Stereoscopic image capturing device and method of controlling thereof

A stereoscopic image capturing device comprising:

• image capturing unit for acquiring a plurality of viewpoint images of the same subject from a plurality of viewpoints;
• parallax amount calculation unit for calculating the amount of parallax representing the amount of deviation between feature points having common features from the plurality of acquired viewpoint images;
• maximum parallax amount acquisition unit for acquiring the maximum amount of parallax on a distant view side from the calculated amount of parallax of each feature point;
• maximum display size acquisition unit for acquiring the maximum display size enabling binocular fusion when a stereoscopic image based on the plurality of viewpoint images is displayed on a stereoscopic display on the basis of the acquired maximum amount of parallax on the distant view side;
• and
• recording unit for generating a three-dimensional image file in which the plurality of viewpoint images are recorded, and recording the three-dimensional image file in a recording medium, the recording unit recording the plurality of viewpoint images in the three-dimensional image file and recording the maximum amount of parallax on the distant view side and the maximum display size in the three-dimensional image file as auxiliary information;
• virtual viewpoint image generation unit for generating one or a plurality of virtual viewpoint images corresponding to an arbitrary virtual viewpoint on the basis of at least one viewpoint image of the plurality of viewpoint images acquired by the image capturing unit and the amount of parallax calculated by the parallax amount calculation unit;
• and
• representative image setting unit for setting one of N images of the plurality of viewpoint images and the virtual viewpoint images as a representative image,
• wherein the maximum parallax amount acquisition unit acquires (N−1) maximum amount of parallax on the distant view side in association with two images of different combinations of the representative image and (N−1) images other than the representative image from the N images,
• the maximum display size acquisition unit acquire (N−1) maximum display sizes on the basis of the acquired (N−1) maximum amount of parallax on the distant view side, and
• the recording unit records the acquired (N−1) maximum amount of parallax and maximum display sizes on the distant view side in the three-dimensional image file as the auxiliary information.