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. 2016 Jun 30;16(7):1010. doi: 10.3390/s16071010

Figure 15.

Figure 15

Examples of cases in which the GEI-based method produced an erroneous recognition result. Kicking images by (a) GEI; and (b) EGEI; running or walking image by (c) GEI; and (d) EGEI.