Robust two-stage lip tracker

摘要

We propose a novel two-stage lip tracking method. A model-based inverse compositional (MIC) feature tracker is first used to track the outer lip, and a fast block matching algorithm is then used to track the inner lip. The proposed two-stage lip tracker outperforms single stage lip trackers such as AAM lip tracker and MIC lip tracker in terms of lower RMS fitting error and faster lip fitting speed.