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. Author manuscript; available in PMC: 2010 Dec 22.
Published in final edited form as: IEEE Trans Pattern Anal Mach Intell. 1999 Oct;21(10):974. doi: 10.1109/34.799905

Fig. 6.

Fig. 6

PCA and FLD projections of three lower-face action classes onto two dimensions. FLD projections are slightly offset for visibility. FLD projected each class to a single point.