公开(公告)号：US11232284B2

公开(公告)日：2022-01-25

申请号：US16729001

申请日：2019-12-27

Applicant: OMNIVISION TECHNOLOGIES, INC.

Inventor： Badrinath Padmanabhan ,  Yiyi Ren ,  Wenshou Chen ,  Richard Mann ,  Alireza Bonakdar

IPC: G06K9/00 ,  G06N20/00 ,  G06K9/62 ,  G06F21/32

Abstract: A system comprising a polarization CMOS image sensor, at least one processor and a non-transitory computer-readable medium having computer-executable instructions stored thereon that, in response to execution by the at least one processor, cause the system to perform actions including receiving, from the polarization CMOS image sensor, polarization information and two-dimensional image information. The polarization information is processed using a machine learning model to generate an output that indicates whether the polarization information represents a valid biometric measurement of a physical feature of a subject.

公开(公告)号：US20210203872A1

公开(公告)日：2021-07-01

申请号：US16729088

申请日：2019-12-27

Applicant: OMNIVISION TECHNOLOGIES, INC.

Inventor： Wenshou Chen ,  Guansong Liu ,  Yiyi Ren ,  Chin Poh Pang ,  Badrinath Padmanabhan ,  Alireza Bonakdar

IPC: H04N5/3745 ,  H01L27/146 ,  H04N5/232 ,  H04N5/378

Abstract: In some embodiments, an image sensor is provided. The image sensor comprises a plurality of photodiodes arranged as a photodiode array. The plurality of photodiodes includes a first set of photodiodes configured as phase detection photodiodes, and a second set of photodiodes configured as polarization detection photodiodes. In some embodiments, a controller is provided. The controller comprises circuitry configured to process signals from a first set of photodiodes of a photodiode array to obtain depth information; process signals from a second set of photodiodes of the photodiode array to obtain polarization information; process the polarization information to obtain an ambiguous set of surface normals; and process the ambiguous set of surface normals using the depth information to obtain a three-dimensional shape image.