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    • 9. 发明授权
    • OBJECT DISTANCE DETERMINATION FROM IMAGE
    • OBJEKTABSTANDSERKENNUNG ANHAND EINES BILDES
    • EP2748797B1
    • 2015-03-04
    • EP12795618.3
    • 2012-09-21
    • Koninklijke Philips N.V.
    • MUIJS, Remco Theodorus JohannesDE BRUIJN, Frederik JanGRITTI, Tommaso
    • G06T7/00
    • G06T7/004G06T7/571G06T7/70G06T2200/21G06T2207/10141G06T2207/30041G06T2207/30196H04N13/373
    • A system for determining a distance to an object comprises an image capture device (101) which has a coded aperture and an image sensor which is positioned out of a focus plane of the coded aperture. A receiver (103) receives an image of a scene from the image sensor and a detector (105) detects at least two image objects of the image corresponding to ghost images of the object resulting from different openings of the coded aperture in response to an optical characteristic of the object. A distance estimator (107) then determines a distance to the object in response to a displacement in the image of the at least two image objects. The distance may be to a person and the image may be a bright pupil image wherein pupils are enhanced by reflection of light by the retina. The image may be compensated by a dark pupil image of the scene.
    • 用于确定到物体的距离的系统包括具有编码孔径的图像捕获装置(101)和位于编码孔径的聚焦平面之外的图像传感器。 接收器(103)从图像传感器接收场景的图像,并且检测器(105)响应于光学检测器(105)检测对应于由编码孔径的不同开口产生的物体的重影图像的图像的至少两个图像对象 物体的特征。 然后,距离估计器(107)响应于至少两个图像对象的图像中的位移来确定到对象的距离。 该距离可以是一个人,并且图像可以是通过视网膜反射光来增强瞳孔的明亮瞳孔图像。 图像可以通过场景的暗瞳孔图像来补偿。