The invention provides a face key
point tracking system and method applied to a
mobile device. The
system is composed of an initial face frame detection module, a face key point regression
model learning module, a face key point regression calculation module, a working mode determination module and a face key point post-
processing module. The face key point regression calculation module includes a detection mode and a tracking mode; an initial face frame is used as an input to carry out regression calculation of a face key
point model in the detection mode; and regression calculation of a current frame key
point model is carried out by using a last-frame face key
point model in the tracking mode. According to the
system and method provided by the invention, on the basis of the face key point
positioning technology having the detection mode and the tracking mode, initial face frame detection is only carried out at a first frame, the tracking mode is employed during a follow-up positioning process, and the key point positioning of the last frame is used as the input of the current frame. Therefore, the
face detection module does not need to be invoked again during the tracking process, so that the calculation time is saved and the system efficiency is improved.