Biometric optical anti-spoofing

Biometric optical anti-spoofing is described. A biometric imaging arrangement comprises a photodetector pixel array comprising at least a first pixel part arranged to receive light transmitted from aspectral filter having a spectral transmission band, and at least a second pixel portion arranged to receive light that is not transmitted from the spectral filter, the biometric imaging arrangement is configured to acquire an image of the object and perform user authentication based at least in part on a relationship between an intensity of light received by the first pixel part and an intensityof light received by the second pixel part in the acquired image. 本发明描述了生物特征光学反欺骗。一种生物特征成像布置包括光电检测器像素阵列，该光电检测器像素阵列包括至少第一像素部分和至少第二像素部分，至少第一像素部分被布置成接收从具有光谱透射带的光谱滤光器透射的光，至少第二像素部分被布置成接收未从光谱滤光器透射的光，其中，生物特征成像布置被配置成获取对象的图像并且至少部分地基于在所获取的图像中由第一像素部分接收的光的强度与由第二像素部分接收的光的强度之间的关系来执行用户认证。