公开(公告)号：US20170280079A1

公开(公告)日：2017-09-28

申请号：US15081642

申请日：2016-03-25

Applicant: QUALCOMM Incorporated

Inventor： Zhengming FU ,  Shan LU ,  Jing LING

IPC: H04N5/374 ,  G06K9/46 ,  G06F1/32 ,  H04N5/378

CPC classification number: H04N5/374 ,  G06F1/3234 ,  G06K9/00986 ,  G06K9/4604 ,  G06K2009/4666 ,  H04N5/378

Abstract: Techniques for direct local binary pattern (LBP) generation are presented. An image sensor for LBP generation includes a variable reference signal generator and a sensor pixel array that can generate events based on optical signals on the sensor pixel array and a reference level from the variable reference signal generator. The image sensor also includes an address encoder that can encode the addresses of the sensor pixels that generate events, and a binary image generator that can create a binary image based on the addresses of the sensor pixels that generate the events at the reference level. The image sensor may also include a local binary pattern generator configured to determine local binary pattern labels for image pixels whose binary value changes from a first binary image at a first reference level to a subsequent second binary image at a next reference level.