1. A system for effectively analyzing image data, comprising: a facial feature detector configured to generate facial feature information by analyzing said image data, said facial feature information including eye-area information and mouth-area information, said facial feature detector performing an eye-area vertical projection procedure for generating said eye-area information, said facial feature detector also performing a mouth-area vertical projection procedure for generating said mouth-area information; and a processor configured to control said facial feature detector to thereby effectively analyze said image data.