This invention can generate a high-resolution, low-noise tomogram while minimizing the influences of the flicks of the eyeballs, the movement of the head, and the like. The invention is an image processing apparatus (110) which processes a tomogram of an eye to be examined and includes detection units (113, 114) to detect the motion amount of the eye by using a signal obtained by capturing the tomogram, and a decision unit (115) to decide the number of scanning lines for capturing of the tomogram based on the motion amount detected by the detection units (113, 114).
