1. An information processing apparatus comprising: a Hough transform unit executing Hough transformation on a biometrics image which is image information unique to a living body; and a block detection unit detecting whether a block having a predetermined shape is included in a Hough space image which is a Hough-transformed biometrics image, outputting present position information representing a position at which the block is located in the Hough space image when the block is determined to be included in the Hough space image.