for reducing image blur, by shooting a plurality of images with an image sensor, and aligning and compositing the plurality of images;
- an acquisition unit that acquires information relating to an exposure period and a resolving power of an image capturing system including the image sensor;
- and
- a determination unit that determines whether to perform the image stabilization, based on the information,
- wherein the acquisition unit acquires and compares a resolving power of a signal read out from the image sensor and a resolving power of an imaging optical system configured to form light from a subject into an image on the image sensor under currently set shooting conditions, and determines the lower one of the resolving powers as the resolving power of the image capturing system.
An image capturing system comprising:
- an image sensor;
- and
- an image stabilization apparatus comprising one or more processors and/or circuitry which function as:
- a control unit that controls image stabilization for reducing image blur, by shooting a plurality of images with an image sensor, and aligning and compositing the plurality of images;
- an acquisition unit that acquires information relating to an exposure period and a resolving power of an image capturing system including the image sensor;
- and
- a determination unit that determines whether to perform the image stabilization, based on the information,
- wherein the acquisition unit acquires and compares a resolving power of a signal read out from the image sensor and a resolving power of an imaging optical system configured to form light from a subject into an image on the image sensor under currently set shooting conditions, and determines the lower one of the resolving powers as the resolving power of the image capturing system.
An image stabilization method comprising:
- acquiring information relating to a focal length, a shooting magnification, an exposure period, and a resolving power of an image capturing system including an image sensor;
- determining whether the resolving power decreases due to shake of a predetermined magnitude occurring, in a case of performing shooting under conditions according to the information;
- and
- performing control to perform image stabilization if it is determined that the resolving power will decrease, and to not perform the image stabilization if it is determined that the resolving power will not decrease,
- wherein a resolving power of a signal read out from the image sensor and a resolving power of an imaging optical system configured to form light from a subject into an image on the image sensor are compared with the compared resolving powers being under currently set shooting conditions, and the lower one of the resolving powers is determined as the resolving power of the image capturing system, and
- wherein the image stabilization is processing for reducing image blur, by shooting a plurality of images with the image sensor, and aligning and compositing the plurality of images.
Dependencies are inferred from the claim text.