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. 2014 Mar 4;9(3):e87640. doi: 10.1371/journal.pone.0087640

Figure 2. Example of background subtraction procedure: on the left side one frame from one of the acquired video sequences is reported: above subject with markers and below results of background subtraction.

Figure 2

On the right side 4 views of the same grey-scale video sequence from 4 different cameras has been reported.