-scores of the nodes visited by the trajectories). If no trajectory of
-total positive detection score exists, this optimal set of
-trajectories will be empty.
-
-The MTPTracker is a wrapper around the MTPGraph class. From the
-defined spatial topology and number of time steps, it builds a graph
-with one source, one sink, and two nodes per location and time. The
-edges from the source or to the sink, or between these pairs of nodes,
-are of length zero, and the edges between the two nodes of such a pair
-have negative lengths, equal to the opposite of the corresponding
-detection scores. This structure also ensures that the trajectories
-computed by the MTPTracker will be node-disjoint, since the
-trajectories computed by the MTPGraph are edge-disjoint.
+scores of the nodes visited by the trajectories). In particular, if no
+trajectory of total positive detection score exists, this optimal set
+of trajectories is empty.
+
+An MTPTracker is a wrapper around an MTPGraph. From the defined
+spatial topology and number of time steps, it builds a graph with one
+source, one sink, and two nodes per location and time. The edges from
+the source or to the sink, or between these pairs of nodes, are of
+length zero, and the edges between the two nodes of such a pair have
+negative lengths, equal to the opposite of the corresponding detection
+scores. This structure ensures that the trajectories computed by the
+MTPTracker will be node-disjoint, since the trajectories computed by
+the MTPGraph are edge-disjoint.