Importance

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Abstract

A state-of-eye distinguishing means calculates a feature value that represents a state of an eye, for an eye-area based on pixel data of pixels that constitute the eye-area. A threshold value setting means calculates a first threshold value representing a feature value at a first transition point from an open state to a closed state and a second threshold value representing a feature value at a second transition point from the closed state to the open state, based on a feature value calculated for a targeted eye when the targeted eye is open. A blinking state detection means detects the blinking state of the eye corresponding to the eye-area, by sequentially comparing feature values which are sequentially calculated for a series of frame images by the state-of-eye distinguishing means with one of the first threshold value and the second threshold value.

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First Claim