An image data generator 100 according to the present invention includes a shooting section 103, a color separating section 104, R, G and B imaging sensor sections 105, 106 and 107, an image shot storage section 108, an image shot writing section 109, a spatial frequency calculating section 186, a color channel range distribution calculating section 187, a color channel range distribution information writing section 188, a memory section 110, a shooting information reading section 111, a super-resolution section 240, an output section 114 and a line recognition signal generating section 185. This image data generator can get high-spatial-resolution, high-temporal-resolution image data with the same camera configuration as a conventional color camera and without decreasing the optical efficiency.