Image stabilization apparatus and image stabilization method
AssigneeCanon Kabushiki Kaisha
InventorShimpei Miyahara
Life of this patent
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Abstract
An image stabilization apparatus comprises: an identification unit that, based on an angular velocity signal outputted from a shake detection unit, a motion vector calculated from a difference between frames of images outputted from an image sensor, and a position signal indicating a position of a correction unit that corrects a shake optically, identifies an output variation of the shake detection unit; and a conversion unit that converts the angular velocity signal into a shake correction amount by correcting the angular velocity signal based on the output variation identified by the identification unit.
Claims23
An age stabilization apparatus comprising:
- an identification unit that, based on an angular velocity signal outputted from an angular velocity sensor, a motion vector calculated from a difference between frames of images outputted from image sensor, and a position signal indicating a position of a correction unit that corrects a shake optically, identifies an output variation of the angular velocity sensor;
- and
- a conversion unit that converts the angular velocity signal into a shake correction amount signal by correcting the angular velocity signal based on the output variation identified by the identification unit,
- wherein the output variation is a variation of a sensitivity and an offset of the angular velocity sensor, and
- wherein the conversion unit converts the angular velocity signal into the shake correction amount signal by applying the variation of the sensitivity of the angular velocity sensor and the offset of the angular velocity sensor to the angular velocity signal;
- each unit is implemented by at least one processor or circuitry, or combination thereof.
An image stabilization method, comprising:
- identifying an output variation of an angular velocity sensor based on an angular velocity signal outputted from the angular velocity sensor, a motion vector calculated from a difference between frames of images outputted from an image sensor, and a position signal indicating a position of a correction unit that corrects a shake optically;
- correcting the angular velocity signal based on the identified output variation and converting the corrected angular velocity signal into a shake correction amount signal;
- and
- correcting the shake based on the shake correction amount signal,
- wherein the output variation is a variation of a sensitivity and an offset of the angular velocity sensor;
- and
- wherein the angular velocity signal is corrected into the shake correction amount signal by applying the variation of the sensitivity of the angular velocity sensor and the offset of the angular velocity sensor to the angular velocity signal.
Dependencies are inferred from the claim text.