Abstract: An image processing apparatus comprising a first correction unit which performs first gray-level correction on an image of a target region using a first correction amount, a first estimation unit which estimates a number of specific objects in the image of the target region corrected by the first correction unit, a second correction unit which performs second gray-level correction on the image of the target region using a second correction amount that is different from the first correction amount, a second estimation unit which estimates the number of specific objects in the image of the target region corrected by the second correction unit; and a selection unit which selects a larger one of the number of the specific objects estimated by the first estimation unit and the number of the specific objects estimated by the second estimation unit.

Abstract: The image capturing apparatus includes an image capturing unit for capturing a subject image, a calculating unit for calculating an exposure amount at a time of capturing by the image capturing unit, a range correction unit for performing range correction for compressing a range of luminance in an image signal captured by the image capturing unit, an identification unit for identifying a luminance change amount of an image signal caused by range correction, and a changing unit for, based on the luminance change amount identified by the identification unit, changing at least one of the exposure amount and a reference luminance value in an input/output characteristic in a case of performing the range correction.

Abstract: In an image pickup apparatus that can change an in-focus range by driving an aperture stop and changing a tilt angle, the in-focus range can be easily changed. A control apparatus of an image pickup apparatus includes a tilt changing unit that changes a tilt angle that is a relative angle between a lens and an image pickup element and an aperture driving unit that drives an aperture stop. The control apparatus comprises a request unit configured to request the image pickup apparatus to provide any one of at least the tilt angle, an aperture value, and a focus position; and a display controller configured to display an in-focus range of the image pickup apparatus on a display unit, wherein the display controller changes a content to be displayed on the display unit based on the information acquired by the request unit.

Abstract: A focusing adjustment method includes calculating an in-focus level of an imaging optical system including a diaphragm and a focus lens based on an output signal of an image sensor, setting an optional focus lens position based on an instruction from a user, performing first control for determining a diaphragm driving direction and a diaphragm driving amount, based on the in-focus level; and performing second control for determining a moving direction of the focus lens, based on an output signal of the image sensor and determining a driving amount of the focus lens based on the diaphragm driving amount, wherein, in the first control and the second control, the diaphragm and the focus lens are controlled in such a range that a specific region of captured image can be included in depth of field.

Abstract: An image processing apparatus comprising a first correction unit which performs first gray-level correction on an image of a target region using a first correction amount, a first estimation unit which estimates a number of specific objects in the image of the target region corrected by the first correction unit, a second correction unit which performs second gray-level correction on the image of the target region using a second correction amount that is different from the first correction amount, a second estimation unit which estimates the number of specific objects in the image of the target region corrected by the second correction unit; and a selection unit which selects a larger one of the number of the specific objects estimated by the first estimation unit and the number of the specific objects estimated by the second estimation unit.

Abstract: In an image pickup apparatus that can change an in-focus range by driving an aperture stop and changing a tilt angle, the in-focus range can be easily changed. A control apparatus of an image pickup apparatus includes a tilt changing unit that changes a tilt angle that is a relative angle between a lens and an image pickup element and an aperture driving unit that drives an aperture stop. The control apparatus comprises a request unit configured to request the image pickup apparatus to provide any one of at least the tilt angle, an aperture value, and a focus position; and a display controller configured to display an in-focus range of the image pickup apparatus on a display unit, wherein the display controller changes a content to be displayed on the display unit based on the information acquired by the request unit.

Abstract: The image capturing apparatus includes an image capturing unit for capturing a subject image, a calculating unit for calculating an exposure amount at a time of capturing by the image capturing unit, a range correction unit for performing range correction for compressing a range of luminance in an image signal captured by the image capturing unit, an identification unit for identifying a luminance change amount of an image signal caused by range correction, and a changing unit for, based on the luminance change amount identified by the identification unit, changing at least one of the exposure amount and a reference luminance value in an input/output characteristic in a case of performing the range correction.

Abstract: A focusing adjustment method includes calculating an in-focus level of an imaging optical system including a diaphragm and a focus lens based on an output signal of an image sensor, setting an optional focus lens position based on an instruction from a user, performing first control for determining a diaphragm driving direction and a diaphragm driving amount, based on the in-focus level; and performing second control for determining a moving direction of the focus lens, based on an output signal of the image sensor and determining a driving amount of the focus lens based on the diaphragm driving amount, wherein, in the first control and the second control, the diaphragm and the focus lens are controlled in such a range that a specific region of captured image can be included in depth of field.