An image processing device includes: a data obtainment unit which obtains an input image captured from a first viewpoint, and depth information indicating a depth of a subject in the input image; a viewpoint transformation unit which generates, using the depth information, a plurality of first transformed images each of which is an image of the input image seen from a corresponding one of second viewpoints different from the first viewpoint; and a blank area analysis unit that analyzes a blank area which is included in each of the first transformed images and includes a pixel which does not have a corresponding pixel in the input image, and generate blank information which indicates, for each of the second viewpoints, a size of the blank area in the first transformed image corresponding to the second viewpoint.