Provided is an image processing apparatus including: an acquiring unit configured to acquire a plurality of pieces of tomographic data indicating tomographic information at substantially the same position of a subject to be inspected； and an image generating unit configured to generate a motion contrast image using the plurality of pieces of tomographic data, in which a data amount of a plurality of tomographic data used in generating one motion contrast image when the motion contrast image is to be generated as a moving image is smaller than a data amount of a plurality of tomographic data used in generating one motion contrast image when the motion contrast image is to be generated as a still image.
