Description and matching of density variation for personal identification through facial images
Kazushige Takahashi, Tsuyoshi Sakaguchi, Toshi Minami, Osamu Nakamura · Proceedings of SPIE, the International Society for Optical Engineering/Proceedings of SPIE · 1990
The feasibility of using isodensity lines for a human face identification system is demonstrated through experi-mental investigation. Instead of using feature points extracted from the faces, as is done in the conventional matchingsystem, the technique presented uses gray level isodensity lines of the faces By comparing the shape of isodensitylines, people can be identified. The identification technique proposed has the following advantages over conventional