Patent ID: 8428311
Filing Date: 2013-04-23
Classification: G06K

Abstract:
1. A computer based method for recognizing a hand posture captured in an image, the method comprising: identifying a hand region in the image; estimating a scatter direction of the hand region in the image; determining an Inner Distance Shape Context (IDSC) descriptor for the hand region identified in the image, the IDSC descriptor not based on the scatter direction; matching the scatter direction to one of a plurality orientation bins, the matching orientation bin corresponding to that scatter direction; identifying a classifier associated with the matching orientation bin, the classifier comprising a plurality of reference IDSC descriptors corresponding to a plurality of hand posture classes, the classifier generated based on training images having scatter directions that also match the orientation bin; classifying the hand region into one of the plurality of hand posture classes by feeding the IDSC descriptor into the classifier.