User center-of-mass and mass distribution extraction using depth images

摘要

Embodiments described herein use depth images to extract user behavior, wherein each depth image specifies that a plurality of pixels correspond to a user. A depth-based center-of-mass position is determined for the plurality of pixels that correspond to the user. Additionally, a depth-based inertia tensor can also be determined for the plurality of pixels that correspond to the user. In certain embodiments, the plurality of pixels that correspond to the user are divided into quadrants and a depth-based quadrant center-of-mass position is determined for each of the quadrants. Additionally, a depth-based quadrant inertia tensor can be determined for each of the quadrants. Based on one or more of the depth-based center-of-mass position, the depth-based inertial tensor, the depth-based quadrant center-of-mass positions or the depth-based quadrant inertia tensors, an application is updated.

主权项

1. A method for using a depth image to extract user behavior, comprising:
receiving a depth image that specifies that a plurality of pixels correspond to a user,
wherein the depth image is obtained using a capture device located a distance from the user,wherein the depth image also specifies, for each of the pixels corresponding to the user, a pixel location and a pixel depth, andwherein the pixel depth, specified for each of the pixels corresponding to the user, is indicative of a distance between the capture device and a portion of the user represented by the pixel; determining, for each of the pixels corresponding to the user, a pixel mass that accounts for a distance between the portion of the user represented by the pixel and the capture device used to obtain the depth image; and determining, based on the pixel mass determined for each of the pixels corresponding to the user, a depth-based center-of-mass position for the plurality of pixels corresponding to the user that accounts for distances between the portions of the user represented by the pixels and the capture device used to obtain the depth image.