A 3D image capture device according to an embodiment includes: a light transmitting section 1 with a transmitting area 1a, of which the spectral transmittance characteristic varies in a first direction; an image sensor 2a which is arranged to receive light that has been transmitted through the light transmitting section 1 and which outputs a photoelectrically converted signal representing the light received; and an image processing section which extracts an edge of a subject in the first direction, which is included in an image that has been generated based on the photoelectrically converted signal supplied from the image sensor 2a, and which estimates information about the depth of the subject based on a lightness or hue pattern of a background in the vicinity of the edge extracted.