Problem to be solved: to provide a technique capable of accurately detecting yawn.A biometric state determining apparatus for judging the state of a living body is an index acquisition part for acquiring an index indicating the condition of the eye based on the photographing image containing the eye of the organism, and a yawn detecting part for detecting the yawn of the living body based on the index .Diagram【課題】あくびを正確に検出することができる技術を提供する。【解決手段】生体の状態を判定する生体状態判定装置は、前記生体の眼を含む撮影画像に基づいて前記眼の潤い状態を示す指標を取得する指標取得部と、前記指標に基づいて前記生体のあくびを検出するあくび検出部と、を備える。【選択図】図1
