Patent ID: 9372546
Filing Date: 2016-06-21
CPC Classification: G06F,G06K,G06T

Claim Text:
1. A method for determining a finger pointing target, comprising: receiving a plurality of images comprising a sequence of images over time, including images acquired from different perspectives representing a hand having a finger with a finger pointing direction; tracking a plurality of landmarks on the hand comprising at least two visible landmarks of the finger having the finger pointing direction, a center of the hand, and a position of a wrist proximate to the hand, in a series of images, the respective landmarks being derived from common characteristics of hands from a plurality of different people; determining a best fit for visible landmarks of the hand in each of the series of images to an active appearance model; inferring a three dimensional position of each visible landmark in the series of images; determining the finger pointing directional vector of the finger based on the inferred three dimensional position of each visible landmark in the series of images; and determining a finger pointing gesture based on at least a change in the determined directional vector over time.