In the present invention, effective thinned reading is performed when using an imaging device provided with a color filter other than a Bayer array. This imaging device (10) is provided with: an imaging element (14) containing a plurality of photoelectric conversion elements arrayed in a first and second direction; a color filter, wherein a basic array pattern resulting from a first and second filter being disposed in a predetermined pattern of N×M pixels and the first and second filter being disposed in a first and second direction is disposed repeatedly, and the first filter is disposed in a first-third direction in the color filter; a line image data generation means that, from the imaging element (14), reads the pixel signals of a plurality of pixels at a set cycle, and from the read pixel signals, generates line image data comprising pixel signals of pixels arrayed along the second direction and arrayed in an (N+k) line cycle in the first direction among the plurality of pixels; and an image data generation means that generates image data on the basis of the line image data.