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. 2014 Aug 14;9(8):e102829. doi: 10.1371/journal.pone.0102829

Figure 10. Some images of the Extended YALE database B in which the approach failed in the detection of the center of one or both eyes.

Figure 10

Reprinted from [29] under a CC BY license, with permission from Athinodoros S. Georghiades, original copyright 2001.