1. An apparatus, comprising: a splitter configured to split light in a parallel light region into at least a first component of light and a second component of light, wherein the light is received by the apparatus from at least one subject; a first imaging element configured to convert the first component of light into a first electrical signal representing a base image of the at least one subject; an optical arrangement configured to disperse the second component of light into at least a right component of light and a left component of light; a second imaging element configured to convert the right component of light into a second electrical signal representing a right detection image of the at least one subject at a first angle; a third imaging element configured to convert the left component of light into a third electrical signal representing a left detection image of the at least one subject at a second angle different from the first angle; and a circuitry configured to: generate a first parallax image based on the right detection image and the left detection image; and generate a second parallax image based on the first parallax image and the base image, wherein an image quality of the second parallax image is higher than an image quality of the first parallax image.