公开(公告)号：US09979897B2

公开(公告)日：2018-05-22

申请号：US15175248

申请日：2016-06-07

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Veronique C. Prinet ,  Caroline Chung ,  Wende Zhang

IPC: H04N5/235 ,  G06T7/00 ,  G06K9/46 ,  G06K9/62 ,  G06K9/00

CPC classification number: H04N5/2357 ,  G06K9/00791 ,  G06K9/4609 ,  G06K9/6267 ,  G06T5/002 ,  G06T7/11 ,  G06T7/215 ,  G06T2207/10016 ,  G06T2207/20182 ,  H04N5/2351 ,  H04N5/2354

Abstract: A method of detecting and correcting flicker. A video stream of a scene at various instances of time is captured by an image capture device. A local spatio-temporal feature extraction technique is applied, by a processor, to regions of the capture scene within each frame. Candidate flickering region detection is applied, by a classifier, to identify candidate regions. Corresponding candidate regions are tracked over time to detect illumination differences within each analyzed region. An illumination correction technique is applied to the candidate regions where flickering is detected. A flicker-free video is output on a display device.