1. An image processing apparatus to perform image processing on moving images, the image processing apparatus comprising: a movement velocity calculating unit to calculate movement velocities of a subject according to a frame rate of output images in units of partial areas in each frame image constituting the moving images; and an image generation processing unit to receive movement velocity information of the respective partial areas, obtain optimal imaging shutter speeds that correspond to the movement velocities and that reduce degradation of the output images in units of the partial areas, generate images corresponding to the obtained optimal shutter speeds in units of the partial areas, and output each frame image generated by combining the generated partial area images.