Provided is an image-capturing device including: a visible light signal generating unit (104) that extracts a visible light signal from a pixel signal from an image-capturing element (102); a light source color estimating unit (106) that estimates a color temperature of a light source from the visible light signal; a white-balance adjusting unit (108) that performs white balance correction on the visible light signal according to an estimation result; a non-visible light signal generating unit (105) that extracts a non-visible light signal from the signals from the image-capturing element (102); and an image composing unit (111) that combines and outputs the visible light signal on which the white balance correction was performed and the non-visible light signal.