公开(公告)号：EP2825996A4

公开(公告)日：2017-03-08

申请号：EP12871162

申请日：2012-03-13

Applicant: NOKIA TECHNOLOGIES OY

Inventor： ZOU YANMING ,  MA YONG ,  WANG KONGQIAO

IPC: G06K9/00

CPC classification number: G06K9/00295 ,  G06K9/00281 ,  G06K9/00288 ,  G06K9/00302 ,  G06K9/4642

公开(公告)号：EP2864933A4

公开(公告)日：2016-04-13

申请号：EP13808762

申请日：2013-04-24

Applicant: NOKIA TECHNOLOGIES OY

Inventor： MA YONG ,  ZOU YAN MING ,  WANG KONG QIAO

IPC: G06K9/00 ,  G06K9/62

CPC classification number: G06K9/00281 ,  G06K9/00261 ,  G06K9/00288

Abstract: The present invention provides a method for obtaining a human-face feature vector from a video image sequence, comprising: detecting a same human-face image in a plurality of image frames of the video sequence; dividing the detected human-face image into a plurality of local patches with a predetermined size, wherein each local patch is around or near a human-face feature point; determining a correspondence relationship between respective local patches of the same human-face image in the plurality of image frames of the video sequence; and using human-face local feature vector components extracted from respective local patches having a mutual correspondence relationship to form human-face local feature vectors representing facial points corresponding to the local patches. Besides, the present invention further provides an apparatus for obtaining a human-face feature vector from a video image sequence and a corresponding computer program product.