公开(公告)号：US11468576B2

公开(公告)日：2022-10-11

申请号：US17178570

申请日：2021-02-18

Applicant: NEC Laboratories America, Inc.

Inventor： Kunal Rao ,  Utsav Drolia ,  Murugan Sankaradas ,  Srimat Chakradhar

IPC: G06T7/292 ,  H04N7/18 ,  G06V20/52 ,  G06V40/50 ,  G06V40/16 ,  G06Q30/02

Abstract: A method for tracing individuals through physical spaces that includes registering cameras in groupings relating a physical space. The method further includes performing local video monitoring including a video sensor input that outputs frames from inputs from recording with the cameras in the groupings, a face detection application for extracting faces from the output frames, and a face matching application for matching faces extracted from the output frames to a watchlist, and a local movement monitor that assigns tracks to the matched faces. The method further includes performing a global monitor including a biometrics monitor for preparing the watchlist of faces, the watchlist of faces being updated when a new face is detected by the cameras in the groupings, and a global movement monitor that combines the outputs from the assigned tracks to the matched faces to launch a report regarding individual population traveling to the physical spaces.

公开(公告)号：US20220114717A1

公开(公告)日：2022-04-14

申请号：US17496246

申请日：2021-10-07

Applicant: NEC Laboratories America, Inc.

Inventor： Utsav Drolia ,  Srimat Chakradhar ,  Sibendu Paul

IPC: G06T7/00 ,  H04N5/232 ,  G06N3/04

Abstract: Methods and systems for image filtering include detecting a distortion level of input images, using a distortion detection model that is trained using confidence values generated by a pre-trained image classifier with a set of distorted training images. An analysis is performed on input images having a detected distortion level that is lower than a threshold, with input images having an above-threshold detected distortion level being filtered out.

公开(公告)号：US20200294339A1

公开(公告)日：2020-09-17

申请号：US16809147

申请日：2020-03-04

Applicant: NEC Laboratories America, Inc.

Inventor： Kunal Rao ,  Giuseppe Coviello ,  Srimat Chakradhar ,  Min Feng ,  Murugan Sankaradas ,  Utsav Drolia

IPC: G07C9/26 ,  G06F21/32 ,  H04L9/32 ,  G06K9/00

Abstract: Methods and systems for authentication include determining, at a first worker system, that a master system that stores a current authentication-list cannot be reached by a first network. Authentication is performed on an authentication request using a previously stored copy of the authentication-list at the first worker system. The authentication includes facial recognition that is performed on detected face images for a first time window, before receiving the authentication request, and for a second time window, after receiving the authentication request. Authentication removes matching detected face images after completing an authentication request to prevent other individuals from using a same identifier. Access is granted to a secured area responsive to the authentication.