APPARATUS FOR DETECTING INCLINATION ANGLE AND CONTROLLER

An apparatus for detecting an inclination angle includes a processor configured to input an image generated by a camera into a first classifier that has been trained to detect a two-wheeler, thereby detecting an object region including the two-wheeler in the image; rotate the object region by predetermined different angles to define characteristic regions as respective rotated regions; cut out the characteristic regions from the image; and detect a width of the two-wheeler in each of the characteristic regions and detects a rotation angle relative to the image as the inclination angle of the two-wheeler to the normal of the ground, based on rotation angles of the respective characteristic regions relative to the image and widths of the two-wheeler in the respective characteristic regions, the rotation angle minimizing the width of the two-wheeler.