1. An awareness detection system comprising: an imaging device positioned to obtain a plurality of images of at least a portion of a subject's head; and an awareness processor in communication with said imaging device, wherein said awareness processor receives said plurality of images from said imaging device and performs the steps comprising: conducting a two-point head pose analysis of said subject and generating a head pose result when two eyes of said subject are located; conducting a one-point head pose analysis of said subject and generating a head pose result when only one eye of said subject is located; conducting a zero-point head pose analysis of said subject and generating a head pose result when zero said eyes of said subject are located; detecting at least one point of interest in said plurality of images; conducting a motion analysis of said plurality of images to estimate a head pose of said subject based upon said generated head pose result, wherein a motion vector for each said at least one point of interest is determined; and determining a state of awareness of said subject based upon said motion analysis.