A radiographic system includes a plurality of radiation detection apparatuses (120, 122, 124) that detect X-rays and output a plurality of radiation images, a combining processor (142) that generates a long-size image by combining the plurality of radiation images obtained from the plurality of radiation detection apparatuses, and an image correction unit (146) that corrects a defective region in the long-size image in which at least two of the plurality of radiation detection apparatuses overlap with each other in the long-size image.
