17. A method for tracking an individual within a monitored area comprising the following steps: a) forming a first reference facial image signature related to the individual according to a first methodology: b) forming a second reference facial image signature related to the individual according to a second methodology which is different from the first methodology; c) obtaining a current image and a set of subsequent images of the monitored area; d) locating a current facial image of the individual in the current image; e) extracting a first current facial image signature from the current facial image by use of the first methodology; f) comparing the first current facial image signature with the first reference facial image signature to generate a first score; g) extracting a second current facial image signature from the current facial image by use of the second methodology; h) comparing the second current facial image signature with the second reference facial image signature to generate a second score; i) identifying the individual from the first and second scores; and, j) tracking the identified individual from the current image through at least some of the subsequent images.
17. A method for tracking an individual within a monitored area comprising the following steps: a) forming a first reference facial image signature related to the individual according to a first methodology: b) forming a second reference facial image signature related to the individual according to a second methodology which is different from the first methodology; c) obtaining a current image and a set of subsequent images of the monitored area; d) locating a current facial image of the individual in the current image; e) extracting a first current facial image signature from the current facial image by use of the first methodology; f) comparing the first current facial image signature with the first reference facial image signature to generate a first score; g) extracting a second current facial image signature from the current facial image by use of the second methodology; h) comparing the second current facial image signature with the second reference facial image signature to generate a second score; i) identifying the individual from the first and second scores; and, j) tracking the identified individual from the current image through at least some of the subsequent images. 22. The method of claim 17 comprising the further following steps; detecting declining scores as current facial image signatures are compared with the first reference facial image signature; and, replacing the first reference facial image signature with a current facial image signature when the declining scores are below a predetermined value.