公开(公告)号：US20240265731A1

公开(公告)日：2024-08-08

申请号：US18040241

申请日：2022-08-01

Applicant: Google LLC

Inventor： Mohammad Afshar ,  Saajan Shridhar ,  George Alban Heitz, III ,  Andrew C. Gallagher ,  Michael C. Nechyba ,  Joseph E. Roth

IPC: G06V40/16 ,  G06V10/762 ,  G06V10/94

CPC classification number: G06V40/172 ,  G06V10/762 ,  G06V10/95

Abstract: The present document describes systems and methods for on-device person recognition and provision of intelligent alerts. The system includes a decentralized multi-camera system for on-device facial recognition. A device (e.g., security camera, video doorbell) captures images/video of a person, processes input image frames, detects face images, filters static faces, and aligns a rotation of the face to be upright and frontal. The device then filters low-quality face images and/or images having a large portion of the face occluded. The device computes a face embedding, compares it against a set of locally stored reference embeddings, and sends matching results to cloud services, which, based on the matching result, notifies the device owner whether the observed person is a known person or a stranger. Face detection and recognition computations are performed on device, not at the cloud. No sensitive information is transmitted off device and privacy is thus preserved.