1. An image processor comprising: a motion detecting part configured to detect a moving region in each of a plurality of frame images captured by rolling shutter type exposure to obtain a motion vector of said moving region; and a moving-region correcting part configured to correct said moving region in a to-be-corrected frame image of said plurality of frame images on the basis of said motion vector, image-capturing-time-interval information on an image-capturing time interval between said plurality of frame images, exposure-starting-time-difference information on an exposure starting time difference resulting from the difference in position in one frame image caused by said rolling shutter type exposure and exposure-start-sequence information on an exposure start sequence depending on the position in one frame image captured by said rolling shutter type exposure.