Patent ID: 11861927
Assignee: AMAZON TECHNOLOGIES, INC.
Field: Audio-visual technology (Electrical engineering)
Classification: CPC G  H | IPC G  H

Claim 0:
1. A system for tracking a subject in three-dimensional space, the system comprising:
a processing system programmed to execute one or more sets of instructions, comprising:
at least one set of instructions for receiving a plurality of synchronized sequences of images from a plurality of cameras, wherein each of the cameras has a respective field of view in three-dimensional space;
at least one set of instructions for processing images in a first sequence of images in the plurality of synchronized sequences at a first time to identify features of the subject, wherein each of the features has first locations represented by positions in three-dimensional space;
at least one set of instructions for processing images in a second sequence of images in the plurality of synchronized sequences at a second time to identify candidate features for matching with the features of the subject, wherein each of the candidate features has second locations represented by positions in three-dimensional space; and
at least one set of instructions for tracking movement of the subject by matching the features of the subject from the first sequence of images with the candidate features of the subject from the second sequence of images and to updating the first locations of the features of the subject with the second locations of the candidate features, wherein the features comprise joints of a plurality of different types, and wherein the subject is represented by a set of candidate joints; and
at least one set of instructions for updating the set of candidate joints representing the subject using the candidate features.