Image capturing apparatus and image monitoring system
AssigneeCanon Kabushiki Kaisha
InventorTomoya Onaka
Life of this patent
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Abstract
An image-capturing apparatus comprises an image sensor, a driver configured to incline at least one of the image sensor and an image-capturing optical system with respect to a plane perpendicular to an optical axis of the image-capturing optical system, and a corrector configured to perform shading correction on an image-capturing signal based on an inclination angle of the at least one of the image sensor and the image-capturing optical system with respect to the plane.
Claims11
An image-capturing apparatus comprising:
- an image sensor;
- a hardware processor;
- and
- a memory for storing instructions to be executed by the hardware processor,
- wherein, when the instructions stored in the memory are executed by the hardware processor, the instructions cause the image-capturing apparatus to:
- incline the image sensor with respect to a plane perpendicular to an optical axis of an image-capturing optical system;
- and
- perform shading correction on an image-capturing signal based on an inclination angle of the image sensor with respect to the plane perpendicular to the optical axis,
- wherein when an incident angle of a light ray incident to a predetermined pixel of the image sensor is α and an inclination angle of the image sensor with respect to the plane perpendicular to the optical axis is θ, the shading correction is performed using a table or correction formula corresponding to an angle of θ+α.
A method for controlling an image-capturing apparatus comprising an image sensor, a hardware processor, and a memory for storing instructions that, when executed by the hardware processor, cause the image-capturing apparatus to incline the image sensor with respect to a plane perpendicular to an optical axis of an image-capturing optical system, the method comprising:
- determining whether an inclination angle of the image sensor with respect to the plane is larger than a predetermined angle or not;
- and
- performing shading correction on an image-capturing signal based on the inclination angle of the image sensor with respect to the plane perpendicular to the optical axis,
- wherein when an incident angle of a light ray incident to a predetermined pixel of the image sensor is α and an inclination angle of the image sensor with respect to the plane perpendicular to the optical axis is θ, the shading correction is performed using a table or correction formula corresponding to an angle of θ+α.
A non-transitory computer-readable storage medium storing a computer program for controlling an image-capturing apparatus comprising an image sensor, a hardware processor, and a memory for storing instructions that, when executed by the hardware processor, cause the image-capturing apparatus to incline the image sensor with respect to a plane perpendicular to an optical axis of an image-capturing optical system, the computer program executing a method that comprises:
- determining whether an inclination angle of the image sensor with respect to the plane is larger than a predetermined angle or not;
- and
- performing shading correction on an image-capturing signal based on the inclination angle of the image sensor with respect to the plane perpendicular to the optical axis,
- wherein when an incident angle of a light ray incident to a predetermined pixel of the image sensor is α and an inclination angle of the image sensor with respect to the plane perpendicular to the optical axis is θ, the shading correction is performed using a table or correction formula corresponding to an angle of θ+α.
Dependencies are inferred from the claim text.