Determination device reflection of external light, the determination method glare of external light and line-of-sight detecting device

摘要

Without an edge, and, even when the brightness of the occurrence location is less reflection of glasses, the determination method reflection of external light and determining device reflection of external light that can determine the reflection. Determination device (100), calculates a luminance histogram representing a luminance distribution of the eye region image, the difference calculation unit (104), the luminance histogram calculator (102), the eye region image in two different imaging timing reflection By taking the difference in the luminance histogram between the two calculated, calculates the difference histogram, based on the weight according to the brightness difference histogram, the evaluation value calculation unit (105), evaluation of the external light reflection The calculated value, based on the calculated evaluation value, the determination unit (107) is determined reflection of external light reflection.