Imaging apparatus, imaging method and imaging processing program
AssigneeSony Corporation
InventorSatoshi Ikuta
Life of this patent
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Abstract
An imaging apparatus is provided in which a picked-up image having no light-amount unevenness with respect to an arbitrary shutter speed is obtained in the case where the center of the brightness is deviated in accordance with the shutter speed. The imaging apparatus includes a shading correction center-position correction-function unit 11 which changes the center position of the shading correction by a shading correction unit 6 in accordance with the shutter speed of a mechanical shutter 2′ that switches the exposure timing of the imaging by a CCD 3 or in accordance with the zoom position of a lens.
Claims18
An imaging apparatus comprising:
- an imaging unit which picks up an image of a subject through an optical system;
- a shading correction unit which performs correction not to decrease the amount of light of the outer edge in the image of the subject picked up by said imaging unit;
- and
- a center position correction unit which changes a center position of the shading correction by said shading correction unit in accordance with the shutter speed of a shutter which switches the exposure timing of the imaging by said imaging unit.
An imaging method of performing shading correction not to decrease the amount of light of the outer edge in an image picked up through an optical system, comprising the steps of:
- executing computation to make a center position of said shading correction change at the time of autofocus of said optical system in accordance with the shutter speed of a shutter which switches the exposure timing of said imaging;
- and
- correcting a center position of an image at the time of capturing said image based on the amount of correction obtained by said computation.
A program for imaging processing in which a shading correction function is obtained not to decrease the amount of light of the outer edge in an image picked up through an optical system, to obtain the functions of:
- giving instructions to execute computation by which a center position of said shading correction is changed at the time of the autofocus of said optical system in accordance with the shutter speed of a shutter which switches the exposure timing of said imaging;
- and
- giving instructions to correct a center position of an image at the time of capturing said image based on the amount of correction obtained by said computation.
Dependencies are inferred from the claim text.