The present invention can generate lines whose spatial correlation is high from a Bayer array imaging element, and can raise the coding efficiency of a captured image thereby. A read out controller reads two lines of pixel data from the Bayer array imaging element, generates two new lines by sorting, in accordance with a rule set in advance, pixel data included in the two lines that are read out, and outputs the result; a first encoder that inputs and encodes one of the two new lines obtained by the read out controller; and a second encoder that inputs and encodes the other of the two new lines obtained by the read out controller. Then, the read out controller generates a line configured by pixels of a single color component as at least one of the two new lines.