Image pickup apparatus, image pickup method, and non-transitory computer-readable storage medium for correcting influence caused by an effective F-number
AssigneeCanon Kabushiki Kaisha
InventorTakeshi Yasutomi
Life of this patent
Estimating the term…
Abstract
An image pickup apparatus includes a sensor configured to pick up a plurality of images different in in-focus position in an optical axis direction, an adjustment unit configured to adjust a parameter relating to image pickup to correct influence caused by an effective F-number varied depending on an in-focus position when at least a part of the plurality of images is picked up, and a synthesis unit configured to synthesize the plurality of images.
Claims15
An apparatus, comprising:
- a sensor configured to pick up a plurality of images different in in-focus position in an optical axis direction via lenses;
- at least one memory configured to store instructions;
- and
- at least one processor in communication with the at least one memory and configured to execute the instructions to:
- adjust a parameter relating to image pickup so that an effective F-number of a first image and effective F-numbers of a plurality of images different in in-focus position to be picked up after the first image become equal;
- and
- synthesize the plurality of images,
- wherein the effective F-number is a parameter corresponding to brightness of a picked-up image and varies when the in-focus position is moved from an infinite end side to a closest end side while an aperture of the lens is opened at maximum.
A method, comprising:
- picking up a plurality of images different in in-focus position in an optical axis direction via lenses;
- adjusting a parameter relating so that an effective F-number of a first image and effective F-numbers of a plurality of images different in in-focus position to be picked up after the first image become equal;
- and
- synthesizing the plurality of images,
- wherein the effective F-number is a parameter corresponding to brightness of a picked-up image and varies when the in-focus position is moved from an infinite end side to a closest end side while an aperture of the lens is opened at maximum.
A non-transitory computer-readable storage medium which stores a program for causing a computer of an image pickup apparatus to execute a method, the method comprising:
- picking up a plurality of images different in in-focus position in an optical axis direction via lenses;
- adjusting a parameter relating to image pickup so that an effective F- number of a first image and effective F-numbers of a plurality of images different in in-focus position to be picked up after the first image become equal;
- and
- synthesizing the plurality of images,
- wherein the effective F-number is a parameter corresponding to brightness of a picked-up image and varies when the in-focus position is moved from an infinite end side to a closest end side while an aperture of the lens is opened at maximum.
Dependencies are inferred from the claim text.