The invention has a purpose of providing an image-recognition device capable of appropriately performing image recognition even when a vehicle body is tilted, and a method for controlling the same.An image-recognition device 10 is mounted in the vehicle body and recognizes a surrounding situation of the vehicle body on the basis of image data that corresponds to an image of surroundings captured from the vehicle body. The image-recognition device 10 includes: a tilt-detection section 2 that detects a tilt of the vehicle body; an image-rotation section 4 that rotates the image data for correction in accordance with the tilt detected by the tilt-detection section 2; and an image-recognition section 5 that recognizes the surrounding situation of the vehicle body on the basis of corrected image data that is generated when the image-rotation section 4 rotates the image data for the correction.