Image sensing apparatus featured with vibration prevention function
AssigneeCanon Kabushiki Kaisha
InventorsHideo Kawahara, Toshimichi Kudo
Life of this patent
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Abstract
An image sensing apparatus which hinders execution of vibration cancellation control when an image is sensed with a high-magnification lens, by suppressing vibration cancellation control. Movement of the image sensing apparatus generated purposefully by a user is reflected upon the sensed image without unexpected moving compensation by the vibration cancellation control.
Claims25
A correction apparatus for correcting a movement of image due to vibration of an image sensing device having an optical system for zooming operation, comprising:
- detection means for detecting movement of the image sensing device;
- correcting means for correcting the movement of image due to vibration of the image sensing device according to an output of said detection means;
- magnification detection means for detecting a magnification of the optical system;
- and
- control means for, in accordance with a detection result of said magnification detection means, controlling said correcting means to reduce a total movement correction amount of said correcting means in the case that the magnification of the optical system exceeds a predetermined value on a telephoto side.
An image sensing apparatus for canceling a disturbance of image due to vibrations, comprising:
- vibration detection means for detecting vibrations of said image sensing apparatus or an optical system of said image sensing apparatus;
- image vibration cancellation means for optically canceling vibrations of the image through the optical system, in accordance with an output form said vibration detection means;
- image sensing means for sensing an image of which vibrations have been canceled by said image vibration cancellation means;
- mode switching-over means for switching a sensing mode of said image sensing means between a moving-image mode or a still-image mode;
- and
- control means for changing a correctable range of image vibration by said image vibration cancellation means into a range value smaller than that in the moving-image mode, when a sensing mode is switched from the moving-image mode to the still-image mode.
An image sensing apparatus capable of canceling disturbance of image due to vibrations, comprising:
- vibration detection means for detecting vibrations of said image sensing apparatus or an optical system of said image sensing apparatus;
- image vibration cancellation means for canceling vibrations of image via the optical system, in accordance with an output from said vibration detection means;
- image sensing means for sensing an image of which vibrations canceled by said image vibration cancellation means;
- mode switching means for switching a sensing mode of said image sensing means between a moving-image mode or a still-image mode;
- movement detection means for detecting a panning or tilting movement generated by a user, wherein said control means is activated when a panning or tilting movement is detected by said movement detection means;
- and
- control means for, when said sensing mode switching means is switched from the moving-image mode to a still-image mode, controlling such that a still image outputted by said image sensing means is permitted in the case that a cancellation amount of said image vibration cancellation means is less than a predetermined value,
- wherein said control means sets a threshold value said movement detection means uses in detecting a panning or tilting movement, so that said threshold value is set to functions more sensitively in a still-image mode than in a moving-image mode.
A correction method for correcting a movement of image due to vibration of an image sensing device having an optical system for zooming operation, comprising:
- detection step of detecting movement of the image sensing device;
- magnification detection step of detecting a magnification of the optical system;
- correction step of correcting the movement of image due to vibration of the image sensing device according to an output of said detection step;
- and
- control step of, in accordance with a detection result of said magnification detection step, controlling a total movement correction amount in said correction step to reduce the movement correction amount in the case that the magnification of the optical system exceeds a predetermined value on a telephoto side.
Dependencies are inferred from the claim text.