Patent ID: 9053371
Filing Date: 2015-06-09
Classification: G06K

Abstract:
1. A method performed by a combination of electronic circuitry components for identifying a location of an object within a video sequence, the method comprising: detecting motion of the object within a field of view of a passive infrared sensor, in response to signals from the passive infrared sensor; in response to the detecting of the motion of the object within the field of view of the passive infrared sensor, enabling a three-dimensional sensor to operate in a two-dimensional operating mode; detecting motion of the object within a field of view of the three-dimensional sensor, in response to signals from the three-dimensional sensor operating in the two-dimensional operating mode; in response to the detecting of the motion of the object within the field of view of the three-dimensional sensor, enabling the three-dimensional sensor to operate in a three-dimensional operating mode; determining whether the motion is a human type of movement, in response to signals from the three-dimensional sensor operating in the three-dimensional operating mode; in response to determining that the motion is the human type of movement, identifying the location within the video sequence of the object that does the motion; and in response to the identifying of the location of the object within the video sequence, partitioning the located object into multiple segments, and identifying human skeleton points of the multiple segments; wherein determining whether the motion is the human type of movement includes: detecting features of the motion; computing three-dimensional motion vectors of the features between successive frames of the video sequence from the three-dimensional sensor; and comparing the features and three-dimensional motion vectors to characteristics that distinguish the human type of movement from a non-human type of movement.