1. An image processing apparatus comprising: an acquisition unit that acquires a high-resolution image obtained from a broad-range image sensing unit, and a low-resolution image which corresponds to the high-resolution image and has a resolution lower than the high-resolution image, wherein each of the high-resolution image and the low-resolution image contains geometric distortions; a detection unit that detects an object in the low-resolution image; a decision unit that decides a region including the detected object within the low-resolution image as an object region and decides a region corresponding to the object region within the high-resolution image as a target region; a correction unit that corrects the geometric distortion of a partial image being an image of the target region, within the high-resolution image; and a recognition unit that performs an object recognition processing for the partial image of which the geometric distortion has been corrected.