PROBLEM TO BE SOLVED: To provide a biological state estimation device capable of highly accurately estimating a biological state of a driver.SOLUTION: A biological state estimation device includes: a physiological information detection section 2 having a physiological information feature amount calculation section 22 for calculating a physiological information feature amount on the basis of physiological information of a driver 11 acquired by a sensor 21; a face expression detection section 3 having a face expression feature amount calculation section 32 for calculating a face expression feature amount on the basis of face expression information extracted from a captured image of a camera 31 for imaging a face of a driver 11; a state estimation section 4 for estimating a state of a driver 11 on the basis of a physiological information feature amount and a face expression feature amount; and a physical stimulation generation section 5 for generating a physical stimulation to a driver 11. The state estimation section 4 generates a physical stimulation by the physical stimulation generation section 5, acquires a change amount of a physiological information feature amount and a change amount of a face expression feature amount before/after the physical stimulation, and weights a physiological information feature amount and a face expression feature amount in estimating a state of a driver 11 on the basis of the change amounts.SELECTED DRAWING: Figure 1
【課題】ドライバの生体状態を高精度に推定可能な生体状態推定装置を提供する。【解決手段】センサ21で取得したドライバ11の生理情報を基に生理情報特徴量を演算する生理情報特徴量演算部22を有する生理情報検出部2と、ドライバ11の顔を撮像するカメラ31の撮像画像から抽出した顔表情情報を基に顔表情特徴量を演算する顔表情特徴量演算部32を有する顔表情検出部3と、生理情報特徴量と顔表情特徴量とを基にドライバ11の状態を推定する状態推定部4と、ドライバ11への物理刺激を発生させる物理刺激発生部5と、を備え、状態推定部4は、物理刺激発生部5により物理刺激を発生させ、当該物理刺激の前後の生理情報特徴量の変化量及び顔表情特徴量の変化量を取得し、それら変化量を基に、ドライバ11の状態の推定の際に生理情報特徴量と顔表情特徴量に重み付けを行う。【選択図】図1
BIOLOGICAL STATE ESTIMATION DEVICE
生体状態推定装置
2018-08-30
Patent
Electronic Resource
Japanese
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