The template update problem
L. Matthews, T. Ishikawa, Simon J Baker · IEEE Transactions on Pattern Analysis and Machine Intelligence · 2004
Template tracking dates back to the 1981 Lucas-Kanade algorithm. One question that has received very little attention, however, is how to update the template so that it remains a good model of the tracked object. We propose a template update algorithm that avoids the "drifting" inherent in the naive algorithm.