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|1. (WO2018223155) HAND TRACKING BASED ON ARTICULATED DISTANCE FIELD|
|Inventors:||TAYLOR, Jonathan James
KOWDLE, Adarsh Prakash Murthy
DAVIDSON, Philip L.
|Title:||HAND TRACKING BASED ON ARTICULATED DISTANCE FIELD|
An electronic device (100) estimates a pose of a hand (120) by volumetrically deforming a signed distance field (330) using a skinned tetrahedral mesh (410) to locate a local minimum of an energy function (810), wherein the local minimum corresponds to the hand pose. The electronic device identifies a pose of the hand by fitting an implicit surface model (305) of a hand to the pixels (320) of a depth image (115) that correspond to the hand. The electronic device uses the skinned tetrahedral mesh to warp space from a base pose to a deformed pose to define an articulated signed distance field from which the hand tracking module derives candidate poses of the hand. The electronic device then minimizes the energy function based on the distance of each corresponding pixel to identify the candidate pose that most closely approximates the pose of the hand.