Mercurial Hosting > traffic-intelligence
comparison c/Feature.cpp @ 129:4742b2b6d851
created basic feature saving code
author | Nicolas Saunier <nicolas.saunier@polymtl.ca> |
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date | Wed, 17 Aug 2011 17:14:00 -0400 |
parents | |
children | 45c64e68053c |
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128:536510f60854 | 129:4742b2b6d851 |
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1 #include "Feature.hpp" | |
2 | |
3 #include "opencv2/core/core.hpp" | |
4 | |
5 using namespace std; | |
6 using namespace cv; | |
7 | |
8 void FeatureTrajectory::addPoint(const int& frameNum, const Point2f& p) { | |
9 positions.add(frameNum, p); | |
10 computeMotionData(frameNum); | |
11 } | |
12 | |
13 // protected | |
14 | |
15 void FeatureTrajectory::computeMotionData(const int& frameNum) { | |
16 unsigned int nPositions = positions.size(); | |
17 if (nPositions >= 3) { | |
18 Point2f displacement = positions[nPositions-1] - positions[nPositions-2]; | |
19 velocities.add(frameNum, displacement); | |
20 float dist = norm(displacement); | |
21 displacementDistances.push_back(dist); | |
22 } else if (nPositions == 2) { | |
23 Point2f displacement = positions[1] - positions[0]; | |
24 velocities.add(frameNum-1, displacement); | |
25 velocities.add(frameNum, displacement); | |
26 float dist = norm(displacement); | |
27 displacementDistances.push_back(dist); | |
28 displacementDistances.push_back(dist); | |
29 } | |
30 } |