1. An information processing system comprising: circuitry configured to acquire image data, distort the acquired image data by decreasing a curvature of a road or straightening the curvature of the road according to a predetermined distortion criterion including producing a blank portion in the acquired image at one or more positions of the curvature of the road as a result of the distortion, acquire an object image corresponding to an object that is at least partially obstructed in the acquired image due to the curvature of the road, combine the acquired object image with the distorted image data in order to generate the acquired object image at a location of the blank portion included in the distorted image data, and output the distorted image data combined with the acquired object image in order to decrease the curvature of the road or straighten the curvature of the road.