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comparison trajectorymanagement/src/ManhattanMetric.h @ 1159:e1e7acef8eab

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moved trajectory management library into Traffic Intelligence
author Nicolas Saunier <nicolas.saunier@polymtl.ca>
date Mon, 22 Feb 2021 22:09:35 -0500
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1158:7eb972942f22 1159:e1e7acef8eab
1 #ifndef MANHATTANMETRIC_H_
2 #define MANHATTANMETRIC_H_
3
4 #include "Metric.h"
5
6 #include "TrajectoryExceptions.h"
7
8 /**
9 * ManhattanMetric class.
10 *
11 * The Manhattan metric measures the similarity between two trajectories.
12 */
13 template<typename Tr, typename To>
14 class ManhattanMetric: public Metric<Tr, To>
15 {
16 public:
17 /**
18 * Compute similarity between two trajectories.
19 *
20 * @param[in] a input trajectory
21 * @param[in] b input trajectory
22 * @param[out] result distance between two trajectories
23 */
24 void distance(const Trajectory<Tr> *a, const Trajectory<Tr> *b, To &result, unsigned int nbOfPoints = std::numeric_limits<unsigned int>::max())
25 {
26 result = To(0);
27
28 if (nbOfPoints == std::numeric_limits<unsigned int>::max())
29 checkTrajectoryLength(a->size(), b->size());
30
31 To diff = To(0);
32 for (unsigned int i = 0; i < a->size() and i < nbOfPoints; ++i)
33 {
34 cv::Point3_<typeof(static_cast<Tr>(a->getPoint(i)).x)> p(a->getPoint(i) - b->getPoint(i));
35 diff += abs(p.x) + abs(p.y) + abs(p.z);
36 }
37
38 result = diff;
39 }
40
41 private:
42 /**
43 * Check the length of the trajectories.
44 *
45 * @param[in] a the size of the trajectory
46 * @param[in] b the size of the trajectory
47 */
48 void checkTrajectoryLength(size_t a, size_t b) const
49 {
50 if (a != b || a == 0)
51 {
52 throw TrajectoryLengthErrorException();
53 }
54 }
55 };
56
57 #endif /* MANHATTANMETRIC_H_ */