To provide a viewpoint detection system with which it is possible to detect the viewpoint position of users even when a grayscale difference in an imaged image is insufficient.SOLUTION: A viewpoint detection system pertaining to the present invention comprises: a camera for imaging a driver D of a vehicle by infrared light projected to the driver D; and a control unit for detecting the positions of feature points of the driver D on the basis of a grayscale difference in the imaged image of the camera, detecting the positions of left and right irises IL, IR of the driver D in the imaged image on the basis of the detected feature points, and detecting the position of viewpoint IC of the driver D on the basis of the detected positions of the irises IL, IR . When it is difficult to detect the position of a feature point such as an inner canthus E1R, an outer canthus E2R or an upper eyelid E3R and difficult to detect the position of one of the irises IL, IR, the control unit generates a gamma corrected image Pγ in which the gamma value of the imaged image is adjusted, and detects the position of the feature point on the basis of a grayscale difference in the gamma corrected image Pγ.SELECTED DRAWING: Figure 5
【課題】 撮像画像における階調差が十分でない場合も利用者の視点位置を検出することができる視点検出システムを提供する。【解決手段】 本発明に係る視点検出システムは、車両の運転者Dに投影された赤外光により運転者Dを撮像するカメラと、カメラの撮像画像における階調差に基づいて、運転者Dの特徴点の位置を検出し、検出された特徴点に基づいて、撮像画像における運転者Dの左右の虹彩IL,IRの位置を検出し、検出された虹彩IL,IRの位置に基づいて、運転者Dの視点ICの位置を検出する制御部とを備え、制御部は、特徴点目頭E1R、目尻E2R及び上眼瞼E3R等の位置の検出が困難で虹彩IL,IRの一方の位置の検出が困難な場合に、撮像画像のガンマ値を調整したガンマ補正画像Pγを生成し、ガンマ補正画像Pγにおける階調差に基づいて、特徴点の位置を検出する。【選択図】 図5
VIEWPOINT POSITION DETECTION SYSTEM
視点位置検出システム
2022-02-10
Patent
Elektronische Ressource
Japanisch
IPC: | G06T Bilddatenverarbeitung oder Bilddatenerzeugung allgemein , IMAGE DATA PROCESSING OR GENERATION, IN GENERAL / B60K Anordnung oder Einbau von Antriebseinheiten oder von Kraft- bzw. Drehmomentübertragungen in Fahrzeugen , ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES / G02B Optische Elemente, Systeme oder Geräte , OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS / G06F ELECTRIC DIGITAL DATA PROCESSING , Elektrische digitale Datenverarbeitung / H04N PICTORIAL COMMUNICATION, e.g. TELEVISION , Bildübertragung, z.B. Fernsehen |
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