公开(公告)号：US11734949B1

公开(公告)日：2023-08-22

申请号：US17210170

申请日：2021-03-23

Applicant: AMAZON TECHNOLOGIES, INC.

Inventor： Igor Kviatkovsky ,  Shunit Haviv ,  Manoj Aggarwal ,  Gal Novich ,  Gerard Guy Medioni

IPC: G06V40/12 ,  G06T7/73 ,  G06V40/10 ,  G06V40/13

CPC classification number: G06V40/1365 ,  G06T7/74 ,  G06V40/107 ,  G06V40/117 ,  G06V40/1318 ,  G06T2207/30196

Abstract: Images of a hand are obtained by a camera. These images may depict the fingers and palm of the user. A pose of the hand relative to the camera may vary due to rotation, translation, articulation of joints in the hand, and so forth. One or more canonical images are generated by mapping the images to a canonical model. A first embedding model is used to determine a first embedding vector representative of the palm as depicted in the canonical images. A second embedding model is used to determine a set of second embedding vectors, each representative of individual fingers as depicted in the canonical images. Embedding distances in the embedding space from the embedding vectors to a closest match of previously stored embedding vectors are multiplied together to determine an overall distance. If the overall distance is less than a threshold value, an identity of a user is asserted.