PROBLEM TO BE SOLVED: To enable accurate detection of a pupil.SOLUTION: An image processing device 100 includes a pupil information registration part 140 which stores information on a pupil in detecting the pupil with accuracy in a latest radius information storage part 101c. Then, the image processing device 100 has a candidate pupil detecting part 130 which detects candidate pupils, and a pupil determining part 160 which determines the pupil based on a size of the candidate pupil and the information on the size of the pupil stored in the latest radius information storage part 101c.COPYRIGHT: (C)2014,JPO&INPIT【課題】瞳孔を精度良く検出すること。【解決手段】本実施例に係る画像処理装置100は、瞳孔情報登録部140が、瞳孔を精度良く検出した時点の瞳孔の情報を、直近半径情報記憶部101cに記憶させておく。そして、本実施例にかかる画像処理装置100は、瞳孔候補検出部130が、瞳孔の候補を検出し、瞳孔判定部160は、瞳孔の候補の大きさと、直近半径情報記憶部101cに記憶された瞳孔の大きさの情報とを基にして、瞳孔を判定する。【選択図】図1
