Patent ID: 8031906
Filing Date: 2011-10-04
Classification: G06F,G06K,G06T,G08B

Abstract:
1. A computer based method for estimating a real-time orientation measure for a target using depth video image data, the method comprising the steps of: receiving as input a feed of depth video frames, the depth video frames capturing the target in real-time and including depth pixel data; storing a target-specific training set of depth video frames during an initial training period; identifying frames of the target-specific training set of depth video frames capturing the target in a dominant orientation by analyzing the target-specific training set of depth video frames; comparing, based in appearance, a current depth video frame with the target-specific training set of depth video frames to determine whether the current depth video frame includes the target in the dominant orientation; determining a current orientation measure based in part on depth data corresponding to the current depth video frame, the current orientation measure corresponding to a current orientation of the target captured in the current depth video frame; and setting the current orientation measure to a reference orientation measure in response to determining that the current depth video frame includes the target in the dominant orientation.