An information processing device according to one embodiment of the present invention includes: an acquisition unit that acquires a captured image; and an output unit that outputs a detection result of a subject detection process based on an image feature, which is for a region where subject detection based on an image feature of the captured image is performed, and a detection result of a subject detection process based on a factor other than an image feature, which is for a region other than the region where the subject detection based on the image feature of the captured image is performed.