BACKGROUND OF THE DISCLOSURE

Field of the Disclosure

The aspect of the embodiments relates to an apparatus, a capturing apparatus, a control method and a storage medium, particularly to a live view display technology during image capturing.

Description of the Related Art

Conventionally, for an analog single-lens reflex camera, an optical viewfinder (hereinafter, OVF) is provided. Since the light incident on an image capturing lens is refracted by the reflex mirror and the pentaprism and reaches the OVF, a user can confirm a subject image with an immersive feeling as if the user were looking at the camera finder by cutting out actual scenery.

On the other hand, in the image capturing apparatus such as a digital camera, a function of electronic viewfinder (hereinafter, EVF) is provided by sequentially displaying (live view display) images captured by an image sensor such as a CCD or a CMOS device at predetermined intervals on a display device such as a liquid crystal monitor. Since it is possible to present an image to which various image processing is applied as the EVF, the user can confirm the effect of imaging settings such as exposure, shutter speed, white balance, and the like by the EVF before photographing.

Japanese Patent Laid-Open No 2010-245924 describes an image display apparatus that presents a high-tone captured image in which overexposure and underexposure are reduced by performing tone correction in order to enhance the visibility of the image presented by EVFs.

Incidentally, in order to allow the user to easily grasp what kind of image is recorded, a live view image generally presented by EVF has a configuration simulating an image recorded by photographing. Here, since the memory colors (or impression colors) that people remember as pictures are often more vivid than the actual colors, the images recorded by the image capturing apparatus are processed to be vivid and have high contrast.

However, since the expressions of colors and brightness appearing in such an image are different from those appearing in actual scenery seen by a human eye, it is difficult for the user to obtain an immersive feeling as if the user were looking at a camera finder by cutting out the actual scenery, such as OVF, for example.

SUMMARY OF THE DISCLOSURE

The disclosure in its first aspect provides an apparatus for generating a display image to be displayed on a display device based on a captured image obtained by capturing a scene, comprising: at least one processor; and a memory storing a program that, when executed by the at least one processor, causes the at least one processor to function as: a first obtaining unit configured to obtain the captured image; a second obtaining unit configured to obtain exposure setting relating to the obtained captured image; a third obtaining unit configured to obtain luminance of the scene; a setting unit configured to set a mode for generating the display image; and a generation unit configured to generate the display image by performing luminance conversion of the obtained captured image depending on a mode set by the setting unit, wherein in a case where a first mode is set, the generation unit performs the luminance conversion of the captured image using a first conversion characteristic indicating that output luminance after conversion is determined for the luminance of the scene, and that the output luminance does not change depending on the exposure setting, and in a case where a second mode is set, the generation unit performs the luminance conversion of the captured image using a second conversion characteristic indicating that the output luminance changes depending on the exposure setting.

The disclosure in its second aspect provides a capturing apparatus comprises: the apparatus according to the first aspect; an image sensor outputs the captured image; at least one processor; and a memory storing a program that, when executed by the at least one processor, causes the at least one processor to function as a display control unit configured to control display of the display image on the display device.

The disclosure in its third aspect provides a method of an apparatus for generating a display image to be displayed on a display device based on a captured image obtained by capturing a scene, comprising: first obtaining the captured image; second obtaining exposure setting relating to the captured image obtained by the first obtaining; third obtaining luminance of the scene; setting a mode for generating the display image; and generating the display image by performing luminance conversion of the captured image by the first obtaining depending on a mode set by the setting, wherein in a case where a first mode is set, the luminance conversion of the captured image is performed using a first conversion characteristic indicating that output luminance after conversion is uniquely determined for the luminance of the scene, and that the output luminance does not change depending on the exposure setting, and in a case where a second mode is set, the luminance conversion of the captured image is performed using a second conversion characteristic indicating that the output luminance changes depending on the exposure setting.

The disclosure in its fourth aspect provides a control method of an image capturing apparatus having an image processing apparatus according to the first aspect and an image sensor outputs the captured image by capturing, comprising: a display control step for controlling display of the display image on the display device.

The disclosure in its fifth aspect provides a computer-readable storage medium storing a program for causing a computer to perform method of an apparatus for generating a display image to be displayed on a display device based on a captured image obtained by capturing a scene, the method comprising: first obtaining the captured image; second obtaining exposure setting relating to the captured image obtained by the first obtaining; third obtaining luminance of the scene; setting a mode for generating the display image; and generating the display image by performing luminance conversion of the captured image obtained by the first obtaining depending on a mode set by the setting, wherein in a case where a first mode is set, the luminance conversion of the captured image is performed using a first conversion characteristic indicating that output luminance after conversion is uniquely determined for the luminance of the scene, and that the output luminance does not change depending on the exposure setting, and in a case where a second mode is set, the luminance conversion of the captured image is performed using a second conversion characteristic indicating that the output luminance changes depending on the exposure setting.

Further features of the disclosure will become apparent from the following description of exemplary embodiments (with reference to the attached drawings).

