1. An imaging apparatus which uses a defect correction circuit to perform predetermined signal processing with respect to image signals respectively output from an imaging section in which a plurality of pixels each formed of a photoelectric transducer with a color filter provided thereon are two-dimensionally arranged, wherein the defect correction circuit includes: a pattern extraction circuit which extracts image pattern information based on a signal of an adjacent pixel that is adjacent to a judgment target pixel and signals of peripheral pixels that are close to the adjacent pixel and have the same color as the adjacent pixel in the image signals; and a substitution circuit which substitutes a signal of the judgment target pixel by signals of peripheral pixels that are close to the judgment target pixel and have the same color as the judgment target pixel.